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[Linux-kselftest-mirror] [RFC PATCH for 4.16 14/21] selftests: lib.mk: Introduce OVERRIDE_TARGETS

by Mathieu Desnoyers

Introduce OVERRIDE_TARGETS to allow tests to express dependencies on header files and .so, which require to override the selftests lib.mk targets. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Acked-by: Shuah Khan <shuahkh(a)osg.samsung.com> CC: Russell King <linux(a)arm.linux.org.uk> CC: Catalin Marinas <catalin.marinas(a)arm.com> CC: Will Deacon <will.deacon(a)arm.com> CC: Thomas Gleixner <tglx(a)linutronix.de> CC: Paul Turner <pjt(a)google.com> CC: Andrew Hunter <ahh(a)google.com> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Andy Lutomirski <luto(a)amacapital.net> CC: Andi Kleen <andi(a)firstfloor.org> CC: Dave Watson <davejwatson(a)fb.com> CC: Chris Lameter <cl(a)linux.com> CC: Ingo Molnar <mingo(a)redhat.com> CC: "H. Peter Anvin" <hpa(a)zytor.com> CC: Ben Maurer <bmaurer(a)fb.com> CC: Steven Rostedt <rostedt(a)goodmis.org> CC: "Paul E. McKenney" <paulmck(a)linux.vnet.ibm.com> CC: Josh Triplett <josh(a)joshtriplett.org> CC: Linus Torvalds <torvalds(a)linux-foundation.org> CC: Andrew Morton <akpm(a)linux-foundation.org> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: linux-kselftest(a)vger.kernel.org CC: linux-api(a)vger.kernel.org --- tools/testing/selftests/lib.mk | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk index 5bef05d6ba39..441d7bc63bb7 100644 --- a/tools/testing/selftests/lib.mk +++ b/tools/testing/selftests/lib.mk @@ -105,6 +105,9 @@ COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) endif +# Selftest makefiles can override those targets by setting +# OVERRIDE_TARGETS = 1. +ifeq ($(OVERRIDE_TARGETS),) $(OUTPUT)/%:%.c $(LINK.c) $^ $(LDLIBS) -o $@ @@ -113,5 +116,6 @@ $(OUTPUT)/%.o:%.S $(OUTPUT)/%:%.S $(LINK.S) $^ $(LDLIBS) -o $@ +endif .PHONY: run_tests all clean install emit_tests -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 4 months

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[Linux-kselftest-mirror] [PATCH 4.9 067/148] x86/selftests: Add clobbers for int80 on x86_64

by Greg Kroah-Hartman

4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dmitry Safonov <dsafonov(a)virtuozzo.com> [ Upstream commit 2a4d0c627f5374f365a873dea4e10ae0bb437680 ] Kernel erases R8..R11 registers prior returning to userspace from int80: https://lkml.org/lkml/2009/10/1/164 GCC can reuse these registers and doesn't expect them to change during syscall invocation. I met this kind of bug in CRIU once GCC 6.1 and CLANG stored local variables in those registers and the kernel zerofied them during syscall: https://github.com/xemul/criu/commit/990d33f1a1cdd17bca6c2eb059ab3be2564f7f… By that reason I suggest to add those registers to clobbers in selftests. Also, as noted by Andy - removed unneeded clobber for flags in INT $0x80 inline asm. Signed-off-by: Dmitry Safonov <dsafonov(a)virtuozzo.com> Acked-by: Andy Lutomirski <luto(a)kernel.org> Cc: 0x7f454c46(a)gmail.com Cc: Borislav Petkov <bp(a)alien8.de> Cc: Borislav Petkov <bp(a)suse.de> Cc: Brian Gerst <brgerst(a)gmail.com> Cc: Denys Vlasenko <dvlasenk(a)redhat.com> Cc: H. Peter Anvin <hpa(a)zytor.com> Cc: Josh Poimboeuf <jpoimboe(a)redhat.com> Cc: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Shuah Khan <shuah(a)kernel.org> Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: linux-kselftest(a)vger.kernel.org Link: http://lkml.kernel.org/r/20170213101336.20486-1-dsafonov@virtuozzo.com Signed-off-by: Ingo Molnar <mingo(a)kernel.org> Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- tools/testing/selftests/x86/fsgsbase.c | 2 +- tools/testing/selftests/x86/ldt_gdt.c | 16 +++++++++++----- tools/testing/selftests/x86/ptrace_syscall.c | 3 ++- tools/testing/selftests/x86/single_step_syscall.c | 5 ++++- 4 files changed, 18 insertions(+), 8 deletions(-) --- a/tools/testing/selftests/x86/fsgsbase.c +++ b/tools/testing/selftests/x86/fsgsbase.c @@ -245,7 +245,7 @@ void do_unexpected_base(void) long ret; asm volatile ("int $0x80" : "=a" (ret) : "a" (243), "b" (low_desc) - : "flags"); + : "r8", "r9", "r10", "r11"); memcpy(&desc, low_desc, sizeof(desc)); munmap(low_desc, sizeof(desc)); --- a/tools/testing/selftests/x86/ldt_gdt.c +++ b/tools/testing/selftests/x86/ldt_gdt.c @@ -45,6 +45,12 @@ #define AR_DB (1 << 22) #define AR_G (1 << 23) +#ifdef __x86_64__ +# define INT80_CLOBBERS "r8", "r9", "r10", "r11" +#else +# define INT80_CLOBBERS +#endif + static int nerrs; /* Points to an array of 1024 ints, each holding its own index. */ @@ -649,7 +655,7 @@ static int invoke_set_thread_area(void) asm volatile ("int $0x80" : "=a" (ret), "+m" (low_user_desc) : "a" (243), "b" (low_user_desc) - : "flags"); + : INT80_CLOBBERS); return ret; } @@ -718,7 +724,7 @@ static void test_gdt_invalidation(void) "+a" (eax) : "m" (low_user_desc_clear), [arg1] "r" ((unsigned int)(unsigned long)low_user_desc_clear) - : "flags"); + : INT80_CLOBBERS); if (sel != 0) { result = "FAIL"; @@ -749,7 +755,7 @@ static void test_gdt_invalidation(void) "+a" (eax) : "m" (low_user_desc_clear), [arg1] "r" ((unsigned int)(unsigned long)low_user_desc_clear) - : "flags"); + : INT80_CLOBBERS); if (sel != 0) { result = "FAIL"; @@ -782,7 +788,7 @@ static void test_gdt_invalidation(void) "+a" (eax) : "m" (low_user_desc_clear), [arg1] "r" ((unsigned int)(unsigned long)low_user_desc_clear) - : "flags"); + : INT80_CLOBBERS); #ifdef __x86_64__ syscall(SYS_arch_prctl, ARCH_GET_FS, &new_base); @@ -835,7 +841,7 @@ static void test_gdt_invalidation(void) "+a" (eax) : "m" (low_user_desc_clear), [arg1] "r" ((unsigned int)(unsigned long)low_user_desc_clear) - : "flags"); + : INT80_CLOBBERS); #ifdef __x86_64__ syscall(SYS_arch_prctl, ARCH_GET_GS, &new_base); --- a/tools/testing/selftests/x86/ptrace_syscall.c +++ b/tools/testing/selftests/x86/ptrace_syscall.c @@ -58,7 +58,8 @@ static void do_full_int80(struct syscall asm volatile ("int $0x80" : "+a" (args->nr), "+b" (args->arg0), "+c" (args->arg1), "+d" (args->arg2), - "+S" (args->arg3), "+D" (args->arg4), "+r" (bp)); + "+S" (args->arg3), "+D" (args->arg4), "+r" (bp) + : : "r8", "r9", "r10", "r11"); args->arg5 = bp; #else sys32_helper(args, int80_and_ret); --- a/tools/testing/selftests/x86/single_step_syscall.c +++ b/tools/testing/selftests/x86/single_step_syscall.c @@ -56,9 +56,11 @@ static volatile sig_atomic_t sig_traps; #ifdef __x86_64__ # define REG_IP REG_RIP # define WIDTH "q" +# define INT80_CLOBBERS "r8", "r9", "r10", "r11" #else # define REG_IP REG_EIP # define WIDTH "l" +# define INT80_CLOBBERS #endif static unsigned long get_eflags(void) @@ -140,7 +142,8 @@ int main() printf("[RUN]\tSet TF and check int80\n"); set_eflags(get_eflags() | X86_EFLAGS_TF); - asm volatile ("int $0x80" : "=a" (tmp) : "a" (SYS_getpid)); + asm volatile ("int $0x80" : "=a" (tmp) : "a" (SYS_getpid) + : INT80_CLOBBERS); check_result(); /* -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 4 months

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[Linux-kselftest-mirror] [PATCH] selftests: bpf: Adding config fragment CONFIG_CGROUP_BPF=y

by Naresh Kamboju

CONFIG_CGROUP_BPF=y is required for test_dev_cgroup test case. Signed-off-by: Naresh Kamboju <naresh.kamboju(a)linaro.org> --- tools/testing/selftests/bpf/config | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/bpf/config b/tools/testing/selftests/bpf/config index 52d53ed..9d48973 100644 --- a/tools/testing/selftests/bpf/config +++ b/tools/testing/selftests/bpf/config @@ -3,3 +3,4 @@ CONFIG_BPF_SYSCALL=y CONFIG_NET_CLS_BPF=m CONFIG_BPF_EVENTS=y CONFIG_TEST_BPF=m +CONFIG_CGROUP_BPF=y -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 4 months

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[Linux-kselftest-mirror] [PATCH] selftests: net: Adding config fragment CONFIG_CGROUP_BPF=y

by Naresh Kamboju

CONFIG_CGROUP_BPF=y is required for test_dev_cgroup test case. Signed-off-by: Naresh Kamboju <naresh.kamboju(a)linaro.org> --- tools/testing/selftests/net/config | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/net/config b/tools/testing/selftests/net/config index e57b4ac..02301c6 100644 --- a/tools/testing/selftests/net/config +++ b/tools/testing/selftests/net/config @@ -1,3 +1,4 @@ CONFIG_USER_NS=y CONFIG_BPF_SYSCALL=y CONFIG_TEST_BPF=m +CONFIG_CGROUP_BPF=y -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 4 months

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[Linux-kselftest-mirror] [PATCH 32/45] tools/testing/selftests: remove duplicate includes

by Pravin Shedge

These duplicate includes have been found with scripts/checkincludes.pl but they have been removed manually to avoid removing false positives. Signed-off-by: Pravin Shedge <pravin.shedge4linux(a)gmail.com> --- tools/testing/selftests/gpio/gpio-mockup-chardev.c | 1 - tools/testing/selftests/powerpc/pmu/ebb/fork_cleanup_test.c | 1 - tools/testing/selftests/powerpc/tm/tm-vmx-unavail.c | 1 - tools/testing/selftests/timers/skew_consistency.c | 1 - tools/testing/selftests/x86/mpx-dig.c | 2 -- tools/testing/selftests/x86/mpx-mini-test.c | 4 ---- tools/testing/selftests/x86/unwind_vdso.c | 1 - 7 files changed, 11 deletions(-) diff --git a/tools/testing/selftests/gpio/gpio-mockup-chardev.c b/tools/testing/selftests/gpio/gpio-mockup-chardev.c index 667e916..0424aaa 100644 --- a/tools/testing/selftests/gpio/gpio-mockup-chardev.c +++ b/tools/testing/selftests/gpio/gpio-mockup-chardev.c @@ -12,7 +12,6 @@ #include <unistd.h> #include <stdio.h> #include <stdlib.h> -#include <stdio.h> #include <errno.h> #include <string.h> #include <fcntl.h> diff --git a/tools/testing/selftests/powerpc/pmu/ebb/fork_cleanup_test.c b/tools/testing/selftests/powerpc/pmu/ebb/fork_cleanup_test.c index 167135b..bf599d4 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/fork_cleanup_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/fork_cleanup_test.c @@ -3,7 +3,6 @@ * Licensed under GPLv2. */ -#include <signal.h> #include <stdio.h> #include <stdlib.h> #include <stdbool.h> diff --git a/tools/testing/selftests/powerpc/tm/tm-vmx-unavail.c b/tools/testing/selftests/powerpc/tm/tm-vmx-unavail.c index 137185b..be05b2c 100644 --- a/tools/testing/selftests/powerpc/tm/tm-vmx-unavail.c +++ b/tools/testing/selftests/powerpc/tm/tm-vmx-unavail.c @@ -14,7 +14,6 @@ #include <string.h> #include <stdlib.h> #include <stdio.h> -#include <pthread.h> #include <sys/mman.h> #include <unistd.h> #include <pthread.h> diff --git a/tools/testing/selftests/timers/skew_consistency.c b/tools/testing/selftests/timers/skew_consistency.c index 022b711..8066be9 100644 --- a/tools/testing/selftests/timers/skew_consistency.c +++ b/tools/testing/selftests/timers/skew_consistency.c @@ -32,7 +32,6 @@ #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> -#include <stdlib.h> #include <string.h> #include <sys/wait.h> #include "../kselftest.h" diff --git a/tools/testing/selftests/x86/mpx-dig.c b/tools/testing/selftests/x86/mpx-dig.c index c13607e..880fbf6 100644 --- a/tools/testing/selftests/x86/mpx-dig.c +++ b/tools/testing/selftests/x86/mpx-dig.c @@ -8,9 +8,7 @@ #include <unistd.h> #include <stdio.h> #include <errno.h> -#include <sys/types.h> #include <sys/stat.h> -#include <unistd.h> #include <sys/mman.h> #include <string.h> #include <fcntl.h> diff --git a/tools/testing/selftests/x86/mpx-mini-test.c b/tools/testing/selftests/x86/mpx-mini-test.c index ec0f6b4..f17e0a1 100644 --- a/tools/testing/selftests/x86/mpx-mini-test.c +++ b/tools/testing/selftests/x86/mpx-mini-test.c @@ -722,10 +722,6 @@ void mpx_cleanup(void) } /*-------------- the following is test case ---------------*/ -#include <stdint.h> -#include <stdbool.h> -#include <stdlib.h> -#include <stdio.h> #include <time.h> uint64_t num_lower_brs; diff --git a/tools/testing/selftests/x86/unwind_vdso.c b/tools/testing/selftests/x86/unwind_vdso.c index 00a26a8..9731133 100644 --- a/tools/testing/selftests/x86/unwind_vdso.c +++ b/tools/testing/selftests/x86/unwind_vdso.c @@ -44,7 +44,6 @@ int main() #include <stdbool.h> #include <sys/ptrace.h> #include <sys/user.h> -#include <sys/ucontext.h> #include <link.h> #include <sys/auxv.h> #include <dlfcn.h> -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 4 months

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[Linux-kselftest-mirror] [PATCH] treewide: remove duplicate includes

by Pravin Shedge

These duplicate includes have been found with scripts/checkincludes.pl but they have been removed manually to avoid removing false positives. Unit Testing: - build successful - LTP testsuite passes. - checkpatch.pl passes Signed-off-by: Pravin Shedge <pravin.shedge4linux(a)gmail.com> --- arch/arm/crypto/aes-ce-glue.c | 1 - arch/arm/mach-sa1100/hackkit.c | 1 - arch/arm/mm/mmu.c | 2 -- arch/arm/xen/mm.c | 1 - arch/arm64/kernel/armv8_deprecated.c | 1 - arch/arm64/kernel/fpsimd.c | 1 - arch/blackfin/kernel/irqchip.c | 1 - arch/blackfin/mach-common/ints-priority.c | 1 - arch/mips/mm/init.c | 2 -- arch/nios2/mm/fault.c | 1 - arch/parisc/kernel/unwind.c | 1 - arch/parisc/lib/delay.c | 2 -- arch/powerpc/kernel/time.c | 2 -- arch/powerpc/lib/code-patching.c | 1 - arch/powerpc/mm/numa.c | 1 - arch/powerpc/platforms/powernv/npu-dma.c | 1 - arch/powerpc/platforms/powernv/opal.c | 1 - arch/s390/kernel/kprobes.c | 1 - arch/sh/boards/mach-dreamcast/irq.c | 1 - arch/sparc/kernel/uprobes.c | 1 - arch/tile/kernel/single_step.c | 1 - arch/tile/kernel/unaligned.c | 1 - arch/x86/kernel/itmt.c | 1 - arch/x86/kernel/process.c | 1 - arch/x86/kernel/setup.c | 1 - arch/x86/kernel/smpboot.c | 1 - arch/x86/platform/efi/efi_64.c | 1 - arch/x86/xen/spinlock.c | 2 -- drivers/bus/qcom-ebi2.c | 1 - drivers/crypto/bcm/cipher.c | 1 - drivers/crypto/cavium/nitrox/nitrox_reqmgr.c | 1 - drivers/crypto/ccp/ccp-crypto-aes-galois.c | 1 - drivers/gpio/gpio-brcmstb.c | 1 - drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 1 - drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c | 1 - drivers/gpu/drm/amd/amdgpu/vce_v3_0.c | 1 - drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c | 1 - drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 --- drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c | 1 - drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 1 - drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c | 1 - drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c | 1 - drivers/gpu/drm/bridge/panel.c | 1 - drivers/gpu/drm/drm_drv.c | 1 - drivers/gpu/drm/i915/intel_dsi_vbt.c | 1 - drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c | 2 -- drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c | 1 - drivers/hwtracing/coresight/coresight-etb10.c | 1 - drivers/iio/gyro/bmg160_core.c | 1 - drivers/infiniband/core/mad.c | 1 - drivers/infiniband/core/netlink.c | 2 -- drivers/infiniband/hw/mlx5/main.c | 4 +--- drivers/infiniband/hw/usnic/usnic_ib_sysfs.c | 1 - drivers/infiniband/hw/usnic/usnic_ib_verbs.c | 1 - drivers/input/rmi4/rmi_f34.c | 1 - drivers/media/platform/pxa_camera.c | 1 - drivers/media/platform/ti-vpe/cal.c | 3 --- drivers/media/v4l2-core/v4l2-mc.c | 2 -- drivers/mfd/intel_soc_pmic_core.c | 1 - drivers/mfd/max77843.c | 1 - drivers/misc/genwqe/card_base.c | 1 - drivers/misc/genwqe/card_ddcb.c | 1 - drivers/misc/genwqe/card_utils.c | 2 -- drivers/mmc/host/android-goldfish.c | 2 -- drivers/net/dsa/bcm_sf2.c | 1 - drivers/net/ethernet/cavium/liquidio/lio_vf_rep.c | 3 +-- drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 1 - drivers/net/ethernet/freescale/gianfar.c | 2 -- drivers/net/ethernet/qlogic/qed/qed_cxt.c | 1 - drivers/net/usb/lan78xx.c | 1 - drivers/net/wireless/ath/ath10k/mac.c | 1 - drivers/net/wireless/ath/ath10k/wmi-tlv.c | 1 - drivers/net/wireless/intel/iwlwifi/mvm/ops.c | 1 - drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.c | 1 - drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.c | 1 - drivers/pnp/quirks.c | 2 -- drivers/rpmsg/qcom_glink_smem.c | 2 -- drivers/s390/block/dasd_diag.c | 1 - drivers/s390/net/qeth_l2_main.c | 1 - drivers/scsi/qla2xxx/qla_nx2.c | 2 -- drivers/staging/ccree/ssi_buffer_mgr.c | 1 - drivers/staging/ccree/ssi_driver.c | 1 - drivers/staging/irda/drivers/pxaficp_ir.c | 1 - drivers/thermal/of-thermal.c | 1 - drivers/usb/typec/fusb302/fusb302.c | 1 - fs/block_dev.c | 1 - fs/btrfs/super.c | 1 - fs/cachefiles/namei.c | 1 - fs/xfs/scrub/scrub.c | 1 - fs/xfs/scrub/trace.c | 1 - fs/xfs/xfs_reflink.c | 2 -- fs/xfs/xfs_trace.c | 1 - kernel/audit.c | 1 - kernel/locking/locktorture.c | 1 - kernel/sysctl.c | 1 - kernel/time/ntp.c | 1 - mm/userfaultfd.c | 1 - net/core/netprio_cgroup.c | 1 - net/dsa/slave.c | 1 - net/netfilter/nf_conntrack_netlink.c | 1 - net/sched/act_meta_mark.c | 1 - net/sched/act_meta_skbtcindex.c | 1 - net/sched/cls_api.c | 1 - net/sched/cls_u32.c | 1 - samples/bpf/bpf_load.c | 1 - samples/bpf/sampleip_user.c | 1 - samples/bpf/test_current_task_under_cgroup_user.c | 1 - samples/sockmap/sockmap_user.c | 1 - security/apparmor/apparmorfs.c | 1 - sound/soc/hisilicon/hi6210-i2s.c | 1 - sound/soc/zte/zx-i2s.c | 3 --- tools/perf/bench/futex-hash.c | 1 - tools/perf/builtin-c2c.c | 3 --- tools/perf/builtin-record.c | 1 - tools/perf/builtin-stat.c | 1 - tools/perf/tests/parse-events.c | 1 - tools/perf/util/auxtrace.c | 3 --- tools/perf/util/header.c | 2 -- tools/perf/util/metricgroup.c | 2 -- tools/perf/util/scripting-engines/trace-event-python.c | 1 - tools/testing/selftests/gpio/gpio-mockup-chardev.c | 1 - tools/testing/selftests/powerpc/pmu/ebb/fork_cleanup_test.c | 1 - tools/testing/selftests/powerpc/tm/tm-vmx-unavail.c | 1 - tools/testing/selftests/timers/skew_consistency.c | 1 - tools/testing/selftests/x86/mpx-dig.c | 2 -- tools/testing/selftests/x86/mpx-mini-test.c | 4 ---- tools/testing/selftests/x86/unwind_vdso.c | 1 - 127 files changed, 2 insertions(+), 161 deletions(-) diff --git a/arch/arm/crypto/aes-ce-glue.c b/arch/arm/crypto/aes-ce-glue.c index d0a9cec..5affb84 100644 --- a/arch/arm/crypto/aes-ce-glue.c +++ b/arch/arm/crypto/aes-ce-glue.c @@ -10,7 +10,6 @@ #include <asm/hwcap.h> #include <asm/neon.h> -#include <asm/hwcap.h> #include <crypto/aes.h> #include <crypto/internal/simd.h> #include <crypto/internal/skcipher.h> diff --git a/arch/arm/mach-sa1100/hackkit.c b/arch/arm/mach-sa1100/hackkit.c index 643d5f2..0016d25 100644 --- a/arch/arm/mach-sa1100/hackkit.c +++ b/arch/arm/mach-sa1100/hackkit.c @@ -22,7 +22,6 @@ #include <linux/serial_core.h> #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> -#include <linux/tty.h> #include <linux/gpio.h> #include <linux/leds.h> #include <linux/platform_device.h> diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index e46a6a4..56d265e 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -23,7 +23,6 @@ #include <asm/sections.h> #include <asm/cachetype.h> #include <asm/fixmap.h> -#include <asm/sections.h> #include <asm/setup.h> #include <asm/smp_plat.h> #include <asm/tlb.h> @@ -36,7 +35,6 @@ #include <asm/mach/arch.h> #include <asm/mach/map.h> #include <asm/mach/pci.h> -#include <asm/fixmap.h> #include "fault.h" #include "mm.h" diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c index 785d2a5..8ba803b 100644 --- a/arch/arm/xen/mm.c +++ b/arch/arm/xen/mm.c @@ -8,7 +8,6 @@ #include <linux/of_address.h> #include <linux/slab.h> #include <linux/types.h> -#include <linux/dma-mapping.h> #include <linux/vmalloc.h> #include <linux/swiotlb.h> diff --git a/arch/arm64/kernel/armv8_deprecated.c b/arch/arm64/kernel/armv8_deprecated.c index c33b5e4..6c25b8a 100644 --- a/arch/arm64/kernel/armv8_deprecated.c +++ b/arch/arm64/kernel/armv8_deprecated.c @@ -21,7 +21,6 @@ #include <asm/traps.h> #include <asm/kprobes.h> #include <linux/uaccess.h> -#include <asm/cpufeature.h> #define CREATE_TRACE_POINTS #include "trace-events-emulation.h" diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index 5084e69..2f822dc2 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -31,7 +31,6 @@ #include <linux/percpu.h> #include <linux/prctl.h> #include <linux/preempt.h> -#include <linux/prctl.h> #include <linux/ptrace.h> #include <linux/sched/signal.h> #include <linux/sched/task_stack.h> diff --git a/arch/blackfin/kernel/irqchip.c b/arch/blackfin/kernel/irqchip.c index 052cde5..39a5a7d 100644 --- a/arch/blackfin/kernel/irqchip.c +++ b/arch/blackfin/kernel/irqchip.c @@ -11,7 +11,6 @@ #include <linux/kallsyms.h> #include <linux/interrupt.h> #include <linux/irq.h> -#include <linux/seq_file.h> #include <asm/irq_handler.h> #include <asm/trace.h> #include <asm/pda.h> diff --git a/arch/blackfin/mach-common/ints-priority.c b/arch/blackfin/mach-common/ints-priority.c index e81a5b7..50cc3ef 100644 --- a/arch/blackfin/mach-common/ints-priority.c +++ b/arch/blackfin/mach-common/ints-priority.c @@ -26,7 +26,6 @@ #include <asm/blackfin.h> #include <asm/irq_handler.h> #include <asm/dpmc.h> -#include <asm/traps.h> #include <asm/gpio.h> /* diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c index 84b7b59..400676c 100644 --- a/arch/mips/mm/init.c +++ b/arch/mips/mm/init.c @@ -30,7 +30,6 @@ #include <linux/hardirq.h> #include <linux/gfp.h> #include <linux/kcore.h> -#include <linux/export.h> #include <linux/initrd.h> #include <asm/asm-offsets.h> @@ -46,7 +45,6 @@ #include <asm/pgalloc.h> #include <asm/tlb.h> #include <asm/fixmap.h> -#include <asm/maar.h> /* * We have up to 8 empty zeroed pages so we can map one of the right colour diff --git a/arch/nios2/mm/fault.c b/arch/nios2/mm/fault.c index b804dd0..e32e3e9 100644 --- a/arch/nios2/mm/fault.c +++ b/arch/nios2/mm/fault.c @@ -24,7 +24,6 @@ #include <linux/mm.h> #include <linux/extable.h> #include <linux/uaccess.h> -#include <linux/ptrace.h> #include <asm/mmu_context.h> #include <asm/traps.h> diff --git a/arch/parisc/kernel/unwind.c b/arch/parisc/kernel/unwind.c index 5a65798..143f90e 100644 --- a/arch/parisc/kernel/unwind.c +++ b/arch/parisc/kernel/unwind.c @@ -15,7 +15,6 @@ #include <linux/slab.h> #include <linux/kallsyms.h> #include <linux/sort.h> -#include <linux/sched.h> #include <linux/uaccess.h> #include <asm/assembly.h> diff --git a/arch/parisc/lib/delay.c b/arch/parisc/lib/delay.c index 7eab4bb..66e5065 100644 --- a/arch/parisc/lib/delay.c +++ b/arch/parisc/lib/delay.c @@ -16,9 +16,7 @@ #include <linux/preempt.h> #include <linux/init.h> -#include <asm/processor.h> #include <asm/delay.h> - #include <asm/special_insns.h> /* for mfctl() */ #include <asm/processor.h> /* for boot_cpu_data */ diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index fe6f3a2..64d0b80 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -57,7 +57,6 @@ #include <linux/irq_work.h> #include <linux/clk-provider.h> #include <linux/suspend.h> -#include <linux/rtc.h> #include <linux/sched/cputime.h> #include <linux/processor.h> #include <asm/trace.h> @@ -78,7 +77,6 @@ /* powerpc clocksource/clockevent code */ -#include <linux/clockchips.h> #include <linux/timekeeper_internal.h> static u64 rtc_read(struct clocksource *); diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c index d469224..5f7e5ed 100644 --- a/arch/powerpc/lib/code-patching.c +++ b/arch/powerpc/lib/code-patching.c @@ -15,7 +15,6 @@ #include <linux/cpuhotplug.h> #include <linux/slab.h> #include <linux/uaccess.h> -#include <linux/kprobes.h> #include <asm/pgtable.h> #include <asm/tlbflush.h> diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index adb6364f..fa4b3af 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -33,7 +33,6 @@ #include <asm/sparsemem.h> #include <asm/prom.h> #include <asm/smp.h> -#include <asm/cputhreads.h> #include <asm/topology.h> #include <asm/firmware.h> #include <asm/paca.h> diff --git a/arch/powerpc/platforms/powernv/npu-dma.c b/arch/powerpc/platforms/powernv/npu-dma.c index f6cbc1a..e35b4fc 100644 --- a/arch/powerpc/platforms/powernv/npu-dma.c +++ b/arch/powerpc/platforms/powernv/npu-dma.c @@ -26,7 +26,6 @@ #include <asm/iommu.h> #include <asm/pnv-pci.h> #include <asm/msi_bitmap.h> -#include <asm/opal.h> #include "powernv.h" #include "pci.h" diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index 041ddbd..e00c1c6 100644 --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -26,7 +26,6 @@ #include <linux/memblock.h> #include <linux/kthread.h> #include <linux/freezer.h> -#include <linux/printk.h> #include <linux/kmsg_dump.h> #include <linux/console.h> #include <linux/sched/debug.h> diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c index af3722c..943d13e 100644 --- a/arch/s390/kernel/kprobes.c +++ b/arch/s390/kernel/kprobes.c @@ -20,7 +20,6 @@ #include <linux/ftrace.h> #include <asm/set_memory.h> #include <asm/sections.h> -#include <linux/uaccess.h> #include <asm/dis.h> DEFINE_PER_CPU(struct kprobe *, current_kprobe); diff --git a/arch/sh/boards/mach-dreamcast/irq.c b/arch/sh/boards/mach-dreamcast/irq.c index 2789647..69fa91c 100644 --- a/arch/sh/boards/mach-dreamcast/irq.c +++ b/arch/sh/boards/mach-dreamcast/irq.c @@ -10,7 +10,6 @@ */ #include <linux/irq.h> #include <linux/io.h> -#include <linux/irq.h> #include <linux/export.h> #include <linux/err.h> #include <mach/sysasic.h> diff --git a/arch/sparc/kernel/uprobes.c b/arch/sparc/kernel/uprobes.c index d852ae5..c44bf5b 100644 --- a/arch/sparc/kernel/uprobes.c +++ b/arch/sparc/kernel/uprobes.c @@ -29,7 +29,6 @@ #include <linux/kdebug.h> #include <asm/cacheflush.h> -#include <linux/uaccess.h> /* Compute the address of the breakpoint instruction and return it. * diff --git a/arch/tile/kernel/single_step.c b/arch/tile/kernel/single_step.c index de3eae8..93579c5 100644 --- a/arch/tile/kernel/single_step.c +++ b/arch/tile/kernel/single_step.c @@ -25,7 +25,6 @@ #include <linux/prctl.h> #include <asm/cacheflush.h> #include <asm/traps.h> -#include <linux/uaccess.h> #include <asm/unaligned.h> #include <arch/abi.h> #include <arch/spr_def.h> diff --git a/arch/tile/kernel/unaligned.c b/arch/tile/kernel/unaligned.c index 8149c38..dc4b242 100644 --- a/arch/tile/kernel/unaligned.c +++ b/arch/tile/kernel/unaligned.c @@ -29,7 +29,6 @@ #include <linux/prctl.h> #include <asm/cacheflush.h> #include <asm/traps.h> -#include <linux/uaccess.h> #include <asm/unaligned.h> #include <arch/abi.h> #include <arch/spr_def.h> diff --git a/arch/x86/kernel/itmt.c b/arch/x86/kernel/itmt.c index f73f475..d177940 100644 --- a/arch/x86/kernel/itmt.c +++ b/arch/x86/kernel/itmt.c @@ -24,7 +24,6 @@ #include <linux/cpumask.h> #include <linux/cpuset.h> #include <linux/mutex.h> -#include <linux/sched.h> #include <linux/sysctl.h> #include <linux/nodemask.h> diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index 97fb3e5..9824553 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -21,7 +21,6 @@ #include <linux/dmi.h> #include <linux/utsname.h> #include <linux/stackprotector.h> -#include <linux/tick.h> #include <linux/cpuidle.h> #include <trace/events/power.h> #include <linux/hw_breakpoint.h> diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 8af2e8d..c8e0447 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -114,7 +114,6 @@ #include <asm/alternative.h> #include <asm/prom.h> #include <asm/microcode.h> -#include <asm/mmu_context.h> #include <asm/kaslr.h> #include <asm/unwind.h> diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 3d01df7..8dd0f51 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -75,7 +75,6 @@ #include <asm/uv/uv.h> #include <linux/mc146818rtc.h> #include <asm/i8259.h> -#include <asm/realmode.h> #include <asm/misc.h> #include <asm/qspinlock.h> diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c index 6a151ce..1e5184d 100644 --- a/arch/x86/platform/efi/efi_64.c +++ b/arch/x86/platform/efi/efi_64.c @@ -25,7 +25,6 @@ #include <linux/spinlock.h> #include <linux/bootmem.h> #include <linux/ioport.h> -#include <linux/init.h> #include <linux/mc146818rtc.h> #include <linux/efi.h> #include <linux/uaccess.h> diff --git a/arch/x86/xen/spinlock.c b/arch/x86/xen/spinlock.c index 02f3445..cd97a62 100644 --- a/arch/x86/xen/spinlock.c +++ b/arch/x86/xen/spinlock.c @@ -23,8 +23,6 @@ static DEFINE_PER_CPU(int, lock_kicker_irq) = -1; static DEFINE_PER_CPU(char *, irq_name); static bool xen_pvspin = true; -#include <asm/qspinlock.h> - static void xen_qlock_kick(int cpu) { int irq = per_cpu(lock_kicker_irq, cpu); diff --git a/drivers/bus/qcom-ebi2.c b/drivers/bus/qcom-ebi2.c index a644424..56b01e4 100644 --- a/drivers/bus/qcom-ebi2.c +++ b/drivers/bus/qcom-ebi2.c @@ -21,7 +21,6 @@ #include <linux/of.h> #include <linux/of_platform.h> #include <linux/init.h> -#include <linux/io.h> #include <linux/slab.h> #include <linux/platform_device.h> #include <linux/bitops.h> diff --git a/drivers/crypto/bcm/cipher.c b/drivers/crypto/bcm/cipher.c index ce70b44..2b75f95 100644 --- a/drivers/crypto/bcm/cipher.c +++ b/drivers/crypto/bcm/cipher.c @@ -42,7 +42,6 @@ #include <crypto/authenc.h> #include <crypto/skcipher.h> #include <crypto/hash.h> -#include <crypto/aes.h> #include <crypto/sha3.h> #include "util.h" diff --git a/drivers/crypto/cavium/nitrox/nitrox_reqmgr.c b/drivers/crypto/cavium/nitrox/nitrox_reqmgr.c index 4addc23..deaefd5 100644 --- a/drivers/crypto/cavium/nitrox/nitrox_reqmgr.c +++ b/drivers/crypto/cavium/nitrox/nitrox_reqmgr.c @@ -6,7 +6,6 @@ #include "nitrox_dev.h" #include "nitrox_req.h" #include "nitrox_csr.h" -#include "nitrox_req.h" /* SLC_STORE_INFO */ #define MIN_UDD_LEN 16 diff --git a/drivers/crypto/ccp/ccp-crypto-aes-galois.c b/drivers/crypto/ccp/ccp-crypto-aes-galois.c index ff02b71..ca1f0d7 100644 --- a/drivers/crypto/ccp/ccp-crypto-aes-galois.c +++ b/drivers/crypto/ccp/ccp-crypto-aes-galois.c @@ -21,7 +21,6 @@ #include <crypto/ctr.h> #include <crypto/gcm.h> #include <crypto/scatterwalk.h> -#include <linux/delay.h> #include "ccp-crypto.h" diff --git a/drivers/gpio/gpio-brcmstb.c b/drivers/gpio/gpio-brcmstb.c index 545d43a..f40ec39 100644 --- a/drivers/gpio/gpio-brcmstb.c +++ b/drivers/gpio/gpio-brcmstb.c @@ -11,7 +11,6 @@ * GNU General Public License for more details. */ -#include <linux/bitops.h> #include <linux/gpio/driver.h> #include <linux/of_device.h> #include <linux/of_irq.h> diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c index 9ecdf62..7fd0599 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c @@ -44,7 +44,6 @@ #include "gca/gfx_8_0_d.h" #include "gca/gfx_8_0_enum.h" #include "gca/gfx_8_0_sh_mask.h" -#include "gca/gfx_8_0_enum.h" #include "dce/dce_10_0_d.h" #include "dce/dce_10_0_sh_mask.h" diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c index c25a831..aad4134 100644 --- a/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c @@ -37,7 +37,6 @@ #include "gmc/gmc_8_2_sh_mask.h" #include "oss/oss_3_0_d.h" #include "oss/oss_3_0_sh_mask.h" -#include "gca/gfx_8_0_sh_mask.h" #include "dce/dce_10_0_d.h" #include "dce/dce_10_0_sh_mask.h" #include "smu/smu_7_1_3_d.h" diff --git a/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c b/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c index cf81065..b526623 100644 --- a/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c +++ b/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c @@ -34,7 +34,6 @@ #include "vce/vce_3_0_sh_mask.h" #include "oss/oss_3_0_d.h" #include "oss/oss_3_0_sh_mask.h" -#include "gca/gfx_8_0_d.h" #include "smu/smu_7_1_2_d.h" #include "smu/smu_7_1_2_sh_mask.h" #include "gca/gfx_8_0_d.h" diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c index 2fbce57..8266a3f 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c @@ -24,7 +24,6 @@ #include "kfd_device_queue_manager.h" #include "gca/gfx_8_0_enum.h" #include "gca/gfx_8_0_sh_mask.h" -#include "gca/gfx_8_0_enum.h" #include "oss/oss_3_0_sh_mask.h" static bool set_cache_memory_policy_vi(struct device_queue_manager *dqm, diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index f71fe6d..b825dcb 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -23,7 +23,6 @@ * */ -#include "dm_services_types.h" #include "dc.h" #include "dc/inc/core_types.h" @@ -66,8 +65,6 @@ #include "soc15_common.h" #endif -#include "modules/inc/mod_freesync.h" - #include "i2caux_interface.h" /* basic init/fini API */ diff --git a/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c b/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c index 9c18efd..3f55dbc 100644 --- a/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c @@ -40,7 +40,6 @@ #include "dce/dce_mem_input.h" #include "dce/dce_link_encoder.h" #include "dce/dce_stream_encoder.h" -#include "dce/dce_mem_input.h" #include "dce/dce_ipp.h" #include "dce/dce_transform.h" #include "dce/dce_opp.h" diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c index 961ad5c..8d5d4c2 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c @@ -39,7 +39,6 @@ #include "ipp.h" #include "mpc.h" #include "reg_helper.h" -#include "custom_float.h" #include "dcn10_hubp.h" #define CTX \ diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c index bd6be77..ebbe8a1 100644 --- a/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c +++ b/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c @@ -44,7 +44,6 @@ #include "smu7_hwmgr.h" #include "hardwaremanager.h" -#include "ppatomctrl.h" #include "atombios.h" #include "pppcielanes.h" diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c index b98ade6..cd9c9b9 100644 --- a/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c +++ b/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c @@ -29,7 +29,6 @@ #include "rv_ppsmc.h" #include "smu10_driver_if.h" #include "smu10.h" -#include "ppatomctrl.h" #include "pp_debug.h" #include "smu_ucode_xfer_vi.h" #include "smu7_smumgr.h" diff --git a/drivers/gpu/drm/bridge/panel.c b/drivers/gpu/drm/bridge/panel.c index 6d99d4a..89e8d68 100644 --- a/drivers/gpu/drm/bridge/panel.c +++ b/drivers/gpu/drm/bridge/panel.c @@ -15,7 +15,6 @@ #include <drm/drm_crtc_helper.h> #include <drm/drm_encoder.h> #include <drm/drm_modeset_helper_vtables.h> -#include <drm/drm_panel.h> struct panel_bridge { struct drm_bridge bridge; diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index a934fd5..11f2461 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -39,7 +39,6 @@ #include "drm_crtc_internal.h" #include "drm_legacy.h" #include "drm_internal.h" -#include "drm_crtc_internal.h" /* * drm_debug: Enable debug output. diff --git a/drivers/gpu/drm/i915/intel_dsi_vbt.c b/drivers/gpu/drm/i915/intel_dsi_vbt.c index 91c07b0..0d6e999 100644 --- a/drivers/gpu/drm/i915/intel_dsi_vbt.c +++ b/drivers/gpu/drm/i915/intel_dsi_vbt.c @@ -32,7 +32,6 @@ #include <linux/slab.h> #include <video/mipi_display.h> #include <asm/intel-mid.h> -#include <video/mipi_display.h> #include "i915_drv.h" #include "intel_drv.h" #include "intel_dsi.h" diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c index c80b967..2b44ba5 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c @@ -26,8 +26,6 @@ #include <subdev/gpio.h> -#include <subdev/gpio.h> - static void nv04_bus_intr(struct nvkm_bus *bus) { diff --git a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c index 890fd6f..b9afb13 100644 --- a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c +++ b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c @@ -57,7 +57,6 @@ #include <drm/drmP.h> #include <drm/drm_crtc.h> #include <drm/drm_mipi_dsi.h> -#include <drm/drm_panel.h> #define RPI_DSI_DRIVER_NAME "rpi-ts-dsi" diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c index e03e589..580cd38 100644 --- a/drivers/hwtracing/coresight/coresight-etb10.c +++ b/drivers/hwtracing/coresight/coresight-etb10.c @@ -33,7 +33,6 @@ #include <linux/mm.h> #include <linux/perf_event.h> -#include <asm/local.h> #include "coresight-priv.h" diff --git a/drivers/iio/gyro/bmg160_core.c b/drivers/iio/gyro/bmg160_core.c index 1504617..63ca316 100644 --- a/drivers/iio/gyro/bmg160_core.c +++ b/drivers/iio/gyro/bmg160_core.c @@ -27,7 +27,6 @@ #include <linux/iio/trigger_consumer.h> #include <linux/iio/triggered_buffer.h> #include <linux/regmap.h> -#include <linux/delay.h> #include "bmg160.h" #define BMG160_IRQ_NAME "bmg160_event" diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c index cb91245..c50596f 100644 --- a/drivers/infiniband/core/mad.c +++ b/drivers/infiniband/core/mad.c @@ -49,7 +49,6 @@ #include "smi.h" #include "opa_smi.h" #include "agent.h" -#include "core_priv.h" static int mad_sendq_size = IB_MAD_QP_SEND_SIZE; static int mad_recvq_size = IB_MAD_QP_RECV_SIZE; diff --git a/drivers/infiniband/core/netlink.c b/drivers/infiniband/core/netlink.c index 1fb72c3..0c7db94 100644 --- a/drivers/infiniband/core/netlink.c +++ b/drivers/infiniband/core/netlink.c @@ -41,8 +41,6 @@ #include <linux/module.h> #include "core_priv.h" -#include "core_priv.h" - static DEFINE_MUTEX(rdma_nl_mutex); static struct sock *nls; static struct { diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 543d0a4..fe435ed 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -50,16 +50,14 @@ #include <rdma/ib_cache.h> #include <linux/mlx5/port.h> #include <linux/mlx5/vport.h> +#include <linux/mlx5/fs.h> #include <linux/list.h> #include <rdma/ib_smi.h> #include <rdma/ib_umem.h> #include <linux/in.h> #include <linux/etherdevice.h> -#include <linux/mlx5/fs.h> -#include <linux/mlx5/vport.h> #include "mlx5_ib.h" #include "cmd.h" -#include <linux/mlx5/vport.h> #define DRIVER_NAME "mlx5_ib" #define DRIVER_VERSION "5.0-0" diff --git a/drivers/infiniband/hw/usnic/usnic_ib_sysfs.c b/drivers/infiniband/hw/usnic/usnic_ib_sysfs.c index 685ef22..4210ca1 100644 --- a/drivers/infiniband/hw/usnic/usnic_ib_sysfs.c +++ b/drivers/infiniband/hw/usnic/usnic_ib_sysfs.c @@ -45,7 +45,6 @@ #include "usnic_ib_verbs.h" #include "usnic_ib_sysfs.h" #include "usnic_log.h" -#include "usnic_ib_sysfs.h" static ssize_t usnic_ib_show_board(struct device *device, struct device_attribute *attr, diff --git a/drivers/infiniband/hw/usnic/usnic_ib_verbs.c b/drivers/infiniband/hw/usnic/usnic_ib_verbs.c index aa2456a..a688a56 100644 --- a/drivers/infiniband/hw/usnic/usnic_ib_verbs.c +++ b/drivers/infiniband/hw/usnic/usnic_ib_verbs.c @@ -47,7 +47,6 @@ #include "usnic_log.h" #include "usnic_uiom.h" #include "usnic_transport.h" -#include "usnic_ib_verbs.h" #define USNIC_DEFAULT_TRANSPORT USNIC_TRANSPORT_ROCE_CUSTOM diff --git a/drivers/input/rmi4/rmi_f34.c b/drivers/input/rmi4/rmi_f34.c index 4cfe970..f1f5ac5 100644 --- a/drivers/input/rmi4/rmi_f34.c +++ b/drivers/input/rmi4/rmi_f34.c @@ -11,7 +11,6 @@ #include <linux/rmi.h> #include <linux/firmware.h> #include <asm/unaligned.h> -#include <asm/unaligned.h> #include <linux/bitops.h> #include "rmi_driver.h" diff --git a/drivers/media/platform/pxa_camera.c b/drivers/media/platform/pxa_camera.c index 9d3f0cb..2a9f02e 100644 --- a/drivers/media/platform/pxa_camera.c +++ b/drivers/media/platform/pxa_camera.c @@ -32,7 +32,6 @@ #include <linux/sched.h> #include <linux/slab.h> #include <linux/dmaengine.h> -#include <linux/dma-mapping.h> #include <linux/dma/pxa-dma.h> #include <media/v4l2-async.h> diff --git a/drivers/media/platform/ti-vpe/cal.c b/drivers/media/platform/ti-vpe/cal.c index 8b586c8..719ed1d 100644 --- a/drivers/media/platform/ti-vpe/cal.c +++ b/drivers/media/platform/ti-vpe/cal.c @@ -28,10 +28,7 @@ #include <media/v4l2-device.h> #include <media/v4l2-event.h> #include <media/v4l2-ioctl.h> -#include <media/v4l2-ctrls.h> #include <media/v4l2-fh.h> -#include <media/v4l2-event.h> -#include <media/v4l2-common.h> #include <media/videobuf2-core.h> #include <media/videobuf2-dma-contig.h> #include "cal_regs.h" diff --git a/drivers/media/v4l2-core/v4l2-mc.c b/drivers/media/v4l2-core/v4l2-mc.c index 303980b..1d550af 100644 --- a/drivers/media/v4l2-core/v4l2-mc.c +++ b/drivers/media/v4l2-core/v4l2-mc.c @@ -25,8 +25,6 @@ #include <media/v4l2-fh.h> #include <media/v4l2-mc.h> #include <media/v4l2-subdev.h> -#include <media/media-device.h> -#include <media/v4l2-mc.h> #include <media/videobuf2-core.h> int v4l2_mc_create_media_graph(struct media_device *mdev) diff --git a/drivers/mfd/intel_soc_pmic_core.c b/drivers/mfd/intel_soc_pmic_core.c index 36adf9e..274306d 100644 --- a/drivers/mfd/intel_soc_pmic_core.c +++ b/drivers/mfd/intel_soc_pmic_core.c @@ -16,7 +16,6 @@ * Author: Zhu, Lejun <lejun.zhu(a)linux.intel.com> */ -#include <linux/acpi.h> #include <linux/module.h> #include <linux/mfd/core.h> #include <linux/i2c.h> diff --git a/drivers/mfd/max77843.c b/drivers/mfd/max77843.c index dc5caea..da9612d 100644 --- a/drivers/mfd/max77843.c +++ b/drivers/mfd/max77843.c @@ -15,7 +15,6 @@ #include <linux/i2c.h> #include <linux/init.h> #include <linux/interrupt.h> -#include <linux/init.h> #include <linux/mfd/core.h> #include <linux/mfd/max77693-common.h> #include <linux/mfd/max77843-private.h> diff --git a/drivers/misc/genwqe/card_base.c b/drivers/misc/genwqe/card_base.c index 4fd21e8..42bad26 100644 --- a/drivers/misc/genwqe/card_base.c +++ b/drivers/misc/genwqe/card_base.c @@ -34,7 +34,6 @@ #include <linux/wait.h> #include <linux/delay.h> #include <linux/dma-mapping.h> -#include <linux/module.h> #include <linux/notifier.h> #include <linux/device.h> #include <linux/log2.h> diff --git a/drivers/misc/genwqe/card_ddcb.c b/drivers/misc/genwqe/card_ddcb.c index ddfeefe..332a0d1 100644 --- a/drivers/misc/genwqe/card_ddcb.c +++ b/drivers/misc/genwqe/card_ddcb.c @@ -34,7 +34,6 @@ #include <linux/string.h> #include <linux/dma-mapping.h> #include <linux/delay.h> -#include <linux/module.h> #include <linux/interrupt.h> #include <linux/crc-itu-t.h> diff --git a/drivers/misc/genwqe/card_utils.c b/drivers/misc/genwqe/card_utils.c index 5c0d917..8fec04d 100644 --- a/drivers/misc/genwqe/card_utils.c +++ b/drivers/misc/genwqe/card_utils.c @@ -32,11 +32,9 @@ #include <linux/iommu.h> #include <linux/delay.h> #include <linux/pci.h> -#include <linux/dma-mapping.h> #include <linux/ctype.h> #include <linux/module.h> #include <linux/platform_device.h> -#include <linux/delay.h> #include <asm/pgtable.h> #include "genwqe_driver.h" diff --git a/drivers/mmc/host/android-goldfish.c b/drivers/mmc/host/android-goldfish.c index 63fe509..63d2758 100644 --- a/drivers/mmc/host/android-goldfish.c +++ b/drivers/mmc/host/android-goldfish.c @@ -42,13 +42,11 @@ #include <linux/spinlock.h> #include <linux/timer.h> #include <linux/clk.h> -#include <linux/scatterlist.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/types.h> -#include <asm/io.h> #include <linux/uaccess.h> #define DRIVER_NAME "goldfish_mmc" diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c index ea01f24..b62d472 100644 --- a/drivers/net/dsa/bcm_sf2.c +++ b/drivers/net/dsa/bcm_sf2.c @@ -14,7 +14,6 @@ #include <linux/netdevice.h> #include <linux/interrupt.h> #include <linux/platform_device.h> -#include <linux/of.h> #include <linux/phy.h> #include <linux/phy_fixed.h> #include <linux/mii.h> diff --git a/drivers/net/ethernet/cavium/liquidio/lio_vf_rep.c b/drivers/net/ethernet/cavium/liquidio/lio_vf_rep.c index 2adafa3..fde2415 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_vf_rep.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_vf_rep.c @@ -17,6 +17,7 @@ ***********************************************************************/ #include <linux/pci.h> #include <linux/if_vlan.h> +#include <net/switchdev.h> #include "liquidio_common.h" #include "octeon_droq.h" #include "octeon_iq.h" @@ -25,9 +26,7 @@ #include "octeon_nic.h" #include "octeon_main.h" #include "octeon_network.h" -#include <net/switchdev.h> #include "lio_vf_rep.h" -#include "octeon_network.h" static int lio_vf_rep_open(struct net_device *ndev); static int lio_vf_rep_stop(struct net_device *ndev); diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c index 6f900ff..e90ab67 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c @@ -62,7 +62,6 @@ #include <net/netevent.h> #include <net/addrconf.h> #include <net/bonding.h> -#include <net/addrconf.h> #include <linux/uaccess.h> #include <linux/crash_dump.h> diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c index 5be52d8..c3e687c 100644 --- a/drivers/net/ethernet/freescale/gianfar.c +++ b/drivers/net/ethernet/freescale/gianfar.c @@ -102,8 +102,6 @@ #include <linux/phy_fixed.h> #include <linux/of.h> #include <linux/of_net.h> -#include <linux/of_address.h> -#include <linux/of_irq.h> #include "gianfar.h" diff --git a/drivers/net/ethernet/qlogic/qed/qed_cxt.c b/drivers/net/ethernet/qlogic/qed/qed_cxt.c index afd07ad..62e42ae 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_cxt.c +++ b/drivers/net/ethernet/qlogic/qed/qed_cxt.c @@ -31,7 +31,6 @@ */ #include <linux/types.h> -#include <linux/bitops.h> #include <linux/dma-mapping.h> #include <linux/errno.h> #include <linux/kernel.h> diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 94c7804..609cc3a 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -36,7 +36,6 @@ #include <linux/irq.h> #include <linux/irqchip/chained_irq.h> #include <linux/microchipphy.h> -#include <linux/phy.h> #include "lan78xx.h" #define DRIVER_AUTHOR "WOOJUNG HUH <woojung.huh(a)microchip.com>" diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 0a947ee..351de70 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -24,7 +24,6 @@ #include "hif.h" #include "core.h" #include "debug.h" -#include "wmi.h" #include "htt.h" #include "txrx.h" #include "testmode.h" diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.c b/drivers/net/wireless/ath/ath10k/wmi-tlv.c index 7616c1c..71314b97ab 100644 --- a/drivers/net/wireless/ath/ath10k/wmi-tlv.c +++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.c @@ -18,7 +18,6 @@ #include "debug.h" #include "mac.h" #include "hw.h" -#include "mac.h" #include "wmi.h" #include "wmi-ops.h" #include "wmi-tlv.h" diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c index 7078b7e..4cd1bed 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c @@ -85,7 +85,6 @@ #include "fw/api/scan.h" #include "time-event.h" #include "fw-api.h" -#include "fw/api/scan.h" #include "fw/acpi.h" #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux" diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.c b/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.c index 9670732..2b4e1cb 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.c +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.c @@ -33,7 +33,6 @@ #include "trx.h" #include "led.h" #include "dm.h" -#include "phy.h" static u8 _rtl88ee_map_hwqueue_to_fwqueue(struct sk_buff *skb, u8 hw_queue) { diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.c b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.c index 1e1bacf..f1540e1 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.c +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.c @@ -33,7 +33,6 @@ #include "trx.h" #include "led.h" #include "dm.h" -#include "phy.h" #include "fw.h" static u8 _rtl8821ae_map_hwqueue_to_fwqueue(struct sk_buff *skb, u8 hw_queue) diff --git a/drivers/pnp/quirks.c b/drivers/pnp/quirks.c index f054cdd..a0f9a91 100644 --- a/drivers/pnp/quirks.c +++ b/drivers/pnp/quirks.c @@ -227,8 +227,6 @@ static void quirk_ad1815_mpu_resources(struct pnp_dev *dev) dev_info(&dev->dev, "made independent IRQ optional\n"); } -#include <linux/pci.h> - static void quirk_system_pci_resources(struct pnp_dev *dev) { struct pci_dev *pdev = NULL; diff --git a/drivers/rpmsg/qcom_glink_smem.c b/drivers/rpmsg/qcom_glink_smem.c index 5cdaa5f..057528e 100644 --- a/drivers/rpmsg/qcom_glink_smem.c +++ b/drivers/rpmsg/qcom_glink_smem.c @@ -29,8 +29,6 @@ #include <linux/workqueue.h> #include <linux/list.h> -#include <linux/delay.h> -#include <linux/rpmsg.h> #include <linux/rpmsg/qcom_glink.h> #include "qcom_glink_native.h" diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c index f035c2f..131f198 100644 --- a/drivers/s390/block/dasd_diag.c +++ b/drivers/s390/block/dasd_diag.c @@ -27,7 +27,6 @@ #include <asm/io.h> #include <asm/irq.h> #include <asm/vtoc.h> -#include <asm/diag.h> #include "dasd_int.h" #include "dasd_diag.h" diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index 93d7e34..1467858 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -21,7 +21,6 @@ #include <linux/list.h> #include <linux/hash.h> #include <linux/hashtable.h> -#include <linux/string.h> #include <asm/setup.h> #include "qeth_core.h" #include "qeth_l2.h" diff --git a/drivers/scsi/qla2xxx/qla_nx2.c b/drivers/scsi/qla2xxx/qla_nx2.c index 0aa9c38..525ac35 100644 --- a/drivers/scsi/qla2xxx/qla_nx2.c +++ b/drivers/scsi/qla2xxx/qla_nx2.c @@ -11,8 +11,6 @@ #include "qla_def.h" #include "qla_gbl.h" -#include <linux/delay.h> - #define TIMEOUT_100_MS 100 static const uint32_t qla8044_reg_tbl[] = { diff --git a/drivers/staging/ccree/ssi_buffer_mgr.c b/drivers/staging/ccree/ssi_buffer_mgr.c index 1f8a225..834bddd 100644 --- a/drivers/staging/ccree/ssi_buffer_mgr.c +++ b/drivers/staging/ccree/ssi_buffer_mgr.c @@ -23,7 +23,6 @@ #include <crypto/scatterwalk.h> #include <linux/dmapool.h> #include <linux/dma-mapping.h> -#include <linux/crypto.h> #include <linux/module.h> #include <linux/platform_device.h> diff --git a/drivers/staging/ccree/ssi_driver.c b/drivers/staging/ccree/ssi_driver.c index 1a3c481..2cec0e1 100644 --- a/drivers/staging/ccree/ssi_driver.c +++ b/drivers/staging/ccree/ssi_driver.c @@ -55,7 +55,6 @@ #include <linux/uaccess.h> #include <linux/pagemap.h> #include <linux/sched.h> -#include <linux/random.h> #include <linux/of.h> #include <linux/clk.h> #include <linux/of_address.h> diff --git a/drivers/staging/irda/drivers/pxaficp_ir.c b/drivers/staging/irda/drivers/pxaficp_ir.c index 1dba16b..2ea00a6 100644 --- a/drivers/staging/irda/drivers/pxaficp_ir.c +++ b/drivers/staging/irda/drivers/pxaficp_ir.c @@ -12,7 +12,6 @@ * Infra-red driver (SIR/FIR) for the PXA2xx embedded microprocessor * */ -#include <linux/dma-mapping.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/netdevice.h> diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c index d04ec3b..e09f035 100644 --- a/drivers/thermal/of-thermal.c +++ b/drivers/thermal/of-thermal.c @@ -30,7 +30,6 @@ #include <linux/err.h> #include <linux/export.h> #include <linux/string.h> -#include <linux/thermal.h> #include "thermal_core.h" diff --git a/drivers/usb/typec/fusb302/fusb302.c b/drivers/usb/typec/fusb302/fusb302.c index 72cb060..a3e4cc9 100644 --- a/drivers/usb/typec/fusb302/fusb302.c +++ b/drivers/usb/typec/fusb302/fusb302.c @@ -16,7 +16,6 @@ #include <linux/module.h> #include <linux/mutex.h> #include <linux/of_device.h> -#include <linux/of_device.h> #include <linux/of_gpio.h> #include <linux/pinctrl/consumer.h> #include <linux/power_supply.h> diff --git a/fs/block_dev.c b/fs/block_dev.c index 4a181fc..f70073f 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -29,7 +29,6 @@ #include <linux/namei.h> #include <linux/log2.h> #include <linux/cleancache.h> -#include <linux/dax.h> #include <linux/badblocks.h> #include <linux/task_io_accounting_ops.h> #include <linux/falloc.h> diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 3a4dce1..b34fe15 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -61,7 +61,6 @@ #include "tests/btrfs-tests.h" #include "qgroup.h" -#include "backref.h" #define CREATE_TRACE_POINTS #include <trace/events/btrfs.h> diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index 3978b32..6eca9d3 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -20,7 +20,6 @@ #include <linux/namei.h> #include <linux/security.h> #include <linux/slab.h> -#include <linux/xattr.h> #include "internal.h" #define CACHEFILES_KEYBUF_SIZE 512 diff --git a/fs/xfs/scrub/scrub.c b/fs/xfs/scrub/scrub.c index 9c42c4e..ab3aef2 100644 --- a/fs/xfs/scrub/scrub.c +++ b/fs/xfs/scrub/scrub.c @@ -46,7 +46,6 @@ #include "scrub/scrub.h" #include "scrub/common.h" #include "scrub/trace.h" -#include "scrub/scrub.h" #include "scrub/btree.h" /* diff --git a/fs/xfs/scrub/trace.c b/fs/xfs/scrub/trace.c index 472080e..86daed0 100644 --- a/fs/xfs/scrub/trace.c +++ b/fs/xfs/scrub/trace.c @@ -26,7 +26,6 @@ #include "xfs_mount.h" #include "xfs_defer.h" #include "xfs_da_format.h" -#include "xfs_defer.h" #include "xfs_inode.h" #include "xfs_btree.h" #include "xfs_trans.h" diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c index cc041a2..cf7c8f8 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -49,8 +49,6 @@ #include "xfs_alloc.h" #include "xfs_quota_defs.h" #include "xfs_quota.h" -#include "xfs_btree.h" -#include "xfs_bmap_btree.h" #include "xfs_reflink.h" #include "xfs_iomap.h" #include "xfs_rmap_btree.h" diff --git a/fs/xfs/xfs_trace.c b/fs/xfs/xfs_trace.c index 5d95fe3..35f3546 100644 --- a/fs/xfs/xfs_trace.c +++ b/fs/xfs/xfs_trace.c @@ -24,7 +24,6 @@ #include "xfs_mount.h" #include "xfs_defer.h" #include "xfs_da_format.h" -#include "xfs_defer.h" #include "xfs_inode.h" #include "xfs_btree.h" #include "xfs_da_btree.h" diff --git a/kernel/audit.c b/kernel/audit.c index 227db99..06e3677 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -59,7 +59,6 @@ #include <linux/mutex.h> #include <linux/gfp.h> #include <linux/pid.h> -#include <linux/slab.h> #include <linux/audit.h> diff --git a/kernel/locking/locktorture.c b/kernel/locking/locktorture.c index f24582d..ce46316 100644 --- a/kernel/locking/locktorture.c +++ b/kernel/locking/locktorture.c @@ -596,7 +596,6 @@ static struct lock_torture_ops rwsem_lock_ops = { .name = "rwsem_lock" }; -#include <linux/percpu-rwsem.h> static struct percpu_rw_semaphore pcpu_rwsem; void torture_percpu_rwsem_init(void) diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 557d467..24bc2da 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -66,7 +66,6 @@ #include <linux/kexec.h> #include <linux/bpf.h> #include <linux/mount.h> -#include <linux/pipe_fs_i.h> #include <linux/uaccess.h> #include <asm/processor.h> diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c index 8d70da1b..5ff0c11 100644 --- a/kernel/time/ntp.c +++ b/kernel/time/ntp.c @@ -17,7 +17,6 @@ #include <linux/mm.h> #include <linux/module.h> #include <linux/rtc.h> -#include <linux/math64.h> #include "ntp_internal.h" #include "timekeeping_internal.h" diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c index 8119270..39791b8 100644 --- a/mm/userfaultfd.c +++ b/mm/userfaultfd.c @@ -16,7 +16,6 @@ #include <linux/userfaultfd_k.h> #include <linux/mmu_notifier.h> #include <linux/hugetlb.h> -#include <linux/pagemap.h> #include <linux/shmem_fs.h> #include <asm/tlbflush.h> #include "internal.h" diff --git a/net/core/netprio_cgroup.c b/net/core/netprio_cgroup.c index 1c48109..b905747 100644 --- a/net/core/netprio_cgroup.c +++ b/net/core/netprio_cgroup.c @@ -14,7 +14,6 @@ #include <linux/module.h> #include <linux/slab.h> #include <linux/types.h> -#include <linux/module.h> #include <linux/string.h> #include <linux/errno.h> #include <linux/skbuff.h> diff --git a/net/dsa/slave.c b/net/dsa/slave.c index d6e7a64..a95a55f 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -16,7 +16,6 @@ #include <linux/of_net.h> #include <linux/of_mdio.h> #include <linux/mdio.h> -#include <linux/list.h> #include <net/rtnetlink.h> #include <net/pkt_cls.h> #include <net/tc_act/tc_mirred.h> diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index 59c0899..332b518 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -45,7 +45,6 @@ #include <net/netfilter/nf_conntrack_zones.h> #include <net/netfilter/nf_conntrack_timestamp.h> #include <net/netfilter/nf_conntrack_labels.h> -#include <net/netfilter/nf_conntrack_seqadj.h> #include <net/netfilter/nf_conntrack_synproxy.h> #ifdef CONFIG_NF_NAT_NEEDED #include <net/netfilter/nf_nat_core.h> diff --git a/net/sched/act_meta_mark.c b/net/sched/act_meta_mark.c index 1e3f10e..6445184 100644 --- a/net/sched/act_meta_mark.c +++ b/net/sched/act_meta_mark.c @@ -22,7 +22,6 @@ #include <net/pkt_sched.h> #include <uapi/linux/tc_act/tc_ife.h> #include <net/tc_act/tc_ife.h> -#include <linux/rtnetlink.h> static int skbmark_encode(struct sk_buff *skb, void *skbdata, struct tcf_meta_info *e) diff --git a/net/sched/act_meta_skbtcindex.c b/net/sched/act_meta_skbtcindex.c index 2ea1f26..7221437 100644 --- a/net/sched/act_meta_skbtcindex.c +++ b/net/sched/act_meta_skbtcindex.c @@ -22,7 +22,6 @@ #include <net/pkt_sched.h> #include <uapi/linux/tc_act/tc_ife.h> #include <net/tc_act/tc_ife.h> -#include <linux/rtnetlink.h> static int skbtcindex_encode(struct sk_buff *skb, void *skbdata, struct tcf_meta_info *e) diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index ddcf04b..f40256a 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -23,7 +23,6 @@ #include <linux/skbuff.h> #include <linux/init.h> #include <linux/kmod.h> -#include <linux/err.h> #include <linux/slab.h> #include <net/net_namespace.h> #include <net/sock.h> diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c index ac152b4..507859c 100644 --- a/net/sched/cls_u32.c +++ b/net/sched/cls_u32.c @@ -45,7 +45,6 @@ #include <net/netlink.h> #include <net/act_api.h> #include <net/pkt_cls.h> -#include <linux/netdevice.h> #include <linux/idr.h> struct tc_u_knode { diff --git a/samples/bpf/bpf_load.c b/samples/bpf/bpf_load.c index 522ca92..2a1ae26 100644 --- a/samples/bpf/bpf_load.c +++ b/samples/bpf/bpf_load.c @@ -1,6 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 #include <stdio.h> -#include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <libelf.h> diff --git a/samples/bpf/sampleip_user.c b/samples/bpf/sampleip_user.c index 4ed690b..0e1f250 100644 --- a/samples/bpf/sampleip_user.c +++ b/samples/bpf/sampleip_user.c @@ -9,7 +9,6 @@ */ #include <stdio.h> #include <stdlib.h> -#include <stdio.h> #include <unistd.h> #include <errno.h> #include <signal.h> diff --git a/samples/bpf/test_current_task_under_cgroup_user.c b/samples/bpf/test_current_task_under_cgroup_user.c index 65b5fb5..0643b2d 100644 --- a/samples/bpf/test_current_task_under_cgroup_user.c +++ b/samples/bpf/test_current_task_under_cgroup_user.c @@ -11,7 +11,6 @@ #include <unistd.h> #include "libbpf.h" #include "bpf_load.h" -#include <linux/bpf.h> #include "cgroup_helpers.h" #define CGROUP_PATH "/my-cgroup" diff --git a/samples/sockmap/sockmap_user.c b/samples/sockmap/sockmap_user.c index 7cc9d22..7c8ccd6 100644 --- a/samples/sockmap/sockmap_user.c +++ b/samples/sockmap/sockmap_user.c @@ -19,7 +19,6 @@ #include <unistd.h> #include <string.h> #include <errno.h> -#include <sys/ioctl.h> #include <stdbool.h> #include <signal.h> #include <fcntl.h> diff --git a/security/apparmor/apparmorfs.c b/security/apparmor/apparmorfs.c index d4fa04d..657b294 100644 --- a/security/apparmor/apparmorfs.c +++ b/security/apparmor/apparmorfs.c @@ -33,7 +33,6 @@ #include "include/context.h" #include "include/crypto.h" #include "include/ipc.h" -#include "include/policy_ns.h" #include "include/label.h" #include "include/policy.h" #include "include/policy_ns.h" diff --git a/sound/soc/hisilicon/hi6210-i2s.c b/sound/soc/hisilicon/hi6210-i2s.c index 0c8f86d..07a5720 100644 --- a/sound/soc/hisilicon/hi6210-i2s.c +++ b/sound/soc/hisilicon/hi6210-i2s.c @@ -36,7 +36,6 @@ #include <linux/of_irq.h> #include <linux/mfd/syscon.h> #include <linux/reset-controller.h> -#include <linux/clk.h> #include "hi6210-i2s.h" diff --git a/sound/soc/zte/zx-i2s.c b/sound/soc/zte/zx-i2s.c index 9a05659..93428e1 100644 --- a/sound/soc/zte/zx-i2s.c +++ b/sound/soc/zte/zx-i2s.c @@ -20,9 +20,6 @@ #include <sound/core.h> #include <sound/dmaengine_pcm.h> #include <sound/initval.h> -#include <sound/pcm.h> -#include <sound/pcm_params.h> -#include <sound/soc.h> #define ZX_I2S_PROCESS_CTRL 0x04 #define ZX_I2S_TIMING_CTRL 0x08 diff --git a/tools/perf/bench/futex-hash.c b/tools/perf/bench/futex-hash.c index 58ae6ed..4a3c1df 100644 --- a/tools/perf/bench/futex-hash.c +++ b/tools/perf/bench/futex-hash.c @@ -26,7 +26,6 @@ #include "futex.h" #include <err.h> -#include <sys/time.h> static unsigned int nthreads = 0; static unsigned int nsecs = 10; diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c index 17855c4..54d2cec 100644 --- a/tools/perf/builtin-c2c.c +++ b/tools/perf/builtin-c2c.c @@ -27,13 +27,10 @@ #include "sort.h" #include "tool.h" #include "data.h" -#include "sort.h" #include "event.h" #include "evlist.h" #include "evsel.h" -#include <asm/bug.h> #include "ui/browsers/hists.h" -#include "evlist.h" #include "thread.h" struct c2c_hists { diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 3d7f33e..93ef455 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -51,7 +51,6 @@ #include <signal.h> #include <sys/mman.h> #include <sys/wait.h> -#include <asm/bug.h> #include <linux/time64.h> struct switch_output { diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 59af5a8..1d9af8a 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -63,7 +63,6 @@ #include "util/group.h" #include "util/session.h" #include "util/tool.h" -#include "util/group.h" #include "util/string2.h" #include "util/metricgroup.h" #include "asm/bug.h" diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c index f067961..18b0644 100644 --- a/tools/perf/tests/parse-events.c +++ b/tools/perf/tests/parse-events.c @@ -13,7 +13,6 @@ #include <unistd.h> #include <linux/kernel.h> #include <linux/hw_breakpoint.h> -#include <api/fs/fs.h> #include <api/fs/tracing_path.h> #define PERF_TP_SAMPLE_TYPE (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | \ diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c index a3349141..c76687e 100644 --- a/tools/perf/util/auxtrace.c +++ b/tools/perf/util/auxtrace.c @@ -31,9 +31,6 @@ #include <sys/param.h> #include <stdlib.h> #include <stdio.h> -#include <string.h> -#include <limits.h> -#include <errno.h> #include <linux/list.h> #include "../perf.h" diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 7c0e9d5..3e283b0 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -15,9 +15,7 @@ #include <linux/bitops.h> #include <linux/stringify.h> #include <sys/stat.h> -#include <sys/types.h> #include <sys/utsname.h> -#include <unistd.h> #include "evlist.h" #include "evsel.h" diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c index 0ddd9c1..699311d 100644 --- a/tools/perf/util/metricgroup.c +++ b/tools/perf/util/metricgroup.c @@ -20,12 +20,10 @@ #include "pmu.h" #include "expr.h" #include "rblist.h" -#include "pmu.h" #include <string.h> #include <stdbool.h> #include <errno.h> #include "pmu-events/pmu-events.h" -#include "strbuf.h" #include "strlist.h" #include <assert.h> #include <ctype.h> diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c index c7187f0..c1848b5 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -43,7 +43,6 @@ #include "../db-export.h" #include "../thread-stack.h" #include "../trace-event.h" -#include "../machine.h" #include "../call-path.h" #include "thread_map.h" #include "cpumap.h" diff --git a/tools/testing/selftests/gpio/gpio-mockup-chardev.c b/tools/testing/selftests/gpio/gpio-mockup-chardev.c index 667e916..0424aaa 100644 --- a/tools/testing/selftests/gpio/gpio-mockup-chardev.c +++ b/tools/testing/selftests/gpio/gpio-mockup-chardev.c @@ -12,7 +12,6 @@ #include <unistd.h> #include <stdio.h> #include <stdlib.h> -#include <stdio.h> #include <errno.h> #include <string.h> #include <fcntl.h> diff --git a/tools/testing/selftests/powerpc/pmu/ebb/fork_cleanup_test.c b/tools/testing/selftests/powerpc/pmu/ebb/fork_cleanup_test.c index 167135b..bf599d4 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/fork_cleanup_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/fork_cleanup_test.c @@ -3,7 +3,6 @@ * Licensed under GPLv2. */ -#include <signal.h> #include <stdio.h> #include <stdlib.h> #include <stdbool.h> diff --git a/tools/testing/selftests/powerpc/tm/tm-vmx-unavail.c b/tools/testing/selftests/powerpc/tm/tm-vmx-unavail.c index 137185b..be05b2c 100644 --- a/tools/testing/selftests/powerpc/tm/tm-vmx-unavail.c +++ b/tools/testing/selftests/powerpc/tm/tm-vmx-unavail.c @@ -14,7 +14,6 @@ #include <string.h> #include <stdlib.h> #include <stdio.h> -#include <pthread.h> #include <sys/mman.h> #include <unistd.h> #include <pthread.h> diff --git a/tools/testing/selftests/timers/skew_consistency.c b/tools/testing/selftests/timers/skew_consistency.c index 022b711..8066be9 100644 --- a/tools/testing/selftests/timers/skew_consistency.c +++ b/tools/testing/selftests/timers/skew_consistency.c @@ -32,7 +32,6 @@ #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> -#include <stdlib.h> #include <string.h> #include <sys/wait.h> #include "../kselftest.h" diff --git a/tools/testing/selftests/x86/mpx-dig.c b/tools/testing/selftests/x86/mpx-dig.c index c13607e..880fbf6 100644 --- a/tools/testing/selftests/x86/mpx-dig.c +++ b/tools/testing/selftests/x86/mpx-dig.c @@ -8,9 +8,7 @@ #include <unistd.h> #include <stdio.h> #include <errno.h> -#include <sys/types.h> #include <sys/stat.h> -#include <unistd.h> #include <sys/mman.h> #include <string.h> #include <fcntl.h> diff --git a/tools/testing/selftests/x86/mpx-mini-test.c b/tools/testing/selftests/x86/mpx-mini-test.c index ec0f6b4..f17e0a1 100644 --- a/tools/testing/selftests/x86/mpx-mini-test.c +++ b/tools/testing/selftests/x86/mpx-mini-test.c @@ -722,10 +722,6 @@ void mpx_cleanup(void) } /*-------------- the following is test case ---------------*/ -#include <stdint.h> -#include <stdbool.h> -#include <stdlib.h> -#include <stdio.h> #include <time.h> uint64_t num_lower_brs; diff --git a/tools/testing/selftests/x86/unwind_vdso.c b/tools/testing/selftests/x86/unwind_vdso.c index 00a26a8..9731133 100644 --- a/tools/testing/selftests/x86/unwind_vdso.c +++ b/tools/testing/selftests/x86/unwind_vdso.c @@ -44,7 +44,6 @@ int main() #include <stdbool.h> #include <sys/ptrace.h> #include <sys/user.h> -#include <sys/ucontext.h> #include <link.h> #include <sys/auxv.h> #include <dlfcn.h> -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 4 months

6
5
0 0

[Linux-kselftest-mirror] Difficulties for compilation without extra optimisation

by SF Markus Elfring

Hello, I came along some software modules where I suggested source code adjustments. Example: nfs/write: Use common error handling code in nfs_lock_and_join_requests() https://lkml.org/lkml/2017/11/7/599 https://patchwork.kernel.org/patch/10047013/ https://lkml.kernel.org/r/<7f072f78-eef4-6d87-d233-cee71dac5a32(a)users.sourceforge.net> I would like to check corresponding build results then without extra optimisation applied by the compiler. But I got surprised by error messages for a command like the following. elfring@Sonne:~/Projekte/Linux/next-patched> my_cc=/usr/bin/gcc-7 && LANG=C make -j4 CC="${my_cc}" HOSTCC="${my_cc}" EXTRA_CFLAGS='-O0' allmodconfig fs/nfs/write.o … In file included from ./include/linux/compiler.h:58:0, from ./include/uapi/linux/stddef.h:1, from ./include/linux/stddef.h:4, from ./include/uapi/linux/posix_types.h:4, from ./include/uapi/linux/types.h:13, from ./include/linux/types.h:5, from fs/nfs/write.c:9: ./arch/x86/include/asm/jump_label.h: In function ‘trace_nfs_writeback_page_enter’: ./include/linux/compiler-gcc.h:275:38: warning: asm operand 0 probably doesn’t match constraints #define asm_volatile_goto(x...) do { asm goto(x); asm (""); } while (0) … How do you think about to improve this software situation anyhow? Regards, Markus -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 4 months

3
8
0 0

[Linux-kselftest-mirror] [PATCH 0/5] bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

by Hendrik Brueckner

Perf tool bpf selftests revealed a broken uapi for s390 and arm64. With the BPF_PROG_TYPE_PERF_EVENT program type the bpf_perf_event structure exports the pt_regs structure for all architectures. This fails for s390 and arm64 because pt_regs are not part of the user api and kept in-kernel only. To mitigate the broken uapi, introduce a wrapper that exports pt_regs in an asm-generic way. For arm64, export the exising user_pt_regs structure. For s390, introduce a user_pt_regs structure that exports the beginning of pt_regs. Note that user_pt_regs must export from the beginning of pt_regs as BPF_PROG_TYPE_PERF_EVENT program type is not the only type for running BPF programs. Some more background: For the bpf_perf_event, there is a uapi definition that is passed to the BPF program. For other "probe" points like trace points, kprobes, and uprobes, there is no uapi and the BPF program is always passed pt_regs (which is OK as the BPF program runs in the kernel context). The perf tool can attach BPF programs to all of these "probe" points and, optionally, can create a BPF prologue to access particular arguments (passed as registers). For this, it uses DWARF/CFI information to obtain the register and calls a perf-arch backend function, regs_query_register_offset(). This function returns the index into (user_)pt_regs for a particular register. Then, perf creates a BPF prologue that accesses this register based on the passed stucture from the "probe" point. Part of this series, are also updates to the testing and bpf selftest to deal with asm-specifics. To complete the bpf support in perf, the the regs_query_register_offset function is added for s390 to support BPF prologue creation. Hendrik Brueckner (5): bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type s390/bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type arm64/bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type selftests/bpf: sync kernel headers and introduce arch support in Makefile perf s390: add regs_query_register_offset() arch/arm64/include/asm/perf_event.h | 2 + arch/arm64/include/uapi/asm/bpf_perf_event.h | 9 + arch/s390/include/asm/perf_event.h | 1 + arch/s390/include/asm/ptrace.h | 11 +- arch/s390/include/uapi/asm/bpf_perf_event.h | 9 + arch/s390/include/uapi/asm/ptrace.h | 11 + include/linux/perf_event.h | 6 +- include/uapi/asm-generic/bpf_perf_event.h | 9 + include/uapi/linux/bpf_perf_event.h | 5 +- kernel/events/core.c | 2 +- tools/arch/arm64/include/uapi/asm/bpf_perf_event.h | 9 + tools/arch/s390/include/uapi/asm/bpf_perf_event.h | 9 + tools/arch/s390/include/uapi/asm/ptrace.h | 471 +++++++++++++++++++++ tools/include/uapi/asm-generic/bpf_perf_event.h | 9 + tools/include/uapi/linux/bpf_perf_event.h | 6 +- tools/perf/arch/s390/Makefile | 1 + tools/perf/arch/s390/util/dwarf-regs.c | 32 +- tools/perf/check-headers.sh | 1 + tools/testing/selftests/bpf/Makefile | 14 +- 19 files changed, 602 insertions(+), 15 deletions(-) create mode 100644 arch/arm64/include/uapi/asm/bpf_perf_event.h create mode 100644 arch/s390/include/uapi/asm/bpf_perf_event.h create mode 100644 include/uapi/asm-generic/bpf_perf_event.h create mode 100644 tools/arch/arm64/include/uapi/asm/bpf_perf_event.h create mode 100644 tools/arch/s390/include/uapi/asm/bpf_perf_event.h create mode 100644 tools/arch/s390/include/uapi/asm/ptrace.h create mode 100644 tools/include/uapi/asm-generic/bpf_perf_event.h -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 4 months

2
6
0 0

[Linux-kselftest-mirror] selftests: Testing a write attempt into a full file?

by SF Markus Elfring

Hello, I have constructed another demonstration program. #include <errno.h> #include <stdio.h> #include <stdlib.h> int main(void) { FILE *f = fopen("/dev/full", "a"); if (!f) goto report_failure; { int const c = 'X'; if (fputc(c, f) != c) goto report_failure; } return EXIT_SUCCESS; report_failure: perror(__func__); return errno; } I got the following result. elfring@Sonne:~/Projekte/selftests> gcc-7 putc_into_full_file1.c && ./a.out; echo $? 0 Does such a simple test example need further software development considerations? Regards, Markus -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 4 months

2
1
0 0

[Linux-kselftest-mirror] [PATCH AUTOSEL for 4.9 04/52] x86/selftests: Add clobbers for int80 on x86_64

by alexander.levin＠verizon.com

From: Dmitry Safonov <dsafonov(a)virtuozzo.com> [ Upstream commit 2a4d0c627f5374f365a873dea4e10ae0bb437680 ] Kernel erases R8..R11 registers prior returning to userspace from int80: https://lkml.org/lkml/2009/10/1/164 GCC can reuse these registers and doesn't expect them to change during syscall invocation. I met this kind of bug in CRIU once GCC 6.1 and CLANG stored local variables in those registers and the kernel zerofied them during syscall: https://github.com/xemul/criu/commit/990d33f1a1cdd17bca6c2eb059ab3be2564f7f… By that reason I suggest to add those registers to clobbers in selftests. Also, as noted by Andy - removed unneeded clobber for flags in INT $0x80 inline asm. Signed-off-by: Dmitry Safonov <dsafonov(a)virtuozzo.com> Acked-by: Andy Lutomirski <luto(a)kernel.org> Cc: 0x7f454c46(a)gmail.com Cc: Borislav Petkov <bp(a)alien8.de> Cc: Borislav Petkov <bp(a)suse.de> Cc: Brian Gerst <brgerst(a)gmail.com> Cc: Denys Vlasenko <dvlasenk(a)redhat.com> Cc: H. Peter Anvin <hpa(a)zytor.com> Cc: Josh Poimboeuf <jpoimboe(a)redhat.com> Cc: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Shuah Khan <shuah(a)kernel.org> Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: linux-kselftest(a)vger.kernel.org Link: http://lkml.kernel.org/r/20170213101336.20486-1-dsafonov@virtuozzo.com Signed-off-by: Ingo Molnar <mingo(a)kernel.org> Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com> --- tools/testing/selftests/x86/fsgsbase.c | 2 +- tools/testing/selftests/x86/ldt_gdt.c | 16 +++++++++++----- tools/testing/selftests/x86/ptrace_syscall.c | 3 ++- tools/testing/selftests/x86/single_step_syscall.c | 5 ++++- 4 files changed, 18 insertions(+), 8 deletions(-) diff --git a/tools/testing/selftests/x86/fsgsbase.c b/tools/testing/selftests/x86/fsgsbase.c index 9b4610c6d3fb..f249e042b3b5 100644 --- a/tools/testing/selftests/x86/fsgsbase.c +++ b/tools/testing/selftests/x86/fsgsbase.c @@ -245,7 +245,7 @@ void do_unexpected_base(void) long ret; asm volatile ("int $0x80" : "=a" (ret) : "a" (243), "b" (low_desc) - : "flags"); + : "r8", "r9", "r10", "r11"); memcpy(&desc, low_desc, sizeof(desc)); munmap(low_desc, sizeof(desc)); diff --git a/tools/testing/selftests/x86/ldt_gdt.c b/tools/testing/selftests/x86/ldt_gdt.c index e717fed80219..b9a22f18566a 100644 --- a/tools/testing/selftests/x86/ldt_gdt.c +++ b/tools/testing/selftests/x86/ldt_gdt.c @@ -45,6 +45,12 @@ #define AR_DB (1 << 22) #define AR_G (1 << 23) +#ifdef __x86_64__ +# define INT80_CLOBBERS "r8", "r9", "r10", "r11" +#else +# define INT80_CLOBBERS +#endif + static int nerrs; /* Points to an array of 1024 ints, each holding its own index. */ @@ -634,7 +640,7 @@ static int invoke_set_thread_area(void) asm volatile ("int $0x80" : "=a" (ret), "+m" (low_user_desc) : "a" (243), "b" (low_user_desc) - : "flags"); + : INT80_CLOBBERS); return ret; } @@ -703,7 +709,7 @@ static void test_gdt_invalidation(void) "+a" (eax) : "m" (low_user_desc_clear), [arg1] "r" ((unsigned int)(unsigned long)low_user_desc_clear) - : "flags"); + : INT80_CLOBBERS); if (sel != 0) { result = "FAIL"; @@ -734,7 +740,7 @@ static void test_gdt_invalidation(void) "+a" (eax) : "m" (low_user_desc_clear), [arg1] "r" ((unsigned int)(unsigned long)low_user_desc_clear) - : "flags"); + : INT80_CLOBBERS); if (sel != 0) { result = "FAIL"; @@ -767,7 +773,7 @@ static void test_gdt_invalidation(void) "+a" (eax) : "m" (low_user_desc_clear), [arg1] "r" ((unsigned int)(unsigned long)low_user_desc_clear) - : "flags"); + : INT80_CLOBBERS); #ifdef __x86_64__ syscall(SYS_arch_prctl, ARCH_GET_FS, &new_base); @@ -820,7 +826,7 @@ static void test_gdt_invalidation(void) "+a" (eax) : "m" (low_user_desc_clear), [arg1] "r" ((unsigned int)(unsigned long)low_user_desc_clear) - : "flags"); + : INT80_CLOBBERS); #ifdef __x86_64__ syscall(SYS_arch_prctl, ARCH_GET_GS, &new_base); diff --git a/tools/testing/selftests/x86/ptrace_syscall.c b/tools/testing/selftests/x86/ptrace_syscall.c index b037ce9cf116..eaea92439708 100644 --- a/tools/testing/selftests/x86/ptrace_syscall.c +++ b/tools/testing/selftests/x86/ptrace_syscall.c @@ -58,7 +58,8 @@ static void do_full_int80(struct syscall_args32 *args) asm volatile ("int $0x80" : "+a" (args->nr), "+b" (args->arg0), "+c" (args->arg1), "+d" (args->arg2), - "+S" (args->arg3), "+D" (args->arg4), "+r" (bp)); + "+S" (args->arg3), "+D" (args->arg4), "+r" (bp) + : : "r8", "r9", "r10", "r11"); args->arg5 = bp; #else sys32_helper(args, int80_and_ret); diff --git a/tools/testing/selftests/x86/single_step_syscall.c b/tools/testing/selftests/x86/single_step_syscall.c index 50c26358e8b7..a48da95c18fd 100644 --- a/tools/testing/selftests/x86/single_step_syscall.c +++ b/tools/testing/selftests/x86/single_step_syscall.c @@ -56,9 +56,11 @@ static volatile sig_atomic_t sig_traps; #ifdef __x86_64__ # define REG_IP REG_RIP # define WIDTH "q" +# define INT80_CLOBBERS "r8", "r9", "r10", "r11" #else # define REG_IP REG_EIP # define WIDTH "l" +# define INT80_CLOBBERS #endif static unsigned long get_eflags(void) @@ -140,7 +142,8 @@ int main() printf("[RUN]\tSet TF and check int80\n"); set_eflags(get_eflags() | X86_EFLAGS_TF); - asm volatile ("int $0x80" : "=a" (tmp) : "a" (SYS_getpid)); + asm volatile ("int $0x80" : "=a" (tmp) : "a" (SYS_getpid) + : INT80_CLOBBERS); check_result(); /* -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 4 months

2
2
0 0

[Linux-kselftest-mirror] selftests: x86_64: kselftest mpx-mini-test_64 - no MPX support - failed - 3869 Aborted (core dumped)

by Naresh Kamboju

Hi, We have found "no MPX support" bug while running kselftests on SuperServer 5019S-ML - x86_64 device. Please provide your comments to fix this bug. LKFT: 4.4-rc 4.9-rc 4.13-rc 4.14-rc: x86: kselftest mpx-mini-test_64 - no MPX support - failed - 3869 Aborted (core dumped) (edit) https://bugs.linaro.org/show_bug.cgi?id=3497 NOTE: Please add your self to Bugzilla to add comments. Best regards Naresh Kamboju -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 4 months

3
6
0 0

[Linux-kselftest-mirror] [PATCH 2/2] [RFC] packet: experimental support for 64-bit timestamps

by Arnd Bergmann

I tried to figure out what it would take to do a version 4 mmap packet socket interface to completely avoid the y2106 overflow problem. This is what I came up with, reusing most of the v3 code, except for the parts where we access the timestamps. For kselftest, I'm adding support for testing v4 in addition to v1-v3, but the test currently does not look at the timestamps, so it won't check that the timestamp format actually works as intended, only that I didn't break the parts that worked in the v3 selftest. Overall, this is more of a mess than I expected, so it's probably not worth doing a v4 format just for the timestamp, but the patch can serve as a reference for anyone that needs a new format for other reasons and fixes this along with the other changes. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- Untested and rather invasive, so don't apply this part without discussion and testing --- include/uapi/linux/if_packet.h | 24 +++++- net/packet/af_packet.c | 115 ++++++++++++++++++++-------- tools/testing/selftests/net/psock_tpacket.c | 65 +++++++++------- 3 files changed, 142 insertions(+), 62 deletions(-) diff --git a/include/uapi/linux/if_packet.h b/include/uapi/linux/if_packet.h index 67b61d91d89b..c2cf29acdd40 100644 --- a/include/uapi/linux/if_packet.h +++ b/include/uapi/linux/if_packet.h @@ -177,8 +177,27 @@ struct tpacket3_hdr { __u8 tp_padding[8]; }; +struct tpacket4_hdr { + __u32 tp_next_offset; + __u32 tp_nsec_hi; + __u32 tp_nsec_lo; + __u32 tp_snaplen; + __u32 tp_len; + __u32 tp_status; + __u16 tp_mac; + __u16 tp_net; + /* pkt_hdr variants */ + union { + struct tpacket_hdr_variant1 hv1; + }; + __u8 tp_padding[8]; +}; + struct tpacket_bd_ts { - unsigned int ts_sec; + union { + unsigned int ts_nsec_hi; + unsigned int ts_sec; + }; union { unsigned int ts_usec; unsigned int ts_nsec; @@ -250,7 +269,8 @@ struct tpacket_block_desc { enum tpacket_versions { TPACKET_V1, TPACKET_V2, - TPACKET_V3 + TPACKET_V3, + TPACKET_V4, }; /* diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 7432c6699818..34a07e4a93a5 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -164,6 +164,7 @@ union tpacket_uhdr { struct tpacket_hdr *h1; struct tpacket2_hdr *h2; struct tpacket3_hdr *h3; + struct tpacket4_hdr *h4; void *raw; }; @@ -200,7 +201,7 @@ static void prb_retire_current_block(struct tpacket_kbdq_core *, struct packet_sock *, unsigned int status); static int prb_queue_frozen(struct tpacket_kbdq_core *); static void prb_open_block(struct tpacket_kbdq_core *, - struct tpacket_block_desc *); + struct tpacket_block_desc *, struct packet_sock *po); static void prb_retire_rx_blk_timer_expired(struct timer_list *); static void _prb_refresh_rx_retire_blk_timer(struct tpacket_kbdq_core *); static void prb_fill_rxhash(struct tpacket_kbdq_core *, struct tpacket3_hdr *); @@ -404,6 +405,7 @@ static void __packet_set_status(struct packet_sock *po, void *frame, int status) flush_dcache_page(pgv_to_page(&h.h2->tp_status)); break; case TPACKET_V3: + case TPACKET_V4: h.h3->tp_status = status; flush_dcache_page(pgv_to_page(&h.h3->tp_status)); break; @@ -430,6 +432,7 @@ static int __packet_get_status(struct packet_sock *po, void *frame) flush_dcache_page(pgv_to_page(&h.h2->tp_status)); return h.h2->tp_status; case TPACKET_V3: + case TPACKET_V4: flush_dcache_page(pgv_to_page(&h.h3->tp_status)); return h.h3->tp_status; default: @@ -439,17 +442,17 @@ static int __packet_get_status(struct packet_sock *po, void *frame) } } -static __u32 tpacket_get_timestamp(struct sk_buff *skb, struct timespec64 *ts, +static __u32 tpacket_get_timestamp(struct sk_buff *skb, s64 *stamp, unsigned int flags) { struct skb_shared_hwtstamps *shhwtstamps = skb_hwtstamps(skb); if (shhwtstamps && (flags & SOF_TIMESTAMPING_RAW_HARDWARE) && - ktime_to_timespec64_cond(shhwtstamps->hwtstamp, ts)) + (*stamp = ktime_to_ns(shhwtstamps->hwtstamp))) return TP_STATUS_TS_RAW_HARDWARE; - if (ktime_to_timespec64_cond(skb->tstamp, ts)) + if ((*stamp = ktime_to_ns(skb->tstamp))) return TP_STATUS_TS_SOFTWARE; return 0; @@ -460,19 +463,15 @@ static __u32 __packet_set_timestamp(struct packet_sock *po, void *frame, { union tpacket_uhdr h; struct timespec64 ts; + s64 stamp; __u32 ts_status; - if (!(ts_status = tpacket_get_timestamp(skb, &ts, po->tp_tstamp))) + if (!(ts_status = tpacket_get_timestamp(skb, &stamp, po->tp_tstamp))) return 0; h.raw = frame; - /* - * versions 1 through 3 overflow the timestamps in y2106, since they - * all store the seconds in a 32-bit unsigned integer. - * If we create a version 4, that should have a 64-bit timestamp, - * either 64-bit seconds + 32-bit nanoseconds, or just 64-bit - * nanoseconds. - */ + + ts = ns_to_timespec64(stamp); switch (po->tp_version) { case TPACKET_V1: h.h1->tp_sec = ts.tv_sec; @@ -486,6 +485,9 @@ static __u32 __packet_set_timestamp(struct packet_sock *po, void *frame, h.h3->tp_sec = ts.tv_sec; h.h3->tp_nsec = ts.tv_nsec; break; + case TPACKET_V4: + h.h4->tp_nsec_hi = upper_32_bits(stamp); + h.h4->tp_nsec_lo = lower_32_bits(stamp); default: WARN(1, "TPACKET version not supported.\n"); BUG(); @@ -633,7 +635,7 @@ static void init_prb_bdqc(struct packet_sock *po, p1->max_frame_len = p1->kblk_size - BLK_PLUS_PRIV(p1->blk_sizeof_priv); prb_init_ft_ops(p1, req_u); prb_setup_retire_blk_timer(po); - prb_open_block(p1, pbd); + prb_open_block(p1, pbd, po); } /* Do NOT update the last_blk_num first. @@ -730,7 +732,7 @@ static void prb_retire_rx_blk_timer_expired(struct timer_list *t) * opening a block thaws the queue,restarts timer * Thawing/timer-refresh is a side effect. */ - prb_open_block(pkc, pbd); + prb_open_block(pkc, pbd, po); goto out; } } @@ -792,30 +794,43 @@ static void prb_close_block(struct tpacket_kbdq_core *pkc1, { __u32 status = TP_STATUS_USER | stat; - struct tpacket3_hdr *last_pkt; + struct tpacket3_hdr *last_pkt_v3; + struct tpacket4_hdr *last_pkt_v4; struct tpacket_hdr_v1 *h1 = &pbd1->hdr.bh1; struct sock *sk = &po->sk; if (po->stats.stats3.tp_drops) status |= TP_STATUS_LOSING; - last_pkt = (struct tpacket3_hdr *)pkc1->prev; - last_pkt->tp_next_offset = 0; + last_pkt_v3 = (struct tpacket3_hdr *)pkc1->prev; + last_pkt_v4 = (struct tpacket4_hdr *)pkc1->prev; + last_pkt_v3->tp_next_offset = 0; /* Get the ts of the last pkt */ if (BLOCK_NUM_PKTS(pbd1)) { - h1->ts_last_pkt.ts_sec = last_pkt->tp_sec; - h1->ts_last_pkt.ts_nsec = last_pkt->tp_nsec; + if (po->tp_version == TPACKET_V3) { + h1->ts_last_pkt.ts_sec = last_pkt_v3->tp_sec; + h1->ts_last_pkt.ts_nsec = last_pkt_v3->tp_nsec; + } else { + h1->ts_last_pkt.ts_nsec_hi = last_pkt_v4->tp_nsec_hi; + h1->ts_last_pkt.ts_nsec = last_pkt_v4->tp_nsec_lo; + } } else { /* Ok, we tmo'd - so get the current time. * * It shouldn't really happen as we don't close empty * blocks. See prb_retire_rx_blk_timer_expired(). */ - struct timespec64 ts; - ktime_get_real_ts64(&ts); - h1->ts_last_pkt.ts_sec = ts.tv_sec; - h1->ts_last_pkt.ts_nsec = ts.tv_nsec; + if (po->tp_version == TPACKET_V3) { + struct timespec64 ts; + ktime_get_real_ts64(&ts); + h1->ts_last_pkt.ts_sec = ts.tv_sec; + h1->ts_last_pkt.ts_nsec = ts.tv_nsec; + } else { + u64 ns = ktime_get_real_ns(); + h1->ts_last_pkt.ts_nsec_hi = upper_32_bits(ns); + h1->ts_last_pkt.ts_nsec = lower_32_bits(ns); + } } smp_wmb(); @@ -841,9 +856,8 @@ static void prb_thaw_queue(struct tpacket_kbdq_core *pkc) * */ static void prb_open_block(struct tpacket_kbdq_core *pkc1, - struct tpacket_block_desc *pbd1) + struct tpacket_block_desc *pbd1, struct packet_sock *po) { - struct timespec64 ts; struct tpacket_hdr_v1 *h1 = &pbd1->hdr.bh1; smp_rmb(); @@ -856,10 +870,19 @@ static void prb_open_block(struct tpacket_kbdq_core *pkc1, BLOCK_NUM_PKTS(pbd1) = 0; BLOCK_LEN(pbd1) = BLK_PLUS_PRIV(pkc1->blk_sizeof_priv); - ktime_get_real_ts64(&ts); - h1->ts_first_pkt.ts_sec = ts.tv_sec; - h1->ts_first_pkt.ts_nsec = ts.tv_nsec; + if (po->tp_version == TPACKET_V3) { + struct timespec64 ts; + + ktime_get_real_ts64(&ts); + h1->ts_first_pkt.ts_sec = ts.tv_sec; + h1->ts_first_pkt.ts_nsec = ts.tv_nsec; + } else { + s64 ns = ktime_get_real_ns(); + + h1->ts_first_pkt.ts_nsec_hi = upper_32_bits(ns); + h1->ts_first_pkt.ts_nsec = lower_32_bits(ns); + } pkc1->pkblk_start = (char *)pbd1; pkc1->nxt_offset = pkc1->pkblk_start + BLK_PLUS_PRIV(pkc1->blk_sizeof_priv); @@ -936,7 +959,7 @@ static void *prb_dispatch_next_block(struct tpacket_kbdq_core *pkc, * open this block and return the offset where the first packet * needs to get stored. */ - prb_open_block(pkc, pbd); + prb_open_block(pkc, pbd, po); return (void *)pkc->nxt_offset; } @@ -1068,7 +1091,7 @@ static void *__packet_lookup_frame_in_block(struct packet_sock *po, * opening a block also thaws the queue. * Thawing is a side effect. */ - prb_open_block(pkc, pbd); + prb_open_block(pkc, pbd, po); } } @@ -1113,6 +1136,7 @@ static void *packet_current_rx_frame(struct packet_sock *po, po->rx_ring.head, status); return curr; case TPACKET_V3: + case TPACKET_V4: return __packet_lookup_frame_in_block(po, skb, status, len); default: WARN(1, "TPACKET version not supported\n"); @@ -1171,6 +1195,7 @@ static void packet_increment_rx_head(struct packet_sock *po, case TPACKET_V2: return packet_increment_head(rb); case TPACKET_V3: + case TPACKET_V4: default: WARN(1, "TPACKET version not supported.\n"); BUG(); @@ -1279,7 +1304,7 @@ static int __packet_rcv_has_room(struct packet_sock *po, struct sk_buff *skb) return ROOM_NONE; } - if (po->tp_version == TPACKET_V3) { + if (po->tp_version == TPACKET_V3 || po->tp_version == TPACKET_V4) { if (__tpacket_v3_has_room(po, ROOM_POW_OFF)) ret = ROOM_NORMAL; else if (__tpacket_v3_has_room(po, 0)) @@ -2192,6 +2217,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, unsigned short macoff, netoff, hdrlen; struct sk_buff *copy_skb = NULL; struct timespec64 ts; + u64 ns; __u32 ts_status; bool is_drop_n_account = false; bool do_vnet = false; @@ -2318,7 +2344,9 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, skb_copy_bits(skb, 0, h.raw + macoff, snaplen); - if (!(ts_status = tpacket_get_timestamp(skb, &ts, po->tp_tstamp))) + if ((ts_status = tpacket_get_timestamp(skb, &ns, po->tp_tstamp))) + ts = ns_to_timespec64(ns); + else ktime_get_real_ts64(&ts); status |= ts_status; @@ -2365,6 +2393,19 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, memset(h.h3->tp_padding, 0, sizeof(h.h3->tp_padding)); hdrlen = sizeof(*h.h3); break; + case TPACKET_V4: + /* identical to v3, except for the timestamp */ + h.h4->tp_status |= status; + h.h4->tp_len = skb->len; + h.h4->tp_snaplen = snaplen; + h.h4->tp_mac = macoff; + h.h4->tp_net = netoff; + ns = timespec64_to_ns(&ts); + h.h4->tp_nsec_hi = upper_32_bits(ns); + h.h4->tp_nsec_lo = lower_32_bits(ns); + memset(h.h3->tp_padding, 0, sizeof(h.h3->tp_padding)); + hdrlen = sizeof(*h.h3); + break; default: BUG(); } @@ -2570,6 +2611,7 @@ static int tpacket_parse_header(struct packet_sock *po, void *frame, ph.raw = frame; switch (po->tp_version) { + case TPACKET_V4: case TPACKET_V3: if (ph.h3->tp_next_offset != 0) { pr_warn_once("variable sized slot not supported"); @@ -2596,6 +2638,7 @@ static int tpacket_parse_header(struct packet_sock *po, void *frame, off_max = po->tx_ring.frame_size - tp_len; if (po->sk.sk_type == SOCK_DGRAM) { switch (po->tp_version) { + case TPACKET_V4: case TPACKET_V3: off = ph.h3->tp_net; break; @@ -2608,6 +2651,7 @@ static int tpacket_parse_header(struct packet_sock *po, void *frame, } } else { switch (po->tp_version) { + case TPACKET_V4: case TPACKET_V3: off = ph.h3->tp_mac; break; @@ -3658,6 +3702,7 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv len = sizeof(req_u.req); break; case TPACKET_V3: + case TPACKET_V4: default: len = sizeof(req_u.req3); break; @@ -3693,6 +3738,7 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv case TPACKET_V1: case TPACKET_V2: case TPACKET_V3: + case TPACKET_V4: break; default: return -EINVAL; @@ -3868,7 +3914,7 @@ static int packet_getsockopt(struct socket *sock, int level, int optname, memset(&po->stats, 0, sizeof(po->stats)); spin_unlock_bh(&sk->sk_receive_queue.lock); - if (po->tp_version == TPACKET_V3) { + if (po->tp_version == TPACKET_V3 || po->tp_version == TPACKET_V4) { lv = sizeof(struct tpacket_stats_v3); st.stats3.tp_packets += st.stats3.tp_drops; data = &st.stats3; @@ -3906,6 +3952,7 @@ static int packet_getsockopt(struct socket *sock, int level, int optname, val = sizeof(struct tpacket2_hdr); break; case TPACKET_V3: + case TPACKET_V4: val = sizeof(struct tpacket3_hdr); break; default: @@ -4250,6 +4297,7 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u, po->tp_hdrlen = TPACKET2_HDRLEN; break; case TPACKET_V3: + case TPACKET_V4: po->tp_hdrlen = TPACKET3_HDRLEN; break; } @@ -4284,6 +4332,7 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u, if (unlikely(!pg_vec)) goto out; switch (po->tp_version) { + case TPACKET_V4: case TPACKET_V3: /* Block transmit is not supported yet */ if (!tx_ring) { diff --git a/tools/testing/selftests/net/psock_tpacket.c b/tools/testing/selftests/net/psock_tpacket.c index 7f6cd9fdacf3..b497632b6a70 100644 --- a/tools/testing/selftests/net/psock_tpacket.c +++ b/tools/testing/selftests/net/psock_tpacket.c @@ -3,7 +3,8 @@ * Author: Daniel Borkmann <dborkman(a)redhat.com> * Chetan Loke <loke.chetan(a)gmail.com> (TPACKET_V3 usage example) * - * A basic test of packet socket's TPACKET_V1/TPACKET_V2/TPACKET_V3 behavior. + * A basic test of packet socket's TPACKET_V1/TPACKET_V2/TPACKET_V3/TPACKET_V4 + * behavior. * * Control: * Test the setup of the TPACKET socket with different patterns that are @@ -19,6 +20,7 @@ * - TPACKET_V1: RX_RING, TX_RING * - TPACKET_V2: RX_RING, TX_RING * - TPACKET_V3: RX_RING + * - TPACKET_V4: RX_RING * * License (GPLv2): * @@ -310,12 +312,12 @@ static inline void __v2_tx_user_ready(struct tpacket2_hdr *hdr) __sync_synchronize(); } -static inline int __v3_tx_kernel_ready(struct tpacket3_hdr *hdr) +static inline int __v3_v4_tx_kernel_ready(struct tpacket3_hdr *hdr) { return !(hdr->tp_status & (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING)); } -static inline void __v3_tx_user_ready(struct tpacket3_hdr *hdr) +static inline void __v3_v4_tx_user_ready(struct tpacket3_hdr *hdr) { hdr->tp_status = TP_STATUS_SEND_REQUEST; __sync_synchronize(); @@ -329,7 +331,8 @@ static inline int __tx_kernel_ready(void *base, int version) case TPACKET_V2: return __v2_tx_kernel_ready(base); case TPACKET_V3: - return __v3_tx_kernel_ready(base); + case TPACKET_V4: + return __v3_v4_tx_kernel_ready(base); default: bug_on(1); return 0; @@ -346,7 +349,8 @@ static inline void __tx_user_ready(void *base, int version) __v2_tx_user_ready(base); break; case TPACKET_V3: - __v3_tx_user_ready(base); + case TPACKET_V4: + __v3_v4_tx_user_ready(base); break; } } @@ -372,6 +376,7 @@ static inline void *get_next_frame(struct ring *ring, int n) case TPACKET_V2: return ring->rd[n].iov_base; case TPACKET_V3: + case TPACKET_V4: return f0 + (n * ring->req3.tp_frame_size); default: bug_on(1); @@ -454,7 +459,8 @@ static void walk_tx(int sock, struct ring *ring) packet_len); total_bytes += ppd.v2->tp_h.tp_snaplen; break; - case TPACKET_V3: { + case TPACKET_V3: + case TPACKET_V4: { struct tpacket3_hdr *tx = next; tx->tp_snaplen = packet_len; @@ -517,22 +523,22 @@ static void walk_v1_v2(int sock, struct ring *ring) walk_tx(sock, ring); } -static uint64_t __v3_prev_block_seq_num = 0; +static uint64_t __v3_v4_prev_block_seq_num = 0; -void __v3_test_block_seq_num(struct block_desc *pbd) +void __v3_v4_test_block_seq_num(struct block_desc *pbd) { - if (__v3_prev_block_seq_num + 1 != pbd->h1.seq_num) { + if (__v3_v4_prev_block_seq_num + 1 != pbd->h1.seq_num) { fprintf(stderr, "\nprev_block_seq_num:%"PRIu64", expected " "seq:%"PRIu64" != actual seq:%"PRIu64"\n", - __v3_prev_block_seq_num, __v3_prev_block_seq_num + 1, + __v3_v4_prev_block_seq_num, __v3_v4_prev_block_seq_num + 1, (uint64_t) pbd->h1.seq_num); exit(1); } - __v3_prev_block_seq_num = pbd->h1.seq_num; + __v3_v4_prev_block_seq_num = pbd->h1.seq_num; } -static void __v3_test_block_len(struct block_desc *pbd, uint32_t bytes, int block_num) +static void __v3_v4_test_block_len(struct block_desc *pbd, uint32_t bytes, int block_num) { if (pbd->h1.num_pkts && bytes != pbd->h1.blk_len) { fprintf(stderr, "\nblock:%u with %upackets, expected " @@ -542,23 +548,23 @@ static void __v3_test_block_len(struct block_desc *pbd, uint32_t bytes, int bloc } } -static void __v3_test_block_header(struct block_desc *pbd, const int block_num) +static void __v3_v4_test_block_header(struct block_desc *pbd, const int block_num) { if ((pbd->h1.block_status & TP_STATUS_USER) == 0) { fprintf(stderr, "\nblock %u: not in TP_STATUS_USER\n", block_num); exit(1); } - __v3_test_block_seq_num(pbd); + __v3_v4_test_block_seq_num(pbd); } -static void __v3_walk_block(struct block_desc *pbd, const int block_num) +static void __v3_v4_walk_block(struct block_desc *pbd, const int block_num) { int num_pkts = pbd->h1.num_pkts, i; unsigned long bytes = 0, bytes_with_padding = ALIGN_8(sizeof(*pbd)); struct tpacket3_hdr *ppd; - __v3_test_block_header(pbd, block_num); + __v3_v4_test_block_header(pbd, block_num); ppd = (struct tpacket3_hdr *) ((uint8_t *) pbd + pbd->h1.offset_to_first_pkt); @@ -580,17 +586,17 @@ static void __v3_walk_block(struct block_desc *pbd, const int block_num) __sync_synchronize(); } - __v3_test_block_len(pbd, bytes_with_padding, block_num); + __v3_v4_test_block_len(pbd, bytes_with_padding, block_num); total_bytes += bytes; } -void __v3_flush_block(struct block_desc *pbd) +void __v3_v4_flush_block(struct block_desc *pbd) { pbd->h1.block_status = TP_STATUS_KERNEL; __sync_synchronize(); } -static void walk_v3_rx(int sock, struct ring *ring) +static void walk_v3_v4_rx(int sock, struct ring *ring) { unsigned int block_num = 0; struct pollfd pfd; @@ -614,8 +620,8 @@ static void walk_v3_rx(int sock, struct ring *ring) while ((pbd->h1.block_status & TP_STATUS_USER) == 0) poll(&pfd, 1, 1); - __v3_walk_block(pbd, block_num); - __v3_flush_block(pbd); + __v3_v4_walk_block(pbd, block_num); + __v3_v4_flush_block(pbd); block_num = (block_num + 1) % ring->rd_num; } @@ -623,7 +629,7 @@ static void walk_v3_rx(int sock, struct ring *ring) pair_udp_close(udp_sock); if (total_packets != 2 * NUM_PACKETS) { - fprintf(stderr, "walk_v3_rx: received %u out of %u pkts\n", + fprintf(stderr, "walk_v3_v4_rx: received %u out of %u pkts\n", total_packets, NUM_PACKETS); exit(1); } @@ -631,10 +637,10 @@ static void walk_v3_rx(int sock, struct ring *ring) fprintf(stderr, " %u pkts (%u bytes)", NUM_PACKETS, total_bytes >> 1); } -static void walk_v3(int sock, struct ring *ring) +static void walk_v3_v4(int sock, struct ring *ring) { if (ring->type == PACKET_RX_RING) - walk_v3_rx(sock, ring); + walk_v3_v4_rx(sock, ring); else walk_tx(sock, ring); } @@ -655,7 +661,7 @@ static void __v1_v2_fill(struct ring *ring, unsigned int blocks) ring->flen = ring->req.tp_frame_size; } -static void __v3_fill(struct ring *ring, unsigned int blocks, int type) +static void __v3_v4_fill(struct ring *ring, unsigned int blocks, int type) { if (type == PACKET_RX_RING) { ring->req3.tp_retire_blk_tov = 64; @@ -671,7 +677,7 @@ static void __v3_fill(struct ring *ring, unsigned int blocks, int type) ring->req3.tp_block_nr; ring->mm_len = ring->req3.tp_block_size * ring->req3.tp_block_nr; - ring->walk = walk_v3; + ring->walk = walk_v3_v4; ring->rd_num = ring->req3.tp_block_nr; ring->flen = ring->req3.tp_block_size; } @@ -695,7 +701,8 @@ static void setup_ring(int sock, struct ring *ring, int version, int type) break; case TPACKET_V3: - __v3_fill(ring, blocks, type); + case TPACKET_V4: + __v3_v4_fill(ring, blocks, type); ret = setsockopt(sock, SOL_PACKET, type, &ring->req3, sizeof(ring->req3)); break; @@ -804,6 +811,7 @@ static const char *tpacket_str[] = { [TPACKET_V1] = "TPACKET_V1", [TPACKET_V2] = "TPACKET_V2", [TPACKET_V3] = "TPACKET_V3", + [TPACKET_V4] = "TPACKET_V4", }; static const char *type_str[] = { @@ -854,6 +862,9 @@ int main(void) ret |= test_tpacket(TPACKET_V3, PACKET_RX_RING); ret |= test_tpacket(TPACKET_V3, PACKET_TX_RING); + ret |= test_tpacket(TPACKET_V4, PACKET_RX_RING); + ret |= test_tpacket(TPACKET_V4, PACKET_TX_RING); + if (ret) return 1; -- 2.9.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

4
7
0 0

[Linux-kselftest-mirror] [PATCH 0/2] selftests: ftrace: Fix multiple-kprobe testcase

by Masami Hiramatsu

Hi, These patches are fixing a bug and improve testcase to ensure adding 256 kprobe events for test. The 1st patch is clearly a bug, so it should be fixed in stable kernel too. Thank you, --- Masami Hiramatsu (2): [BUGFIX] selftest: ftrace: Fix to pick text symbols for kprobes selftest: ftrace: Fix to add 256 kprobe events correctly .../ftrace/test.d/kprobe/multiple_kprobes.tc | 21 +++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) -- Masami Hiramatsu (Linaro) <mhiramat(a)kernel.org> -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

1
2
0 0

Re: [Linux-kselftest-mirror] [RFC PATCH for 4.15 v3 15/22] rseq: selftests: Provide self-tests

by Peter Zijlstra

On Tue, Nov 21, 2017 at 09:18:53AM -0500, Mathieu Desnoyers wrote: > +int percpu_list_push(struct percpu_list *list, struct percpu_list_node *node) > +{ > + intptr_t *targetptr, newval, expect; > + int cpu, ret; > + > + /* Try fast path. */ > + cpu = rseq_cpu_start(); > + /* Load list->c[cpu].head with single-copy atomicity. */ > + expect = (intptr_t)READ_ONCE(list->c[cpu].head); > + newval = (intptr_t)node; > + targetptr = (intptr_t *)&list->c[cpu].head; > + node->next = (struct percpu_list_node *)expect; > + ret = rseq_cmpeqv_storev(targetptr, expect, newval, cpu); > + if (likely(!ret)) > + return cpu; > + return cpu; > +} > +static inline __attribute__((always_inline)) > +int rseq_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, > + int cpu) > +{ > + __asm__ __volatile__ goto ( > + RSEQ_ASM_DEFINE_TABLE(3, __rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) > + RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs) > + RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f) So the actual C part of the RSEQ is subject to an ABA, right? We can get migrated to another CPU and back again without then failing here. It used to be that this was caught by the sequence count, but that is now gone. The thing that makes it work is the compare against @v: > + "cmpq %[v], %[expect]\n\t" > + "jnz 5f\n\t" That then ensures things are still as we observed them before (although this itself is also subject to ABA). This means all RSEQ primitives that have a C part must have a cmp-and- form, but I suppose that was already pretty much the case anyway. I just don't remember seeing that spelled out anywhere. Then again, I've not yet read that manpage. > + /* final store */ > + "movq %[newv], %[v]\n\t" > + "2:\n\t" > + RSEQ_ASM_DEFINE_ABORT(4, __rseq_failure, RSEQ_SIG, "", abort) > + RSEQ_ASM_DEFINE_CMPFAIL(5, __rseq_failure, "", cmpfail) > + : /* gcc asm goto does not allow outputs */ > + : [cpu_id]"r"(cpu), > + [current_cpu_id]"m"(__rseq_abi.cpu_id), > + [rseq_cs]"m"(__rseq_abi.rseq_cs), > + [v]"m"(*v), > + [expect]"r"(expect), > + [newv]"r"(newv) > + : "memory", "cc", "rax" > + : abort, cmpfail > + ); > + return 0; > +abort: > + return -1; > +cmpfail: > + return 1; > +} -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

2
3
0 0

Re: [Linux-kselftest-mirror] [RFC PATCH for 4.15 v3 15/22] rseq: selftests: Provide self-tests

by Peter Zijlstra

On Tue, Nov 21, 2017 at 09:18:53AM -0500, Mathieu Desnoyers wrote: > diff --git a/tools/testing/selftests/rseq/rseq-x86.h b/tools/testing/selftests/rseq/rseq-x86.h > new file mode 100644 > index 000000000000..63e81d6c61fa > --- /dev/null > +++ b/tools/testing/selftests/rseq/rseq-x86.h > @@ -0,0 +1,898 @@ > +/* > + * rseq-x86.h > + * > + * (C) Copyright 2016 - Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> > + * > + * Permission is hereby granted, free of charge, to any person obtaining a copy > + * of this software and associated documentation files (the "Software"), to deal > + * in the Software without restriction, including without limitation the rights > + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell > + * copies of the Software, and to permit persons to whom the Software is > + * furnished to do so, subject to the following conditions: > + * > + * The above copyright notice and this permission notice shall be included in > + * all copies or substantial portions of the Software. > + * > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE > + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER > + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, > + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE > + * SOFTWARE. > + */ > + > +#include <stdint.h> > + > +#define RSEQ_SIG 0x53053053 > + > +#ifdef __x86_64__ > + > +#define rseq_smp_mb() __asm__ __volatile__ ("mfence" : : : "memory") See commit: 450cbdd0125c ("locking/x86: Use LOCK ADD for smp_mb() instead of MFENCE") > +#define rseq_smp_rmb() barrier() > +#define rseq_smp_wmb() barrier() > + > +#define rseq_smp_load_acquire(p) \ > +__extension__ ({ \ > + __typeof(*p) ____p1 = RSEQ_READ_ONCE(*p); \ > + barrier(); \ > + ____p1; \ > +}) > + > +#define rseq_smp_acquire__after_ctrl_dep() rseq_smp_rmb() > + > +#define rseq_smp_store_release(p, v) \ > +do { \ > + barrier(); \ > + RSEQ_WRITE_ONCE(*p, v); \ > +} while (0) > + > +#define RSEQ_ASM_DEFINE_TABLE(label, section, version, flags, \ > + start_ip, post_commit_offset, abort_ip) \ > + ".pushsection " __rseq_str(section) ", \"aw\"\n\t" \ > + ".balign 32\n\t" \ > + __rseq_str(label) ":\n\t" \ > + ".long " __rseq_str(version) ", " __rseq_str(flags) "\n\t" \ > + ".quad " __rseq_str(start_ip) ", " __rseq_str(post_commit_offset) ", " __rseq_str(abort_ip) "\n\t" \ > + ".popsection\n\t" OK, so this creates table entry, but why is @section an argument, AFAICT its _always_ the same thing, no? > +#define RSEQ_ASM_STORE_RSEQ_CS(label, cs_label, rseq_cs) \ > + RSEQ_INJECT_ASM(1) \ > + "leaq " __rseq_str(cs_label) "(%%rip), %%rax\n\t" \ > + "movq %%rax, %[" __rseq_str(rseq_cs) "]\n\t" \ > + __rseq_str(label) ":\n\t" And this sets the TLS variable to point to the table entry from the previous macro, no? But again @rseq_cs seems to always be the very same, why is that an argument? > +#define RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, label) \ > + RSEQ_INJECT_ASM(2) \ > + "cmpl %[" __rseq_str(cpu_id) "], %[" __rseq_str(current_cpu_id) "]\n\t" \ > + "jnz " __rseq_str(label) "\n\t" more things that are always the same it seems.. > +#define RSEQ_ASM_DEFINE_ABORT(label, section, sig, teardown, abort_label) \ > + ".pushsection " __rseq_str(section) ", \"ax\"\n\t" \ > + /* Disassembler-friendly signature: nopl <sig>(%rip). */\ > + ".byte 0x0f, 0x1f, 0x05\n\t" \ > + ".long " __rseq_str(sig) "\n\t" \ > + __rseq_str(label) ":\n\t" \ > + teardown \ > + "jmp %l[" __rseq_str(abort_label) "]\n\t" \ > + ".popsection\n\t" @section and @sig seem to always be the same... > +#define RSEQ_ASM_DEFINE_CMPFAIL(label, section, teardown, cmpfail_label) \ > + ".pushsection " __rseq_str(section) ", \"ax\"\n\t" \ > + __rseq_str(label) ":\n\t" \ > + teardown \ > + "jmp %l[" __rseq_str(cmpfail_label) "]\n\t" \ > + ".popsection\n\t" Somewhat failing to see the point of this macro, it seems to just obfuscate the normal failure path. > +static inline __attribute__((always_inline)) > +int rseq_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, > + int cpu) I find this a very confusing name for what is essentially compare-and-exchange or compare-and-swap, no? > +{ > + __asm__ __volatile__ goto ( > + RSEQ_ASM_DEFINE_TABLE(3, __rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) So we set up the section, but unreadably so... reducing the number of arguments would help a lot. Rename the current one to __RSEQ_ASM_DEFINE_TABLE() and then use: #define RSEQ_ASM_DEFINE_TABLE(label, start_ip, post_commit_ip, abort_ip) \ __RSEQ_ASM_DEFINE_TABLE(label, __rseq_table, 0x0, 0x0, start_ip, \ (post_commit_ip - start_ip), abort_ip) or something, such that we can write: RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */ > + RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs) And here we open start the rseq by storing the table entry pointer into the TLS thingy. > + RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f) > + "cmpq %[v], %[expect]\n\t" > + "jnz 5f\n\t" "jnz %l[cmpfail]\n\t" was too complicated? > + /* final store */ > + "movq %[newv], %[v]\n\t" > + "2:\n\t" > + RSEQ_ASM_DEFINE_ABORT(4, __rseq_failure, RSEQ_SIG, "", abort) > + RSEQ_ASM_DEFINE_CMPFAIL(5, __rseq_failure, "", cmpfail) > + : /* gcc asm goto does not allow outputs */ > + : [cpu_id]"r"(cpu), > + [current_cpu_id]"m"(__rseq_abi.cpu_id), > + [rseq_cs]"m"(__rseq_abi.rseq_cs), > + [v]"m"(*v), > + [expect]"r"(expect), > + [newv]"r"(newv) : [cpu_id] "r" (cpu), [current_cpu_id] "m" (__rseq_abi.cpu_id), [rseq_cs] "m" (__rseq_abi.rseq_cs), [v] "m" (*v), [expect] "r" (expect), [newv] "r" (newv) or something does read much better > + : "memory", "cc", "rax" > + : abort, cmpfail > + ); > + return 0; > +abort: > + return -1; > +cmpfail: > + return 1; > +} > + > +static inline __attribute__((always_inline)) > +int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot, > + off_t voffp, intptr_t *load, int cpu) so this thing does what now? It compares @v to @expectnot, when _not_ matching it will store @voffp into @v and load something..? > +{ > + __asm__ __volatile__ goto ( > + RSEQ_ASM_DEFINE_TABLE(3, __rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) > + RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs) > + RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f) > + "cmpq %[v], %[expectnot]\n\t" > + "jz 5f\n\t" So I would prefer "je" in this context, or rather: je %l[cmpfail] > + "movq %[v], %%rax\n\t" loads @v in A But it could already have changed since the previous load from cmp, no? Would it not make sense to put this load before the cmp and use A instead? > + "movq %%rax, %[load]\n\t" stores A in @load > + "addq %[voffp], %%rax\n\t" adds @off to A > + "movq (%%rax), %%rax\n\t" loads (A) in A > + /* final store */ > + "movq %%rax, %[v]\n\t" stores A in @v So the whole thing loads @v into @load, adds and offset, dereferences and adds that back in @v, provided @v doesn't match @expected.. whee. > + "2:\n\t" > + RSEQ_ASM_DEFINE_ABORT(4, __rseq_failure, RSEQ_SIG, "", abort) > + RSEQ_ASM_DEFINE_CMPFAIL(5, __rseq_failure, "", cmpfail) > + : /* gcc asm goto does not allow outputs */ > + : [cpu_id]"r"(cpu), > + [current_cpu_id]"m"(__rseq_abi.cpu_id), > + [rseq_cs]"m"(__rseq_abi.rseq_cs), > + /* final store input */ > + [v]"m"(*v), > + [expectnot]"r"(expectnot), > + [voffp]"er"(voffp), > + [load]"m"(*load) > + : "memory", "cc", "rax" > + : abort, cmpfail > + ); > + return 0; > +abort: > + return -1; > +cmpfail: > + return 1; > +} > +#elif __i386__ > + > +/* > + * Support older 32-bit architectures that do not implement fence > + * instructions. > + */ > +#define rseq_smp_mb() \ > + __asm__ __volatile__ ("lock; addl $0,0(%%esp)" : : : "memory") > +#define rseq_smp_rmb() \ > + __asm__ __volatile__ ("lock; addl $0,0(%%esp)" : : : "memory") > +#define rseq_smp_wmb() \ > + __asm__ __volatile__ ("lock; addl $0,0(%%esp)" : : : "memory") Oh shiny, you're supporting that OOSTORE and PPRO_FENCE nonsense? Going by commit: 09df7c4c8097 ("x86: Remove CONFIG_X86_OOSTORE") That smp_wmb() one was an 'optimization' (forced store buffer flush) but not a correctness thing. And we dropped that stuff from the kernel a _long_ time ago. Ideally we'd kill that PPRO_FENCE crap too. -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

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Re: [Linux-kselftest-mirror] [RFC PATCH for 4.15 v3 15/22] rseq: selftests: Provide self-tests

by Peter Zijlstra

On Tue, Nov 21, 2017 at 09:18:53AM -0500, Mathieu Desnoyers wrote: > Implements two basic tests of RSEQ functionality, and one more > exhaustive parameterizable test. > > The first, "basic_test" only asserts that RSEQ works moderately > correctly. E.g. that the CPUID pointer works. > > "basic_percpu_ops_test" is a slightly more "realistic" variant, > implementing a few simple per-cpu operations and testing their > correctness. > > "param_test" is a parametrizable restartable sequences test. See > the "--help" output for usage. > > A run_param_test.sh script runs many variants of the parametrizable > tests. > > As part of those tests, a helper library "rseq" implements a user-space > API around restartable sequences. It uses the cpu_opv system call as > fallback when single-stepped by a debugger. It exposes the instruction > pointer addresses where the rseq assembly blocks begin and end, as well > as the associated abort instruction pointer, in the __rseq_table > section. This section allows debuggers may know where to place > breakpoints when single-stepping through assembly blocks which may be > aborted at any point by the kernel. Could I ask you to split this in smaller bits? I'd start with just the rseq library, using only the rseq interface. Then add the whole cpu_opv fallback stuff. Then add the selftests using librseq. As is this is a tad much to read in a single go. -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

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Re: [Linux-kselftest-mirror] [PATCH update for 4.15 3/3] rseq: selftests: Provide self-tests (v4)

by Shuah Khan

On 11/21/2017 03:19 PM, Mathieu Desnoyers wrote: > Implements two basic tests of RSEQ functionality, and one more > exhaustive parameterizable test. > > The first, "basic_test" only asserts that RSEQ works moderately > correctly. E.g. that the CPUID pointer works. > > "basic_percpu_ops_test" is a slightly more "realistic" variant, > implementing a few simple per-cpu operations and testing their > correctness. > > "param_test" is a parametrizable restartable sequences test. See > the "--help" output for usage. > > A run_param_test.sh script runs many variants of the parametrizable > tests. > > As part of those tests, a helper library "rseq" implements a user-space > API around restartable sequences. It uses the cpu_opv system call as > fallback when single-stepped by a debugger. It exposes the instruction > pointer addresses where the rseq assembly blocks begin and end, as well > as the associated abort instruction pointer, in the __rseq_table > section. This section allows debuggers may know where to place > breakpoints when single-stepping through assembly blocks which may be > aborted at any point by the kernel. > > The rseq library expose APIs that present the fast-path operations. > The new from userspace is, e.g. for a counter increment: > > cpu = rseq_cpu_start(); > ret = rseq_addv(&data->c[cpu].count, 1, cpu); > if (likely(!ret)) > return 0; /* Success. */ > do { > cpu = rseq_current_cpu(); > ret = cpu_op_addv(&data->c[cpu].count, 1, cpu); > if (likely(!ret)) > return 0; /* Success. */ > } while (ret > 0 || errno == EAGAIN); > perror("cpu_op_addv"); > return -1; /* Unexpected error. */ > > PowerPC tests have been implemented by Boqun Feng. > > Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> > CC: Russell King <linux(a)arm.linux.org.uk> > CC: Catalin Marinas <catalin.marinas(a)arm.com> > CC: Will Deacon <will.deacon(a)arm.com> > CC: Thomas Gleixner <tglx(a)linutronix.de> > CC: Paul Turner <pjt(a)google.com> > CC: Andrew Hunter <ahh(a)google.com> > CC: Peter Zijlstra <peterz(a)infradead.org> > CC: Andy Lutomirski <luto(a)amacapital.net> > CC: Andi Kleen <andi(a)firstfloor.org> > CC: Dave Watson <davejwatson(a)fb.com> > CC: Chris Lameter <cl(a)linux.com> > CC: Ingo Molnar <mingo(a)redhat.com> > CC: "H. Peter Anvin" <hpa(a)zytor.com> > CC: Ben Maurer <bmaurer(a)fb.com> > CC: Steven Rostedt <rostedt(a)goodmis.org> > CC: "Paul E. McKenney" <paulmck(a)linux.vnet.ibm.com> > CC: Josh Triplett <josh(a)joshtriplett.org> > CC: Linus Torvalds <torvalds(a)linux-foundation.org> > CC: Andrew Morton <akpm(a)linux-foundation.org> > CC: Boqun Feng <boqun.feng(a)gmail.com> > CC: Shuah Khan <shuah(a)kernel.org> > CC: linux-kselftest(a)vger.kernel.org > CC: linux-api(a)vger.kernel.org > --- > Changes since v1: > - Provide abort-ip signature: The abort-ip signature is located just > before the abort-ip target. It is currently hardcoded, but a > user-space application could use the __rseq_table to iterate on all > abort-ip targets and use a random value as signature if needed in the > future. > - Add rseq_prepare_unload(): Libraries and JIT code using rseq critical > sections need to issue rseq_prepare_unload() on each thread at least > once before reclaim of struct rseq_cs. > - Use initial-exec TLS model, non-weak symbol: The initial-exec model is > signal-safe, whereas the global-dynamic model is not. Remove the > "weak" symbol attribute from the __rseq_abi in rseq.c. The rseq.so > library will have ownership of that symbol, and there is not reason for > an application or user library to try to define that symbol. > The expected use is to link against libreq.so, which owns and provide > that symbol. > - Set cpu_id to -2 on register error > - Add rseq_len syscall parameter, rseq_cs version > - Ensure disassember-friendly signature: x86 32/64 disassembler have a > hard time decoding the instruction stream after a bad instruction. Use > a nopl instruction to encode the signature. Suggested by Andy Lutomirski. > - Exercise parametrized tests variants in a shell scripts. > - Restartable sequences selftests: Remove use of event counter. > - Use cpu_id_start field: With the cpu_id_start field, the C > preparation phase of the fast-path does not need to compare cpu_id < 0 > anymore. > - Signal-safe registration and refcounting: Allow libraries using > librseq.so to register it from signal handlers. > - Use OVERRIDE_TARGETS in makefile. > - Use "m" constraints for rseq_cs field. > > Changes since v2: > - Update based on Thomas Gleixner's comments. > > Changes since v3: > - Generate param_test_skip_fastpath and param_test_benchmark with > -DSKIP_FASTPATH and -DBENCHMARK (respectively). Add param_test_fastpath > to run_param_test.sh. > --- > MAINTAINERS | 1 + > tools/testing/selftests/Makefile | 1 + > tools/testing/selftests/rseq/.gitignore | 4 + > tools/testing/selftests/rseq/Makefile | 33 + > .../testing/selftests/rseq/basic_percpu_ops_test.c | 333 +++++ > tools/testing/selftests/rseq/basic_test.c | 55 + > tools/testing/selftests/rseq/param_test.c | 1285 ++++++++++++++++++++ > tools/testing/selftests/rseq/rseq-arm.h | 535 ++++++++ > tools/testing/selftests/rseq/rseq-ppc.h | 567 +++++++++ > tools/testing/selftests/rseq/rseq-x86.h | 898 ++++++++++++++ > tools/testing/selftests/rseq/rseq.c | 116 ++ > tools/testing/selftests/rseq/rseq.h | 154 +++ > tools/testing/selftests/rseq/run_param_test.sh | 126 ++ > 13 files changed, 4108 insertions(+) > create mode 100644 tools/testing/selftests/rseq/.gitignore > create mode 100644 tools/testing/selftests/rseq/Makefile > create mode 100644 tools/testing/selftests/rseq/basic_percpu_ops_test.c > create mode 100644 tools/testing/selftests/rseq/basic_test.c > create mode 100644 tools/testing/selftests/rseq/param_test.c > create mode 100644 tools/testing/selftests/rseq/rseq-arm.h > create mode 100644 tools/testing/selftests/rseq/rseq-ppc.h > create mode 100644 tools/testing/selftests/rseq/rseq-x86.h > create mode 100644 tools/testing/selftests/rseq/rseq.c > create mode 100644 tools/testing/selftests/rseq/rseq.h > create mode 100755 tools/testing/selftests/rseq/run_param_test.sh > Looks good. Acked-by: Shuah Khan <shuahkh(a)osg.samsung.com> thanks, -- Shuah -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

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[Linux-kselftest-mirror] [PATCH update for 4.15 1/3] selftests: lib.mk: Introduce OVERRIDE_TARGETS

by Mathieu Desnoyers

Introduce OVERRIDE_TARGETS to allow tests to express dependencies on header files and .so, which require to override the selftests lib.mk targets. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> CC: Russell King <linux(a)arm.linux.org.uk> CC: Catalin Marinas <catalin.marinas(a)arm.com> CC: Will Deacon <will.deacon(a)arm.com> CC: Thomas Gleixner <tglx(a)linutronix.de> CC: Paul Turner <pjt(a)google.com> CC: Andrew Hunter <ahh(a)google.com> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Andy Lutomirski <luto(a)amacapital.net> CC: Andi Kleen <andi(a)firstfloor.org> CC: Dave Watson <davejwatson(a)fb.com> CC: Chris Lameter <cl(a)linux.com> CC: Ingo Molnar <mingo(a)redhat.com> CC: "H. Peter Anvin" <hpa(a)zytor.com> CC: Ben Maurer <bmaurer(a)fb.com> CC: Steven Rostedt <rostedt(a)goodmis.org> CC: "Paul E. McKenney" <paulmck(a)linux.vnet.ibm.com> CC: Josh Triplett <josh(a)joshtriplett.org> CC: Linus Torvalds <torvalds(a)linux-foundation.org> CC: Andrew Morton <akpm(a)linux-foundation.org> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Shuah Khan <shuah(a)kernel.org> CC: linux-kselftest(a)vger.kernel.org CC: linux-api(a)vger.kernel.org --- tools/testing/selftests/lib.mk | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk index 5bef05d6ba39..441d7bc63bb7 100644 --- a/tools/testing/selftests/lib.mk +++ b/tools/testing/selftests/lib.mk @@ -105,6 +105,9 @@ COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) endif +# Selftest makefiles can override those targets by setting +# OVERRIDE_TARGETS = 1. +ifeq ($(OVERRIDE_TARGETS),) $(OUTPUT)/%:%.c $(LINK.c) $^ $(LDLIBS) -o $@ @@ -113,5 +116,6 @@ $(OUTPUT)/%.o:%.S $(OUTPUT)/%:%.S $(LINK.S) $^ $(LDLIBS) -o $@ +endif .PHONY: run_tests all clean install emit_tests -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

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Re: [Linux-kselftest-mirror] [RFC PATCH for 4.15 v3 15/22] rseq: selftests: Provide self-tests

by Mathieu Desnoyers

----- On Nov 21, 2017, at 10:34 AM, shuah shuah(a)kernel.org wrote: [...] >> --- >> MAINTAINERS | 1 + >> tools/testing/selftests/Makefile | 1 + >> tools/testing/selftests/rseq/.gitignore | 4 + > > Thanks for the .gitignore files. It is commonly missed change, I end > up adding one to clean things up after tests get in. I'm used to receive patches where contributors forget to add new files to gitignore within my own projects, which may contribute to my awareness of this pain point. :) [...] >> + >> +void *test_percpu_inc_thread(void *arg) >> +{ >> + struct inc_thread_test_data *thread_data = arg; >> + struct inc_test_data *data = thread_data->data; >> + long long i, reps; >> + >> + if (!opt_disable_rseq && thread_data->reg >> + && rseq_register_current_thread()) >> + abort(); >> + reps = thread_data->reps; >> + for (i = 0; i < reps; i++) { >> + int cpu, ret; >> + >> +#ifndef SKIP_FASTPATH >> + /* Try fast path. */ >> + cpu = rseq_cpu_start(); >> + ret = rseq_addv(&data->c[cpu].count, 1, cpu); >> + if (likely(!ret)) >> + goto next; >> +#endif > > So the test needs to compiled with this enabled? I think it would be better > to make this an argument to be abel to select at test start time as opposed > to making this compile time option. Remember that these tests get run in > automated test rings. Making this a compile time otpion pertty much ensures > that this path will not be tested. > > So I would reccommend adding a paratemer. > >> + slowpath: >> + __attribute__((unused)); >> + for (;;) { >> + /* Fallback on cpu_opv system call. */ >> + cpu = rseq_current_cpu(); >> + ret = cpu_op_addv(&data->c[cpu].count, 1, cpu); >> + if (likely(!ret)) >> + break; >> + assert(ret >= 0 || errno == EAGAIN); >> + } >> + next: >> + __attribute__((unused)); >> +#ifndef BENCHMARK >> + if (i != 0 && !(i % (reps / 10))) >> + printf_verbose("tid %d: count %lld\n", (int) gettid(), i); >> +#endif > > Same comment as before. Avoid compile time options. The goal of those compiler define are to generate the altered code without adding branches into the fast-paths. Here is an alternative solution that should take care of your concern: I'll build multiple targets for param_test.c: param_test param_test_skip_fastpath (built with -DSKIP_FASTPATH) param_test_benchmark (build with -DBENCHMARK) I'll update run_param_test.sh to run both param_test and param_test_skip_fastpath. Note that "param_test_benchmark" is only useful for benchmarking, so I don't plan to run it from run_param_test.sh which is meant to track regressions. Is that approach OK with you ? Thanks, Mathieu -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

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[Linux-kselftest-mirror] [PATCH] selftests: posix_timers: Make signal handling safer

by SF Markus Elfring

From: Markus Elfring <elfring(a)users.sourceforge.net> Date: Tue, 21 Nov 2017 20:56:51 +0100 Use the data type "sig_atomic_t" for the variable "done" so that it can be safely modified by a signal handler. Fixes: 0bc4b0cf15708fca04095232c4e448634e94d029 ("selftests: add basic posix timers selftests") Signed-off-by: Markus Elfring <elfring(a)users.sourceforge.net> --- tools/testing/selftests/timers/posix_timers.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/timers/posix_timers.c b/tools/testing/selftests/timers/posix_timers.c index 15cf56d32155..d64732c8b69a 100644 --- a/tools/testing/selftests/timers/posix_timers.c +++ b/tools/testing/selftests/timers/posix_timers.c @@ -20,7 +20,7 @@ #define DELAY 2 #define USECS_PER_SEC 1000000 -static volatile int done; +static sig_atomic_t done; /* Busy loop in userspace to elapse ITIMER_VIRTUAL */ static void user_loop(void) -- 2.15.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

1
0
0 0

[Linux-kselftest-mirror] selftests: Completion of error handling

by SF Markus Elfring

Hello, Static source code analysis points out that the checking of return values from some function calls is incomplete also in this software area. How would you like to fix remaining open issues there? Regards, Markus -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

2
2
0 0

[Linux-kselftest-mirror] [PATCH] selftest: sync: Use common error handling code in sync_file_info()

by SF Markus Elfring

From: Markus Elfring <elfring(a)users.sourceforge.net> Date: Mon, 20 Nov 2017 22:20:37 +0100 Add a jump target so that a bit of exception handling can be better reused at the end of this function. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring(a)users.sourceforge.net> --- tools/testing/selftests/sync/sync.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) diff --git a/tools/testing/selftests/sync/sync.c b/tools/testing/selftests/sync/sync.c index f3d599f249b9..d0d55377f6f8 100644 --- a/tools/testing/selftests/sync/sync.c +++ b/tools/testing/selftests/sync/sync.c @@ -92,10 +92,8 @@ static struct sync_file_info *sync_file_info(int fd) return NULL; err = ioctl(fd, SYNC_IOC_FILE_INFO, info); - if (err < 0) { - free(info); - return NULL; - } + if (err < 0) + goto free_info; num_fences = info->num_fences; @@ -104,22 +102,23 @@ static struct sync_file_info *sync_file_info(int fd) info->num_fences = num_fences; fence_info = calloc(num_fences, sizeof(*fence_info)); - if (!fence_info) { - free(info); - return NULL; - } + if (!fence_info) + goto free_info; info->sync_fence_info = (uint64_t)fence_info; err = ioctl(fd, SYNC_IOC_FILE_INFO, info); if (err < 0) { free(fence_info); - free(info); - return NULL; + goto free_info; } } return info; + +free_info: + free(info); + return NULL; } static void sync_file_info_free(struct sync_file_info *info) -- 2.15.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

2
2
0 0

[Linux-kselftest-mirror] [PATCH] selftests: posix_timers: Use common error handling code in two functions

by SF Markus Elfring

From: Markus Elfring <elfring(a)users.sourceforge.net> Date: Tue, 21 Nov 2017 10:50:32 +0100 Add jump targets so that a bit of exception handling can be better reused at the end of these functions. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring(a)users.sourceforge.net> --- tools/testing/selftests/timers/posix_timers.c | 32 +++++++++++++-------------- 1 file changed, 16 insertions(+), 16 deletions(-) diff --git a/tools/testing/selftests/timers/posix_timers.c b/tools/testing/selftests/timers/posix_timers.c index 15cf56d32155..5c9fbb06194f 100644 --- a/tools/testing/selftests/timers/posix_timers.c +++ b/tools/testing/selftests/timers/posix_timers.c @@ -104,10 +104,8 @@ static int check_itimer(int which) signal(SIGALRM, sig_handler); err = gettimeofday(&start, NULL); - if (err < 0) { - perror("Can't call gettimeofday()\n"); - return -1; - } + if (err < 0) + goto report_failure; err = setitimer(which, &val, NULL); if (err < 0) { @@ -123,10 +121,8 @@ static int check_itimer(int which) idle_loop(); err = gettimeofday(&end, NULL); - if (err < 0) { - perror("Can't call gettimeofday()\n"); - return -1; - } + if (err < 0) + goto report_failure; if (!check_diff(start, end)) printf("[OK]\n"); @@ -134,6 +130,10 @@ static int check_itimer(int which) printf("[FAIL]\n"); return 0; + +report_failure: + perror("Can't call gettimeofday()\n"); + return -1; } static int check_timer_create(int which) @@ -162,10 +162,8 @@ static int check_timer_create(int which) signal(SIGALRM, sig_handler); err = gettimeofday(&start, NULL); - if (err < 0) { - perror("Can't call gettimeofday()\n"); - return -1; - } + if (err < 0) + goto report_failure; err = timer_settime(id, 0, &val, NULL); if (err < 0) { @@ -176,10 +174,8 @@ static int check_timer_create(int which) user_loop(); err = gettimeofday(&end, NULL); - if (err < 0) { - perror("Can't call gettimeofday()\n"); - return -1; - } + if (err < 0) + goto report_failure; if (!check_diff(start, end)) printf("[OK]\n"); @@ -187,6 +183,10 @@ static int check_timer_create(int which) printf("[FAIL]\n"); return 0; + +report_failure: + perror("Can't call gettimeofday()\n"); + return -1; } int main(int argc, char **argv) -- 2.15.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

2
2
0 0

[Linux-kselftest-mirror] [RFC PATCH for 4.15 v3 14/22] cpu_opv: selftests: Implement selftests

by Mathieu Desnoyers

Implement cpu_opv selftests. It needs to express dependencies on header files and .so, which require to override the selftests lib.mk targets. Introduce a new OVERRIDE_TARGETS define for this. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> CC: Russell King <linux(a)arm.linux.org.uk> CC: Catalin Marinas <catalin.marinas(a)arm.com> CC: Will Deacon <will.deacon(a)arm.com> CC: Thomas Gleixner <tglx(a)linutronix.de> CC: Paul Turner <pjt(a)google.com> CC: Andrew Hunter <ahh(a)google.com> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Andy Lutomirski <luto(a)amacapital.net> CC: Andi Kleen <andi(a)firstfloor.org> CC: Dave Watson <davejwatson(a)fb.com> CC: Chris Lameter <cl(a)linux.com> CC: Ingo Molnar <mingo(a)redhat.com> CC: "H. Peter Anvin" <hpa(a)zytor.com> CC: Ben Maurer <bmaurer(a)fb.com> CC: Steven Rostedt <rostedt(a)goodmis.org> CC: "Paul E. McKenney" <paulmck(a)linux.vnet.ibm.com> CC: Josh Triplett <josh(a)joshtriplett.org> CC: Linus Torvalds <torvalds(a)linux-foundation.org> CC: Andrew Morton <akpm(a)linux-foundation.org> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Shuah Khan <shuah(a)kernel.org> CC: linux-kselftest(a)vger.kernel.org CC: linux-api(a)vger.kernel.org --- Changes since v1: - Expose similar library API as rseq: Expose library API closely matching the rseq APIs, following removal of the event counter from the rseq kernel API. - Update makefile to fix make run_tests dependency on "all". - Introduce a OVERRIDE_TARGETS. Changes since v2: - Test page faults. --- MAINTAINERS | 1 + tools/testing/selftests/Makefile | 1 + tools/testing/selftests/cpu-opv/.gitignore | 1 + tools/testing/selftests/cpu-opv/Makefile | 17 + .../testing/selftests/cpu-opv/basic_cpu_opv_test.c | 1189 ++++++++++++++++++++ tools/testing/selftests/cpu-opv/cpu-op.c | 348 ++++++ tools/testing/selftests/cpu-opv/cpu-op.h | 68 ++ tools/testing/selftests/lib.mk | 4 + 8 files changed, 1629 insertions(+) create mode 100644 tools/testing/selftests/cpu-opv/.gitignore create mode 100644 tools/testing/selftests/cpu-opv/Makefile create mode 100644 tools/testing/selftests/cpu-opv/basic_cpu_opv_test.c create mode 100644 tools/testing/selftests/cpu-opv/cpu-op.c create mode 100644 tools/testing/selftests/cpu-opv/cpu-op.h diff --git a/MAINTAINERS b/MAINTAINERS index 0b4e504f5003..c6c2436d15f8 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3734,6 +3734,7 @@ L: linux-kernel(a)vger.kernel.org S: Supported F: kernel/cpu_opv.c F: include/uapi/linux/cpu_opv.h +F: tools/testing/selftests/cpu-opv/ CRAMFS FILESYSTEM M: Nicolas Pitre <nico(a)linaro.org> diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index eaf599dc2137..fc1eba0e0130 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -5,6 +5,7 @@ TARGETS += breakpoints TARGETS += capabilities TARGETS += cpufreq TARGETS += cpu-hotplug +TARGETS += cpu-opv TARGETS += efivarfs TARGETS += exec TARGETS += firmware diff --git a/tools/testing/selftests/cpu-opv/.gitignore b/tools/testing/selftests/cpu-opv/.gitignore new file mode 100644 index 000000000000..c7186eb95cf5 --- /dev/null +++ b/tools/testing/selftests/cpu-opv/.gitignore @@ -0,0 +1 @@ +basic_cpu_opv_test diff --git a/tools/testing/selftests/cpu-opv/Makefile b/tools/testing/selftests/cpu-opv/Makefile new file mode 100644 index 000000000000..21e63545d521 --- /dev/null +++ b/tools/testing/selftests/cpu-opv/Makefile @@ -0,0 +1,17 @@ +CFLAGS += -O2 -Wall -g -I./ -I../../../../usr/include/ -L./ -Wl,-rpath=./ + +# Own dependencies because we only want to build against 1st prerequisite, but +# still track changes to header files and depend on shared object. +OVERRIDE_TARGETS = 1 + +TEST_GEN_PROGS = basic_cpu_opv_test + +TEST_GEN_PROGS_EXTENDED = libcpu-op.so + +include ../lib.mk + +$(OUTPUT)/libcpu-op.so: cpu-op.c cpu-op.h + $(CC) $(CFLAGS) -shared -fPIC $< -o $@ + +$(OUTPUT)/%: %.c $(TEST_GEN_PROGS_EXTENDED) cpu-op.h + $(CC) $(CFLAGS) $< -lcpu-op -o $@ diff --git a/tools/testing/selftests/cpu-opv/basic_cpu_opv_test.c b/tools/testing/selftests/cpu-opv/basic_cpu_opv_test.c new file mode 100644 index 000000000000..a31a10bbd8aa --- /dev/null +++ b/tools/testing/selftests/cpu-opv/basic_cpu_opv_test.c @@ -0,0 +1,1189 @@ +/* + * Basic test coverage for cpu_opv system call. + */ + +#define _GNU_SOURCE +#include <assert.h> +#include <sched.h> +#include <signal.h> +#include <stdio.h> +#include <string.h> +#include <sys/time.h> +#include <errno.h> +#include <stdlib.h> + +#include "cpu-op.h" + +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) + +#define TESTBUFLEN 4096 +#define TESTBUFLEN_CMP 16 + +#define TESTBUFLEN_PAGE_MAX 65536 + +#define NR_PF_ARRAY 16384 +#define PF_ARRAY_LEN 4096 + +/* 64 MB arrays for page fault testing. */ +char pf_array_dst[NR_PF_ARRAY][PF_ARRAY_LEN]; +char pf_array_src[NR_PF_ARRAY][PF_ARRAY_LEN]; + +static int test_compare_eq_op(char *a, char *b, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, a), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, b), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_compare_eq_same(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_compare_eq same"; + + printf("Testing %s\n", test_name); + + /* Test compare_eq */ + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + for (i = 0; i < TESTBUFLEN; i++) + buf2[i] = (char)i; + ret = test_compare_eq_op(buf2, buf1, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret > 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 0); + return -1; + } + return 0; +} + +static int test_compare_eq_diff(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_compare_eq different"; + + printf("Testing %s\n", test_name); + + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN); + ret = test_compare_eq_op(buf2, buf1, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret == 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 1); + return -1; + } + return 0; +} + +static int test_compare_ne_op(char *a, char *b, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_NE_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, a), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, b), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_compare_ne_same(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_compare_ne same"; + + printf("Testing %s\n", test_name); + + /* Test compare_ne */ + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + for (i = 0; i < TESTBUFLEN; i++) + buf2[i] = (char)i; + ret = test_compare_ne_op(buf2, buf1, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret == 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 1); + return -1; + } + return 0; +} + +static int test_compare_ne_diff(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_compare_ne different"; + + printf("Testing %s\n", test_name); + + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN); + ret = test_compare_ne_op(buf2, buf1, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 0); + return -1; + } + return 0; +} + +static int test_2compare_eq_op(char *a, char *b, char *c, char *d, + size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, a), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, b), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, c), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, d), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_2compare_eq_index(void) +{ + int i, ret; + char buf1[TESTBUFLEN_CMP]; + char buf2[TESTBUFLEN_CMP]; + char buf3[TESTBUFLEN_CMP]; + char buf4[TESTBUFLEN_CMP]; + const char *test_name = "test_2compare_eq index"; + + printf("Testing %s\n", test_name); + + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN_CMP); + memset(buf3, 0, TESTBUFLEN_CMP); + memset(buf4, 0, TESTBUFLEN_CMP); + + /* First compare failure is op[0], expect 1. */ + ret = test_2compare_eq_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 1) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 1); + return -1; + } + + /* All compares succeed. */ + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf2[i] = (char)i; + ret = test_2compare_eq_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 0); + return -1; + } + + /* First compare failure is op[1], expect 2. */ + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf3[i] = (char)i; + ret = test_2compare_eq_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 2) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 2); + return -1; + } + + return 0; +} + +static int test_2compare_ne_op(char *a, char *b, char *c, char *d, + size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_NE_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, a), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, b), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_COMPARE_NE_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, c), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, d), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_2compare_ne_index(void) +{ + int i, ret; + char buf1[TESTBUFLEN_CMP]; + char buf2[TESTBUFLEN_CMP]; + char buf3[TESTBUFLEN_CMP]; + char buf4[TESTBUFLEN_CMP]; + const char *test_name = "test_2compare_ne index"; + + printf("Testing %s\n", test_name); + + memset(buf1, 0, TESTBUFLEN_CMP); + memset(buf2, 0, TESTBUFLEN_CMP); + memset(buf3, 0, TESTBUFLEN_CMP); + memset(buf4, 0, TESTBUFLEN_CMP); + + /* First compare ne failure is op[0], expect 1. */ + ret = test_2compare_ne_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 1) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 1); + return -1; + } + + /* All compare ne succeed. */ + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf1[i] = (char)i; + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf3[i] = (char)i; + ret = test_2compare_ne_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 0); + return -1; + } + + /* First compare failure is op[1], expect 2. */ + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf4[i] = (char)i; + ret = test_2compare_ne_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 2) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 2); + return -1; + } + + return 0; +} + +static int test_memcpy_op(void *dst, void *src, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_MEMCPY_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src), + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_memcpy(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_memcpy"; + + printf("Testing %s\n", test_name); + + /* Test memcpy */ + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN); + ret = test_memcpy_op(buf2, buf1, TESTBUFLEN); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + for (i = 0; i < TESTBUFLEN; i++) { + if (buf2[i] != (char)i) { + printf("%s failed. Expecting '%d', found '%d' at offset %d\n", + test_name, (char)i, buf2[i], i); + return -1; + } + } + return 0; +} + +static int test_memcpy_u32(void) +{ + int ret; + uint32_t v1, v2; + const char *test_name = "test_memcpy_u32"; + + printf("Testing %s\n", test_name); + + /* Test memcpy_u32 */ + v1 = 42; + v2 = 0; + ret = test_memcpy_op(&v2, &v1, sizeof(v1)); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (v1 != v2) { + printf("%s failed. Expecting '%d', found '%d'\n", + test_name, v1, v2); + return -1; + } + return 0; +} + +static int test_memcpy_mb_memcpy_op(void *dst1, void *src1, + void *dst2, void *src2, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_MEMCPY_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst1), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src1), + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [1] = { + .op = CPU_MB_OP, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst2), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src2), + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_memcpy_mb_memcpy(void) +{ + int ret; + int v1, v2, v3; + const char *test_name = "test_memcpy_mb_memcpy"; + + printf("Testing %s\n", test_name); + + /* Test memcpy */ + v1 = 42; + v2 = v3 = 0; + ret = test_memcpy_mb_memcpy_op(&v2, &v1, &v3, &v2, sizeof(int)); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (v3 != v1) { + printf("%s failed. Expecting '%d', found '%d'\n", + test_name, v1, v3); + return -1; + } + return 0; +} + +static int test_add_op(int *v, int64_t increment) +{ + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_op_add(v, increment, sizeof(*v), cpu); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_add(void) +{ + int orig_v = 42, v, ret; + int increment = 1; + const char *test_name = "test_add"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_add_op(&v, increment); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != orig_v + increment) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v); + return -1; + } + return 0; +} + +static int test_two_add_op(int *v, int64_t *increments) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_ADD_OP, + .len = sizeof(*v), + LINUX_FIELD_u32_u64_INIT_ONSTACK( + .u.arithmetic_op.p, v), + .u.arithmetic_op.count = increments[0], + .u.arithmetic_op.expect_fault_p = 0, + }, + [1] = { + .op = CPU_ADD_OP, + .len = sizeof(*v), + LINUX_FIELD_u32_u64_INIT_ONSTACK( + .u.arithmetic_op.p, v), + .u.arithmetic_op.count = increments[1], + .u.arithmetic_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_two_add(void) +{ + int orig_v = 42, v, ret; + int64_t increments[2] = { 99, 123 }; + const char *test_name = "test_two_add"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_two_add_op(&v, increments); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != orig_v + increments[0] + increments[1]) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v); + return -1; + } + return 0; +} + +static int test_or_op(int *v, uint64_t mask) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_OR_OP, + .len = sizeof(*v), + LINUX_FIELD_u32_u64_INIT_ONSTACK( + .u.bitwise_op.p, v), + .u.bitwise_op.mask = mask, + .u.bitwise_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_or(void) +{ + int orig_v = 0xFF00000, v, ret; + uint32_t mask = 0xFFF; + const char *test_name = "test_or"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_or_op(&v, mask); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v | mask)) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v | mask); + return -1; + } + return 0; +} + +static int test_and_op(int *v, uint64_t mask) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_AND_OP, + .len = sizeof(*v), + LINUX_FIELD_u32_u64_INIT_ONSTACK( + .u.bitwise_op.p, v), + .u.bitwise_op.mask = mask, + .u.bitwise_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_and(void) +{ + int orig_v = 0xF00, v, ret; + uint32_t mask = 0xFFF; + const char *test_name = "test_and"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_and_op(&v, mask); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v & mask)) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v & mask); + return -1; + } + return 0; +} + +static int test_xor_op(int *v, uint64_t mask) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_XOR_OP, + .len = sizeof(*v), + LINUX_FIELD_u32_u64_INIT_ONSTACK( + .u.bitwise_op.p, v), + .u.bitwise_op.mask = mask, + .u.bitwise_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_xor(void) +{ + int orig_v = 0xF00, v, ret; + uint32_t mask = 0xFFF; + const char *test_name = "test_xor"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_xor_op(&v, mask); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v ^ mask)) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v ^ mask); + return -1; + } + return 0; +} + +static int test_lshift_op(int *v, uint32_t bits) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_LSHIFT_OP, + .len = sizeof(*v), + LINUX_FIELD_u32_u64_INIT_ONSTACK( + .u.shift_op.p, v), + .u.shift_op.bits = bits, + .u.shift_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_lshift(void) +{ + int orig_v = 0xF00, v, ret; + uint32_t bits = 5; + const char *test_name = "test_lshift"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_lshift_op(&v, bits); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v << bits)) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v << bits); + return -1; + } + return 0; +} + +static int test_rshift_op(int *v, uint32_t bits) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_RSHIFT_OP, + .len = sizeof(*v), + LINUX_FIELD_u32_u64_INIT_ONSTACK( + .u.shift_op.p, v), + .u.shift_op.bits = bits, + .u.shift_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_rshift(void) +{ + int orig_v = 0xF00, v, ret; + uint32_t bits = 5; + const char *test_name = "test_rshift"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_rshift_op(&v, bits); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v >> bits)) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v >> bits); + return -1; + } + return 0; +} + +static int test_cmpxchg_op(void *v, void *expect, void *old, void *n, + size_t len) +{ + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_op_cmpxchg(v, expect, old, n, len, cpu); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + + +static int test_cmpxchg_success(void) +{ + int ret; + uint64_t orig_v = 1, v, expect = 1, old = 0, n = 3; + const char *test_name = "test_cmpxchg success"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_cmpxchg_op(&v, &expect, &old, &n, sizeof(uint64_t)); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 0); + return -1; + } + if (v != n) { + printf("%s v is %lld, expecting %lld\n", + test_name, (long long)v, (long long)n); + return -1; + } + if (old != orig_v) { + printf("%s old is %lld, expecting %lld\n", + test_name, (long long)old, (long long)orig_v); + return -1; + } + return 0; +} + +static int test_cmpxchg_fail(void) +{ + int ret; + uint64_t orig_v = 1, v, expect = 123, old = 0, n = 3; + const char *test_name = "test_cmpxchg fail"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_cmpxchg_op(&v, &expect, &old, &n, sizeof(uint64_t)); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret == 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 1); + return -1; + } + if (v == n) { + printf("%s v is %lld, expecting %lld\n", + test_name, (long long)v, (long long)orig_v); + return -1; + } + if (old != orig_v) { + printf("%s old is %lld, expecting %lld\n", + test_name, (long long)old, (long long)orig_v); + return -1; + } + return 0; +} + +static int test_memcpy_expect_fault_op(void *dst, void *src, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_MEMCPY_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src), + .u.memcpy_op.expect_fault_dst = 0, + /* Return EAGAIN on fault. */ + .u.memcpy_op.expect_fault_src = 1, + }, + }; + int cpu; + + cpu = cpu_op_get_current_cpu(); + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +static int test_memcpy_fault(void) +{ + int ret; + char buf1[TESTBUFLEN]; + const char *test_name = "test_memcpy_fault"; + + printf("Testing %s\n", test_name); + + /* Test memcpy */ + ret = test_memcpy_op(buf1, NULL, TESTBUFLEN); + if (!ret || (ret < 0 && errno != EFAULT)) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + /* Test memcpy expect fault */ + ret = test_memcpy_expect_fault_op(buf1, NULL, TESTBUFLEN); + if (!ret || (ret < 0 && errno != EAGAIN)) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + return 0; +} + +static int do_test_unknown_op(void) +{ + struct cpu_op opvec[] = { + [0] = { + .op = -1, /* Unknown */ + .len = 0, + }, + }; + int cpu; + + cpu = cpu_op_get_current_cpu(); + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +static int test_unknown_op(void) +{ + int ret; + const char *test_name = "test_unknown_op"; + + printf("Testing %s\n", test_name); + + ret = do_test_unknown_op(); + if (!ret || (ret < 0 && errno != EINVAL)) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + return 0; +} + +static int do_test_max_ops(void) +{ + struct cpu_op opvec[] = { + [0] = { .op = CPU_MB_OP, }, + [1] = { .op = CPU_MB_OP, }, + [2] = { .op = CPU_MB_OP, }, + [3] = { .op = CPU_MB_OP, }, + [4] = { .op = CPU_MB_OP, }, + [5] = { .op = CPU_MB_OP, }, + [6] = { .op = CPU_MB_OP, }, + [7] = { .op = CPU_MB_OP, }, + [8] = { .op = CPU_MB_OP, }, + [9] = { .op = CPU_MB_OP, }, + [10] = { .op = CPU_MB_OP, }, + [11] = { .op = CPU_MB_OP, }, + [12] = { .op = CPU_MB_OP, }, + [13] = { .op = CPU_MB_OP, }, + [14] = { .op = CPU_MB_OP, }, + [15] = { .op = CPU_MB_OP, }, + }; + int cpu; + + cpu = cpu_op_get_current_cpu(); + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +static int test_max_ops(void) +{ + int ret; + const char *test_name = "test_max_ops"; + + printf("Testing %s\n", test_name); + + ret = do_test_max_ops(); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + return 0; +} + +static int do_test_too_many_ops(void) +{ + struct cpu_op opvec[] = { + [0] = { .op = CPU_MB_OP, }, + [1] = { .op = CPU_MB_OP, }, + [2] = { .op = CPU_MB_OP, }, + [3] = { .op = CPU_MB_OP, }, + [4] = { .op = CPU_MB_OP, }, + [5] = { .op = CPU_MB_OP, }, + [6] = { .op = CPU_MB_OP, }, + [7] = { .op = CPU_MB_OP, }, + [8] = { .op = CPU_MB_OP, }, + [9] = { .op = CPU_MB_OP, }, + [10] = { .op = CPU_MB_OP, }, + [11] = { .op = CPU_MB_OP, }, + [12] = { .op = CPU_MB_OP, }, + [13] = { .op = CPU_MB_OP, }, + [14] = { .op = CPU_MB_OP, }, + [15] = { .op = CPU_MB_OP, }, + [16] = { .op = CPU_MB_OP, }, + }; + int cpu; + + cpu = cpu_op_get_current_cpu(); + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +static int test_too_many_ops(void) +{ + int ret; + const char *test_name = "test_too_many_ops"; + + printf("Testing %s\n", test_name); + + ret = do_test_too_many_ops(); + if (!ret || (ret < 0 && errno != EINVAL)) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + return 0; +} + +/* Use 64kB len, largest page size known on Linux. */ +static int test_memcpy_single_too_large(void) +{ + int i, ret; + char buf1[TESTBUFLEN_PAGE_MAX + 1]; + char buf2[TESTBUFLEN_PAGE_MAX + 1]; + const char *test_name = "test_memcpy_single_too_large"; + + printf("Testing %s\n", test_name); + + /* Test memcpy */ + for (i = 0; i < TESTBUFLEN_PAGE_MAX + 1; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN_PAGE_MAX + 1); + ret = test_memcpy_op(buf2, buf1, TESTBUFLEN_PAGE_MAX + 1); + if (!ret || (ret < 0 && errno != EINVAL)) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + return 0; +} + +static int test_memcpy_single_ok_sum_too_large_op(void *dst, void *src, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_MEMCPY_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src), + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = len, + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst), + LINUX_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src), + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_memcpy_single_ok_sum_too_large(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_memcpy_single_ok_sum_too_large"; + + printf("Testing %s\n", test_name); + + /* Test memcpy */ + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN); + ret = test_memcpy_single_ok_sum_too_large_op(buf2, buf1, TESTBUFLEN); + if (!ret || (ret < 0 && errno != EINVAL)) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + return 0; +} + +/* + * Iterate over large uninitialized arrays to trigger page faults. + */ +int test_page_fault(void) +{ + int ret = 0; + uint64_t i; + const char *test_name = "test_page_fault"; + + printf("Testing %s\n", test_name); + + for (i = 0; i < NR_PF_ARRAY; i++) { + ret = test_memcpy_op(pf_array_dst[i], + pf_array_src[i], + PF_ARRAY_LEN); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return ret; + } + } + return 0; +} + +int main(int argc, char **argv) +{ + int ret = 0; + + ret |= test_compare_eq_same(); + ret |= test_compare_eq_diff(); + ret |= test_compare_ne_same(); + ret |= test_compare_ne_diff(); + ret |= test_2compare_eq_index(); + ret |= test_2compare_ne_index(); + ret |= test_memcpy(); + ret |= test_memcpy_u32(); + ret |= test_memcpy_mb_memcpy(); + ret |= test_add(); + ret |= test_two_add(); + ret |= test_or(); + ret |= test_and(); + ret |= test_xor(); + ret |= test_lshift(); + ret |= test_rshift(); + ret |= test_cmpxchg_success(); + ret |= test_cmpxchg_fail(); + ret |= test_memcpy_fault(); + ret |= test_unknown_op(); + ret |= test_max_ops(); + ret |= test_too_many_ops(); + ret |= test_memcpy_single_too_large(); + ret |= test_memcpy_single_ok_sum_too_large(); + ret |= test_page_fault(); + + return ret; +} diff --git a/tools/testing/selftests/cpu-opv/cpu-op.c b/tools/testing/selftests/cpu-opv/cpu-op.c new file mode 100644 index 000000000000..d7ba481cca04 --- /dev/null +++ b/tools/testing/selftests/cpu-opv/cpu-op.c @@ -0,0 +1,348 @@ +/* + * cpu-op.c + * + * Copyright (C) 2017 Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; only + * version 2.1 of the License. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + */ + +#define _GNU_SOURCE +#include <errno.h> +#include <sched.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <syscall.h> +#include <assert.h> +#include <signal.h> + +#include "cpu-op.h" + +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) + +int cpu_opv(struct cpu_op *cpu_opv, int cpuopcnt, int cpu, int flags) +{ + return syscall(__NR_cpu_opv, cpu_opv, cpuopcnt, cpu, flags); +} + +int cpu_op_get_current_cpu(void) +{ + int cpu; + + cpu = sched_getcpu(); + if (cpu < 0) { + perror("sched_getcpu()"); + abort(); + } + return cpu; +} + +int cpu_op_cmpxchg(void *v, void *expect, void *old, void *n, + size_t len, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)old, + .u.memcpy_op.src = (unsigned long)v, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [1] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)n, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_add(void *v, int64_t count, size_t len, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_ADD_OP, + .len = len, + .u.arithmetic_op.p = (unsigned long)v, + .u.arithmetic_op.count = count, + .u.arithmetic_op.expect_fault_p = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, + int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +static int cpu_op_cmpeqv_storep_expect_fault(intptr_t *v, intptr_t expect, + intptr_t *newp, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)newp, + .u.memcpy_op.expect_fault_dst = 0, + /* Return EAGAIN on src fault. */ + .u.memcpy_op.expect_fault_src = 1, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot, + off_t voffp, intptr_t *load, int cpu) +{ + intptr_t oldv = READ_ONCE(*v); + intptr_t *newp = (intptr_t *)(oldv + voffp); + int ret; + + if (oldv == expectnot) + return 1; + ret = cpu_op_cmpeqv_storep_expect_fault(v, oldv, newp, cpu); + if (!ret) { + *load = oldv; + return 0; + } + if (ret > 0) { + errno = EAGAIN; + return -1; + } + return -1; +} + +int cpu_op_cmpeqv_storev_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t newv2, intptr_t newv, + int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v2, + .u.memcpy_op.src = (unsigned long)&newv2, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpeqv_storev_mb_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t newv2, intptr_t newv, + int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v2, + .u.memcpy_op.src = (unsigned long)&newv2, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [2] = { + .op = CPU_MB_OP, + }, + [3] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t expect2, intptr_t newv, + int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v2, + .u.compare_op.b = (unsigned long)&expect2, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpeqv_memcpy_storev(intptr_t *v, intptr_t expect, + void *dst, void *src, size_t len, intptr_t newv, + int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)dst, + .u.memcpy_op.src = (unsigned long)src, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpeqv_memcpy_mb_storev(intptr_t *v, intptr_t expect, + void *dst, void *src, size_t len, intptr_t newv, + int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)dst, + .u.memcpy_op.src = (unsigned long)src, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [2] = { + .op = CPU_MB_OP, + }, + [3] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_addv(intptr_t *v, int64_t count, int cpu) +{ + return cpu_op_add(v, count, sizeof(intptr_t), cpu); +} diff --git a/tools/testing/selftests/cpu-opv/cpu-op.h b/tools/testing/selftests/cpu-opv/cpu-op.h new file mode 100644 index 000000000000..ba2ec578ec50 --- /dev/null +++ b/tools/testing/selftests/cpu-opv/cpu-op.h @@ -0,0 +1,68 @@ +/* + * cpu-op.h + * + * (C) Copyright 2017 - Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef CPU_OPV_H +#define CPU_OPV_H + +#include <stdlib.h> +#include <stdint.h> +#include <linux/cpu_opv.h> + +#define likely(x) __builtin_expect(!!(x), 1) +#define unlikely(x) __builtin_expect(!!(x), 0) +#define barrier() __asm__ __volatile__("" : : : "memory") + +#define ACCESS_ONCE(x) (*(__volatile__ __typeof__(x) *)&(x)) +#define WRITE_ONCE(x, v) __extension__ ({ ACCESS_ONCE(x) = (v); }) +#define READ_ONCE(x) ACCESS_ONCE(x) + +int cpu_opv(struct cpu_op *cpuopv, int cpuopcnt, int cpu, int flags); +int cpu_op_get_current_cpu(void); + +int cpu_op_cmpxchg(void *v, void *expect, void *old, void *_new, + size_t len, int cpu); +int cpu_op_add(void *v, int64_t count, size_t len, int cpu); + +int cpu_op_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, + int cpu); +int cpu_op_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot, + off_t voffp, intptr_t *load, int cpu); +int cpu_op_cmpeqv_storev_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t newv2, intptr_t newv, + int cpu); +int cpu_op_cmpeqv_storev_mb_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t newv2, intptr_t newv, + int cpu); +int cpu_op_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t expect2, intptr_t newv, + int cpu); +int cpu_op_cmpeqv_memcpy_storev(intptr_t *v, intptr_t expect, + void *dst, void *src, size_t len, intptr_t newv, + int cpu); +int cpu_op_cmpeqv_memcpy_mb_storev(intptr_t *v, intptr_t expect, + void *dst, void *src, size_t len, intptr_t newv, + int cpu); +int cpu_op_addv(intptr_t *v, int64_t count, int cpu); + +#endif /* CPU_OPV_H_ */ diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk index 5bef05d6ba39..441d7bc63bb7 100644 --- a/tools/testing/selftests/lib.mk +++ b/tools/testing/selftests/lib.mk @@ -105,6 +105,9 @@ COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) endif +# Selftest makefiles can override those targets by setting +# OVERRIDE_TARGETS = 1. +ifeq ($(OVERRIDE_TARGETS),) $(OUTPUT)/%:%.c $(LINK.c) $^ $(LDLIBS) -o $@ @@ -113,5 +116,6 @@ $(OUTPUT)/%.o:%.S $(OUTPUT)/%:%.S $(LINK.S) $^ $(LDLIBS) -o $@ +endif .PHONY: run_tests all clean install emit_tests -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

2
2
0 0

[Linux-kselftest-mirror] [RFC PATCH for 4.15 16/22] rseq: selftests: arm: workaround gcc asm size guess

by Mathieu Desnoyers

Fixes assembler errors: /tmp/cceKwI9a.s: Assembler messages: /tmp/cceKwI9a.s:849: Error: co-processor offset out of range with gcc prior to gcc-7. This can trigger if multiple rseq inline asm are used within the same function. My best guess on the cause of this issue is that gcc has a hard time figuring out the actual size of the inline asm, and therefore does not compute the offsets at which literal values can be placed from the program counter accurately. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> CC: "Paul E. McKenney" <paulmck(a)linux.vnet.ibm.com> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Paul Turner <pjt(a)google.com> CC: Thomas Gleixner <tglx(a)linutronix.de> CC: Andrew Hunter <ahh(a)google.com> CC: Andy Lutomirski <luto(a)amacapital.net> CC: Andi Kleen <andi(a)firstfloor.org> CC: Dave Watson <davejwatson(a)fb.com> CC: Chris Lameter <cl(a)linux.com> CC: Ingo Molnar <mingo(a)redhat.com> CC: "H. Peter Anvin" <hpa(a)zytor.com> CC: Ben Maurer <bmaurer(a)fb.com> CC: Steven Rostedt <rostedt(a)goodmis.org> CC: Josh Triplett <josh(a)joshtriplett.org> CC: Linus Torvalds <torvalds(a)linux-foundation.org> CC: Andrew Morton <akpm(a)linux-foundation.org> CC: Russell King <linux(a)arm.linux.org.uk> CC: Catalin Marinas <catalin.marinas(a)arm.com> CC: Will Deacon <will.deacon(a)arm.com> CC: Michael Kerrisk <mtk.manpages(a)gmail.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Florian Weimer <fweimer(a)redhat.com> CC: Shuah Khan <shuah(a)kernel.org> CC: linux-kselftest(a)vger.kernel.org CC: linux-api(a)vger.kernel.org --- tools/testing/selftests/rseq/rseq-arm.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/tools/testing/selftests/rseq/rseq-arm.h b/tools/testing/selftests/rseq/rseq-arm.h index 47953c0cef4f..6d3fda276f4d 100644 --- a/tools/testing/selftests/rseq/rseq-arm.h +++ b/tools/testing/selftests/rseq/rseq-arm.h @@ -79,12 +79,15 @@ do { \ teardown \ "b %l[" __rseq_str(cmpfail_label) "]\n\t" +#define rseq_workaround_gcc_asm_size_guess() __asm__ __volatile__("") + static inline __attribute__((always_inline)) int rseq_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, int cpu) { RSEQ_INJECT_C(9) + rseq_workaround_gcc_asm_size_guess(); __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(__rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs) @@ -115,11 +118,14 @@ int rseq_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, RSEQ_INJECT_CLOBBER : abort, cmpfail ); + rseq_workaround_gcc_asm_size_guess(); return 0; abort: + rseq_workaround_gcc_asm_size_guess(); RSEQ_INJECT_FAILED return -1; cmpfail: + rseq_workaround_gcc_asm_size_guess(); return 1; } @@ -129,6 +135,7 @@ int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot, { RSEQ_INJECT_C(9) + rseq_workaround_gcc_asm_size_guess(); __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(__rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs) @@ -164,11 +171,14 @@ int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot, RSEQ_INJECT_CLOBBER : abort, cmpfail ); + rseq_workaround_gcc_asm_size_guess(); return 0; abort: + rseq_workaround_gcc_asm_size_guess(); RSEQ_INJECT_FAILED return -1; cmpfail: + rseq_workaround_gcc_asm_size_guess(); return 1; } @@ -177,6 +187,7 @@ int rseq_addv(intptr_t *v, intptr_t count, int cpu) { RSEQ_INJECT_C(9) + rseq_workaround_gcc_asm_size_guess(); __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(__rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs) @@ -203,8 +214,10 @@ int rseq_addv(intptr_t *v, intptr_t count, int cpu) RSEQ_INJECT_CLOBBER : abort ); + rseq_workaround_gcc_asm_size_guess(); return 0; abort: + rseq_workaround_gcc_asm_size_guess(); RSEQ_INJECT_FAILED return -1; } @@ -216,6 +229,7 @@ int rseq_cmpeqv_trystorev_storev(intptr_t *v, intptr_t expect, { RSEQ_INJECT_C(9) + rseq_workaround_gcc_asm_size_guess(); __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(__rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs) @@ -253,11 +267,14 @@ int rseq_cmpeqv_trystorev_storev(intptr_t *v, intptr_t expect, RSEQ_INJECT_CLOBBER : abort, cmpfail ); + rseq_workaround_gcc_asm_size_guess(); return 0; abort: + rseq_workaround_gcc_asm_size_guess(); RSEQ_INJECT_FAILED return -1; cmpfail: + rseq_workaround_gcc_asm_size_guess(); return 1; } @@ -268,6 +285,7 @@ int rseq_cmpeqv_trystorev_storev_release(intptr_t *v, intptr_t expect, { RSEQ_INJECT_C(9) + rseq_workaround_gcc_asm_size_guess(); __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(__rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs) @@ -306,11 +324,14 @@ int rseq_cmpeqv_trystorev_storev_release(intptr_t *v, intptr_t expect, RSEQ_INJECT_CLOBBER : abort, cmpfail ); + rseq_workaround_gcc_asm_size_guess(); return 0; abort: + rseq_workaround_gcc_asm_size_guess(); RSEQ_INJECT_FAILED return -1; cmpfail: + rseq_workaround_gcc_asm_size_guess(); return 1; } @@ -321,6 +342,7 @@ int rseq_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect, { RSEQ_INJECT_C(9) + rseq_workaround_gcc_asm_size_guess(); __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(__rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs) @@ -359,11 +381,14 @@ int rseq_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect, RSEQ_INJECT_CLOBBER : abort, cmpfail ); + rseq_workaround_gcc_asm_size_guess(); return 0; abort: + rseq_workaround_gcc_asm_size_guess(); RSEQ_INJECT_FAILED return -1; cmpfail: + rseq_workaround_gcc_asm_size_guess(); return 1; } @@ -376,6 +401,7 @@ int rseq_cmpeqv_trymemcpy_storev(intptr_t *v, intptr_t expect, RSEQ_INJECT_C(9) + rseq_workaround_gcc_asm_size_guess(); __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(__rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) "str %[src], %[rseq_scratch0]\n\t" @@ -442,11 +468,14 @@ int rseq_cmpeqv_trymemcpy_storev(intptr_t *v, intptr_t expect, RSEQ_INJECT_CLOBBER : abort, cmpfail ); + rseq_workaround_gcc_asm_size_guess(); return 0; abort: + rseq_workaround_gcc_asm_size_guess(); RSEQ_INJECT_FAILED return -1; cmpfail: + rseq_workaround_gcc_asm_size_guess(); return 1; } @@ -459,6 +488,7 @@ int rseq_cmpeqv_trymemcpy_storev_release(intptr_t *v, intptr_t expect, RSEQ_INJECT_C(9) + rseq_workaround_gcc_asm_size_guess(); __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(__rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) "str %[src], %[rseq_scratch0]\n\t" @@ -526,10 +556,13 @@ int rseq_cmpeqv_trymemcpy_storev_release(intptr_t *v, intptr_t expect, RSEQ_INJECT_CLOBBER : abort, cmpfail ); + rseq_workaround_gcc_asm_size_guess(); return 0; abort: + rseq_workaround_gcc_asm_size_guess(); RSEQ_INJECT_FAILED return -1; cmpfail: + rseq_workaround_gcc_asm_size_guess(); return 1; } -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

2
1
0 0

[Linux-kselftest-mirror] [RFC PATCH for 4.15 22/22] membarrier: selftest: Test shared expedited cmd

by Mathieu Desnoyers

Test the new MEMBARRIER_CMD_SHARED_EXPEDITED and MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED commands. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Acked-by: Shuah Khan <shuahkh(a)osg.samsung.com> CC: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Andrew Hunter <ahh(a)google.com> CC: Maged Michael <maged.michael(a)gmail.com> CC: Avi Kivity <avi(a)scylladb.com> CC: Benjamin Herrenschmidt <benh(a)kernel.crashing.org> CC: Paul Mackerras <paulus(a)samba.org> CC: Michael Ellerman <mpe(a)ellerman.id.au> CC: Dave Watson <davejwatson(a)fb.com> CC: Alan Stern <stern(a)rowland.harvard.edu> CC: Will Deacon <will.deacon(a)arm.com> CC: Andy Lutomirski <luto(a)kernel.org> CC: Alice Ferrazzi <alice.ferrazzi(a)gmail.com> CC: Paul Elder <paul.elder(a)pitt.edu> CC: linux-kselftest(a)vger.kernel.org CC: linux-arch(a)vger.kernel.org --- .../testing/selftests/membarrier/membarrier_test.c | 51 +++++++++++++++++++++- 1 file changed, 50 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c index e6ee73d01fa1..bb9c58072c5c 100644 --- a/tools/testing/selftests/membarrier/membarrier_test.c +++ b/tools/testing/selftests/membarrier/membarrier_test.c @@ -132,6 +132,40 @@ static int test_membarrier_private_expedited_success(void) return 0; } +static int test_membarrier_register_shared_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + +static int test_membarrier_shared_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_SHARED_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_SHARED_EXPEDITED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + static int test_membarrier(void) { int status; @@ -154,6 +188,19 @@ static int test_membarrier(void) status = test_membarrier_private_expedited_success(); if (status) return status; + /* + * It is valid to send a shared membarrier from a non-registered + * process. + */ + status = test_membarrier_shared_expedited_success(); + if (status) + return status; + status = test_membarrier_register_shared_expedited_success(); + if (status) + return status; + status = test_membarrier_shared_expedited_success(); + if (status) + return status; return 0; } @@ -173,8 +220,10 @@ static int test_membarrier_query(void) } ksft_exit_fail_msg("sys_membarrier() failed\n"); } - if (!(ret & MEMBARRIER_CMD_SHARED)) + if (!(ret & MEMBARRIER_CMD_SHARED)) { + ksft_test_result_fail("sys_membarrier() CMD_SHARED query failed\n"); ksft_exit_fail_msg("sys_membarrier is not supported.\n"); + } ksft_test_result_pass("sys_membarrier available\n"); return 0; -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

1
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[Linux-kselftest-mirror] [RFC PATCH for 4.15 18/22] membarrier: selftest: Test private expedited cmd

by Mathieu Desnoyers

Test the new MEMBARRIER_CMD_PRIVATE_EXPEDITED and MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED commands. Add checks expecting specific error values on system calls expected to fail. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Acked-by: Shuah Khan <shuahkh(a)osg.samsung.com> Acked-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Andrew Hunter <ahh(a)google.com> CC: Maged Michael <maged.michael(a)gmail.com> CC: Avi Kivity <avi(a)scylladb.com> CC: Benjamin Herrenschmidt <benh(a)kernel.crashing.org> CC: Paul Mackerras <paulus(a)samba.org> CC: Michael Ellerman <mpe(a)ellerman.id.au> CC: Dave Watson <davejwatson(a)fb.com> CC: Alan Stern <stern(a)rowland.harvard.edu> CC: Will Deacon <will.deacon(a)arm.com> CC: Andy Lutomirski <luto(a)kernel.org> CC: Alice Ferrazzi <alice.ferrazzi(a)gmail.com> CC: Paul Elder <paul.elder(a)pitt.edu> CC: linux-kselftest(a)vger.kernel.org CC: linux-arch(a)vger.kernel.org --- Changes since v1: - return result of ksft_exit_pass from main(), silencing compiler warning about missing return value. --- .../testing/selftests/membarrier/membarrier_test.c | 111 ++++++++++++++++++--- 1 file changed, 95 insertions(+), 16 deletions(-) diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c index 9e674d9514d1..e6ee73d01fa1 100644 --- a/tools/testing/selftests/membarrier/membarrier_test.c +++ b/tools/testing/selftests/membarrier/membarrier_test.c @@ -16,49 +16,119 @@ static int sys_membarrier(int cmd, int flags) static int test_membarrier_cmd_fail(void) { int cmd = -1, flags = 0; + const char *test_name = "sys membarrier invalid command"; if (sys_membarrier(cmd, flags) != -1) { ksft_exit_fail_msg( - "sys membarrier invalid command test: command = %d, flags = %d. Should fail, but passed\n", - cmd, flags); + "%s test: command = %d, flags = %d. Should fail, but passed\n", + test_name, cmd, flags); + } + if (errno != EINVAL) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EINVAL, strerror(EINVAL), + errno, strerror(errno)); } ksft_test_result_pass( - "sys membarrier invalid command test: command = %d, flags = %d. Failed as expected\n", - cmd, flags); + "%s test: command = %d, flags = %d, errno = %d. Failed as expected\n", + test_name, cmd, flags, errno); return 0; } static int test_membarrier_flags_fail(void) { int cmd = MEMBARRIER_CMD_QUERY, flags = 1; + const char *test_name = "sys membarrier MEMBARRIER_CMD_QUERY invalid flags"; if (sys_membarrier(cmd, flags) != -1) { ksft_exit_fail_msg( - "sys membarrier MEMBARRIER_CMD_QUERY invalid flags test: flags = %d. Should fail, but passed\n", - flags); + "%s test: flags = %d. Should fail, but passed\n", + test_name, flags); + } + if (errno != EINVAL) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EINVAL, strerror(EINVAL), + errno, strerror(errno)); } ksft_test_result_pass( - "sys membarrier MEMBARRIER_CMD_QUERY invalid flags test: flags = %d. Failed as expected\n", - flags); + "%s test: flags = %d, errno = %d. Failed as expected\n", + test_name, flags, errno); return 0; } -static int test_membarrier_success(void) +static int test_membarrier_shared_success(void) { int cmd = MEMBARRIER_CMD_SHARED, flags = 0; - const char *test_name = "sys membarrier MEMBARRIER_CMD_SHARED\n"; + const char *test_name = "sys membarrier MEMBARRIER_CMD_SHARED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", test_name, flags); + return 0; +} + +static int test_membarrier_private_expedited_fail(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED not registered failure"; + + if (sys_membarrier(cmd, flags) != -1) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should fail, but passed\n", + test_name, flags); + } + if (errno != EPERM) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EPERM, strerror(EPERM), + errno, strerror(errno)); + } + + ksft_test_result_pass( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + return 0; +} + +static int test_membarrier_register_private_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED"; if (sys_membarrier(cmd, flags) != 0) { ksft_exit_fail_msg( - "sys membarrier MEMBARRIER_CMD_SHARED test: flags = %d\n", - flags); + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); } ksft_test_result_pass( - "sys membarrier MEMBARRIER_CMD_SHARED test: flags = %d\n", - flags); + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + +static int test_membarrier_private_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); return 0; } @@ -72,7 +142,16 @@ static int test_membarrier(void) status = test_membarrier_flags_fail(); if (status) return status; - status = test_membarrier_success(); + status = test_membarrier_shared_success(); + if (status) + return status; + status = test_membarrier_private_expedited_fail(); + if (status) + return status; + status = test_membarrier_register_private_expedited_success(); + if (status) + return status; + status = test_membarrier_private_expedited_success(); if (status) return status; return 0; @@ -108,5 +187,5 @@ int main(int argc, char **argv) test_membarrier_query(); test_membarrier(); - ksft_exit_pass(); + return ksft_exit_pass(); } -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

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0
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[Linux-kselftest-mirror] Towards 4.14 LTS

by Tom Gall

At Linaro we’ve been putting effort into regularly running kernel tests over arm, arm64 and x86_64 targets. On those targets we’re running mainline, -next, 4.4, and 4.9 kernels and yes we are adding to this list as the hardware capacity grows. For test buckets we’re using just LTP, kselftest and libhugetlbfs and like kernels we will add to this list. With the 4.14 cycle being a little ‘different’ in so much as the goal to have it be an LTS kernel I think it’s important to take a look at some 4.14 test results. Grab a beverage, this is a bit of a long post. But quick summery 4.14 as released looks just as good as 4.13, for the test buckets I named above. I’ve enclosed our short form report. We break down the boards/arch combos for each bucket pass/skip or potentially fails. Pretty straight forward. Skips generally happen for a few reasons 1) crappy test cases 2) test isn’t appropriate (x86 specific tests so don’t run elsewhere) With this, we have a decent baseline for 4.14 and other kernels going forward. Summary ------------------------------------------------------------------------ kernel: 4.14.0 git repo: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git branch: master git commit: bebc6082da0a9f5d47a1ea2edc099bf671058bd4 git describe: v4.14 Test details: https://qa-reports.linaro.org/lkft/linux-mainline-oe/build/v4.14 No regressions (compared to build v4.14-rc8) Boards, architectures and test suites: ------------------------------------- hi6220-hikey - arm64 * boot - pass: 20 * kselftest - skip: 16, pass: 38 * libhugetlbfs - skip: 1, pass: 90 * ltp-cap_bounds-tests - pass: 2 * ltp-containers-tests - pass: 76 * ltp-fcntl-locktests-tests - pass: 2 * ltp-filecaps-tests - pass: 2 * ltp-fs-tests - pass: 60 * ltp-fs_bind-tests - pass: 2 * ltp-fs_perms_simple-tests - pass: 19 * ltp-fsx-tests - pass: 2 * ltp-hugetlb-tests - skip: 1, pass: 21 * ltp-io-tests - pass: 3 * ltp-ipc-tests - pass: 9 * ltp-math-tests - pass: 11 * ltp-nptl-tests - pass: 2 * ltp-pty-tests - pass: 4 * ltp-sched-tests - pass: 14 * ltp-securebits-tests - pass: 4 * ltp-syscalls-tests - skip: 122, pass: 983 * ltp-timers-tests - pass: 12 juno-r2 - arm64 * boot - pass: 20 * kselftest - skip: 15, pass: 38 * libhugetlbfs - skip: 1, pass: 90 * ltp-cap_bounds-tests - pass: 2 * ltp-containers-tests - pass: 76 * ltp-fcntl-locktests-tests - pass: 2 * ltp-filecaps-tests - pass: 2 * ltp-fs-tests - pass: 60 * ltp-fs_bind-tests - pass: 2 * ltp-fs_perms_simple-tests - pass: 19 * ltp-fsx-tests - pass: 2 * ltp-hugetlb-tests - pass: 22 * ltp-io-tests - pass: 3 * ltp-ipc-tests - pass: 9 * ltp-math-tests - pass: 11 * ltp-nptl-tests - pass: 2 * ltp-pty-tests - pass: 4 * ltp-sched-tests - pass: 10 * ltp-securebits-tests - pass: 4 * ltp-syscalls-tests - skip: 156, pass: 943 * ltp-timers-tests - pass: 12 x15 - arm * boot - pass: 20 * kselftest - skip: 17, pass: 36 * libhugetlbfs - skip: 1, pass: 87 * ltp-cap_bounds-tests - pass: 2 * ltp-containers-tests - pass: 64 * ltp-fcntl-locktests-tests - pass: 2 * ltp-filecaps-tests - pass: 2 * ltp-fs-tests - pass: 60 * ltp-fs_bind-tests - pass: 2 * ltp-fs_perms_simple-tests - pass: 19 * ltp-fsx-tests - pass: 2 * ltp-hugetlb-tests - skip: 2, pass: 20 * ltp-io-tests - pass: 3 * ltp-ipc-tests - pass: 9 * ltp-math-tests - pass: 11 * ltp-nptl-tests - pass: 2 * ltp-pty-tests - pass: 4 * ltp-sched-tests - skip: 1, pass: 13 * ltp-securebits-tests - pass: 4 * ltp-syscalls-tests - skip: 66, pass: 1040 * ltp-timers-tests - pass: 12 dell-poweredge-r200 - x86_64 * boot - pass: 19 * kselftest - skip: 11, pass: 54 * libhugetlbfs - skip: 1, pass: 76 * ltp-cap_bounds-tests - pass: 1 * ltp-containers-tests - pass: 64 * ltp-fcntl-locktests-tests - pass: 2 * ltp-filecaps-tests - pass: 2 * ltp-fs-tests - skip: 1, pass: 61 * ltp-fs_bind-tests - pass: 1 * ltp-fs_perms_simple-tests - pass: 19 * ltp-fsx-tests - pass: 2 * ltp-hugetlb-tests - pass: 22 * ltp-io-tests - pass: 3 * ltp-ipc-tests - pass: 8 * ltp-math-tests - pass: 11 * ltp-nptl-tests - pass: 2 * ltp-pty-tests - pass: 4 * ltp-sched-tests - pass: 9 * ltp-securebits-tests - pass: 3 * ltp-syscalls-tests - skip: 163, pass: 962 Lots of green. Let’s now talk about coverage, the pandora’s box of validation. It’s never perfect. There’s a bazillion different build combos. Even tools can make a difference. We’ve seen a case where the dhcp client from open embedded didn’t trigger a network regression in one of the LTS RCs but Debian’s dhclient did. Of no surprise between what we and others have, it’s not perfect coverage, and there are only so many build, boot and run cycles to execute the test buckets with various combinations so we need to stay sensible as far as kernel configs go. Does this kind of system actually FIND anything and is it useful for watching for 4.14 regressions as fixes are introduced? I would assert the answer is yes. We do have data for a couple of kernel cycles but it’s also somewhat dirty as we have been in the process of detecting and tossing out dodgy test cases. Take 4.14-RC7, there was one failure that is no longer there. ltp-syscalls-tests : perf_event_open02 (arm64) As things are getting merged post 4.14 there are some failures cropping up. Here’s an example: https://qa-reports.linaro.org/lkft/linux-mainline-oe/tests/ltp-fs-tests/pro… Note the Build column, the kernels are identified by their git describe. Don’t be alarmed if you see n/a in some columns, the queues are catching up so data will be filling in. So why didn’t we report these? As mentioned we’ve been tossing out dodgy test cases to get to a clean baseline. We don’t need or want noise. For LTS, I want the system when it detects a failure to enable a quick bisect involving the affected test bucket. Given the nature of kernel bugs tho, there is that class of bug which only happens occasionally. This brings up a conundrum when you have a system like this. A failure turns up, it’s not consistently failing and a path forward isn’t necessarily obvious. Remember for an LTS RC, there’s a defined window to comment. I’ve been flamed for reporting a LTS RC test failure which didn't include a fix, just a ‘this fails, and we’re looking at it.’ I’ve been flamed for not reporting a failure that had been detected but not raised to the list since it was still being debugged after the RC comment window had closed. My 1990s vintage asbestos underwear thankfully is functional. There is probably a case to be made either way. It boils down to either: Red Pill) Be fully open reporting early and often Blue Pill) Be closed and only pass up failures that include a patch to fix a bug. Red Pill does expose drama yet it also creates an opportunity for others to get involved. Blue Pill protects the community from noise and the creation of frustration that the system has cried wolf for perhaps a stupid test case. Likewise from a maintainer or dev perspective, there’s a sea of data. Time is precious, and who wants to waste it on some snipe hunt? I’m personally in the Red Pill camp. I like being open. Be it 0day, LKFT or whatever I think the responsibility is on us running these projects to be open and give full guidance. Yes there will be noise. Noise can suggest dodgy test cases or bugs that are hard to trigger. Either way they warrant a look. Take Arnd Bergman’s work to get rid of kernel warnings. Same concept in my opinion. Dodgy test cases can easily be put onto skip lists. As we’ve been running for a number of months now, data and ol fashioned code review has been our guide to banish dodgy test cases to skip lists. Going forward new test cases will pop up. Some of them will be dodgy. There’s lots of room for collaboration in improving test cases. In summary I think for mainline, LTS kernels etc, we have a good warning system to detect regressions as patches flow in. It will evolve and improve as is the nature of our open community. From kernelci, LKFT, 0day, etc, that’s a good set of automated systems to ferret out problems introduced by patches. Tom-- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

4
6
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[Linux-kselftest-mirror] [GIT PULL] kselftest fix for 4.15-rc1

by Shuah Khan

Hi Linus, Please pull the following Kselftest update for 4.15-rc1. This update to Kselftest consists of cleanup patches, fixes, and a new test for ion buffer sharing. Fixes include changes to skip firmware tests on systems that aren't configured to support them, as opposed to failing them. Patches have been in linux-next for a while. I had to rebase to 4.14 to resolve a minor conflict with the SPDX-License change selftest Makefile that went into 4.14-rc8. Diff for the update is attached. thanks, -- Shuah ----------------------------------------------------------------------------------- The following changes since commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4: Linux 4.14 (2017-11-12 10:46:13 -0800) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux-kselftest-4.15-rc1 for you to fetch changes up to c3e0d179bff503cd56758579a2c33216b40b9b7b: selftests: firmware: skip unsupported custom firmware fallback tests (2017-11-15 08:27:57 -0700) ---------------------------------------------------------------- linux-kselftest-4.15-rc1 This update to Kselftest consists of cleanup patches, fixes, and a new test for ion buffer sharing. Fixes include changes to skip firmware tests on systems that aren't configured to support them, as opposed to failing them. ---------------------------------------------------------------- Amit Pundir (2): selftests: firmware: skip unsupported async loading tests selftests: firmware: skip unsupported custom firmware fallback tests Greg Hackmann (1): selftests: vdso_test: support ARM64 targets Lei Yang (2): selftests: ftrace: add more config fragments selftests: memfd_test.c: fix compilation warning. Masami Hiramatsu (2): selftests/ftrace: Do not use arch dependent do_IRQ as a target function selftests/ftrace: Introduce exit_pass and exit_fail Pintu Agarwal (1): android/ion: userspace test utility for ion buffer sharing Shuah Khan (3): selftests: timers: Update .gitignore with newly added tests selftests: vm: Update .gitignore with newly added tests selftests: seccomp: update .gitignore with newly added tests Steve Muckle (1): selftests/exec: include cwd in long path calculation Sumit Semwal (1): selftests: breakpoints: fix compile error on breakpoint_test_arm64 lei.yang(a)windriver.com (2): selftests: add missing test result status in memory-hotplug test selftests: remove obsolete kconfig fragment for cpu-hotplug tools/testing/selftests/Makefile | 3 +- tools/testing/selftests/android/Makefile | 46 ++++ tools/testing/selftests/android/ion/.gitignore | 2 + tools/testing/selftests/android/ion/Makefile | 16 ++ tools/testing/selftests/android/ion/README | 101 ++++++++ tools/testing/selftests/android/ion/config | 4 + tools/testing/selftests/android/ion/ion.h | 143 ++++++++++++ tools/testing/selftests/android/ion/ion_test.sh | 55 +++++ .../testing/selftests/android/ion/ionapp_export.c | 135 +++++++++++ .../testing/selftests/android/ion/ionapp_import.c | 88 +++++++ tools/testing/selftests/android/ion/ionutils.c | 259 +++++++++++++++++++++ tools/testing/selftests/android/ion/ionutils.h | 55 +++++ tools/testing/selftests/android/ion/ipcsocket.c | 227 ++++++++++++++++++ tools/testing/selftests/android/ion/ipcsocket.h | 35 +++ tools/testing/selftests/android/run.sh | 3 + .../selftests/breakpoints/breakpoint_test_arm64.c | 1 + tools/testing/selftests/cpu-hotplug/config | 1 - tools/testing/selftests/exec/execveat.c | 27 ++- tools/testing/selftests/firmware/fw_fallback.sh | 38 ++- tools/testing/selftests/firmware/fw_filesystem.sh | 34 +-- tools/testing/selftests/ftrace/config | 4 + tools/testing/selftests/ftrace/ftracetest | 7 + .../selftests/ftrace/test.d/00basic/basic4.tc | 2 +- .../selftests/ftrace/test.d/event/event-enable.tc | 2 +- .../selftests/ftrace/test.d/event/event-pid.tc | 2 +- .../ftrace/test.d/event/subsystem-enable.tc | 2 +- .../ftrace/test.d/event/toplevel-enable.tc | 2 +- .../ftrace/test.d/ftrace/fgraph-filter-stack.tc | 2 +- .../ftrace/test.d/ftrace/fgraph-filter.tc | 2 +- .../ftrace/test.d/ftrace/func-filter-pid.tc | 2 +- .../ftrace/test.d/ftrace/func_event_triggers.tc | 5 +- .../ftrace/test.d/ftrace/func_profiler.tc | 2 +- .../ftrace/test.d/ftrace/func_set_ftrace_file.tc | 4 +- .../test.d/ftrace/func_traceonoff_triggers.tc | 2 +- .../ftrace/test.d/instances/instance-event.tc | 2 +- .../selftests/ftrace/test.d/instances/instance.tc | 2 +- .../selftests/ftrace/test.d/kprobe/busy_check.tc | 2 +- .../selftests/ftrace/test.d/kprobe/kprobe_args.tc | 2 +- .../ftrace/test.d/kprobe/kprobe_args_type.tc | 2 +- .../ftrace/test.d/kprobe/kretprobe_args.tc | 2 +- tools/testing/selftests/ftrace/test.d/template | 1 + .../ftrace/test.d/trigger/trigger-eventonoff.tc | 2 +- .../ftrace/test.d/trigger/trigger-filter.tc | 2 +- .../ftrace/test.d/trigger/trigger-hist-mod.tc | 2 +- .../ftrace/test.d/trigger/trigger-hist.tc | 2 +- .../ftrace/test.d/trigger/trigger-multihist.tc | 2 +- .../ftrace/test.d/trigger/trigger-snapshot.tc | 2 +- .../ftrace/test.d/trigger/trigger-stacktrace.tc | 2 +- .../ftrace/test.d/trigger/trigger-traceonoff.tc | 2 +- tools/testing/selftests/memfd/memfd_test.c | 4 +- tools/testing/selftests/memory-hotplug/Makefile | 4 +- tools/testing/selftests/seccomp/.gitignore | 1 + tools/testing/selftests/timers/.gitignore | 2 + tools/testing/selftests/vDSO/vdso_test.c | 19 +- tools/testing/selftests/vm/.gitignore | 2 + 55 files changed, 1303 insertions(+), 71 deletions(-) create mode 100644 tools/testing/selftests/android/Makefile create mode 100644 tools/testing/selftests/android/ion/.gitignore create mode 100644 tools/testing/selftests/android/ion/Makefile create mode 100644 tools/testing/selftests/android/ion/README create mode 100644 tools/testing/selftests/android/ion/config create mode 100644 tools/testing/selftests/android/ion/ion.h create mode 100755 tools/testing/selftests/android/ion/ion_test.sh create mode 100644 tools/testing/selftests/android/ion/ionapp_export.c create mode 100644 tools/testing/selftests/android/ion/ionapp_import.c create mode 100644 tools/testing/selftests/android/ion/ionutils.c create mode 100644 tools/testing/selftests/android/ion/ionutils.h create mode 100644 tools/testing/selftests/android/ion/ipcsocket.c create mode 100644 tools/testing/selftests/android/ion/ipcsocket.h create mode 100755 tools/testing/selftests/android/run.sh -----------------------------------------------------------------------------------

7 years, 5 months

1
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[Linux-kselftest-mirror] [RFC PATCH for 4.15 23/24] membarrier: selftest: Test private expedited sync core cmd

by Mathieu Desnoyers

Test the new MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE and MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE commands. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> CC: Shuah Khan <shuahkh(a)osg.samsung.com> CC: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Andrew Hunter <ahh(a)google.com> CC: Maged Michael <maged.michael(a)gmail.com> CC: Avi Kivity <avi(a)scylladb.com> CC: Benjamin Herrenschmidt <benh(a)kernel.crashing.org> CC: Paul Mackerras <paulus(a)samba.org> CC: Michael Ellerman <mpe(a)ellerman.id.au> CC: Dave Watson <davejwatson(a)fb.com> CC: Alan Stern <stern(a)rowland.harvard.edu> CC: Will Deacon <will.deacon(a)arm.com> CC: Andy Lutomirski <luto(a)kernel.org> CC: Alice Ferrazzi <alice.ferrazzi(a)gmail.com> CC: Paul Elder <paul.elder(a)pitt.edu> CC: linux-kselftest(a)vger.kernel.org CC: linux-arch(a)vger.kernel.org --- .../testing/selftests/membarrier/membarrier_test.c | 73 ++++++++++++++++++++++ 1 file changed, 73 insertions(+) diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c index bb9c58072c5c..d9ab8b6ee52e 100644 --- a/tools/testing/selftests/membarrier/membarrier_test.c +++ b/tools/testing/selftests/membarrier/membarrier_test.c @@ -132,6 +132,63 @@ static int test_membarrier_private_expedited_success(void) return 0; } +static int test_membarrier_private_expedited_sync_core_fail(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE not registered failure"; + + if (sys_membarrier(cmd, flags) != -1) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should fail, but passed\n", + test_name, flags); + } + if (errno != EPERM) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EPERM, strerror(EPERM), + errno, strerror(errno)); + } + + ksft_test_result_pass( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + return 0; +} + +static int test_membarrier_register_private_expedited_sync_core_success(void) +{ + int cmd = MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + +static int test_membarrier_private_expedited_sync_core_success(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + static int test_membarrier_register_shared_expedited_success(void) { int cmd = MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED, flags = 0; @@ -188,6 +245,22 @@ static int test_membarrier(void) status = test_membarrier_private_expedited_success(); if (status) return status; + status = sys_membarrier(MEMBARRIER_CMD_QUERY, 0); + if (status < 0) { + ksft_test_result_fail("sys_membarrier() failed\n"); + return status; + } + if (status & MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE) { + status = test_membarrier_private_expedited_sync_core_fail(); + if (status) + return status; + status = test_membarrier_register_private_expedited_sync_core_success(); + if (status) + return status; + status = test_membarrier_private_expedited_sync_core_success(); + if (status) + return status; + } /* * It is valid to send a shared membarrier from a non-registered * process. -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

2
2
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[Linux-kselftest-mirror] [RFC PATCH for 4.15 19/24] membarrier: selftest: Test shared expedited cmd

by Mathieu Desnoyers

Test the new MEMBARRIER_CMD_SHARED_EXPEDITED and MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED commands. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> CC: Shuah Khan <shuahkh(a)osg.samsung.com> CC: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Andrew Hunter <ahh(a)google.com> CC: Maged Michael <maged.michael(a)gmail.com> CC: Avi Kivity <avi(a)scylladb.com> CC: Benjamin Herrenschmidt <benh(a)kernel.crashing.org> CC: Paul Mackerras <paulus(a)samba.org> CC: Michael Ellerman <mpe(a)ellerman.id.au> CC: Dave Watson <davejwatson(a)fb.com> CC: Alan Stern <stern(a)rowland.harvard.edu> CC: Will Deacon <will.deacon(a)arm.com> CC: Andy Lutomirski <luto(a)kernel.org> CC: Alice Ferrazzi <alice.ferrazzi(a)gmail.com> CC: Paul Elder <paul.elder(a)pitt.edu> CC: linux-kselftest(a)vger.kernel.org CC: linux-arch(a)vger.kernel.org --- .../testing/selftests/membarrier/membarrier_test.c | 51 +++++++++++++++++++++- 1 file changed, 50 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c index e6ee73d01fa1..bb9c58072c5c 100644 --- a/tools/testing/selftests/membarrier/membarrier_test.c +++ b/tools/testing/selftests/membarrier/membarrier_test.c @@ -132,6 +132,40 @@ static int test_membarrier_private_expedited_success(void) return 0; } +static int test_membarrier_register_shared_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + +static int test_membarrier_shared_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_SHARED_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_SHARED_EXPEDITED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + static int test_membarrier(void) { int status; @@ -154,6 +188,19 @@ static int test_membarrier(void) status = test_membarrier_private_expedited_success(); if (status) return status; + /* + * It is valid to send a shared membarrier from a non-registered + * process. + */ + status = test_membarrier_shared_expedited_success(); + if (status) + return status; + status = test_membarrier_register_shared_expedited_success(); + if (status) + return status; + status = test_membarrier_shared_expedited_success(); + if (status) + return status; return 0; } @@ -173,8 +220,10 @@ static int test_membarrier_query(void) } ksft_exit_fail_msg("sys_membarrier() failed\n"); } - if (!(ret & MEMBARRIER_CMD_SHARED)) + if (!(ret & MEMBARRIER_CMD_SHARED)) { + ksft_test_result_fail("sys_membarrier() CMD_SHARED query failed\n"); ksft_exit_fail_msg("sys_membarrier is not supported.\n"); + } ksft_test_result_pass("sys_membarrier available\n"); return 0; -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

2
1
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[Linux-kselftest-mirror] [RFC PATCH v2 for 4.15 15/24] membarrier: selftest: Test private expedited cmd

by Mathieu Desnoyers

Test the new MEMBARRIER_CMD_PRIVATE_EXPEDITED and MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED commands. Add checks expecting specific error values on system calls expected to fail. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Acked-by: Shuah Khan <shuahkh(a)osg.samsung.com> Acked-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Andrew Hunter <ahh(a)google.com> CC: Maged Michael <maged.michael(a)gmail.com> CC: Avi Kivity <avi(a)scylladb.com> CC: Benjamin Herrenschmidt <benh(a)kernel.crashing.org> CC: Paul Mackerras <paulus(a)samba.org> CC: Michael Ellerman <mpe(a)ellerman.id.au> CC: Dave Watson <davejwatson(a)fb.com> CC: Alan Stern <stern(a)rowland.harvard.edu> CC: Will Deacon <will.deacon(a)arm.com> CC: Andy Lutomirski <luto(a)kernel.org> CC: Alice Ferrazzi <alice.ferrazzi(a)gmail.com> CC: Paul Elder <paul.elder(a)pitt.edu> CC: linux-kselftest(a)vger.kernel.org CC: linux-arch(a)vger.kernel.org --- Changes since v1: - return result of ksft_exit_pass from main(), silencing compiler warning about missing return value. --- .../testing/selftests/membarrier/membarrier_test.c | 111 ++++++++++++++++++--- 1 file changed, 95 insertions(+), 16 deletions(-) diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c index 9e674d9514d1..e6ee73d01fa1 100644 --- a/tools/testing/selftests/membarrier/membarrier_test.c +++ b/tools/testing/selftests/membarrier/membarrier_test.c @@ -16,49 +16,119 @@ static int sys_membarrier(int cmd, int flags) static int test_membarrier_cmd_fail(void) { int cmd = -1, flags = 0; + const char *test_name = "sys membarrier invalid command"; if (sys_membarrier(cmd, flags) != -1) { ksft_exit_fail_msg( - "sys membarrier invalid command test: command = %d, flags = %d. Should fail, but passed\n", - cmd, flags); + "%s test: command = %d, flags = %d. Should fail, but passed\n", + test_name, cmd, flags); + } + if (errno != EINVAL) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EINVAL, strerror(EINVAL), + errno, strerror(errno)); } ksft_test_result_pass( - "sys membarrier invalid command test: command = %d, flags = %d. Failed as expected\n", - cmd, flags); + "%s test: command = %d, flags = %d, errno = %d. Failed as expected\n", + test_name, cmd, flags, errno); return 0; } static int test_membarrier_flags_fail(void) { int cmd = MEMBARRIER_CMD_QUERY, flags = 1; + const char *test_name = "sys membarrier MEMBARRIER_CMD_QUERY invalid flags"; if (sys_membarrier(cmd, flags) != -1) { ksft_exit_fail_msg( - "sys membarrier MEMBARRIER_CMD_QUERY invalid flags test: flags = %d. Should fail, but passed\n", - flags); + "%s test: flags = %d. Should fail, but passed\n", + test_name, flags); + } + if (errno != EINVAL) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EINVAL, strerror(EINVAL), + errno, strerror(errno)); } ksft_test_result_pass( - "sys membarrier MEMBARRIER_CMD_QUERY invalid flags test: flags = %d. Failed as expected\n", - flags); + "%s test: flags = %d, errno = %d. Failed as expected\n", + test_name, flags, errno); return 0; } -static int test_membarrier_success(void) +static int test_membarrier_shared_success(void) { int cmd = MEMBARRIER_CMD_SHARED, flags = 0; - const char *test_name = "sys membarrier MEMBARRIER_CMD_SHARED\n"; + const char *test_name = "sys membarrier MEMBARRIER_CMD_SHARED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", test_name, flags); + return 0; +} + +static int test_membarrier_private_expedited_fail(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED not registered failure"; + + if (sys_membarrier(cmd, flags) != -1) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should fail, but passed\n", + test_name, flags); + } + if (errno != EPERM) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EPERM, strerror(EPERM), + errno, strerror(errno)); + } + + ksft_test_result_pass( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + return 0; +} + +static int test_membarrier_register_private_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED"; if (sys_membarrier(cmd, flags) != 0) { ksft_exit_fail_msg( - "sys membarrier MEMBARRIER_CMD_SHARED test: flags = %d\n", - flags); + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); } ksft_test_result_pass( - "sys membarrier MEMBARRIER_CMD_SHARED test: flags = %d\n", - flags); + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + +static int test_membarrier_private_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); return 0; } @@ -72,7 +142,16 @@ static int test_membarrier(void) status = test_membarrier_flags_fail(); if (status) return status; - status = test_membarrier_success(); + status = test_membarrier_shared_success(); + if (status) + return status; + status = test_membarrier_private_expedited_fail(); + if (status) + return status; + status = test_membarrier_register_private_expedited_success(); + if (status) + return status; + status = test_membarrier_private_expedited_success(); if (status) return status; return 0; @@ -108,5 +187,5 @@ int main(int argc, char **argv) test_membarrier_query(); test_membarrier(); - ksft_exit_pass(); + return ksft_exit_pass(); } -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

1
0
0 0

[Linux-kselftest-mirror] [RFC PATCH for 4.15 14/24] Restartable sequences selftests: arm: workaround gcc asm size guess

by Mathieu Desnoyers

Fixes assembler errors: /tmp/cceKwI9a.s: Assembler messages: /tmp/cceKwI9a.s:849: Error: co-processor offset out of range with gcc prior to gcc-7. This can trigger if multiple rseq inline asm are used within the same function. My best guess on the cause of this issue is that gcc has a hard time figuring out the actual size of the inline asm, and therefore does not compute the offsets at which literal values can be placed from the program counter accurately. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> CC: "Paul E. McKenney" <paulmck(a)linux.vnet.ibm.com> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Paul Turner <pjt(a)google.com> CC: Thomas Gleixner <tglx(a)linutronix.de> CC: Andrew Hunter <ahh(a)google.com> CC: Andy Lutomirski <luto(a)amacapital.net> CC: Andi Kleen <andi(a)firstfloor.org> CC: Dave Watson <davejwatson(a)fb.com> CC: Chris Lameter <cl(a)linux.com> CC: Ingo Molnar <mingo(a)redhat.com> CC: "H. Peter Anvin" <hpa(a)zytor.com> CC: Ben Maurer <bmaurer(a)fb.com> CC: Steven Rostedt <rostedt(a)goodmis.org> CC: Josh Triplett <josh(a)joshtriplett.org> CC: Linus Torvalds <torvalds(a)linux-foundation.org> CC: Andrew Morton <akpm(a)linux-foundation.org> CC: Russell King <linux(a)arm.linux.org.uk> CC: Catalin Marinas <catalin.marinas(a)arm.com> CC: Will Deacon <will.deacon(a)arm.com> CC: Michael Kerrisk <mtk.manpages(a)gmail.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Florian Weimer <fweimer(a)redhat.com> CC: Shuah Khan <shuah(a)kernel.org> CC: linux-kselftest(a)vger.kernel.org CC: linux-api(a)vger.kernel.org --- tools/testing/selftests/rseq/rseq-arm.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/tools/testing/selftests/rseq/rseq-arm.h b/tools/testing/selftests/rseq/rseq-arm.h index b02489cde80b..c42db74c48ae 100644 --- a/tools/testing/selftests/rseq/rseq-arm.h +++ b/tools/testing/selftests/rseq/rseq-arm.h @@ -79,12 +79,15 @@ do { \ teardown \ "b %l[" __rseq_str(cmpfail_label) "]\n\t" +#define rseq_workaround_gcc_asm_size_guess() __asm__ __volatile__("") + static inline __attribute__((always_inline)) int rseq_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, int cpu) { RSEQ_INJECT_C(9) + rseq_workaround_gcc_asm_size_guess(); __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(__rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs) @@ -115,11 +118,14 @@ int rseq_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, RSEQ_INJECT_CLOBBER : abort, cmpfail ); + rseq_workaround_gcc_asm_size_guess(); return 0; abort: + rseq_workaround_gcc_asm_size_guess(); RSEQ_INJECT_FAILED return -1; cmpfail: + rseq_workaround_gcc_asm_size_guess(); return 1; } @@ -129,6 +135,7 @@ int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot, { RSEQ_INJECT_C(9) + rseq_workaround_gcc_asm_size_guess(); __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(__rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs) @@ -164,11 +171,14 @@ int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot, RSEQ_INJECT_CLOBBER : abort, cmpfail ); + rseq_workaround_gcc_asm_size_guess(); return 0; abort: + rseq_workaround_gcc_asm_size_guess(); RSEQ_INJECT_FAILED return -1; cmpfail: + rseq_workaround_gcc_asm_size_guess(); return 1; } @@ -177,6 +187,7 @@ int rseq_addv(intptr_t *v, intptr_t count, int cpu) { RSEQ_INJECT_C(9) + rseq_workaround_gcc_asm_size_guess(); __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(__rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs) @@ -203,8 +214,10 @@ int rseq_addv(intptr_t *v, intptr_t count, int cpu) RSEQ_INJECT_CLOBBER : abort ); + rseq_workaround_gcc_asm_size_guess(); return 0; abort: + rseq_workaround_gcc_asm_size_guess(); RSEQ_INJECT_FAILED return -1; } @@ -216,6 +229,7 @@ int rseq_cmpeqv_trystorev_storev(intptr_t *v, intptr_t expect, { RSEQ_INJECT_C(9) + rseq_workaround_gcc_asm_size_guess(); __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(__rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs) @@ -253,11 +267,14 @@ int rseq_cmpeqv_trystorev_storev(intptr_t *v, intptr_t expect, RSEQ_INJECT_CLOBBER : abort, cmpfail ); + rseq_workaround_gcc_asm_size_guess(); return 0; abort: + rseq_workaround_gcc_asm_size_guess(); RSEQ_INJECT_FAILED return -1; cmpfail: + rseq_workaround_gcc_asm_size_guess(); return 1; } @@ -268,6 +285,7 @@ int rseq_cmpeqv_trystorev_storev_release(intptr_t *v, intptr_t expect, { RSEQ_INJECT_C(9) + rseq_workaround_gcc_asm_size_guess(); __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(__rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs) @@ -306,11 +324,14 @@ int rseq_cmpeqv_trystorev_storev_release(intptr_t *v, intptr_t expect, RSEQ_INJECT_CLOBBER : abort, cmpfail ); + rseq_workaround_gcc_asm_size_guess(); return 0; abort: + rseq_workaround_gcc_asm_size_guess(); RSEQ_INJECT_FAILED return -1; cmpfail: + rseq_workaround_gcc_asm_size_guess(); return 1; } @@ -321,6 +342,7 @@ int rseq_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect, { RSEQ_INJECT_C(9) + rseq_workaround_gcc_asm_size_guess(); __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(__rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs) @@ -359,11 +381,14 @@ int rseq_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect, RSEQ_INJECT_CLOBBER : abort, cmpfail ); + rseq_workaround_gcc_asm_size_guess(); return 0; abort: + rseq_workaround_gcc_asm_size_guess(); RSEQ_INJECT_FAILED return -1; cmpfail: + rseq_workaround_gcc_asm_size_guess(); return 1; } @@ -376,6 +401,7 @@ int rseq_cmpeqv_trymemcpy_storev(intptr_t *v, intptr_t expect, RSEQ_INJECT_C(9) + rseq_workaround_gcc_asm_size_guess(); __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(__rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) "str %[src], %[rseq_scratch0]\n\t" @@ -442,11 +468,14 @@ int rseq_cmpeqv_trymemcpy_storev(intptr_t *v, intptr_t expect, RSEQ_INJECT_CLOBBER : abort, cmpfail ); + rseq_workaround_gcc_asm_size_guess(); return 0; abort: + rseq_workaround_gcc_asm_size_guess(); RSEQ_INJECT_FAILED return -1; cmpfail: + rseq_workaround_gcc_asm_size_guess(); return 1; } @@ -459,6 +488,7 @@ int rseq_cmpeqv_trymemcpy_storev_release(intptr_t *v, intptr_t expect, RSEQ_INJECT_C(9) + rseq_workaround_gcc_asm_size_guess(); __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(__rseq_table, 0x0, 0x0, 1f, 2f-1f, 4f) "str %[src], %[rseq_scratch0]\n\t" @@ -526,10 +556,13 @@ int rseq_cmpeqv_trymemcpy_storev_release(intptr_t *v, intptr_t expect, RSEQ_INJECT_CLOBBER : abort, cmpfail ); + rseq_workaround_gcc_asm_size_guess(); return 0; abort: + rseq_workaround_gcc_asm_size_guess(); RSEQ_INJECT_FAILED return -1; cmpfail: + rseq_workaround_gcc_asm_size_guess(); return 1; } -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

1
0
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[Linux-kselftest-mirror] [RFC PATCH v2 for 4.15 12/24] cpu_opv: Implement selftests

by Mathieu Desnoyers

Implement cpu_opv selftests. It needs to express dependencies on header files and .so, which require to override the selftests lib.mk targets. Introduce a new OVERRIDE_TARGETS define for this. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> CC: Russell King <linux(a)arm.linux.org.uk> CC: Catalin Marinas <catalin.marinas(a)arm.com> CC: Will Deacon <will.deacon(a)arm.com> CC: Thomas Gleixner <tglx(a)linutronix.de> CC: Paul Turner <pjt(a)google.com> CC: Andrew Hunter <ahh(a)google.com> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Andy Lutomirski <luto(a)amacapital.net> CC: Andi Kleen <andi(a)firstfloor.org> CC: Dave Watson <davejwatson(a)fb.com> CC: Chris Lameter <cl(a)linux.com> CC: Ingo Molnar <mingo(a)redhat.com> CC: "H. Peter Anvin" <hpa(a)zytor.com> CC: Ben Maurer <bmaurer(a)fb.com> CC: Steven Rostedt <rostedt(a)goodmis.org> CC: "Paul E. McKenney" <paulmck(a)linux.vnet.ibm.com> CC: Josh Triplett <josh(a)joshtriplett.org> CC: Linus Torvalds <torvalds(a)linux-foundation.org> CC: Andrew Morton <akpm(a)linux-foundation.org> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Shuah Khan <shuah(a)kernel.org> CC: linux-kselftest(a)vger.kernel.org CC: linux-api(a)vger.kernel.org --- Changes since v1: - Expose similar library API as rseq: Expose library API closely matching the rseq APIs, following removal of the event counter from the rseq kernel API. - Update makefile to fix make run_tests dependency on "all". - Introduce a OVERRIDE_TARGETS. --- MAINTAINERS | 1 + tools/testing/selftests/Makefile | 1 + tools/testing/selftests/cpu-opv/.gitignore | 1 + tools/testing/selftests/cpu-opv/Makefile | 17 + .../testing/selftests/cpu-opv/basic_cpu_opv_test.c | 1157 ++++++++++++++++++++ tools/testing/selftests/cpu-opv/cpu-op.c | 348 ++++++ tools/testing/selftests/cpu-opv/cpu-op.h | 68 ++ tools/testing/selftests/lib.mk | 4 + 8 files changed, 1597 insertions(+) create mode 100644 tools/testing/selftests/cpu-opv/.gitignore create mode 100644 tools/testing/selftests/cpu-opv/Makefile create mode 100644 tools/testing/selftests/cpu-opv/basic_cpu_opv_test.c create mode 100644 tools/testing/selftests/cpu-opv/cpu-op.c create mode 100644 tools/testing/selftests/cpu-opv/cpu-op.h diff --git a/MAINTAINERS b/MAINTAINERS index 45a1bbdaa287..85a1e8781f56 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3681,6 +3681,7 @@ L: linux-kernel(a)vger.kernel.org S: Supported F: kernel/cpu_opv.c F: include/uapi/linux/cpu_opv.h +F: tools/testing/selftests/cpu-opv/ CRAMFS FILESYSTEM W: http://sourceforge.net/projects/cramfs/ diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index 3c9c0bbe7dbb..c66e5e67cfab 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -4,6 +4,7 @@ TARGETS += breakpoints TARGETS += capabilities TARGETS += cpufreq TARGETS += cpu-hotplug +TARGETS += cpu-opv TARGETS += efivarfs TARGETS += exec TARGETS += firmware diff --git a/tools/testing/selftests/cpu-opv/.gitignore b/tools/testing/selftests/cpu-opv/.gitignore new file mode 100644 index 000000000000..c7186eb95cf5 --- /dev/null +++ b/tools/testing/selftests/cpu-opv/.gitignore @@ -0,0 +1 @@ +basic_cpu_opv_test diff --git a/tools/testing/selftests/cpu-opv/Makefile b/tools/testing/selftests/cpu-opv/Makefile new file mode 100644 index 000000000000..21e63545d521 --- /dev/null +++ b/tools/testing/selftests/cpu-opv/Makefile @@ -0,0 +1,17 @@ +CFLAGS += -O2 -Wall -g -I./ -I../../../../usr/include/ -L./ -Wl,-rpath=./ + +# Own dependencies because we only want to build against 1st prerequisite, but +# still track changes to header files and depend on shared object. +OVERRIDE_TARGETS = 1 + +TEST_GEN_PROGS = basic_cpu_opv_test + +TEST_GEN_PROGS_EXTENDED = libcpu-op.so + +include ../lib.mk + +$(OUTPUT)/libcpu-op.so: cpu-op.c cpu-op.h + $(CC) $(CFLAGS) -shared -fPIC $< -o $@ + +$(OUTPUT)/%: %.c $(TEST_GEN_PROGS_EXTENDED) cpu-op.h + $(CC) $(CFLAGS) $< -lcpu-op -o $@ diff --git a/tools/testing/selftests/cpu-opv/basic_cpu_opv_test.c b/tools/testing/selftests/cpu-opv/basic_cpu_opv_test.c new file mode 100644 index 000000000000..6b624f1939ea --- /dev/null +++ b/tools/testing/selftests/cpu-opv/basic_cpu_opv_test.c @@ -0,0 +1,1157 @@ +/* + * Basic test coverage for cpu_opv system call. + */ + +#define _GNU_SOURCE +#include <assert.h> +#include <sched.h> +#include <signal.h> +#include <stdio.h> +#include <string.h> +#include <sys/time.h> +#include <errno.h> +#include <stdlib.h> + +#include "cpu-op.h" + +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) + +#define TESTBUFLEN 4096 +#define TESTBUFLEN_CMP 16 + +#define TESTBUFLEN_PAGE_MAX 65536 + +static int test_compare_eq_op(char *a, char *b, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, a), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, b), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_compare_eq_same(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_compare_eq same"; + + printf("Testing %s\n", test_name); + + /* Test compare_eq */ + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + for (i = 0; i < TESTBUFLEN; i++) + buf2[i] = (char)i; + ret = test_compare_eq_op(buf2, buf1, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret > 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 0); + return -1; + } + return 0; +} + +static int test_compare_eq_diff(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_compare_eq different"; + + printf("Testing %s\n", test_name); + + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN); + ret = test_compare_eq_op(buf2, buf1, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret == 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 1); + return -1; + } + return 0; +} + +static int test_compare_ne_op(char *a, char *b, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_NE_OP, + .len = len, + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, a), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, b), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_compare_ne_same(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_compare_ne same"; + + printf("Testing %s\n", test_name); + + /* Test compare_ne */ + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + for (i = 0; i < TESTBUFLEN; i++) + buf2[i] = (char)i; + ret = test_compare_ne_op(buf2, buf1, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret == 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 1); + return -1; + } + return 0; +} + +static int test_compare_ne_diff(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_compare_ne different"; + + printf("Testing %s\n", test_name); + + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN); + ret = test_compare_ne_op(buf2, buf1, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 0); + return -1; + } + return 0; +} + +static int test_2compare_eq_op(char *a, char *b, char *c, char *d, + size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, a), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, b), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, c), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, d), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_2compare_eq_index(void) +{ + int i, ret; + char buf1[TESTBUFLEN_CMP]; + char buf2[TESTBUFLEN_CMP]; + char buf3[TESTBUFLEN_CMP]; + char buf4[TESTBUFLEN_CMP]; + const char *test_name = "test_2compare_eq index"; + + printf("Testing %s\n", test_name); + + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN_CMP); + memset(buf3, 0, TESTBUFLEN_CMP); + memset(buf4, 0, TESTBUFLEN_CMP); + + /* First compare failure is op[0], expect 1. */ + ret = test_2compare_eq_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 1) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 1); + return -1; + } + + /* All compares succeed. */ + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf2[i] = (char)i; + ret = test_2compare_eq_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 0); + return -1; + } + + /* First compare failure is op[1], expect 2. */ + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf3[i] = (char)i; + ret = test_2compare_eq_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 2) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 2); + return -1; + } + + return 0; +} + +static int test_2compare_ne_op(char *a, char *b, char *c, char *d, + size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_NE_OP, + .len = len, + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, a), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, b), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_COMPARE_NE_OP, + .len = len, + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.a, c), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.compare_op.b, d), + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_2compare_ne_index(void) +{ + int i, ret; + char buf1[TESTBUFLEN_CMP]; + char buf2[TESTBUFLEN_CMP]; + char buf3[TESTBUFLEN_CMP]; + char buf4[TESTBUFLEN_CMP]; + const char *test_name = "test_2compare_ne index"; + + printf("Testing %s\n", test_name); + + memset(buf1, 0, TESTBUFLEN_CMP); + memset(buf2, 0, TESTBUFLEN_CMP); + memset(buf3, 0, TESTBUFLEN_CMP); + memset(buf4, 0, TESTBUFLEN_CMP); + + /* First compare ne failure is op[0], expect 1. */ + ret = test_2compare_ne_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 1) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 1); + return -1; + } + + /* All compare ne succeed. */ + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf1[i] = (char)i; + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf3[i] = (char)i; + ret = test_2compare_ne_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 0); + return -1; + } + + /* First compare failure is op[1], expect 2. */ + for (i = 0; i < TESTBUFLEN_CMP; i++) + buf4[i] = (char)i; + ret = test_2compare_ne_op(buf2, buf1, buf4, buf3, TESTBUFLEN_CMP); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 2) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 2); + return -1; + } + + return 0; +} + +static int test_memcpy_op(void *dst, void *src, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_MEMCPY_OP, + .len = len, + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src), + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_memcpy(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_memcpy"; + + printf("Testing %s\n", test_name); + + /* Test memcpy */ + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN); + ret = test_memcpy_op(buf2, buf1, TESTBUFLEN); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + for (i = 0; i < TESTBUFLEN; i++) { + if (buf2[i] != (char)i) { + printf("%s failed. Expecting '%d', found '%d' at offset %d\n", + test_name, (char)i, buf2[i], i); + return -1; + } + } + return 0; +} + +static int test_memcpy_u32(void) +{ + int ret; + uint32_t v1, v2; + const char *test_name = "test_memcpy_u32"; + + printf("Testing %s\n", test_name); + + /* Test memcpy_u32 */ + v1 = 42; + v2 = 0; + ret = test_memcpy_op(&v2, &v1, sizeof(v1)); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (v1 != v2) { + printf("%s failed. Expecting '%d', found '%d'\n", + test_name, v1, v2); + return -1; + } + return 0; +} + +static int test_memcpy_mb_memcpy_op(void *dst1, void *src1, + void *dst2, void *src2, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_MEMCPY_OP, + .len = len, + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst1), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src1), + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [1] = { + .op = CPU_MB_OP, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = len, + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst2), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src2), + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_memcpy_mb_memcpy(void) +{ + int ret; + int v1, v2, v3; + const char *test_name = "test_memcpy_mb_memcpy"; + + printf("Testing %s\n", test_name); + + /* Test memcpy */ + v1 = 42; + v2 = v3 = 0; + ret = test_memcpy_mb_memcpy_op(&v2, &v1, &v3, &v2, sizeof(int)); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (v3 != v1) { + printf("%s failed. Expecting '%d', found '%d'\n", + test_name, v1, v3); + return -1; + } + return 0; +} + +static int test_add_op(int *v, int64_t increment) +{ + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_op_add(v, increment, sizeof(*v), cpu); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_add(void) +{ + int orig_v = 42, v, ret; + int increment = 1; + const char *test_name = "test_add"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_add_op(&v, increment); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != orig_v + increment) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v); + return -1; + } + return 0; +} + +static int test_two_add_op(int *v, int64_t *increments) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_ADD_OP, + .len = sizeof(*v), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK( + .u.arithmetic_op.p, v), + .u.arithmetic_op.count = increments[0], + .u.arithmetic_op.expect_fault_p = 0, + }, + [1] = { + .op = CPU_ADD_OP, + .len = sizeof(*v), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK( + .u.arithmetic_op.p, v), + .u.arithmetic_op.count = increments[1], + .u.arithmetic_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_two_add(void) +{ + int orig_v = 42, v, ret; + int64_t increments[2] = { 99, 123 }; + const char *test_name = "test_two_add"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_two_add_op(&v, increments); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != orig_v + increments[0] + increments[1]) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v); + return -1; + } + return 0; +} + +static int test_or_op(int *v, uint64_t mask) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_OR_OP, + .len = sizeof(*v), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK( + .u.bitwise_op.p, v), + .u.bitwise_op.mask = mask, + .u.bitwise_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_or(void) +{ + int orig_v = 0xFF00000, v, ret; + uint32_t mask = 0xFFF; + const char *test_name = "test_or"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_or_op(&v, mask); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v | mask)) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v | mask); + return -1; + } + return 0; +} + +static int test_and_op(int *v, uint64_t mask) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_AND_OP, + .len = sizeof(*v), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK( + .u.bitwise_op.p, v), + .u.bitwise_op.mask = mask, + .u.bitwise_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_and(void) +{ + int orig_v = 0xF00, v, ret; + uint32_t mask = 0xFFF; + const char *test_name = "test_and"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_and_op(&v, mask); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v & mask)) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v & mask); + return -1; + } + return 0; +} + +static int test_xor_op(int *v, uint64_t mask) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_XOR_OP, + .len = sizeof(*v), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK( + .u.bitwise_op.p, v), + .u.bitwise_op.mask = mask, + .u.bitwise_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_xor(void) +{ + int orig_v = 0xF00, v, ret; + uint32_t mask = 0xFFF; + const char *test_name = "test_xor"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_xor_op(&v, mask); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v ^ mask)) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v ^ mask); + return -1; + } + return 0; +} + +static int test_lshift_op(int *v, uint32_t bits) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_LSHIFT_OP, + .len = sizeof(*v), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK( + .u.shift_op.p, v), + .u.shift_op.bits = bits, + .u.shift_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_lshift(void) +{ + int orig_v = 0xF00, v, ret; + uint32_t bits = 5; + const char *test_name = "test_lshift"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_lshift_op(&v, bits); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v << bits)) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v << bits); + return -1; + } + return 0; +} + +static int test_rshift_op(int *v, uint32_t bits) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_RSHIFT_OP, + .len = sizeof(*v), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK( + .u.shift_op.p, v), + .u.shift_op.bits = bits, + .u.shift_op.expect_fault_p = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_rshift(void) +{ + int orig_v = 0xF00, v, ret; + uint32_t bits = 5; + const char *test_name = "test_rshift"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_rshift_op(&v, bits); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v >> bits)) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v >> bits); + return -1; + } + return 0; +} + +static int test_cmpxchg_op(void *v, void *expect, void *old, void *n, + size_t len) +{ + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_op_cmpxchg(v, expect, old, n, len, cpu); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + + +static int test_cmpxchg_success(void) +{ + int ret; + uint64_t orig_v = 1, v, expect = 1, old = 0, n = 3; + const char *test_name = "test_cmpxchg success"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_cmpxchg_op(&v, &expect, &old, &n, sizeof(uint64_t)); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 0); + return -1; + } + if (v != n) { + printf("%s v is %lld, expecting %lld\n", + test_name, (long long)v, (long long)n); + return -1; + } + if (old != orig_v) { + printf("%s old is %lld, expecting %lld\n", + test_name, (long long)old, (long long)orig_v); + return -1; + } + return 0; +} + +static int test_cmpxchg_fail(void) +{ + int ret; + uint64_t orig_v = 1, v, expect = 123, old = 0, n = 3; + const char *test_name = "test_cmpxchg fail"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_cmpxchg_op(&v, &expect, &old, &n, sizeof(uint64_t)); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret == 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 1); + return -1; + } + if (v == n) { + printf("%s v is %lld, expecting %lld\n", + test_name, (long long)v, (long long)orig_v); + return -1; + } + if (old != orig_v) { + printf("%s old is %lld, expecting %lld\n", + test_name, (long long)old, (long long)orig_v); + return -1; + } + return 0; +} + +static int test_memcpy_expect_fault_op(void *dst, void *src, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_MEMCPY_OP, + .len = len, + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src), + .u.memcpy_op.expect_fault_dst = 0, + /* Return EAGAIN on fault. */ + .u.memcpy_op.expect_fault_src = 1, + }, + }; + int cpu; + + cpu = cpu_op_get_current_cpu(); + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +static int test_memcpy_fault(void) +{ + int ret; + char buf1[TESTBUFLEN]; + const char *test_name = "test_memcpy_fault"; + + printf("Testing %s\n", test_name); + + /* Test memcpy */ + ret = test_memcpy_op(buf1, NULL, TESTBUFLEN); + if (!ret || (ret < 0 && errno != EFAULT)) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + /* Test memcpy expect fault */ + ret = test_memcpy_expect_fault_op(buf1, NULL, TESTBUFLEN); + if (!ret || (ret < 0 && errno != EAGAIN)) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + return 0; +} + +static int do_test_unknown_op(void) +{ + struct cpu_op opvec[] = { + [0] = { + .op = -1, /* Unknown */ + .len = 0, + }, + }; + int cpu; + + cpu = cpu_op_get_current_cpu(); + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +static int test_unknown_op(void) +{ + int ret; + const char *test_name = "test_unknown_op"; + + printf("Testing %s\n", test_name); + + ret = do_test_unknown_op(); + if (!ret || (ret < 0 && errno != EINVAL)) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + return 0; +} + +static int do_test_max_ops(void) +{ + struct cpu_op opvec[] = { + [0] = { .op = CPU_MB_OP, }, + [1] = { .op = CPU_MB_OP, }, + [2] = { .op = CPU_MB_OP, }, + [3] = { .op = CPU_MB_OP, }, + [4] = { .op = CPU_MB_OP, }, + [5] = { .op = CPU_MB_OP, }, + [6] = { .op = CPU_MB_OP, }, + [7] = { .op = CPU_MB_OP, }, + [8] = { .op = CPU_MB_OP, }, + [9] = { .op = CPU_MB_OP, }, + [10] = { .op = CPU_MB_OP, }, + [11] = { .op = CPU_MB_OP, }, + [12] = { .op = CPU_MB_OP, }, + [13] = { .op = CPU_MB_OP, }, + [14] = { .op = CPU_MB_OP, }, + [15] = { .op = CPU_MB_OP, }, + }; + int cpu; + + cpu = cpu_op_get_current_cpu(); + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +static int test_max_ops(void) +{ + int ret; + const char *test_name = "test_max_ops"; + + printf("Testing %s\n", test_name); + + ret = do_test_max_ops(); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + return 0; +} + +static int do_test_too_many_ops(void) +{ + struct cpu_op opvec[] = { + [0] = { .op = CPU_MB_OP, }, + [1] = { .op = CPU_MB_OP, }, + [2] = { .op = CPU_MB_OP, }, + [3] = { .op = CPU_MB_OP, }, + [4] = { .op = CPU_MB_OP, }, + [5] = { .op = CPU_MB_OP, }, + [6] = { .op = CPU_MB_OP, }, + [7] = { .op = CPU_MB_OP, }, + [8] = { .op = CPU_MB_OP, }, + [9] = { .op = CPU_MB_OP, }, + [10] = { .op = CPU_MB_OP, }, + [11] = { .op = CPU_MB_OP, }, + [12] = { .op = CPU_MB_OP, }, + [13] = { .op = CPU_MB_OP, }, + [14] = { .op = CPU_MB_OP, }, + [15] = { .op = CPU_MB_OP, }, + [16] = { .op = CPU_MB_OP, }, + }; + int cpu; + + cpu = cpu_op_get_current_cpu(); + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +static int test_too_many_ops(void) +{ + int ret; + const char *test_name = "test_too_many_ops"; + + printf("Testing %s\n", test_name); + + ret = do_test_too_many_ops(); + if (!ret || (ret < 0 && errno != EINVAL)) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + return 0; +} + +/* Use 64kB len, largest page size known on Linux. */ +static int test_memcpy_single_too_large(void) +{ + int i, ret; + char buf1[TESTBUFLEN_PAGE_MAX + 1]; + char buf2[TESTBUFLEN_PAGE_MAX + 1]; + const char *test_name = "test_memcpy_single_too_large"; + + printf("Testing %s\n", test_name); + + /* Test memcpy */ + for (i = 0; i < TESTBUFLEN_PAGE_MAX + 1; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN_PAGE_MAX + 1); + ret = test_memcpy_op(buf2, buf1, TESTBUFLEN_PAGE_MAX + 1); + if (!ret || (ret < 0 && errno != EINVAL)) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + return 0; +} + +static int test_memcpy_single_ok_sum_too_large_op(void *dst, void *src, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_MEMCPY_OP, + .len = len, + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src), + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = len, + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.dst, dst), + CPU_OP_FIELD_u32_u64_INIT_ONSTACK(.u.memcpy_op.src, src), + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_memcpy_single_ok_sum_too_large(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_memcpy_single_ok_sum_too_large"; + + printf("Testing %s\n", test_name); + + /* Test memcpy */ + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN); + ret = test_memcpy_single_ok_sum_too_large_op(buf2, buf1, TESTBUFLEN); + if (!ret || (ret < 0 && errno != EINVAL)) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + return 0; +} + +int main(int argc, char **argv) +{ + int ret = 0; + + ret |= test_compare_eq_same(); + ret |= test_compare_eq_diff(); + ret |= test_compare_ne_same(); + ret |= test_compare_ne_diff(); + ret |= test_2compare_eq_index(); + ret |= test_2compare_ne_index(); + ret |= test_memcpy(); + ret |= test_memcpy_u32(); + ret |= test_memcpy_mb_memcpy(); + ret |= test_add(); + ret |= test_two_add(); + ret |= test_or(); + ret |= test_and(); + ret |= test_xor(); + ret |= test_lshift(); + ret |= test_rshift(); + ret |= test_cmpxchg_success(); + ret |= test_cmpxchg_fail(); + ret |= test_memcpy_fault(); + ret |= test_unknown_op(); + ret |= test_max_ops(); + ret |= test_too_many_ops(); + ret |= test_memcpy_single_too_large(); + ret |= test_memcpy_single_ok_sum_too_large(); + + return ret; +} diff --git a/tools/testing/selftests/cpu-opv/cpu-op.c b/tools/testing/selftests/cpu-opv/cpu-op.c new file mode 100644 index 000000000000..d7ba481cca04 --- /dev/null +++ b/tools/testing/selftests/cpu-opv/cpu-op.c @@ -0,0 +1,348 @@ +/* + * cpu-op.c + * + * Copyright (C) 2017 Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; only + * version 2.1 of the License. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + */ + +#define _GNU_SOURCE +#include <errno.h> +#include <sched.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <syscall.h> +#include <assert.h> +#include <signal.h> + +#include "cpu-op.h" + +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) + +int cpu_opv(struct cpu_op *cpu_opv, int cpuopcnt, int cpu, int flags) +{ + return syscall(__NR_cpu_opv, cpu_opv, cpuopcnt, cpu, flags); +} + +int cpu_op_get_current_cpu(void) +{ + int cpu; + + cpu = sched_getcpu(); + if (cpu < 0) { + perror("sched_getcpu()"); + abort(); + } + return cpu; +} + +int cpu_op_cmpxchg(void *v, void *expect, void *old, void *n, + size_t len, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)old, + .u.memcpy_op.src = (unsigned long)v, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [1] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)n, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_add(void *v, int64_t count, size_t len, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_ADD_OP, + .len = len, + .u.arithmetic_op.p = (unsigned long)v, + .u.arithmetic_op.count = count, + .u.arithmetic_op.expect_fault_p = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, + int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +static int cpu_op_cmpeqv_storep_expect_fault(intptr_t *v, intptr_t expect, + intptr_t *newp, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)newp, + .u.memcpy_op.expect_fault_dst = 0, + /* Return EAGAIN on src fault. */ + .u.memcpy_op.expect_fault_src = 1, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot, + off_t voffp, intptr_t *load, int cpu) +{ + intptr_t oldv = READ_ONCE(*v); + intptr_t *newp = (intptr_t *)(oldv + voffp); + int ret; + + if (oldv == expectnot) + return 1; + ret = cpu_op_cmpeqv_storep_expect_fault(v, oldv, newp, cpu); + if (!ret) { + *load = oldv; + return 0; + } + if (ret > 0) { + errno = EAGAIN; + return -1; + } + return -1; +} + +int cpu_op_cmpeqv_storev_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t newv2, intptr_t newv, + int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v2, + .u.memcpy_op.src = (unsigned long)&newv2, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpeqv_storev_mb_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t newv2, intptr_t newv, + int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v2, + .u.memcpy_op.src = (unsigned long)&newv2, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [2] = { + .op = CPU_MB_OP, + }, + [3] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t expect2, intptr_t newv, + int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v2, + .u.compare_op.b = (unsigned long)&expect2, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpeqv_memcpy_storev(intptr_t *v, intptr_t expect, + void *dst, void *src, size_t len, intptr_t newv, + int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)dst, + .u.memcpy_op.src = (unsigned long)src, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpeqv_memcpy_mb_storev(intptr_t *v, intptr_t expect, + void *dst, void *src, size_t len, intptr_t newv, + int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = sizeof(intptr_t), + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)&expect, + .u.compare_op.expect_fault_a = 0, + .u.compare_op.expect_fault_b = 0, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)dst, + .u.memcpy_op.src = (unsigned long)src, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + [2] = { + .op = CPU_MB_OP, + }, + [3] = { + .op = CPU_MEMCPY_OP, + .len = sizeof(intptr_t), + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)&newv, + .u.memcpy_op.expect_fault_dst = 0, + .u.memcpy_op.expect_fault_src = 0, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_addv(intptr_t *v, int64_t count, int cpu) +{ + return cpu_op_add(v, count, sizeof(intptr_t), cpu); +} diff --git a/tools/testing/selftests/cpu-opv/cpu-op.h b/tools/testing/selftests/cpu-opv/cpu-op.h new file mode 100644 index 000000000000..ba2ec578ec50 --- /dev/null +++ b/tools/testing/selftests/cpu-opv/cpu-op.h @@ -0,0 +1,68 @@ +/* + * cpu-op.h + * + * (C) Copyright 2017 - Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef CPU_OPV_H +#define CPU_OPV_H + +#include <stdlib.h> +#include <stdint.h> +#include <linux/cpu_opv.h> + +#define likely(x) __builtin_expect(!!(x), 1) +#define unlikely(x) __builtin_expect(!!(x), 0) +#define barrier() __asm__ __volatile__("" : : : "memory") + +#define ACCESS_ONCE(x) (*(__volatile__ __typeof__(x) *)&(x)) +#define WRITE_ONCE(x, v) __extension__ ({ ACCESS_ONCE(x) = (v); }) +#define READ_ONCE(x) ACCESS_ONCE(x) + +int cpu_opv(struct cpu_op *cpuopv, int cpuopcnt, int cpu, int flags); +int cpu_op_get_current_cpu(void); + +int cpu_op_cmpxchg(void *v, void *expect, void *old, void *_new, + size_t len, int cpu); +int cpu_op_add(void *v, int64_t count, size_t len, int cpu); + +int cpu_op_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, + int cpu); +int cpu_op_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot, + off_t voffp, intptr_t *load, int cpu); +int cpu_op_cmpeqv_storev_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t newv2, intptr_t newv, + int cpu); +int cpu_op_cmpeqv_storev_mb_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t newv2, intptr_t newv, + int cpu); +int cpu_op_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect, + intptr_t *v2, intptr_t expect2, intptr_t newv, + int cpu); +int cpu_op_cmpeqv_memcpy_storev(intptr_t *v, intptr_t expect, + void *dst, void *src, size_t len, intptr_t newv, + int cpu); +int cpu_op_cmpeqv_memcpy_mb_storev(intptr_t *v, intptr_t expect, + void *dst, void *src, size_t len, intptr_t newv, + int cpu); +int cpu_op_addv(intptr_t *v, int64_t count, int cpu); + +#endif /* CPU_OPV_H_ */ diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk index 5bef05d6ba39..441d7bc63bb7 100644 --- a/tools/testing/selftests/lib.mk +++ b/tools/testing/selftests/lib.mk @@ -105,6 +105,9 @@ COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) endif +# Selftest makefiles can override those targets by setting +# OVERRIDE_TARGETS = 1. +ifeq ($(OVERRIDE_TARGETS),) $(OUTPUT)/%:%.c $(LINK.c) $^ $(LDLIBS) -o $@ @@ -113,5 +116,6 @@ $(OUTPUT)/%.o:%.S $(OUTPUT)/%:%.S $(LINK.S) $^ $(LDLIBS) -o $@ +endif .PHONY: run_tests all clean install emit_tests -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

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Re: [Linux-kselftest-mirror] [PATCH v9 23/51] powerpc: Enable pkey subsystem

by Ram Pai

On Mon, Nov 06, 2017 at 12:57:15AM -0800, Ram Pai wrote: > PAPR defines 'ibm,processor-storage-keys' property. It exports two > values. The first value holds the number of data-access keys and the > second holds the number of instruction-access keys. Due to a bug in > the firmware, instruction-access keys is always reported as zero. > However any key can be configured to disable data-access and/or disable > execution-access. The inavailablity of the second value is not a > big handicap, though it could have been used to determine if the > platform supported disable-execution-access. > > Non PAPR platforms do not define this property in the device tree yet. > Here, we hardcode CPUs that support pkey by consulting > PowerISA3.0 > > This patch calculates the number of keys supported by the platform. > Alsi it determines the platform support for read/write/execution access > support for pkeys. > > Signed-off-by: Ram Pai <linuxram(a)us.ibm.com> > --- > ....snip... > +static inline bool pkey_mmu_enabled(void) > +{ > + if (firmware_has_feature(FW_FEATURE_LPAR)) > + return pkeys_total; > + else > + return cpu_has_feature(CPU_FTR_PKEY); > +} > + > void __init pkey_initialize(void) > { > int os_reserved, i; > @@ -46,14 +54,9 @@ void __init pkey_initialize(void) > __builtin_popcountl(ARCH_VM_PKEY_FLAGS >> VM_PKEY_SHIFT) > != (sizeof(u64) * BITS_PER_BYTE)); > > - /* > - * Disable the pkey system till everything is in place. A subsequent > - * patch will enable it. > - */ > - static_branch_enable(&pkey_disabled); > - > - /* Lets assume 32 keys */ > - pkeys_total = 32; vvvvvvvvvvvvvvvvvvvv > + /* Let's assume 32 keys if we are not told the number of pkeys. */ > + if (!pkeys_total) > + pkeys_total = 32; ^^^^^^^^^^^^^^^^^^^^ There is a small bug here. On a KVM guest or a LPAR, if the device tree does not expose pkeys, the pkey-subsystem must be disabled. Unfortunately, the code above blindly sets the pkeys_total to 32. This confuses pkey_mmu_enabled() into returning true. Because of this bug the guest errorneously enables pkey-subsystem. The fix is to delete the code marked above. > > /* > * Adjust the upper limit, based on the number of bits supported by > @@ -62,11 +65,19 @@ void __init pkey_initialize(void) > pkeys_total = min_t(int, pkeys_total, > (ARCH_VM_PKEY_FLAGS >> VM_PKEY_SHIFT)); > > + if (!pkey_mmu_enabled() || radix_enabled() || !pkeys_total) > + static_branch_enable(&pkey_disabled); > + else > + static_branch_disable(&pkey_disabled); > + RP -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

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0 0

Re: [Linux-kselftest-mirror] [PATCH v9 00/51] powerpc, mm: Memory Protection Keys

by Christophe LEROY

Hi Le 06/11/2017 à 09:56, Ram Pai a écrit : > Memory protection keys enable applications to protect its > address space from inadvertent access from or corruption > by itself. > > These patches along with the pte-bit freeing patch series > enables the protection key feature on powerpc; 4k and 64k > hashpage kernels. It also changes the generic and x86 > code to expose memkey features through sysfs. Finally > testcases and Documentation is updated. > > All patches can be found at -- > https://github.com/rampai/memorykeys.git memkey.v9 As far as I can see you are focussing the implementation on 64 bits powerpc. This could also be implemented on 32 bits powerpc, for instance the 8xx has MMU Access Protection Registers which can be used to define 16 domains and could I think be used for implementing protection keys. Of course the challenge after that would be to find 4 spare PTE bits, I'm sure we can find them on the 8xx, at least when using 16k pages we have 2 bits already available, then by merging PAGE_SHARED and PAGE_USER and by reducing PAGE_RO to only one bit we can get the 4 spare bits. Therefore I think it would be great if you could implement a framework common to both PPC32 and PPC64. Christophe > > The overall idea: > ----------------- > A process allocates a key and associates it with > an address range within its address space. > The process then can dynamically set read/write > permissions on the key without involving the > kernel. Any code that violates the permissions > of the address space; as defined by its associated > key, will receive a segmentation fault. > > This patch series enables the feature on PPC64 HPTE > platform. > > ISA3.0 section 5.7.13 describes the detailed > specifications. > > > Highlevel view of the design: > --------------------------- > When an application associates a key with a address > address range, program the key in the Linux PTE. > When the MMU detects a page fault, allocate a hash > page and program the key into HPTE. And finally > when the MMU detects a key violation; due to > invalid application access, invoke the registered > signal handler and provide the violated key number. > > > Testing: > ------- > This patch series has passed all the protection key > tests available in the selftest directory.The > tests are updated to work on both x86 and powerpc. > The selftests have passed on x86 and powerpc hardware. > > History: > ------- > version v9: > (1) used jump-labels to optimize code > -- Balbir > (2) fixed a register initialization bug noted > by Balbir > (3) fixed inappropriate use of paca to pass > siginfo and keys to signal handler > (4) Cleanup of comment style not to be right > justified -- mpe > (5) restructured the patches to depend on the > availability of VM_PKEY_BIT4 in > include/linux/mm.h > (6) Incorporated comments from Dave Hansen > towards changes to selftest and got > them tested on x86. > > version v8: > (1) Contents of the AMR register withdrawn from > the siginfo structure. Applications can always > read the AMR register. > (2) AMR/IAMR/UAMOR are now available through > ptrace system call. -- thanks to Thiago > (3) code changes to handle legacy power cpus > that do not support execute-disable. > (4) incorporates many code improvement > suggestions. > > version v7: > (1) refers to device tree property to enable > protection keys. > (2) adds 4K PTE support. > (3) fixes a couple of bugs noticed by Thiago > (4) decouples this patch series from arch- > independent code. This patch series can > now stand by itself, with one kludge > patch(2). > version v7: > (1) refers to device tree property to enable > protection keys. > (2) adds 4K PTE support. > (3) fixes a couple of bugs noticed by Thiago > (4) decouples this patch series from arch- > independent code. This patch series can > now stand by itself, with one kludge > patch(2). > > version v6: > (1) selftest changes are broken down into 20 > incremental patches. > (2) A separate key allocation mask that > includes PKEY_DISABLE_EXECUTE is > added for powerpc > (3) pkey feature is enabled for 64K HPT case > only. RPT and 4k HPT is disabled. > (4) Documentation is updated to better > capture the semantics. > (5) introduced arch_pkeys_enabled() to find > if an arch enables pkeys. Correspond- > ing change the logic that displays > key value in smaps. > (6) code rearranged in many places based on > comments from Dave Hansen, Balbir, > Anshuman. > (7) fixed one bug where a bogus key could be > associated successfully in > pkey_mprotect(). > > version v5: > (1) reverted back to the old design -- store > the key in the pte, instead of bypassing > it. The v4 design slowed down the hash > page path. > (2) detects key violation when kernel is told > to access user pages. > (3) further refined the patches into smaller > consumable units > (4) page faults handlers captures the fault- > ing key > from the pte instead of the vma. This > closes a race between where the key > update in the vma and a key fault caused > by the key programmed in the pte. > (5) a key created with access-denied should > also set it up to deny write. Fixed it. > (6) protection-key number is displayed in > smaps the x86 way. > > version v4: > (1) patches no more depend on the pte bits > to program the hpte > -- comment by Balbir > (2) documentation updates > (3) fixed a bug in the selftest. > (4) unlike x86, powerpc lets signal handler > change key permission bits; the > change will persist across signal > handler boundaries. Earlier we > allowed the signal handler to > modify a field in the siginfo > structure which would than be used > by the kernel to program the key > protection register (AMR) > -- resolves a issue raised by Ben. > "Calls to sys_swapcontext with a > made-up context will end up with a > crap AMR if done by code who didn't > know about that register". > (5) these changes enable protection keys on > 4k-page kernel aswell. > > version v3: > (1) split the patches into smaller consumable > patches. > (2) added the ability to disable execute > permission on a key at creation. > (3) rename calc_pte_to_hpte_pkey_bits() to > pte_to_hpte_pkey_bits() > -- suggested by Anshuman > (4) some code optimization and clarity in > do_page_fault() > (5) A bug fix while invalidating a hpte slot > in __hash_page_4K() > -- noticed by Aneesh > > > version v2: > (1) documentation and selftest added. > (2) fixed a bug in 4k hpte backed 64k pte > where page invalidation was not > done correctly, and initialization > of second-part-of-the-pte was not > done correctly if the pte was not > yet Hashed with a hpte. > -- Reported by Aneesh. > (3) Fixed ABI breakage caused in siginfo > structure. > -- Reported by Anshuman. > > > version v1: Initial version > > Ram Pai (47): > mm, powerpc, x86: define VM_PKEY_BITx bits if CONFIG_ARCH_HAS_PKEYS > is enabled > mm, powerpc, x86: introduce an additional vma bit for powerpc pkey > powerpc: initial pkey plumbing > powerpc: track allocation status of all pkeys > powerpc: helper function to read,write AMR,IAMR,UAMOR registers > powerpc: helper functions to initialize AMR, IAMR and UAMOR registers > powerpc: cleanup AMR, IAMR when a key is allocated or freed > powerpc: implementation for arch_set_user_pkey_access() > powerpc: ability to create execute-disabled pkeys > powerpc: store and restore the pkey state across context switches > powerpc: introduce execute-only pkey > powerpc: ability to associate pkey to a vma > powerpc: implementation for arch_override_mprotect_pkey() > powerpc: map vma key-protection bits to pte key bits. > powerpc: Program HPTE key protection bits > powerpc: helper to validate key-access permissions of a pte > powerpc: check key protection for user page access > powerpc: implementation for arch_vma_access_permitted() > powerpc: Handle exceptions caused by pkey violation > powerpc: introduce get_mm_addr_key() helper > powerpc: Deliver SEGV signal on pkey violation > powerpc: Enable pkey subsystem > powerpc: sys_pkey_alloc() and sys_pkey_free() system calls > powerpc: sys_pkey_mprotect() system call > powerpc: add sys_pkey_modify() system call > mm, x86 : introduce arch_pkeys_enabled() > mm: display pkey in smaps if arch_pkeys_enabled() is true > Documentation/x86: Move protecton key documentation to arch neutral > directory > Documentation/vm: PowerPC specific updates to memory protection keys > selftest/x86: Move protecton key selftest to arch neutral directory > selftest/vm: rename all references to pkru to a generic name > selftest/vm: move generic definitions to header file > selftest/vm: typecast the pkey register > selftest/vm: generic function to handle shadow key register > selftest/vm: fix the wrong assert in pkey_disable_set() > selftest/vm: fixed bugs in pkey_disable_clear() > selftest/vm: clear the bits in shadow reg when a pkey is freed. > selftest/vm: fix alloc_random_pkey() to make it really random > selftest/vm: introduce two arch independent abstraction > selftest/vm: pkey register should match shadow pkey > selftest/vm: generic cleanup > selftest/vm: powerpc implementation for generic abstraction > selftest/vm: fix an assertion in test_pkey_alloc_exhaust() > selftest/vm: associate key on a mapped page and detect access > violation > selftest/vm: associate key on a mapped page and detect write > violation > selftest/vm: detect write violation on a mapped access-denied-key > page > selftest/vm: sub-page allocator > > Thiago Jung Bauermann (4): > powerpc/ptrace: Add memory protection key regset > mm/mprotect, powerpc/mm/pkeys, x86/mm/pkeys: Add sysfs interface > selftests/powerpc: Add ptrace tests for Protection Key register > selftests/powerpc: Add core file test for Protection Key register > > Documentation/vm/protection-keys.txt | 161 +++ > Documentation/x86/protection-keys.txt | 85 -- > arch/powerpc/Kconfig | 15 + > arch/powerpc/include/asm/book3s/64/mmu-hash.h | 5 + > arch/powerpc/include/asm/book3s/64/mmu.h | 10 + > arch/powerpc/include/asm/book3s/64/pgtable.h | 42 +- > arch/powerpc/include/asm/bug.h | 1 + > arch/powerpc/include/asm/cputable.h | 15 +- > arch/powerpc/include/asm/mman.h | 13 +- > arch/powerpc/include/asm/mmu.h | 9 + > arch/powerpc/include/asm/mmu_context.h | 24 + > arch/powerpc/include/asm/pkeys.h | 247 ++++ > arch/powerpc/include/asm/processor.h | 5 + > arch/powerpc/include/asm/systbl.h | 4 + > arch/powerpc/include/asm/unistd.h | 6 +- > arch/powerpc/include/uapi/asm/elf.h | 1 + > arch/powerpc/include/uapi/asm/mman.h | 6 + > arch/powerpc/include/uapi/asm/unistd.h | 4 + > arch/powerpc/kernel/entry_64.S | 9 + > arch/powerpc/kernel/process.c | 7 + > arch/powerpc/kernel/prom.c | 18 + > arch/powerpc/kernel/ptrace.c | 66 + > arch/powerpc/kernel/traps.c | 19 +- > arch/powerpc/mm/Makefile | 1 + > arch/powerpc/mm/fault.c | 49 +- > arch/powerpc/mm/hash_utils_64.c | 29 + > arch/powerpc/mm/mmu_context_book3s64.c | 2 + > arch/powerpc/mm/pkeys.c | 463 +++++++ > arch/x86/include/asm/mmu_context.h | 4 +- > arch/x86/include/asm/pkeys.h | 2 + > arch/x86/kernel/fpu/xstate.c | 5 + > arch/x86/kernel/setup.c | 8 - > arch/x86/mm/pkeys.c | 9 + > fs/proc/task_mmu.c | 16 +- > include/linux/mm.h | 12 +- > include/linux/pkeys.h | 7 +- > include/uapi/linux/elf.h | 1 + > mm/mprotect.c | 88 ++ > tools/testing/selftests/powerpc/include/reg.h | 1 + > tools/testing/selftests/powerpc/ptrace/Makefile | 5 +- > tools/testing/selftests/powerpc/ptrace/core-pkey.c | 438 ++++++ > .../testing/selftests/powerpc/ptrace/ptrace-pkey.c | 443 ++++++ > tools/testing/selftests/vm/Makefile | 1 + > tools/testing/selftests/vm/pkey-helpers.h | 405 ++++++ > tools/testing/selftests/vm/protection_keys.c | 1464 ++++++++++++++++++++ > tools/testing/selftests/x86/Makefile | 2 +- > tools/testing/selftests/x86/pkey-helpers.h | 220 --- > tools/testing/selftests/x86/protection_keys.c | 1395 ------------------- > 48 files changed, 4095 insertions(+), 1747 deletions(-) > create mode 100644 Documentation/vm/protection-keys.txt > delete mode 100644 Documentation/x86/protection-keys.txt > create mode 100644 arch/powerpc/include/asm/pkeys.h > create mode 100644 arch/powerpc/mm/pkeys.c > create mode 100644 tools/testing/selftests/powerpc/ptrace/core-pkey.c > create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-pkey.c > create mode 100644 tools/testing/selftests/vm/pkey-helpers.h > create mode 100644 tools/testing/selftests/vm/protection_keys.c > delete mode 100644 tools/testing/selftests/x86/pkey-helpers.h > delete mode 100644 tools/testing/selftests/x86/protection_keys.c > -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

2
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[Linux-kselftest-mirror] [RFC PATCH for 4.15 10/10] membarrier: selftest: Test shared expedited cmd

by Mathieu Desnoyers

Test the new MEMBARRIER_CMD_SHARED_EXPEDITED and MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED commands. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> CC: Shuah Khan <shuahkh(a)osg.samsung.com> CC: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Andrew Hunter <ahh(a)google.com> CC: Maged Michael <maged.michael(a)gmail.com> CC: Avi Kivity <avi(a)scylladb.com> CC: Benjamin Herrenschmidt <benh(a)kernel.crashing.org> CC: Paul Mackerras <paulus(a)samba.org> CC: Michael Ellerman <mpe(a)ellerman.id.au> CC: Dave Watson <davejwatson(a)fb.com> CC: Alan Stern <stern(a)rowland.harvard.edu> CC: Will Deacon <will.deacon(a)arm.com> CC: Andy Lutomirski <luto(a)kernel.org> CC: Alice Ferrazzi <alice.ferrazzi(a)gmail.com> CC: Paul Elder <paul.elder(a)pitt.edu> CC: linux-kselftest(a)vger.kernel.org CC: linux-arch(a)vger.kernel.org --- .../testing/selftests/membarrier/membarrier_test.c | 47 ++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c index a0eae8d51e72..c699227f4d9a 100644 --- a/tools/testing/selftests/membarrier/membarrier_test.c +++ b/tools/testing/selftests/membarrier/membarrier_test.c @@ -189,6 +189,40 @@ static int test_membarrier_private_expedited_sync_core_success(void) return 0; } +static int test_membarrier_register_shared_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + +static int test_membarrier_shared_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_SHARED_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_SHARED_EXPEDITED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + static int test_membarrier(void) { int status; @@ -227,6 +261,19 @@ static int test_membarrier(void) if (status) return status; } + /* + * It is valid to send a shared membarrier from a non-registered + * process. + */ + status = test_membarrier_shared_expedited_success(); + if (status) + return status; + status = test_membarrier_register_shared_expedited_success(); + if (status) + return status; + status = test_membarrier_shared_expedited_success(); + if (status) + return status; return 0; } -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

1
0
0 0

[Linux-kselftest-mirror] [RFC PATCH for 4.15 08/10] membarrier: selftest: Test private expedited sync core cmd

by Mathieu Desnoyers

Test the new MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE and MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE commands. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> CC: Shuah Khan <shuahkh(a)osg.samsung.com> CC: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Andrew Hunter <ahh(a)google.com> CC: Maged Michael <maged.michael(a)gmail.com> CC: Avi Kivity <avi(a)scylladb.com> CC: Benjamin Herrenschmidt <benh(a)kernel.crashing.org> CC: Paul Mackerras <paulus(a)samba.org> CC: Michael Ellerman <mpe(a)ellerman.id.au> CC: Dave Watson <davejwatson(a)fb.com> CC: Alan Stern <stern(a)rowland.harvard.edu> CC: Will Deacon <will.deacon(a)arm.com> CC: Andy Lutomirski <luto(a)kernel.org> CC: Alice Ferrazzi <alice.ferrazzi(a)gmail.com> CC: Paul Elder <paul.elder(a)pitt.edu> CC: linux-kselftest(a)vger.kernel.org CC: linux-arch(a)vger.kernel.org --- .../testing/selftests/membarrier/membarrier_test.c | 77 +++++++++++++++++++++- 1 file changed, 76 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c index d7543a6d9030..a0eae8d51e72 100644 --- a/tools/testing/selftests/membarrier/membarrier_test.c +++ b/tools/testing/selftests/membarrier/membarrier_test.c @@ -132,6 +132,63 @@ static int test_membarrier_private_expedited_success(void) return 0; } +static int test_membarrier_private_expedited_sync_core_fail(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE not registered failure"; + + if (sys_membarrier(cmd, flags) != -1) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should fail, but passed\n", + test_name, flags); + } + if (errno != EPERM) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EPERM, strerror(EPERM), + errno, strerror(errno)); + } + + ksft_test_result_pass( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + return 0; +} + +static int test_membarrier_register_private_expedited_sync_core_success(void) +{ + int cmd = MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + +static int test_membarrier_private_expedited_sync_core_success(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + static int test_membarrier(void) { int status; @@ -154,6 +211,22 @@ static int test_membarrier(void) status = test_membarrier_private_expedited_success(); if (status) return status; + status = sys_membarrier(MEMBARRIER_CMD_QUERY, 0); + if (status < 0) { + ksft_test_result_fail("sys_membarrier() failed\n"); + return status; + } + if (status & MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE) { + status = test_membarrier_private_expedited_sync_core_fail(); + if (status) + return status; + status = test_membarrier_register_private_expedited_sync_core_success(); + if (status) + return status; + status = test_membarrier_private_expedited_sync_core_success(); + if (status) + return status; + } return 0; } @@ -173,8 +246,10 @@ static int test_membarrier_query(void) } ksft_exit_fail_msg("sys_membarrier() failed\n"); } - if (!(ret & MEMBARRIER_CMD_SHARED)) + if (!(ret & MEMBARRIER_CMD_SHARED)) { + ksft_test_result_fail("sys_membarrier() CMD_SHARED query failed\n"); ksft_exit_fail_msg("sys_membarrier is not supported.\n"); + } ksft_test_result_pass("sys_membarrier available\n"); return 0; -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

1
0
0 0

[Linux-kselftest-mirror] [RFC PATCH for 4.15 01/10] membarrier: selftest: Test private expedited cmd

by Mathieu Desnoyers

Test the new MEMBARRIER_CMD_PRIVATE_EXPEDITED and MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED commands. Add checks expecting specific error values on system calls expected to fail. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Acked-by: Shuah Khan <shuahkh(a)osg.samsung.com> Acked-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Andrew Hunter <ahh(a)google.com> CC: Maged Michael <maged.michael(a)gmail.com> CC: Avi Kivity <avi(a)scylladb.com> CC: Benjamin Herrenschmidt <benh(a)kernel.crashing.org> CC: Paul Mackerras <paulus(a)samba.org> CC: Michael Ellerman <mpe(a)ellerman.id.au> CC: Dave Watson <davejwatson(a)fb.com> CC: Alan Stern <stern(a)rowland.harvard.edu> CC: Will Deacon <will.deacon(a)arm.com> CC: Andy Lutomirski <luto(a)kernel.org> CC: Alice Ferrazzi <alice.ferrazzi(a)gmail.com> CC: Paul Elder <paul.elder(a)pitt.edu> CC: linux-kselftest(a)vger.kernel.org CC: linux-arch(a)vger.kernel.org --- .../testing/selftests/membarrier/membarrier_test.c | 109 ++++++++++++++++++--- 1 file changed, 94 insertions(+), 15 deletions(-) diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c index 9e674d9514d1..d7543a6d9030 100644 --- a/tools/testing/selftests/membarrier/membarrier_test.c +++ b/tools/testing/selftests/membarrier/membarrier_test.c @@ -16,49 +16,119 @@ static int sys_membarrier(int cmd, int flags) static int test_membarrier_cmd_fail(void) { int cmd = -1, flags = 0; + const char *test_name = "sys membarrier invalid command"; if (sys_membarrier(cmd, flags) != -1) { ksft_exit_fail_msg( - "sys membarrier invalid command test: command = %d, flags = %d. Should fail, but passed\n", - cmd, flags); + "%s test: command = %d, flags = %d. Should fail, but passed\n", + test_name, cmd, flags); + } + if (errno != EINVAL) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EINVAL, strerror(EINVAL), + errno, strerror(errno)); } ksft_test_result_pass( - "sys membarrier invalid command test: command = %d, flags = %d. Failed as expected\n", - cmd, flags); + "%s test: command = %d, flags = %d, errno = %d. Failed as expected\n", + test_name, cmd, flags, errno); return 0; } static int test_membarrier_flags_fail(void) { int cmd = MEMBARRIER_CMD_QUERY, flags = 1; + const char *test_name = "sys membarrier MEMBARRIER_CMD_QUERY invalid flags"; if (sys_membarrier(cmd, flags) != -1) { ksft_exit_fail_msg( - "sys membarrier MEMBARRIER_CMD_QUERY invalid flags test: flags = %d. Should fail, but passed\n", - flags); + "%s test: flags = %d. Should fail, but passed\n", + test_name, flags); + } + if (errno != EINVAL) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EINVAL, strerror(EINVAL), + errno, strerror(errno)); } ksft_test_result_pass( - "sys membarrier MEMBARRIER_CMD_QUERY invalid flags test: flags = %d. Failed as expected\n", - flags); + "%s test: flags = %d, errno = %d. Failed as expected\n", + test_name, flags, errno); return 0; } -static int test_membarrier_success(void) +static int test_membarrier_shared_success(void) { int cmd = MEMBARRIER_CMD_SHARED, flags = 0; - const char *test_name = "sys membarrier MEMBARRIER_CMD_SHARED\n"; + const char *test_name = "sys membarrier MEMBARRIER_CMD_SHARED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", test_name, flags); + return 0; +} + +static int test_membarrier_private_expedited_fail(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED not registered failure"; + + if (sys_membarrier(cmd, flags) != -1) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should fail, but passed\n", + test_name, flags); + } + if (errno != EPERM) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EPERM, strerror(EPERM), + errno, strerror(errno)); + } + + ksft_test_result_pass( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + return 0; +} + +static int test_membarrier_register_private_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED"; if (sys_membarrier(cmd, flags) != 0) { ksft_exit_fail_msg( - "sys membarrier MEMBARRIER_CMD_SHARED test: flags = %d\n", - flags); + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); } ksft_test_result_pass( - "sys membarrier MEMBARRIER_CMD_SHARED test: flags = %d\n", - flags); + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + +static int test_membarrier_private_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); return 0; } @@ -72,7 +142,16 @@ static int test_membarrier(void) status = test_membarrier_flags_fail(); if (status) return status; - status = test_membarrier_success(); + status = test_membarrier_shared_success(); + if (status) + return status; + status = test_membarrier_private_expedited_fail(); + if (status) + return status; + status = test_membarrier_register_private_expedited_success(); + if (status) + return status; + status = test_membarrier_private_expedited_success(); if (status) return status; return 0; -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

1
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Re: [Linux-kselftest-mirror] [PATCH v9 44/51] selftest/vm: powerpc implementation for generic abstraction

by Breno Leitao

Hi Ram, On Mon, Nov 06, 2017 at 12:57:36AM -0800, Ram Pai wrote: > @@ -206,12 +209,14 @@ void signal_handler(int signum, siginfo_t *si, void *vucontext) > > trapno = uctxt->uc_mcontext.gregs[REG_TRAPNO]; > ip = uctxt->uc_mcontext.gregs[REG_IP_IDX]; > - fpregset = uctxt->uc_mcontext.fpregs; > - fpregs = (void *)fpregset; Since you removed all references for fpregset now, you probably want to remove the declaration of the variable above. > @@ -219,20 +224,21 @@ void signal_handler(int signum, siginfo_t *si, void *vucontext) > * state. We just assume that it is here. > */ > fpregs += 0x70; > -#endif > - pkey_reg_offset = pkey_reg_xstate_offset(); With this code, you removed all the reference for variable pkey_reg_offset, thus, its declaration could be removed also. > - *(u64 *)pkey_reg_ptr = 0x00000000; > + dprintf1("si_pkey from siginfo: %lx\n", si_pkey); > +#if defined(__i386__) || defined(__x86_64__) /* arch */ > + dprintf1("signal pkey_reg from xsave: %016lx\n", *pkey_reg_ptr); > + *(u64 *)pkey_reg_ptr &= reset_bits(si_pkey, PKEY_DISABLE_ACCESS); > +#elif __powerpc64__ Since the variable pkey_reg_ptr is only used for Intel code (inside #ifdefs), you probably want to #ifdef the variable declaration also, avoid triggering "unused variable" warning on non-Intel machines. -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

2
2
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Re: [Linux-kselftest-mirror] [PATCH v9 00/51] powerpc, mm: Memory Protection Keys

by Ram Pai

On Mon, Nov 06, 2017 at 05:22:18PM -0800, Ram Pai wrote: > On Mon, Nov 06, 2017 at 10:28:41PM +0100, Florian Weimer wrote: > > * Ram Pai: > > > > > Testing: > > > ------- > > > This patch series has passed all the protection key > > > tests available in the selftest directory.The > > > tests are updated to work on both x86 and powerpc. > > > The selftests have passed on x86 and powerpc hardware. > > ....snip.... > > What about siglongjmp from a signal handler? > > On powerpc there is some relief. the permissions on a key can be > modified from anywhere, including from the signal handler, and the > effect will be immediate. You dont have to wait till the > signal handler returns for the key permissions to be restore. > > also after return from the sigsetjmp(); > possibly caused by siglongjmp(), the program can restore the permission > on any key. > > Atleast that is my theory. Can you give me a testcase; if you have one > handy. > > > > > <https://sourceware.org/bugzilla/show_bug.cgi?id=22396> > > reading through the bug report, you mention that the following "The application may not be able to save and restore the protection bits for all keys because the kernel API does not actually specify that the set of keys is a small, fixed set." What exact kernel API do you need? This patch set exposes the total number of keys and max keys, through sysfs. https://marc.info/?l=linux-kernel&m=150995950219669&w=2 Is this sufficient? or do you need something else? RP -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

1
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Re: [Linux-kselftest-mirror] [PATCH] selftests: memfd_test.c: fix compilation warning.

by Shuah Khan

On 11/05/2017 03:56 AM, Lei Yang wrote: > Replace '%d' by '%zu' to fix the following compilation warning. > > memfd_test.c:517:3: warning: format ‘%d’ expects argument of > type ‘int’,but argument 2 has type ‘size_t’ [-Wformat=] > printf("malloc(%d) failed: %m\n", mfd_def_size * 8); > ^ > memfd_test.c: In function ‘mfd_fail_grow_write’: > memfd_test.c:537:3: warning: format ‘%d’ expects argument > of type ‘int’,but argument 2 has type ‘size_t’ [-Wformat=] > printf("malloc(%d) failed: %m\n", mfd_def_size * 8); > > Signed-off-by: Lei Yang <Lei.Yang(a)windriver.com> Thanks for the patch. Applied to linux-kselftest next for 4.15-rc1 -- Shuah -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

1
0
0 0

[Linux-kselftest-mirror] [PATCH v2 0/2] selftests: firmware: skip testing unsupported features

by Amit Pundir

Hi, At Linaro we run mainline/linux-next selftests on LTS releases and run into few test failures due to kernel mismatch or missing upstream functionality in older kernels. Discussed at length here: https://lkml.org/lkml/2017/6/15/652 This patch series is an attempt to modify selftest firmware test scripts. The proposed changes skip/ignore testing the upstream functionality missing in the older kernel releases. v2: Changed the display message to make it consistent across all the firmware test scripts. Added Fixes tag. Regards, Amit Pundir Amit Pundir (2): selftests: firmware: skip unsupported async loading tests selftests: firmware: skip unsupported custom firmware fallback tests tools/testing/selftests/firmware/fw_fallback.sh | 38 ++++++++++++++++------- tools/testing/selftests/firmware/fw_filesystem.sh | 34 ++++++++++++-------- 2 files changed, 47 insertions(+), 25 deletions(-) -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

1
2
0 0

[Linux-kselftest-mirror] [RFC PATCH for 4.15 6/6] membarrier: selftest: Test private expedited sync core cmd

by Mathieu Desnoyers

Test the new MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE and MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE commands. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> CC: Shuah Khan <shuahkh(a)osg.samsung.com> CC: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Andrew Hunter <ahh(a)google.com> CC: Maged Michael <maged.michael(a)gmail.com> CC: gromer(a)google.com CC: Avi Kivity <avi(a)scylladb.com> CC: Benjamin Herrenschmidt <benh(a)kernel.crashing.org> CC: Paul Mackerras <paulus(a)samba.org> CC: Michael Ellerman <mpe(a)ellerman.id.au> CC: Dave Watson <davejwatson(a)fb.com> CC: Alan Stern <stern(a)rowland.harvard.edu> CC: Will Deacon <will.deacon(a)arm.com> CC: Andy Lutomirski <luto(a)kernel.org> CC: Alice Ferrazzi <alice.ferrazzi(a)gmail.com> CC: Paul Elder <paul.elder(a)pitt.edu> CC: linux-kselftest(a)vger.kernel.org CC: linux-arch(a)vger.kernel.org --- .../testing/selftests/membarrier/membarrier_test.c | 77 +++++++++++++++++++++- 1 file changed, 76 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c index d7543a6d9030..a0eae8d51e72 100644 --- a/tools/testing/selftests/membarrier/membarrier_test.c +++ b/tools/testing/selftests/membarrier/membarrier_test.c @@ -132,6 +132,63 @@ static int test_membarrier_private_expedited_success(void) return 0; } +static int test_membarrier_private_expedited_sync_core_fail(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE not registered failure"; + + if (sys_membarrier(cmd, flags) != -1) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should fail, but passed\n", + test_name, flags); + } + if (errno != EPERM) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EPERM, strerror(EPERM), + errno, strerror(errno)); + } + + ksft_test_result_pass( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + return 0; +} + +static int test_membarrier_register_private_expedited_sync_core_success(void) +{ + int cmd = MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + +static int test_membarrier_private_expedited_sync_core_success(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + static int test_membarrier(void) { int status; @@ -154,6 +211,22 @@ static int test_membarrier(void) status = test_membarrier_private_expedited_success(); if (status) return status; + status = sys_membarrier(MEMBARRIER_CMD_QUERY, 0); + if (status < 0) { + ksft_test_result_fail("sys_membarrier() failed\n"); + return status; + } + if (status & MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE) { + status = test_membarrier_private_expedited_sync_core_fail(); + if (status) + return status; + status = test_membarrier_register_private_expedited_sync_core_success(); + if (status) + return status; + status = test_membarrier_private_expedited_sync_core_success(); + if (status) + return status; + } return 0; } @@ -173,8 +246,10 @@ static int test_membarrier_query(void) } ksft_exit_fail_msg("sys_membarrier() failed\n"); } - if (!(ret & MEMBARRIER_CMD_SHARED)) + if (!(ret & MEMBARRIER_CMD_SHARED)) { + ksft_test_result_fail("sys_membarrier() CMD_SHARED query failed\n"); ksft_exit_fail_msg("sys_membarrier is not supported.\n"); + } ksft_test_result_pass("sys_membarrier available\n"); return 0; -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

1
0
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[Linux-kselftest-mirror] [RFC PATCH for 4.15 1/6] membarrier: selftest: Test private expedited cmd

by Mathieu Desnoyers

Test the new MEMBARRIER_CMD_PRIVATE_EXPEDITED and MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED commands. Add checks expecting specific error values on system calls expected to fail. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Acked-by: Shuah Khan <shuahkh(a)osg.samsung.com> Acked-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> CC: Peter Zijlstra <peterz(a)infradead.org> CC: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Andrew Hunter <ahh(a)google.com> CC: Maged Michael <maged.michael(a)gmail.com> CC: gromer(a)google.com CC: Avi Kivity <avi(a)scylladb.com> CC: Benjamin Herrenschmidt <benh(a)kernel.crashing.org> CC: Paul Mackerras <paulus(a)samba.org> CC: Michael Ellerman <mpe(a)ellerman.id.au> CC: Dave Watson <davejwatson(a)fb.com> CC: Alan Stern <stern(a)rowland.harvard.edu> CC: Will Deacon <will.deacon(a)arm.com> CC: Andy Lutomirski <luto(a)kernel.org> CC: Alice Ferrazzi <alice.ferrazzi(a)gmail.com> CC: Paul Elder <paul.elder(a)pitt.edu> CC: linux-kselftest(a)vger.kernel.org CC: linux-arch(a)vger.kernel.org --- .../testing/selftests/membarrier/membarrier_test.c | 109 ++++++++++++++++++--- 1 file changed, 94 insertions(+), 15 deletions(-) diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c index 9e674d9514d1..d7543a6d9030 100644 --- a/tools/testing/selftests/membarrier/membarrier_test.c +++ b/tools/testing/selftests/membarrier/membarrier_test.c @@ -16,49 +16,119 @@ static int sys_membarrier(int cmd, int flags) static int test_membarrier_cmd_fail(void) { int cmd = -1, flags = 0; + const char *test_name = "sys membarrier invalid command"; if (sys_membarrier(cmd, flags) != -1) { ksft_exit_fail_msg( - "sys membarrier invalid command test: command = %d, flags = %d. Should fail, but passed\n", - cmd, flags); + "%s test: command = %d, flags = %d. Should fail, but passed\n", + test_name, cmd, flags); + } + if (errno != EINVAL) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EINVAL, strerror(EINVAL), + errno, strerror(errno)); } ksft_test_result_pass( - "sys membarrier invalid command test: command = %d, flags = %d. Failed as expected\n", - cmd, flags); + "%s test: command = %d, flags = %d, errno = %d. Failed as expected\n", + test_name, cmd, flags, errno); return 0; } static int test_membarrier_flags_fail(void) { int cmd = MEMBARRIER_CMD_QUERY, flags = 1; + const char *test_name = "sys membarrier MEMBARRIER_CMD_QUERY invalid flags"; if (sys_membarrier(cmd, flags) != -1) { ksft_exit_fail_msg( - "sys membarrier MEMBARRIER_CMD_QUERY invalid flags test: flags = %d. Should fail, but passed\n", - flags); + "%s test: flags = %d. Should fail, but passed\n", + test_name, flags); + } + if (errno != EINVAL) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EINVAL, strerror(EINVAL), + errno, strerror(errno)); } ksft_test_result_pass( - "sys membarrier MEMBARRIER_CMD_QUERY invalid flags test: flags = %d. Failed as expected\n", - flags); + "%s test: flags = %d, errno = %d. Failed as expected\n", + test_name, flags, errno); return 0; } -static int test_membarrier_success(void) +static int test_membarrier_shared_success(void) { int cmd = MEMBARRIER_CMD_SHARED, flags = 0; - const char *test_name = "sys membarrier MEMBARRIER_CMD_SHARED\n"; + const char *test_name = "sys membarrier MEMBARRIER_CMD_SHARED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", test_name, flags); + return 0; +} + +static int test_membarrier_private_expedited_fail(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED not registered failure"; + + if (sys_membarrier(cmd, flags) != -1) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should fail, but passed\n", + test_name, flags); + } + if (errno != EPERM) { + ksft_exit_fail_msg( + "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n", + test_name, flags, EPERM, strerror(EPERM), + errno, strerror(errno)); + } + + ksft_test_result_pass( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + return 0; +} + +static int test_membarrier_register_private_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED"; if (sys_membarrier(cmd, flags) != 0) { ksft_exit_fail_msg( - "sys membarrier MEMBARRIER_CMD_SHARED test: flags = %d\n", - flags); + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); } ksft_test_result_pass( - "sys membarrier MEMBARRIER_CMD_SHARED test: flags = %d\n", - flags); + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + +static int test_membarrier_private_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); return 0; } @@ -72,7 +142,16 @@ static int test_membarrier(void) status = test_membarrier_flags_fail(); if (status) return status; - status = test_membarrier_success(); + status = test_membarrier_shared_success(); + if (status) + return status; + status = test_membarrier_private_expedited_fail(); + if (status) + return status; + status = test_membarrier_register_private_expedited_success(); + if (status) + return status; + status = test_membarrier_private_expedited_success(); if (status) return status; return 0; -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

1
0
0 0

[Linux-kselftest-mirror] [PATCH 0/2] selftests: firmware: skip testing unsupported features

by Amit Pundir

Hi, At Linaro we run mainline/linux-next selftests on LTS releases and run into few test failures due to kernel mismatch or missing upstream functionality in older kernels. Discussed at length here: https://lkml.org/lkml/2017/6/15/652 This patch series is an attempt to modify selftest firmware test scripts. The proposed changes skip/ignore testing the upstream functionality missing in the older kernel releases. Regards, Amit Pundir Amit Pundir (2): selftests: firmware: skip unsupported async loading tests selftests: firmware: skip unsupported custom firmware fallback tests tools/testing/selftests/firmware/fw_fallback.sh | 38 ++++++++++++++++------- tools/testing/selftests/firmware/fw_filesystem.sh | 34 ++++++++++++-------- 2 files changed, 47 insertions(+), 25 deletions(-) -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

5
9
0 0

Re: [Linux-kselftest-mirror] [PATCH] selftests: futex: fix compilation error

by Shuah Khan

On 11/06/2017 06:18 PM, lei yang wrote: > > > On 2017年11月07日 07:48, Shuah Khan wrote: >> On 11/06/2017 04:45 PM, Shuah Khan wrote: >>> On 11/05/2017 09:03 PM, Lei Yang wrote: >>>> I run into below error when building futext >>>> /bin/sh: -c: line 5: syntax error: unexpected end of file >>>> >>>> the closing ";" and "\" are necessary. >>>> My OS is "Ubuntu 14.04.5 LTS" >>>> >>>> Signed-off-by: Lei Yang <Lei.Yang(a)windriver.com> >>>> --- >>>> tools/testing/selftests/futex/Makefile | 6 +++--- >>>> 1 file changed, 3 insertions(+), 3 deletions(-) >>>> >>>> diff --git a/tools/testing/selftests/futex/Makefile b/tools/testing/selftests/futex/Makefile >>>> index f0c0369..943f3a2 100644 >>>> --- a/tools/testing/selftests/futex/Makefile >>>> +++ b/tools/testing/selftests/futex/Makefile >>>> @@ -11,9 +11,9 @@ all: >>>> BUILD_TARGET=$(OUTPUT)/$$DIR; \ >>>> mkdir $$BUILD_TARGET -p; \ >>>> make OUTPUT=$$BUILD_TARGET -C $$DIR $@;\ >>>> - if [ -e $$DIR/$(TEST_PROGS) ]; then >>>> - rsync -a $$DIR/$(TEST_PROGS) $$BUILD_TARGET/; >>>> - fi >>>> + if [ -e $$DIR/$(TEST_PROGS) ]; then \ >>>> + rsync -a $$DIR/$(TEST_PROGS) $$BUILD_TARGET/; \ >>>> + fi \ >>>> done >>>> override define RUN_TESTS >>>> >>> Hmm. I don't see this error on linux_4.14-rc8? >>> >>> Can you give more details on the gcc version you are using? >> >> I meant gnumake version? I am not seeing the failure with what I am >> using > > $ make -v > GNU Make 3.81 > Copyright (C) 2006 Free Software Foundation, Inc. > This is free software; see the source for copying conditions. > There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A > PARTICULAR PURPOSE. > > This program built for x86_64-pc-linux-gnu > > > Lei > I can't take patches that aren't tested on the latest kernel release. 3.16 is very old. I am not going reply to other patches you sent. Please make sure the patches are based on the latest release and tested on it as well. thanks, -- Shuah -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

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[Linux-kselftest-mirror] [PATCH] selftests: kselftest.h: fix compilation errors

by Lei Yang

In next branch, Various build failed with: In file included from membarrier_test.c:8:0: ../kselftest.h: In function ‘ksft_print_header’: ../kselftest.h:61:3: error: expected ‘)’ before ‘printf’ printf("TAP version 13\n"); ^ ../kselftest.h:62:1: error: expected expression before ‘}’ token } ^ Signed-off-by: Lei Yang <Lei.Yang(a)windriver.com> --- tools/testing/selftests/kselftest.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/kselftest.h b/tools/testing/selftests/kselftest.h index d6732ba312ef..acc98a5c3d73 100644 --- a/tools/testing/selftests/kselftest.h +++ b/tools/testing/selftests/kselftest.h @@ -57,7 +57,7 @@ static inline int ksft_get_error_cnt(void) { return ksft_cnt.ksft_error; } static inline void ksft_print_header(void) { - if (!(getenv("KSFT_TAP_LEVEL")) + if (!(getenv("KSFT_TAP_LEVEL"))) printf("TAP version 13\n"); } -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

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Re: [Linux-kselftest-mirror] [PATCH] selftests: memfd_test.c: fix compilation warning.

by lei yang

I got the same warning even with ubuntu new distro, this patch fixed this issue. $ gcc --version gcc (Ubuntu 6.3.0-12ubuntu2) 6.3.0 20170406 Copyright (C) 2016 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. $ make -v GNU Make 4.1 Built for x86_64-pc-linux-gnu Copyright (C) 1988-2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. $ uname -a Linux pek-lyang0-u17 4.10.0-38-generic #42-Ubuntu SMP Tue Oct 10 13:24:27 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux --------------------- memfd_test.c: In function mfd_assert_grow_write: memfd_test.c:517:19: warning: format %d expects argument of type int, but argument 2 has type size_t {aka long unsigned int} [-Wformat=] printf("malloc(%d) failed: %m\n", mfd_def_size * 8); ^ memfd_test.c: In function mfd_fail_grow_write: memfd_test.c:537:19: warning: format %d expects argument of type int, but argument 2 has type size_t {aka long unsigned int} [-Wformat=] printf("malloc(%d) failed: %m\n", mfd_def_size * 8); Lei On 2017年11月07日 07:46, Shuah Khan wrote: > On 11/05/2017 03:56 AM, Lei Yang wrote: >> Replace '%d' by '%zu' to fix the following compilation warning. >> >> memfd_test.c:517:3: warning: format ‘%d’ expects argument of >> type ‘int’,but argument 2 has type ‘size_t’ [-Wformat=] >> printf("malloc(%d) failed: %m\n", mfd_def_size * 8); >> ^ >> memfd_test.c: In function ‘mfd_fail_grow_write’: >> memfd_test.c:537:3: warning: format ‘%d’ expects argument >> of type ‘int’,but argument 2 has type ‘size_t’ [-Wformat=] >> printf("malloc(%d) failed: %m\n", mfd_def_size * 8); >> >> Signed-off-by: Lei Yang <Lei.Yang(a)windriver.com> >> --- >> tools/testing/selftests/memfd/memfd_test.c | 4 ++-- >> 1 file changed, 2 insertions(+), 2 deletions(-) >> >> diff --git a/tools/testing/selftests/memfd/memfd_test.c b/tools/testing/selftests/memfd/memfd_test.c >> index f94c6d1..95df9e6 100644 >> --- a/tools/testing/selftests/memfd/memfd_test.c >> +++ b/tools/testing/selftests/memfd/memfd_test.c >> @@ -514,7 +514,7 @@ static void mfd_assert_grow_write(int fd) >> >> buf = malloc(mfd_def_size * 8); >> if (!buf) { >> - printf("malloc(%d) failed: %m\n", mfd_def_size * 8); >> + printf("malloc(%zu) failed: %m\n", mfd_def_size * 8); >> abort(); >> } >> >> @@ -534,7 +534,7 @@ static void mfd_fail_grow_write(int fd) >> >> buf = malloc(mfd_def_size * 8); >> if (!buf) { >> - printf("malloc(%d) failed: %m\n", mfd_def_size * 8); >> + printf("malloc(%zu) failed: %m\n", mfd_def_size * 8); >> abort(); >> } >> >> > Relates to gcc version perhaps. What's your gcc version? > > thanks, > -- Shuah -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

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Re: [Linux-kselftest-mirror] [PATCH] selftests: fix compile error for sync

by Shuah Khan

On 11/06/2017 06:14 PM, lei yang wrote: > > > On 2017年11月07日 07:35, Shuah Khan wrote: >> On 11/05/2017 03:08 AM, Lei Yang wrote: >>> I got below error message when building sync test: >>> >>> make[1]: Entering directory `tools/testing/selftests/sync' >>> gcc -c sync.c -o tools/testing/selftests/sync/sync.o >>> sync.c:42:29: fatal error: linux/sync_file.h: No such file or directory >>> #include <linux/sync_file.h> >>> >>> obviously, CFLAGS and LDFLAGS are not used when comipling. >>> >>> Signed-off-by: Lei Yang <Lei.Yang(a)windriver.com> >>> --- >>> tools/testing/selftests/sync/Makefile | 4 ++-- >>> 1 file changed, 2 insertions(+), 2 deletions(-) >>> >>> diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile >>> index 8e04d0a..46cbcc3 100644 >>> --- a/tools/testing/selftests/sync/Makefile >>> +++ b/tools/testing/selftests/sync/Makefile >>> @@ -29,9 +29,9 @@ $(TEST_CUSTOM_PROGS): $(TESTS) $(OBJS) >>> $(CC) -o $(TEST_CUSTOM_PROGS) $(OBJS) $(TESTS) $(CFLAGS) $(LDFLAGS) >>> $(OBJS): $(OUTPUT)/%.o: %.c >>> - $(CC) -c $^ -o $@ >>> + $(CC) -c $^ -o $@ $(CFLAGS) $(LDFLAGS) >>> $(TESTS): $(OUTPUT)/%.o: %.c >>> - $(CC) -c $^ -o $@ >>> + $(CC) -c $^ -o $@ $(CFLAGS) $(LDFLAGS) >>> EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(OBJS) $(TESTS) >>> >> How are you building the test? I am not seeing the error on linux-4.14.0-rc8 > > make -C tools/testing/selftests > > Lei > > Based on the information in your other emails, looks like you are testing these patches on $ cat /proc/version Linux version 3.16.0-30-generic (buildd@kissel) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #40~14.04.1-Ubuntu SMP Thu Jan 15 17:43:14 UTC 2015 That explains why you aren't finding sync_file.h header. This test isn't applicable to Linux 3.16. In any case, I can't take patches that aren't tested on the latest kernel release. 3.16 is very old. thanks, -- Shuah -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

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Re: [Linux-kselftest-mirror] [PATCH v9 00/51] powerpc, mm: Memory Protection Keys

by Ram Pai

On Tue, Nov 07, 2017 at 08:32:16AM +0100, Florian Weimer wrote: > * Ram Pai: > > > On Mon, Nov 06, 2017 at 10:28:41PM +0100, Florian Weimer wrote: > >> * Ram Pai: > >> > >> > Testing: > >> > ------- > >> > This patch series has passed all the protection key > >> > tests available in the selftest directory.The > >> > tests are updated to work on both x86 and powerpc. > >> > The selftests have passed on x86 and powerpc hardware. > >> > >> How do you deal with the key reuse problem? Is it the same as x86-64, > >> where it's quite easy to accidentally grant existing threads access to > >> a just-allocated key, either due to key reuse or a changed init_pkru > >> parameter? > > > > I am not sure how on x86-64, two threads get allocated the same key > > at the same time? the key allocation is guarded under the mmap_sem > > semaphore. So there cannot be a race where two threads get allocated > > the same key. > > The problem is a pkey_alloc/pthread_create/pkey_free/pkey_alloc > sequence. The pthread_create call makes the new thread inherit the > access rights of the current thread, but then the key is deallocated. > Reallocation of the same key will have that thread retain its access > rights, which is IMHO not correct. (Dave Hansen: please correct me if I miss-speak below) As per the current semantics of sys_pkey_free(); the way I understand it, the calling thread is saying disassociate me from this key. Other threads continue to be associated with the key and could continue to get key-faults, but this calling thread will not get key-faults on that key any more. Also the key should not get reallocated till all the threads in the process have disassocated from the key; by calling sys_pkey_free(). >From that point of view, I think there is a bug in the implementation of pkey on x86 and now on powerpc aswell. > > > Can you point me to the issue, if it is already discussed somewhere? > > See ‘MPK: pkey_free and key reuse’ on various lists (including > linux-mm and linux-arch). > > It has a test case attached which demonstrates the behavior. > > > As far as the semantics is concerned, a key allocated in one thread's > > context has no meaning if used in some other threads context within the > > same process. The app should not try to re-use a key allocated in a > > thread's context in some other threads's context. > > Uh-oh, that's not how this feature works on x86-64 at all. There, the > keys are a process-global resource. Treating them per-thread > seriously reduces their usefulness. Sorry. I was not thinking right. Let me restate. A key is a global resource, but the permissions on a key is local to a thread. For eg: the same key could disable access on a page for one thread, while it could disable write on the same page on another thread. > > >> What about siglongjmp from a signal handler? > > > > On powerpc there is some relief. the permissions on a key can be > > modified from anywhere, including from the signal handler, and the > > effect will be immediate. You dont have to wait till the > > signal handler returns for the key permissions to be restore. > > My concern is that the signal handler knows nothing about protection > keys, but the current x86-64 semantics will cause it to clobber the > access rights of the current thread. > > > also after return from the sigsetjmp(); > > possibly caused by siglongjmp(), the program can restore the permission > > on any key. > > So that's not really an option. > > > Atleast that is my theory. Can you give me a testcase; if you have one > > handy. > > The glibc patch I posted under the ‘MPK: pkey_free and key reuse’ > thread covers this, too. thanks. will try the test case with my kernel patches. But, on powerpc one can change the permissions on the key in the signal handler which takes into effect immediately, there should not be a bug in powerpc. x86 has this requirement where it has to return from the signal handler back to the kernel in order to change the permission on a key, it can cause issues with longjump. RP -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

7 years, 5 months

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[Linux-kselftest-mirror] [PATCH v3 1/2] selftests: bpf: test_kmod.sh: check the module path before insmod

by naresh.kamboju＠linaro.org

From: Naresh Kamboju <naresh.kamboju(a)linaro.org> test_kmod.sh reported false failure when module not present. Instead check test_bpf.ko is present in the path before loading it. Signed-off-by: Naresh Kamboju <naresh.kamboju(a)linaro.org> --- tools/testing/selftests/bpf/test_kmod.sh | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/bpf/test_kmod.sh b/tools/testing/selftests/bpf/test_kmod.sh index 6d58cca8e235..2e5a1049e2f2 100755 --- a/tools/testing/selftests/bpf/test_kmod.sh +++ b/tools/testing/selftests/bpf/test_kmod.sh @@ -9,9 +9,11 @@ test_run() echo "[ JIT enabled:$1 hardened:$2 ]" dmesg -C - insmod $SRC_TREE/lib/test_bpf.ko 2> /dev/null - if [ $? -ne 0 ]; then - rc=1 + if [ -f ${SRC_TREE}/lib/test_bpf.ko ]; then + insmod ${SRC_TREE}/lib/test_bpf.ko 2> /dev/null + if [ $? -ne 0 ]; then + rc=1 + fi fi rmmod test_bpf 2> /dev/null dmesg | grep FAIL -- 2.14.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

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