September 2025 - Linux-kselftest-mirror

[PATCH net-next v3] selftests: forwarding: Reorder (ar)ping arguments to obey POSIX getopt

by David Yang

Quoted from musl wiki: GNU getopt permutes argv to pull options to the front, ahead of non-option arguments. musl and the POSIX standard getopt stop processing options at the first non-option argument with no permutation. Thus these scripts stop working on musl since non-option arguments for tools using getopt() (in this case, (ar)ping) do not always come last. Fix it by reordering arguments. Signed-off-by: David Yang <mmyangfl(a)gmail.com> --- v2: https://lore.kernel.org/r/20250906170440.3513399-1-mmyangfl@gmail.com - fix (ar)ping only v1: https://lore.kernel.org/r/20250905173947.3164807-1-mmyangfl@gmail.com - fix CI errors .../selftests/net/forwarding/custom_multipath_hash.sh | 2 +- .../selftests/net/forwarding/gre_custom_multipath_hash.sh | 2 +- .../selftests/net/forwarding/ip6_forward_instats_vrf.sh | 6 +++--- .../net/forwarding/ip6gre_custom_multipath_hash.sh | 2 +- tools/testing/selftests/net/forwarding/lib.sh | 8 ++++---- .../selftests/net/forwarding/mirror_gre_bridge_1q_lag.sh | 2 +- .../selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh | 4 ++-- 7 files changed, 13 insertions(+), 13 deletions(-) diff --git a/tools/testing/selftests/net/forwarding/custom_multipath_hash.sh b/tools/testing/selftests/net/forwarding/custom_multipath_hash.sh index 7d531f7091e6..5dbfab0e23e3 100755 --- a/tools/testing/selftests/net/forwarding/custom_multipath_hash.sh +++ b/tools/testing/selftests/net/forwarding/custom_multipath_hash.sh @@ -226,7 +226,7 @@ send_flowlabel() # Generate 16384 echo requests, each with a random flow label. ip vrf exec v$h1 sh -c \ "for _ in {1..16384}; do \ - $PING6 2001:db8:4::2 -F 0 -c 1 -q >/dev/null 2>&1; \ + $PING6 -F 0 -c 1 -q 2001:db8:4::2 >/dev/null 2>&1; \ done" } diff --git a/tools/testing/selftests/net/forwarding/gre_custom_multipath_hash.sh b/tools/testing/selftests/net/forwarding/gre_custom_multipath_hash.sh index dda11a4a9450..b4f17a5bbc61 100755 --- a/tools/testing/selftests/net/forwarding/gre_custom_multipath_hash.sh +++ b/tools/testing/selftests/net/forwarding/gre_custom_multipath_hash.sh @@ -321,7 +321,7 @@ send_flowlabel() # Generate 16384 echo requests, each with a random flow label. ip vrf exec v$h1 sh -c \ "for _ in {1..16384}; do \ - $PING6 2001:db8:2::2 -F 0 -c 1 -q >/dev/null 2>&1; \ + $PING6 -F 0 -c 1 -q 2001:db8:2::2 >/dev/null 2>&1; \ done" } diff --git a/tools/testing/selftests/net/forwarding/ip6_forward_instats_vrf.sh b/tools/testing/selftests/net/forwarding/ip6_forward_instats_vrf.sh index 49fa94b53a1c..25036e38043c 100755 --- a/tools/testing/selftests/net/forwarding/ip6_forward_instats_vrf.sh +++ b/tools/testing/selftests/net/forwarding/ip6_forward_instats_vrf.sh @@ -95,7 +95,7 @@ ipv6_in_too_big_err() # Send too big packets ip vrf exec $vrf_name \ - $PING6 -s 1300 2001:1:2::2 -c 1 -w $PING_TIMEOUT &> /dev/null + $PING6 -s 1300 -c 1 -w $PING_TIMEOUT 2001:1:2::2 &> /dev/null local t1=$(ipv6_stats_get $rtr1 Ip6InTooBigErrors) test "$((t1 - t0))" -ne 0 @@ -131,7 +131,7 @@ ipv6_in_addr_err() # Disable forwarding temporary while sending the packet sysctl -qw net.ipv6.conf.all.forwarding=0 ip vrf exec $vrf_name \ - $PING6 2001:1:2::2 -c 1 -w $PING_TIMEOUT &> /dev/null + $PING6 -c 1 -w $PING_TIMEOUT 2001:1:2::2 &> /dev/null sysctl -qw net.ipv6.conf.all.forwarding=1 local t1=$(ipv6_stats_get $rtr1 Ip6InAddrErrors) @@ -150,7 +150,7 @@ ipv6_in_discard() # Add a policy to discard ip xfrm policy add dst 2001:1:2::2/128 dir fwd action block ip vrf exec $vrf_name \ - $PING6 2001:1:2::2 -c 1 -w $PING_TIMEOUT &> /dev/null + $PING6 -c 1 -w $PING_TIMEOUT 2001:1:2::2 &> /dev/null ip xfrm policy del dst 2001:1:2::2/128 dir fwd local t1=$(ipv6_stats_get $rtr1 Ip6InDiscards) diff --git a/tools/testing/selftests/net/forwarding/ip6gre_custom_multipath_hash.sh b/tools/testing/selftests/net/forwarding/ip6gre_custom_multipath_hash.sh index e28b4a079e52..b24acfa52a3a 100755 --- a/tools/testing/selftests/net/forwarding/ip6gre_custom_multipath_hash.sh +++ b/tools/testing/selftests/net/forwarding/ip6gre_custom_multipath_hash.sh @@ -323,7 +323,7 @@ send_flowlabel() # Generate 16384 echo requests, each with a random flow label. ip vrf exec v$h1 sh -c \ "for _ in {1..16384}; do \ - $PING6 2001:db8:2::2 -F 0 -c 1 -q >/dev/null 2>&1; \ + $PING6 -F 0 -c 1 -q 2001:db8:2::2 >/dev/null 2>&1; \ done" } diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh index 08121cb9dc26..2c252423b326 100644 --- a/tools/testing/selftests/net/forwarding/lib.sh +++ b/tools/testing/selftests/net/forwarding/lib.sh @@ -1267,8 +1267,8 @@ ping_do() vrf_name=$(master_name_get $if_name) ip vrf exec $vrf_name \ - $PING $args $dip -c $PING_COUNT -i 0.1 \ - -w $PING_TIMEOUT &> /dev/null + $PING $args -c $PING_COUNT -i 0.1 \ + -w $PING_TIMEOUT $dip &> /dev/null } ping_test() @@ -1298,8 +1298,8 @@ ping6_do() vrf_name=$(master_name_get $if_name) ip vrf exec $vrf_name \ - $PING6 $args $dip -c $PING_COUNT -i 0.1 \ - -w $PING_TIMEOUT &> /dev/null + $PING6 $args -c $PING_COUNT -i 0.1 \ + -w $PING_TIMEOUT $dip &> /dev/null } ping6_test() diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1q_lag.sh b/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1q_lag.sh index a20d22d1df36..8d4ae6c952a1 100755 --- a/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1q_lag.sh +++ b/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1q_lag.sh @@ -238,7 +238,7 @@ test_lag_slave() ip neigh flush dev br1 setup_wait_dev $up_dev setup_wait_dev $host_dev - $ARPING -I br1 192.0.2.130 -qfc 1 + $ARPING -I br1 -qfc 1 192.0.2.130 sleep 2 mirror_test vrf-h1 192.0.2.1 192.0.2.18 $host_dev 1 ">= 10" diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh b/tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh index 1b902cc579f6..a21c771908b3 100755 --- a/tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh +++ b/tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh @@ -196,7 +196,7 @@ test_span_gre_forbidden_egress() bridge vlan add dev $swp3 vid 555 # Re-prime FDB - $ARPING -I br1.555 192.0.2.130 -fqc 1 + $ARPING -I br1.555 -fqc 1 192.0.2.130 sleep 1 quick_test_span_gre_dir $tundev @@ -290,7 +290,7 @@ test_span_gre_fdb_roaming() bridge fdb del dev $swp2 $h3mac vlan 555 master 2>/dev/null # Re-prime FDB - $ARPING -I br1.555 192.0.2.130 -fqc 1 + $ARPING -I br1.555 -fqc 1 192.0.2.130 sleep 1 quick_test_span_gre_dir $tundev -- 2.51.0

2 months, 1 week

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[PATCH RFC bpf-next 0/6] Add the the capability to load HW RX checsum in eBPF programs

by Lorenzo Bianconi

Introduce bpf_xdp_metadata_rx_checksum() kfunc in order to load the HW RX cheksum results in the eBPF program binded to the NIC. Implement xmo_rx_checksum callback for veth and ice drivers. --- Lorenzo Bianconi (6): netlink: specs: Add XDP RX checksum capability to XDP metadata specs net: xdp: Add xmo_rx_checksum callback veth: Add xmo_rx_checksum callback to veth driver net: ice: Add xmo_rx_checksum callback selftests/bpf: Add selftest support for bpf_xdp_metadata_rx_checksum selftests/bpf: Add bpf_xdp_metadata_rx_checksum support to xdp_hw_metadat prog Documentation/netlink/specs/netdev.yaml | 5 ++ drivers/net/ethernet/intel/ice/ice_base.c | 1 + drivers/net/ethernet/intel/ice/ice_txrx.h | 1 + drivers/net/ethernet/intel/ice/ice_txrx_lib.c | 82 ++++++++++++++++++++++ drivers/net/veth.c | 19 +++++ include/net/xdp.h | 6 ++ net/core/xdp.c | 29 ++++++++ .../selftests/bpf/prog_tests/xdp_metadata.c | 7 ++ .../testing/selftests/bpf/progs/xdp_hw_metadata.c | 7 ++ tools/testing/selftests/bpf/progs/xdp_metadata.c | 1 + tools/testing/selftests/bpf/xdp_hw_metadata.c | 27 +++++++ tools/testing/selftests/bpf/xdp_metadata.h | 13 ++++ 12 files changed, 198 insertions(+) --- base-commit: 315f423be0d1ebe720d8fd4fa6bed68586b13d34 change-id: 20250915-xdp-meta-rxcksum-963cb3a793e7 Best regards, -- Lorenzo Bianconi <lorenzo(a)kernel.org>

2 months, 1 week

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[PATCH][next] selftests/clone3: Fix spelling mistake "supportd" -> "supported"

by Colin Ian King

There is a spelling mistake in a ksft_print_msg message. Fix it. Signed-off-by: Colin Ian King <colin.i.king(a)gmail.com> --- tools/testing/selftests/clone3/clone3.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/clone3/clone3.c b/tools/testing/selftests/clone3/clone3.c index 05c3d2dcbf2a..385cf08f8cf8 100644 --- a/tools/testing/selftests/clone3/clone3.c +++ b/tools/testing/selftests/clone3/clone3.c @@ -71,7 +71,7 @@ static void test_shadow_stack_supported(void) } else if ((void *)ret == MAP_FAILED) { ksft_print_msg("Failed to map shadow stack\n"); } else { - ksft_print_msg("Shadow stack supportd\n"); + ksft_print_msg("Shadow stack supported\n"); shadow_stack_supported = true; if (!shadow_stack_enabled) -- 2.51.0

2 months, 1 week

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[PATCH 00/15 v6.6.y] Backport minmax.h updates from v6.17-rc7

by Eliav Farber

This series backports 15 patches to update minmax.h in the 6.6.y branch, aligning it with v6.17-rc7. The ultimate goal is to synchronize all longterm branches so that they include the full set of minmax.h changes. The key motivation is to bring in commit d03eba99f5bf ("minmax: allow min()/max()/clamp() if the arguments have the same signedness"), which is missing in older kernels. In mainline, this change enables min()/max()/clamp() to accept mixed argument types, provided both have the same signedness. Without it, backported patches that use these forms may trigger compiler warnings, which escalate to build failures when -Werror is enabled. David Laight (7): minmax.h: add whitespace around operators and after commas minmax.h: update some comments minmax.h: reduce the #define expansion of min(), max() and clamp() minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp() minmax.h: move all the clamp() definitions after the min/max() ones minmax.h: simplify the variants of clamp() minmax.h: remove some #defines that are only expanded once Linus Torvalds (8): minmax: avoid overly complicated constant expressions in VM code minmax: simplify and clarify min_t()/max_t() implementation minmax: add a few more MIN_T/MAX_T users minmax: make generic MIN() and MAX() macros available everywhere minmax: simplify min()/max()/clamp() implementation minmax: don't use max() in situations that want a C constant expression minmax: improve macro expansion and type checking minmax: fix up min3() and max3() too arch/um/drivers/mconsole_user.c | 2 + arch/x86/mm/pgtable.c | 2 +- drivers/edac/sb_edac.c | 4 +- drivers/edac/skx_common.h | 1 - .../drm/amd/display/modules/hdcp/hdcp_ddc.c | 2 + .../drm/amd/pm/powerplay/hwmgr/ppevvmath.h | 14 +- drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c | 2 +- drivers/gpu/drm/drm_color_mgmt.c | 2 +- drivers/gpu/drm/radeon/evergreen_cs.c | 2 + drivers/hwmon/adt7475.c | 24 +- drivers/input/touchscreen/cyttsp4_core.c | 2 +- drivers/irqchip/irq-sun6i-r.c | 2 +- drivers/md/dm-integrity.c | 6 +- drivers/media/dvb-frontends/stv0367_priv.h | 3 + .../net/can/usb/etas_es58x/es58x_devlink.c | 2 +- .../net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +- drivers/net/fjes/fjes_main.c | 4 +- drivers/nfc/pn544/i2c.c | 2 - drivers/platform/x86/sony-laptop.c | 1 - drivers/scsi/isci/init.c | 6 +- .../pci/hive_isp_css_include/math_support.h | 5 - fs/btrfs/tree-checker.c | 2 +- include/linux/compiler.h | 9 + include/linux/minmax.h | 228 +++++++++++------- include/linux/pageblock-flags.h | 2 +- kernel/trace/preemptirq_delay_test.c | 2 - lib/btree.c | 1 - lib/decompress_unlzma.c | 2 + lib/vsprintf.c | 2 +- mm/zsmalloc.c | 2 - net/ipv4/proc.c | 2 +- net/ipv6/proc.c | 2 +- tools/testing/selftests/mm/mremap_test.c | 2 + tools/testing/selftests/seccomp/seccomp_bpf.c | 2 + 34 files changed, 202 insertions(+), 146 deletions(-) -- 2.47.3

2 months, 1 week

1
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[PATCH 0/2] eventpoll: Fix epoll_wait() report false negative

by Nam Cao

Hi, While staring at epoll, I noticed ep_events_available() looks wrong. I wrote a small program to confirm, and yes it is definitely wrong. This series adds a reproducer to kselftest, and fix the bug. Nam Cao (2): selftests/eventpoll: Add test for multiple waiters eventpoll: Fix epoll_wait() report false negative fs/eventpoll.c | 16 +------ .../filesystems/epoll/epoll_wakeup_test.c | 45 +++++++++++++++++++ 2 files changed, 47 insertions(+), 14 deletions(-) -- 2.39.5

2 months, 1 week

5
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[PATCH RESEND] selftests/powerpc/pmu/: Add check_extended_reg_test to .gitignore

by Gopi Krishna Menon

Add the check_extended_reg_test binary to .gitignore to avoid accidentally staging the build artifact. Signed-off-by: Gopi Krishna Menon <krishnagopi487(a)gmail.com> --- tools/testing/selftests/powerpc/pmu/sampling_tests/.gitignore | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/powerpc/pmu/sampling_tests/.gitignore b/tools/testing/selftests/powerpc/pmu/sampling_tests/.gitignore index f93b4c7c3a8a..ea29228334e8 100644 --- a/tools/testing/selftests/powerpc/pmu/sampling_tests/.gitignore +++ b/tools/testing/selftests/powerpc/pmu/sampling_tests/.gitignore @@ -1,5 +1,6 @@ bhrb_filter_map_test bhrb_no_crash_wo_pmu_test +check_extended_reg_test intr_regs_no_crash_wo_pmu_test mmcr0_cc56run_test mmcr0_exceptionbits_test -- 2.43.0

2 months, 1 week

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[RFC PATCH bpf-next v1 0/3] bpf: Add BPF program type for overriding tracepoint probes

by Fuyu Zhao

Hi everyone, This patchset introduces a new BPF program type that allows overriding a tracepoint probe function registered via register_trace_*. Motivation ---------- Tracepoint probe functions registered via register_trace_* in the kernel cannot be dynamically modified, changing a probe function requires recompiling the kernel and rebooting. Nor can BPF programs change an existing probe function. Overiding tracepoint supports a way to apply patches into kernel quickly (such as applying security ones), through predefined static tracepoints, without waiting for upstream integration. This patchset demonstrates the way to override probe functions by BPF program. Overview -------- This patchset adds BPF_PROG_TYPE_RAW_TRACEPOINT_OVERRIDE program type. When this type of BPF program attaches, it overrides the target tracepoint probe function. And it also extends a new struct type "tracepoint_func_snapshot", which extends the tracepoint structure. It is used to record the original probe function registered by kernel after BPF program being attached and restore from it after detachment. Critical steps -------------- 1. Attach: Attach programs via the raw_tracepoint_open syscall. 2. Override: (a) Locate the target probe by `probe_name`. (b) Override target probe with the BPF program. (c) Save the BPF program and target probe function into "tracepoint_func_snapshot". 3. Restore: When the BPF program is detached, automatically restore the original probe function from earlier saved snapshot. Future work ----------- This patchset is intended as a first step toward supporting BPF programs that can override tracepoint probes. The current implementation may not yet cover all use cases or handle every corner case. I welcome feedback and suggestions from the community, and will continue to refine and improve the design based on comments and real-world requirements. Thanks! Fuyu Fuyu Zhao (3): bpf: Introduce BPF_PROG_TYPE_RAW_TRACEPOINT_OVERRIDE libbpf: Add support for BPF_PROG_TYPE_RAW_TRACEPOINT_OVERRIDE selftests/bpf: Add selftest for "raw_tp.o" include/linux/bpf_types.h | 2 + include/linux/trace_events.h | 9 + include/linux/tracepoint-defs.h | 6 + include/linux/tracepoint.h | 3 + include/uapi/linux/bpf.h | 2 + kernel/bpf/syscall.c | 35 +++- kernel/trace/bpf_trace.c | 31 +++ kernel/tracepoint.c | 190 +++++++++++++++++- tools/include/uapi/linux/bpf.h | 2 + tools/lib/bpf/bpf.c | 1 + tools/lib/bpf/bpf.h | 3 +- tools/lib/bpf/libbpf.c | 27 ++- tools/lib/bpf/libbpf.h | 3 +- .../bpf/prog_tests/raw_tp_override_test_run.c | 23 +++ .../bpf/progs/test_raw_tp_override_test_run.c | 20 ++ .../selftests/bpf/test_kmods/bpf_testmod.c | 7 + 16 files changed, 352 insertions(+), 12 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/raw_tp_override_test_run.c create mode 100644 tools/testing/selftests/bpf/progs/test_raw_tp_override_test_run.c -- 2.43.0

2 months, 1 week

5
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[PATCH] selftests/kexec: Add .gitignore for generated binary

by Madhur Kumar

The test_kexec_jump binary is generated during 'make kselftest' but was not ignored, leading to it appearing as untracked in `git status`. Create a .gitignore file for selftests/kexec and add this generated file to it. Signed-off-by: Madhur Kumar <madhurkumar004(a)gmail.com> --- tools/testing/selftests/kexec/.gitignore | 1 + 1 file changed, 1 insertion(+) create mode 100644 tools/testing/selftests/kexec/.gitignore diff --git a/tools/testing/selftests/kexec/.gitignore b/tools/testing/selftests/kexec/.gitignore new file mode 100644 index 000000000000..6cbe9a1049f3 --- /dev/null +++ b/tools/testing/selftests/kexec/.gitignore @@ -0,0 +1 @@ +test_kexec_jump -- 2.51.0

2 months, 1 week

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[PATCH] selftests/cachestat: Add file tmpshmcstat to .gitignore

by Madhur Kumar

The tmpshmcstat file is generated with kselftest run but was not ignored, leading to it appearing as untracked in git status. Add it to .gitignore to silence the warning. Signed-off-by: Madhur Kumar <madhurkumar004(a)gmail.com> --- tools/testing/selftests/cachestat/.gitignore | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/cachestat/.gitignore b/tools/testing/selftests/cachestat/.gitignore index d6c30b43a4bb..abbb13b6e96b 100644 --- a/tools/testing/selftests/cachestat/.gitignore +++ b/tools/testing/selftests/cachestat/.gitignore @@ -1,2 +1,3 @@ # SPDX-License-Identifier: GPL-2.0-only test_cachestat +tmpshmcstat -- 2.51.0

2 months, 1 week

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[PATCH v2] selftests/timers: Consolidate and fix 32-bit overflow in timespec_sub

by Wake Liu

The timespec_sub function, as implemented in several timer selftests, is prone to integer overflow on 32-bit systems. The calculation `NSEC_PER_SEC * b.tv_sec` is performed using 32-bit arithmetic, and the result overflows before being stored in the 64-bit `ret` variable. This leads to incorrect time delta calculations and test failures. As suggested by tglx, this patch fixes the issue by: 1. Creating a new `static inline` helper function, `timespec_to_ns`, which safely converts a `timespec` to nanoseconds by casting `tv_sec` to `long long` before multiplying with `NSEC_PER_SEC`. 2. Placing the new helper and a rewritten `timespec_sub` into a common header: tools/testing/selftests/timers/helpers.h. 3. Removing the duplicated, buggy implementations from all timer selftests and replacing them with an #include of the new header. This consolidates the code and ensures the calculation is correctly performed using 64-bit arithmetic across all tests. Changes in v2: - Per tglx's feedback, instead of changing NSEC_PER_SEC globally, this version consolidates the buggy timespec_sub() implementations into a new 32-bit safe inline function in a shared header. - Amended the commit message to be more descriptive. --- .../selftests/timers/alarmtimer-suspend.c | 15 +++------ tools/testing/selftests/timers/helpers.h | 31 +++++++++++++++++++ tools/testing/selftests/timers/nanosleep.c | 2 +- tools/testing/selftests/timers/nsleep-lat.c | 12 ++----- .../testing/selftests/timers/valid-adjtimex.c | 8 ++--- 5 files changed, 43 insertions(+), 25 deletions(-) create mode 100644 tools/testing/selftests/timers/helpers.h diff --git a/tools/testing/selftests/timers/alarmtimer-suspend.c b/tools/testing/selftests/timers/alarmtimer-suspend.c index a9ef76ea6051..e85ab182abe5 100644 --- a/tools/testing/selftests/timers/alarmtimer-suspend.c +++ b/tools/testing/selftests/timers/alarmtimer-suspend.c @@ -31,8 +31,9 @@ #include <include/vdso/time64.h> #include <errno.h> #include "../kselftest.h" +#include "helpers.h" -#define UNREASONABLE_LAT (NSEC_PER_SEC * 5) /* hopefully we resume in 5 secs */ +#define UNREASONABLE_LAT (NSEC_PER_SEC * 5LL) /* hopefully we resume in 5 secs */ #define SUSPEND_SECS 15 int alarmcount; @@ -70,14 +71,6 @@ char *clockstring(int clockid) } -long long timespec_sub(struct timespec a, struct timespec b) -{ - long long ret = NSEC_PER_SEC * b.tv_sec + b.tv_nsec; - - ret -= NSEC_PER_SEC * a.tv_sec + a.tv_nsec; - return ret; -} - int final_ret; void sigalarm(int signo) @@ -88,8 +81,8 @@ void sigalarm(int signo) clock_gettime(alarm_clock_id, &ts); alarmcount++; - delta_ns = timespec_sub(start_time, ts); - delta_ns -= NSEC_PER_SEC * SUSPEND_SECS * alarmcount; + delta_ns = timespec_sub(ts, start_time); + delta_ns -= (long long)NSEC_PER_SEC * SUSPEND_SECS * alarmcount; printf("ALARM(%i): %ld:%ld latency: %lld ns ", alarmcount, ts.tv_sec, ts.tv_nsec, delta_ns); diff --git a/tools/testing/selftests/timers/helpers.h b/tools/testing/selftests/timers/helpers.h new file mode 100644 index 000000000000..652f20247091 --- /dev/null +++ b/tools/testing/selftests/timers/helpers.h @@ -0,0 +1,31 @@ +#ifndef SELFTESTS_TIMERS_HELPERS_H +#define SELFTESTS_TIMERS_HELPERS_H + +#include <time.h> + +#ifndef NSEC_PER_SEC +#define NSEC_PER_SEC 1000000000L +#endif + +/* + * timespec_to_ns - Convert timespec to nanoseconds + */ +static inline long long timespec_to_ns(const struct timespec *ts) +{ + return ((long long) ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec; +} + +/* + * timespec_sub - Subtract two timespec values + * + * @a: first timespec + * @b: second timespec + * + * Returns a - b in nanoseconds. + */ +static inline long long timespec_sub(struct timespec a, struct timespec b) +{ + return timespec_to_ns(&a) - timespec_to_ns(&b); +} + +#endif /* SELFTESTS_TIMERS_HELPERS_H */ diff --git a/tools/testing/selftests/timers/nanosleep.c b/tools/testing/selftests/timers/nanosleep.c index 252c6308c569..41c33629d5f0 100644 --- a/tools/testing/selftests/timers/nanosleep.c +++ b/tools/testing/selftests/timers/nanosleep.c @@ -138,7 +138,7 @@ int main(int argc, char **argv) fflush(stdout); length = 10; - while (length <= (NSEC_PER_SEC * 10)) { + while (length <= (NSEC_PER_SEC * 10LL)) { ret = nanosleep_test(clockid, length); if (ret == UNSUPPORTED) { ksft_test_result_skip("%-31s\n", clockstring(clockid)); diff --git a/tools/testing/selftests/timers/nsleep-lat.c b/tools/testing/selftests/timers/nsleep-lat.c index de23dc0c9f97..c888a77aab7a 100644 --- a/tools/testing/selftests/timers/nsleep-lat.c +++ b/tools/testing/selftests/timers/nsleep-lat.c @@ -26,6 +26,7 @@ #include <signal.h> #include <include/vdso/time64.h> #include "../kselftest.h" +#include "helpers.h" #define UNRESONABLE_LATENCY 40000000 /* 40ms in nanosecs */ @@ -74,14 +75,6 @@ struct timespec timespec_add(struct timespec ts, unsigned long long ns) } -long long timespec_sub(struct timespec a, struct timespec b) -{ - long long ret = NSEC_PER_SEC * b.tv_sec + b.tv_nsec; - - ret -= NSEC_PER_SEC * a.tv_sec + a.tv_nsec; - return ret; -} - int nanosleep_lat_test(int clockid, long long ns) { struct timespec start, end, target; @@ -146,7 +139,7 @@ int main(int argc, char **argv) continue; length = 10; - while (length <= (NSEC_PER_SEC * 10)) { + while (length <= (NSEC_PER_SEC * 10LL)) { ret = nanosleep_lat_test(clockid, length); if (ret) break; @@ -164,3 +157,4 @@ int main(int argc, char **argv) ksft_finished(); } + diff --git a/tools/testing/selftests/timers/valid-adjtimex.c b/tools/testing/selftests/timers/valid-adjtimex.c index 6b7801055ad1..a61d4b4739a2 100644 --- a/tools/testing/selftests/timers/valid-adjtimex.c +++ b/tools/testing/selftests/timers/valid-adjtimex.c @@ -260,16 +260,16 @@ int validate_set_offset(void) if (set_offset(-NSEC_PER_SEC - 1, 1)) return -1; - if (set_offset(5 * NSEC_PER_SEC, 1)) + if (set_offset(5LL * NSEC_PER_SEC, 1)) return -1; - if (set_offset(-5 * NSEC_PER_SEC, 1)) + if (set_offset(-5LL * NSEC_PER_SEC, 1)) return -1; - if (set_offset(5 * NSEC_PER_SEC + NSEC_PER_SEC / 2, 1)) + if (set_offset(5LL * NSEC_PER_SEC + NSEC_PER_SEC / 2, 1)) return -1; - if (set_offset(-5 * NSEC_PER_SEC - NSEC_PER_SEC / 2, 1)) + if (set_offset(-5LL * NSEC_PER_SEC - NSEC_PER_SEC / 2, 1)) return -1; if (set_offset(USEC_PER_SEC - 1, 0)) -- 2.51.0.384.g4c02a37b29-goog

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