August 2024 - Linux-kselftest-mirror

[PATCH net] selftest: af_unix: Fix kselftest compilation warnings

by Abhinav Jain

Add proper type cast (char *) to the buffer being passed to TH_LOG macro in __recvpair function. This change fixes the below warnings during test compilation: ``` In file included from msg_oob.c:14: msg_oob.c: In function ‘__recvpair’: ../../kselftest_harness.h:106:40: warning: format ‘%s’ expects argument of type ‘char *’,but argument 6 has type ‘const void *’ [-Wformat=] ../../kselftest_harness.h:101:17: note: in expansion of macro ‘__TH_LOG’ msg_oob.c:235:17: note: in expansion of macro ‘TH_LOG’ ../../kselftest_harness.h:106:40: warning: format ‘%s’ expects argument of type ‘char *’,but argument 6 has type ‘const void *’ [-Wformat=] ../../kselftest_harness.h:101:17: note: in expansion of macro ‘__TH_LOG’ msg_oob.c:259:25: note: in expansion of macro ‘TH_LOG’ ``` Signed-off-by: Abhinav Jain <jain.abhinav177(a)gmail.com> --- tools/testing/selftests/net/af_unix/msg_oob.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/net/af_unix/msg_oob.c b/tools/testing/selftests/net/af_unix/msg_oob.c index 16d0c172eaeb..66d76ab38251 100644 --- a/tools/testing/selftests/net/af_unix/msg_oob.c +++ b/tools/testing/selftests/net/af_unix/msg_oob.c @@ -232,7 +232,8 @@ static void __recvpair(struct __test_metadata *_metadata, if (ret[0] != expected_len || recv_errno[0] != expected_errno) { TH_LOG("AF_UNIX :%s", ret[0] < 0 ? strerror(recv_errno[0]) : recv_buf[0]); - TH_LOG("Expected:%s", expected_errno ? strerror(expected_errno) : expected_buf); + TH_LOG("Expected:%s", + expected_errno ? strerror(expected_errno) : (char *)expected_buf); ASSERT_EQ(ret[0], expected_len); ASSERT_EQ(recv_errno[0], expected_errno); @@ -256,7 +257,8 @@ static void __recvpair(struct __test_metadata *_metadata, cmp = strncmp(expected_buf, recv_buf[0], expected_len); if (cmp) { TH_LOG("AF_UNIX :%s", ret[0] < 0 ? strerror(recv_errno[0]) : recv_buf[0]); - TH_LOG("Expected:%s", expected_errno ? strerror(expected_errno) : expected_buf); + TH_LOG("Expected:%s", expected_errno ? strerror(expected_errno) + : (char *)expected_buf); ASSERT_EQ(cmp, 0); } -- 2.34.1

4 months, 1 week

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Update Needed: Ensure Continuous Service by Updating Your Payment Details

by Hetzner Support

4 months, 1 week

1
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[PATCH v5 00/28] NT synchronization primitive driver

by Elizabeth Figura

This patch series implements a new char misc driver, /dev/ntsync, which is used to implement Windows NT synchronization primitives. NT synchronization primitives are unique in that the wait functions both are vectored, operate on multiple types of object with different behaviour (mutex, semaphore, event), and affect the state of the objects they wait on. This model is not compatible with existing kernel synchronization objects or interfaces, and therefore the ntsync driver implements its own wait queues and locking. This patch series is rebased against the "char-misc-next" branch of gregkh/char-misc.git. == Background == The Wine project emulates the Windows API in user space. One particular part of that API, namely the NT synchronization primitives, have historically been implemented via RPC to a dedicated "kernel" process. However, more recent applications use these APIs more strenuously, and the overhead of RPC has become a bottleneck. The NT synchronization APIs are too complex to implement on top of existing primitives without sacrificing correctness. Certain operations, such as NtPulseEvent() or the "wait-for-all" mode of NtWaitForMultipleObjects(), require direct control over the underlying wait queue, and implementing a wait queue sufficiently robust for Wine in user space is not possible. This proposed driver, therefore, implements the problematic interfaces directly in the Linux kernel. This driver was presented at Linux Plumbers Conference 2023. For those further interested in the history of synchronization in Wine and past attempts to solve this problem in user space, a recording of the presentation can be viewed here: https://www.youtube.com/watch?v=NjU4nyWyhU8 == Performance == The performance measurements described below are copied from earlier versions of the patch set. While some of the code has changed, I do not currently anticipate that it has changed drastically enough to affect those measurements. The gain in performance varies wildly depending on the application in question and the user's hardware. For some games NT synchronization is not a bottleneck and no change can be observed, but for others frame rate improvements of 50 to 150 percent are not atypical. The following table lists frame rate measurements from a variety of games on a variety of hardware, taken by users Dmitry Skvortsov, FuzzyQuils, OnMars, and myself: Game Upstream ntsync improvement =========================================================================== Anger Foot 69 99 43% Call of Juarez 99.8 224.1 125% Dirt 3 110.6 860.7 678% Forza Horizon 5 108 160 48% Lara Croft: Temple of Osiris 141 326 131% Metro 2033 164.4 199.2 21% Resident Evil 2 26 77 196% The Crew 26 51 96% Tiny Tina's Wonderlands 130 360 177% Total War Saga: Troy 109 146 34% =========================================================================== == Patches == The intended semantics of the patches are broadly intended to match those of the corresponding Windows functions. For those not already familiar with the Windows functions (or their undocumented behaviour), patch 27/28 provides a detailed specification, and individual patches also include a brief description of the API they are implementing. The patches making use of this driver in Wine can be retrieved or browsed here: https://repo.or.cz/wine/zf.git/shortlog/refs/heads/ntsync5 == Previous versions == Changes from v4: * Rework wait-all locking code to avoid taking more than one spinlock at a time, and also to fix a race where the wait-all lock would not be not correctly taken. The new locking mechanism involves taking a simple spinlock for normal "any" waits, and taking a device-wide mutex for "all" waits or when locking any object that is involved in an "all" wait. The mechanism was written by Peter Zijlstra. * Try to reword or clarify various parts of the documentation (patch 27), per Peter Zijlstra. * I did not rename NTSYNC_IOC_SEM_POST to RELEASE (like NT) although this was suggested by Peter Zijlstra, mostly because it's not clear to me that renaming an already committed ioctl would be fine. The API committed isn't actually usable yet, though, so if altering it would be fine on those grounds, I can revise this series to rename the function accordingly. * Similarly, I did not change the create ioctls to return the fd directly, although this was suggested and would be a bit simpler and cleaner, because NTSYNC_IOC_CREATE_SEM already exists upstream and returns the fd through a struct. I can make this change in the next revision if that'd be preferable. I also still would appreciate a clarification on the advice in [1]. [1] https://docs.kernel.org/driver-api/ioctl.html#return-code * Link to v4: https://lore.kernel.org/lkml/20240416010837.333694-1-zfigura@codeweavers.co… * Link to v3: https://lore.kernel.org/lkml/20240329000621.148791-1-zfigura@codeweavers.co… * Link to v2: https://lore.kernel.org/lkml/20240219223833.95710-1-zfigura@codeweavers.com/ * Link to v1: https://lore.kernel.org/lkml/20240214233645.9273-1-zfigura@codeweavers.com/ * Link to RFC v2: https://lore.kernel.org/lkml/20240131021356.10322-1-zfigura@codeweavers.com/ * Link to RFC v1: https://lore.kernel.org/lkml/20240124004028.16826-1-zfigura@codeweavers.com/ Elizabeth Figura (28): ntsync: Introduce NTSYNC_IOC_WAIT_ANY. ntsync: Introduce NTSYNC_IOC_WAIT_ALL. ntsync: Introduce NTSYNC_IOC_CREATE_MUTEX. ntsync: Introduce NTSYNC_IOC_MUTEX_UNLOCK. ntsync: Introduce NTSYNC_IOC_MUTEX_KILL. ntsync: Introduce NTSYNC_IOC_CREATE_EVENT. ntsync: Introduce NTSYNC_IOC_EVENT_SET. ntsync: Introduce NTSYNC_IOC_EVENT_RESET. ntsync: Introduce NTSYNC_IOC_EVENT_PULSE. ntsync: Introduce NTSYNC_IOC_SEM_READ. ntsync: Introduce NTSYNC_IOC_MUTEX_READ. ntsync: Introduce NTSYNC_IOC_EVENT_READ. ntsync: Introduce alertable waits. selftests: ntsync: Add some tests for semaphore state. selftests: ntsync: Add some tests for mutex state. selftests: ntsync: Add some tests for NTSYNC_IOC_WAIT_ANY. selftests: ntsync: Add some tests for NTSYNC_IOC_WAIT_ALL. selftests: ntsync: Add some tests for wakeup signaling with WINESYNC_IOC_WAIT_ANY. selftests: ntsync: Add some tests for wakeup signaling with WINESYNC_IOC_WAIT_ALL. selftests: ntsync: Add some tests for manual-reset event state. selftests: ntsync: Add some tests for auto-reset event state. selftests: ntsync: Add some tests for wakeup signaling with events. selftests: ntsync: Add tests for alertable waits. selftests: ntsync: Add some tests for wakeup signaling via alerts. selftests: ntsync: Add a stress test for contended waits. maintainers: Add an entry for ntsync. docs: ntsync: Add documentation for the ntsync uAPI. ntsync: No longer depend on BROKEN. Documentation/userspace-api/index.rst | 1 + Documentation/userspace-api/ntsync.rst | 398 +++++ MAINTAINERS | 9 + drivers/misc/Kconfig | 1 - drivers/misc/ntsync.c | 989 +++++++++++- include/uapi/linux/ntsync.h | 39 + tools/testing/selftests/Makefile | 1 + .../selftests/drivers/ntsync/.gitignore | 1 + .../testing/selftests/drivers/ntsync/Makefile | 7 + tools/testing/selftests/drivers/ntsync/config | 1 + .../testing/selftests/drivers/ntsync/ntsync.c | 1407 +++++++++++++++++ 11 files changed, 2850 insertions(+), 4 deletions(-) create mode 100644 Documentation/userspace-api/ntsync.rst create mode 100644 tools/testing/selftests/drivers/ntsync/.gitignore create mode 100644 tools/testing/selftests/drivers/ntsync/Makefile create mode 100644 tools/testing/selftests/drivers/ntsync/config create mode 100644 tools/testing/selftests/drivers/ntsync/ntsync.c base-commit: f5b335dc025cfee90957efa90dc72fada0d5abb4 -- 2.43.0

4 months, 1 week

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[PATCH net-next v2] selftests: net: py: support verbose printing, display executed commands

by Mohsin Bashir

Add verbosity support to show the commands executed while running tests. Enable verbosity if either an environment variable 'VERBOSE' is set to a non-zero number or it is defined in a config file under driver tests as discussed here: https://github.com/linux-netdev/nipa/wiki/Running-driver-tests. Signed-off-by: Mohsin Bashir <mohsin.bashr(a)gmail.com> --- Changes in v2: - change verbosity_ctl to set_verbosity - remove redundency in the code v1: https://lore.kernel.org/netdev/20240715030723.1768360-1-mohsin.bashr@gmail.… .../selftests/drivers/net/lib/py/env.py | 6 ++++- .../testing/selftests/net/lib/py/__init__.py | 4 +++ tools/testing/selftests/net/lib/py/utils.py | 26 +++++++++++++++++++ 3 files changed, 35 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/drivers/net/lib/py/env.py b/tools/testing/selftests/drivers/net/lib/py/env.py index 1ea9bb695e94..c7cf52d9b988 100644 --- a/tools/testing/selftests/drivers/net/lib/py/env.py +++ b/tools/testing/selftests/drivers/net/lib/py/env.py @@ -5,7 +5,7 @@ import time from pathlib import Path from lib.py import KsftSkipEx, KsftXfailEx from lib.py import ksft_setup -from lib.py import cmd, ethtool, ip +from lib.py import cmd, ethtool, ip, set_verbosity from lib.py import NetNS, NetdevSimDev from .remote import Remote @@ -31,6 +31,10 @@ def _load_env_file(src_path): if len(pair) != 2: raise Exception("Can't parse configuration line:", full_file) env[pair[0]] = pair[1] + + env_level = env.get('VERBOSE') + set_verbosity(env_level) + return ksft_setup(env) diff --git a/tools/testing/selftests/net/lib/py/__init__.py b/tools/testing/selftests/net/lib/py/__init__.py index b6d498d125fe..eb4860dea26a 100644 --- a/tools/testing/selftests/net/lib/py/__init__.py +++ b/tools/testing/selftests/net/lib/py/__init__.py @@ -1,8 +1,12 @@ # SPDX-License-Identifier: GPL-2.0 +import os from .consts import KSRC from .ksft import * from .netns import NetNS from .nsim import * from .utils import * from .ynl import NlError, YnlFamily, EthtoolFamily, NetdevFamily, RtnlFamily + +env_level = os.environ.get('VERBOSE') +set_verbosity(env_level) diff --git a/tools/testing/selftests/net/lib/py/utils.py b/tools/testing/selftests/net/lib/py/utils.py index 72590c3f90f1..d475f131a598 100644 --- a/tools/testing/selftests/net/lib/py/utils.py +++ b/tools/testing/selftests/net/lib/py/utils.py @@ -8,11 +8,35 @@ import socket import subprocess import time +VERBOSITY_LEVEL = 0 + class CmdExitFailure(Exception): pass +def set_verbosity(level=None): + global VERBOSITY_LEVEL + + if level is not None: + try: + level = int(level) + except ValueError as e: + print(f'Ignoring \'VERBOSE\'. Unknown value \'{level}\'') + level = 0 + + VERBOSITY_LEVEL = level + + return VERBOSITY_LEVEL + + +def verbose(*objs, **kwargs): + global VERBOSITY_LEVEL + + if VERBOSITY_LEVEL >= 1: + print(*objs, **kwargs) + + class cmd: def __init__(self, comm, shell=True, fail=True, ns=None, background=False, host=None, timeout=5): if ns: @@ -22,6 +46,8 @@ class cmd: self.stderr = None self.ret = None + verbose("#cmd|", comm) + self.comm = comm if host: self.proc = host.cmd(comm) -- 2.43.5

4 months, 1 week

3
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[PATCH bpf-next v3 0/4] selftests/bpf: convert three other cgroup tests to test_progs

by Alexis Lothoré (eBPF Foundation)

Hello, this series brings a new set of test converted to the test_progs framework. Since the tests are quite small, I chose to group three tests conversion in the same series, but feel free to let me know if I should keep one series per test. The series focuses on cgroup testing and converts the following tests: - get_cgroup_id_user - cgroup_storage - test_skb_cgroup_id_user Signed-off-by: Alexis Lothoré (eBPF Foundation) <alexis.lothore(a)bootlin.com> --- Changes in v3: - Fixed multiple leaks on cgroup file descriptors and sockets - Used dedicated network namespaces for tests involving network - Link to v2: https://lore.kernel.org/r/20240806-convert_cgroup_tests-v2-0-180c57e5b710@b… Changes in v2: - Use global variables instead of maps when possible - Collect review tags from Alan - Link to v1: https://lore.kernel.org/r/20240731-convert_cgroup_tests-v1-0-14cbc51b6947@b… --- Alexis Lothoré (eBPF Foundation) (4): selftests/bpf: convert get_current_cgroup_id_user to test_progs selftests/bpf: convert test_cgroup_storage to test_progs selftests/bpf: add proper section name to bpf prog and rename it selftests/bpf: convert test_skb_cgroup_id_user to test_progs tools/testing/selftests/bpf/.gitignore | 3 - tools/testing/selftests/bpf/Makefile | 8 +- tools/testing/selftests/bpf/get_cgroup_id_user.c | 151 ----------------- .../selftests/bpf/prog_tests/cgroup_ancestor.c | 169 +++++++++++++++++++ .../bpf/prog_tests/cgroup_get_current_cgroup_id.c | 46 ++++++ .../selftests/bpf/prog_tests/cgroup_storage.c | 94 +++++++++++ ...test_skb_cgroup_id_kern.c => cgroup_ancestor.c} | 14 +- tools/testing/selftests/bpf/progs/cgroup_storage.c | 24 +++ .../selftests/bpf/progs/get_cgroup_id_kern.c | 26 +-- tools/testing/selftests/bpf/test_cgroup_storage.c | 174 -------------------- tools/testing/selftests/bpf/test_skb_cgroup_id.sh | 63 ------- .../selftests/bpf/test_skb_cgroup_id_user.c | 183 --------------------- 12 files changed, 342 insertions(+), 613 deletions(-) --- base-commit: ab2c4aa104050a184c3411a973b165285549f732 change-id: 20240725-convert_cgroup_tests-d07c66053225 Best regards, -- Alexis Lothoré, Bootlin Embedded Linux and Kernel engineering https://bootlin.com

4 months, 1 week

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[PATCH] kselftest/cgroup: Add missing newline in test_zswap.c

by Mohammed Anees

Signed-off-by: Mohammed Anees <pvmohammedanees2003(a)gmail.com> --- tools/testing/selftests/cgroup/test_zswap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/cgroup/test_zswap.c b/tools/testing/selftests/cgroup/test_zswap.c index 190096017..7c849d836 100644 --- a/tools/testing/selftests/cgroup/test_zswap.c +++ b/tools/testing/selftests/cgroup/test_zswap.c @@ -351,7 +351,7 @@ static int test_zswap_writeback(const char *root, bool wb) goto out; if (wb != !!zswpwb_after) { - ksft_print_msg("zswpwb_after is %ld while wb is %s", + ksft_print_msg("zswpwb_after is %ld while wb is %s\n", zswpwb_after, wb ? "enabled" : "disabled"); goto out; } -- 2.43.0

4 months, 1 week

2
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[PATCH bpf-next v2 0/4] selftests/bpf: convert three other cgroup tests to test_progs

by Alexis Lothoré (eBPF Foundation)

Hello, this series brings a new set of test converted to the test_progs framework. Since the tests are quite small, I chose to group three tests conversion in the same series, but feel free to let me know if I should keep one series per test. The series focuses on cgroup testing and converts the following tests: - get_cgroup_id_user - cgroup_storage - test_skb_cgroup_id_user Signed-off-by: Alexis Lothoré (eBPF Foundation) <alexis.lothore(a)bootlin.com> --- Changes in v2: - Use global variables instead of maps when possible - Collect review tags from Alan - Link to v1: https://lore.kernel.org/r/20240731-convert_cgroup_tests-v1-0-14cbc51b6947@b… --- Alexis Lothoré (eBPF Foundation) (4): selftests/bpf: convert get_current_cgroup_id_user to test_progs selftests/bpf: convert test_cgroup_storage to test_progs selftests/bpf: add proper section name to bpf prog and rename it selftests/bpf: convert test_skb_cgroup_id_user to test_progs tools/testing/selftests/bpf/.gitignore | 3 - tools/testing/selftests/bpf/Makefile | 8 +- tools/testing/selftests/bpf/get_cgroup_id_user.c | 151 ----------------- .../selftests/bpf/prog_tests/cgroup_ancestor.c | 154 +++++++++++++++++ .../bpf/prog_tests/cgroup_get_current_cgroup_id.c | 45 +++++ .../selftests/bpf/prog_tests/cgroup_storage.c | 65 ++++++++ ...test_skb_cgroup_id_kern.c => cgroup_ancestor.c} | 14 +- tools/testing/selftests/bpf/progs/cgroup_storage.c | 24 +++ .../selftests/bpf/progs/get_cgroup_id_kern.c | 26 +-- tools/testing/selftests/bpf/test_cgroup_storage.c | 174 -------------------- tools/testing/selftests/bpf/test_skb_cgroup_id.sh | 63 ------- .../selftests/bpf/test_skb_cgroup_id_user.c | 183 --------------------- 12 files changed, 297 insertions(+), 613 deletions(-) --- base-commit: 34dbece299dfc462db4504268a697f29750d2932 change-id: 20240725-convert_cgroup_tests-d07c66053225 Best regards, -- Alexis Lothoré, Bootlin Embedded Linux and Kernel engineering https://bootlin.com

4 months, 1 week

3
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[PATCH v2] selftests: memfd_secret: don't build memfd_secret test on unsupported arches

by Muhammad Usama Anjum

[1] mentions that memfd_secret is only supported on arm64, riscv, x86 and x86_64 for now. It doesn't support other architectures. I found the build error on arm and decided to send the fix as it was creating noise on KernelCI: memfd_secret.c: In function 'memfd_secret': memfd_secret.c:42:24: error: '__NR_memfd_secret' undeclared (first use in this function); did you mean 'memfd_secret'? 42 | return syscall(__NR_memfd_secret, flags); | ^~~~~~~~~~~~~~~~~ | memfd_secret Hence I'm adding condition that memfd_secret should only be compiled on supported architectures. Also check in run_vmtests script if memfd_secret binary is present before executing it. [1] https://lore.kernel.org/all/20210518072034.31572-7-rppt@kernel.org/ Cc: stable(a)vger.kernel.org Fixes: 76fe17ef588a ("secretmem: test: add basic selftest for memfd_secret(2)") Reviewed-by: Shuah Khan <skhan(a)linuxfoundation.org> Acked-by: Mike Rapoport (Microsoft) <rppt(a)kernel.org> Signed-off-by: Muhammad Usama Anjum <usama.anjum(a)collabora.com> --- Changes since v1: - Add error message to the patch and reviewed-by tags --- tools/testing/selftests/mm/Makefile | 2 ++ tools/testing/selftests/mm/run_vmtests.sh | 3 +++ 2 files changed, 5 insertions(+) diff --git a/tools/testing/selftests/mm/Makefile b/tools/testing/selftests/mm/Makefile index 1a83b70e84535..4ea188be0588a 100644 --- a/tools/testing/selftests/mm/Makefile +++ b/tools/testing/selftests/mm/Makefile @@ -53,7 +53,9 @@ TEST_GEN_FILES += madv_populate TEST_GEN_FILES += map_fixed_noreplace TEST_GEN_FILES += map_hugetlb TEST_GEN_FILES += map_populate +ifneq (,$(filter $(ARCH),arm64 riscv riscv64 x86 x86_64)) TEST_GEN_FILES += memfd_secret +endif TEST_GEN_FILES += migration TEST_GEN_FILES += mkdirty TEST_GEN_FILES += mlock-random-test diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh index 03ac4f2e1cce6..36045edb10dea 100755 --- a/tools/testing/selftests/mm/run_vmtests.sh +++ b/tools/testing/selftests/mm/run_vmtests.sh @@ -374,8 +374,11 @@ CATEGORY="hmm" run_test bash ./test_hmm.sh smoke # MADV_POPULATE_READ and MADV_POPULATE_WRITE tests CATEGORY="madv_populate" run_test ./madv_populate +if [ -x ./memfd_secret ] +then (echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope 2>&1) | tap_prefix CATEGORY="memfd_secret" run_test ./memfd_secret +fi # KSM KSM_MERGE_TIME_HUGE_PAGES test with size of 100 CATEGORY="ksm" run_test ./ksm_tests -H -s 100 -- 2.39.2

4 months, 1 week

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[PATCH] selftest/powerpc/benchmark: remove requirement libc-dev

by Madhavan Srinivasan

Currently exec-target.c file is linked as static and this post a requirement to install libc dev package to build. Without it, build-breaks when compiling selftest/powerpc/benchmark. CC exec_target /usr/bin/ld: cannot find -lc: No such file or directory collect2: error: ld returned 1 exit status exec_target.c is using "syscall" library function which could be replaced with a inline assembly and the same is proposed as a fix here. Suggested-by: Michael Ellerman <mpe(a)ellerman.id.au> Signed-off-by: Madhavan Srinivasan <maddy(a)linux.ibm.com> --- tools/testing/selftests/powerpc/benchmarks/Makefile | 2 +- .../testing/selftests/powerpc/benchmarks/exec_target.c | 10 ++++++++-- 2 files changed, 9 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/powerpc/benchmarks/Makefile b/tools/testing/selftests/powerpc/benchmarks/Makefile index 1321922038d0..ca4483c238b9 100644 --- a/tools/testing/selftests/powerpc/benchmarks/Makefile +++ b/tools/testing/selftests/powerpc/benchmarks/Makefile @@ -18,4 +18,4 @@ $(OUTPUT)/context_switch: LDLIBS += -lpthread $(OUTPUT)/fork: LDLIBS += -lpthread -$(OUTPUT)/exec_target: CFLAGS += -static -nostartfiles +$(OUTPUT)/exec_target: CFLAGS += -nostartfiles diff --git a/tools/testing/selftests/powerpc/benchmarks/exec_target.c b/tools/testing/selftests/powerpc/benchmarks/exec_target.c index c14b0fc1edde..20027a23b594 100644 --- a/tools/testing/selftests/powerpc/benchmarks/exec_target.c +++ b/tools/testing/selftests/powerpc/benchmarks/exec_target.c @@ -7,10 +7,16 @@ */ #define _GNU_SOURCE -#include <unistd.h> #include <sys/syscall.h> void _start(void) { - syscall(SYS_exit, 0); + asm volatile ( + "li %%r0, %[sys_exit];" + "li %%r3, 0;" + "sc;" + : + : [sys_exit] "i" (SYS_exit) + : "r0", "r3" + ); } -- 2.45.2

4 months, 1 week

3
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[PATCH 1/2] selftests: rust: config: add trailing newline

by Anders Roxell

If adding multiple config files to the merge_config.sh script and rust/config is the fist one, then the last config fragment in this file and the first config fragment in the second file wont be set, since there isn't a newline in this file, so those two fragements end up at the same row like: CONFIG_SAMPLE_RUST_PRINT=mCONFIG_FRAGMENT=y And non of those will be enabled when running 'olddefconfig' after. Fixing the issue by adding a newline to the file. Signed-off-by: Anders Roxell <anders.roxell(a)linaro.org> --- tools/testing/selftests/rust/config | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/rust/config b/tools/testing/selftests/rust/config index b4002acd40bc..fa06cebae232 100644 --- a/tools/testing/selftests/rust/config +++ b/tools/testing/selftests/rust/config @@ -2,4 +2,4 @@ CONFIG_RUST=y CONFIG_SAMPLES=y CONFIG_SAMPLES_RUST=y CONFIG_SAMPLE_RUST_MINIMAL=m -CONFIG_SAMPLE_RUST_PRINT=m \ No newline at end of file +CONFIG_SAMPLE_RUST_PRINT=m -- 2.43.0

4 months, 1 week

3
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Linux-kselftest-mirror August 2024