kernel/linux.git/tools/testing/selftests/timers, branch v6.18.21

selftests/timers: Improve skew_consistency by testing with other clockids

2025-03-21T18:16:18+00:00

Lei Chen reported a bug with CLOCK_MONOTONIC_COARSE having inconsistencies when NTP is adjusting the clock frequency. This has gone seemingly undetected for ~15 years, illustrating a clear gap in our testing. The skew_consistency test is intended to catch this sort of problem, but was focused on only evaluating CLOCK_MONOTONIC, and thus missed the problem on CLOCK_MONOTONIC_COARSE. So adjust the test to run with all clockids for 60 seconds each instead of 10 minutes with just CLOCK_MONOTONIC. Reported-by: Lei Chen Signed-off-by: John Stultz Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/all/20250320200306.1712599-2-jstultz@google.com Closes: https://lore.kernel.org/lkml/20250310030004.3705801-1-lei.chen@smartx.com/

selftests/timers/posix-timers: Add a test for exact allocation mode

2025-03-13T11:07:18+00:00

The exact timer ID allocation mode is used by CRIU to restore timers with a given ID. Add a test case for it. It's skipped on older kernels when the prctl() fails. Signed-off-by: Thomas Gleixner Reviewed-by: Frederic Weisbecker Link: https://lore.kernel.org/all/8734fl2tkx.ffs@tglx

selftests: timers: clocksource-switch: Adapt progress to kselftest framework

2025-01-15T00:06:31+00:00

When adapting the test to the kselftest framework, a few printf() calls indicating test progress were not updated. Fix this by replacing these printf() calls by ksft_print_msg() calls. Link: https://lore.kernel.org/r/7dd4b9ab6e43268846e250878ebf25ae6d3d01ce.1733994134.git.geert+renesas@glider.be Fixes: ce7d101750ff ("selftests: timers: clocksource-switch: adapt to kselftest framework") Signed-off-by: Geert Uytterhoeven Reviewed-by: Thomas Gleixner Signed-off-by: Shuah Khan

selftests:timers: remove local CLOCKID defines

2024-10-14T22:15:13+00:00

timers tests defines CLOCKIDs locally. Remove all local CLOCKIDs except CLOCK_HWSPECIFIC and use defines from time.h header file. CLOCK_HWSPECIFIC and CLOCK_SGI_CYCLE are the same and CLOCK_SGI_CYCLE is deprecated, Signed-off-by: Shuah Khan Acked-by: John Stultz Signed-off-by: Shuah Khan

selftests: timers: Remove unneeded semicolon

2024-10-14T22:15:13+00:00

Remove unnecessary semicolons reported by Coccinelle/coccicheck and the semantic patch at scripts/coccinelle/misc/semicolon.cocci. Signed-off-by: Chen Ni Acked-by: John Stultz Signed-off-by: Shuah Khan

selftests: timers: improve timer_create failure message

2024-10-14T22:15:12+00:00

improve timer_create failure message with strerror() function to give more information to the user. Signed-off-by: Gianfranco Trad Acked-by: John Stultz Signed-off-by: Shuah Khan

selftests: timers: Remove local NSEC_PER_SEC and USEC_PER_SEC defines

2024-10-14T22:15:12+00:00

Remove local NSEC_PER_SEC and USEC_PER_SEC defines. Pick them up from include/vdso/time64.h. This requires -I $(top_srcdir) to the timers Makefile to include the include/vdso/time64.h. posix_timers test names the defines NSECS_PER_SEC and USECS_PER_SEC. Change posix_timers test references to the defines to match the defines in the header file. Signed-off-by: Shuah Khan Acked-by: John Stultz Acked-by: Thomas Gleixner Signed-off-by: Shuah Khan

selftests:timers: posix_timers: Fix warn_unused_result in __fatal_error()

2024-09-30T17:37:55+00:00

__fatal_error routine doesn't check strerror_r() return value, which results in the following compile time warning: posix_timers.c: In function ‘__fatal_error’: posix_timers.c:31:9: warning: ignoring return value of ‘strerror_r’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 31 | strerror_r(errno, buf, sizeof(buf)); Fix this by adding a check for return value and error handling appropriate for the GNU-specific strerror_r() in use in __fatal_error(). Check if return string is null and handle accordingly. From Linux strerror_r() manual page: "The GNU-specific strerror_r() returns a pointer to a string containing the error message. This may be either a pointer to a string that the function stores in buf, or a pointer to some (immutable) static string (in which case buf is unused). If the function stores a string in buf, then at most buflen bytes are stored (the string may be truncated if buflen is too small and errnum is unknown). The string always includes a terminating null byte." Signed-off-by: Shuah Khan Acked-by: John Stultz Acked-by: Thomas Gleixner Signed-off-by: Shuah Khan

Merge tag 'linux_kselftest-next-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

2024-09-17T14:49:56+00:00

Pull kselftest update from Shuah Khan: - test coverage for dup_fd() failure handling in unshare_fd() - new selftest for the acct() syscall - basic uprobe testcase - several small fixes and cleanups to existing tests - user and strscpy removal as they became kunit tests - fixes to build failures and warnings * tag 'linux_kselftest-next-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (21 commits) selftests: kselftest: Use strerror() on nolibc selftests/timers: Remove unused NSEC_PER_SEC macro selftests:resctrl: Fix build failure on archs without __cpuid_count() selftests/ftrace: Fix eventfs ownership testcase to find mount point selftests: filesystems: fix warn_unused_result build warnings selftests:core: test coverage for dup_fd() failure handling in unshare_fd() selftests/ftrace: Fix test to handle both old and new kernels kselftest: timers: Fix const correctness selftests/ftrace: Add required dependency for kprobe tests selftests: rust: config: disable GCC_PLUGINS selftests: rust: config: add trailing newline tracing/selftests: Run the ownership test twice selftests/uprobes: Add a basic uprobe testcase selftests: harness: rename __constructor_order for clarification selftests: harness: remove unneeded __constructor_order_last() selftest: acct: Add selftest for the acct() syscall selftests: lib: remove strscpy test selftests: user: remove user suite kselftest: cpufreq: Add RTC wakeup alarm selftests/exec: Fix grammar in an error message. ...

selftests/timers: Remove unused NSEC_PER_SEC macro

2024-09-06T19:37:41+00:00

By reading the code, I found the macro NSEC_PER_SEC is never referenced in the code. Just remove it. Signed-off-by: zhang jiao Reviewed-by: Shuah Khan Acked-by: John Stultz Signed-off-by: Shuah Khan