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| author |   John Stultz <john.stultz@linaro.org> | 2015-10-05 18:16:57 -0700 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2015-10-12 09:51:34 +0200 |
| commit | 6035519fcf5aa17084b41790cdc584d881d82c03 (patch) | |
| tree | 03fbc8affa4508d51d6370ee8fcb2e9e4e0d2b6e /tools/testing/selftests/timers/Makefile | |
| parent | Merge tag 'v4.3-rc5' into timers/core, to pick up fixes before applying new changes (diff) | |
| download | linux-dev-6035519fcf5aa17084b41790cdc584d881d82c03.tar.xz linux-dev-6035519fcf5aa17084b41790cdc584d881d82c03.zip | |
timers, kselftest: Add 'adjtick' test to validate adjtimex() tick adjustments
Recently a kernel side NTP bug was fixed via the following commit:
2619d7e9c92d ("time: Fix timekeeping_freqadjust()'s incorrect use of abs() instead of abs64()")
When the bug was reported it was difficult to detect, except by
tweaking the adjtimex tick value, and noticing how quickly the
adjustment took:
https://lkml.org/lkml/2015/9/1/488
Thus this patch introduces a new test which manipulates the
adjtimex tick value and validates that the results are what we
expect.
Signed-off-by: John Stultz <john.stultz@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Miroslav Lichvar <mlichvar@redhat.com>
Cc: Nuno Gonçalves <nunojpg@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1444094217-20258-1-git-send-email-john.stultz@linaro.org
[ Tidied up the code and the changelog a bit. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/testing/selftests/timers/Makefile')
| -rw-r--r-- | tools/testing/selftests/timers/Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/testing/selftests/timers/Makefile b/tools/testing/selftests/timers/Makefile index 89a3f44bf355..4a1be1b75a7f 100644 --- a/tools/testing/selftests/timers/Makefile +++ b/tools/testing/selftests/timers/Makefile @@ -8,7 +8,7 @@ LDFLAGS += -lrt -lpthread TEST_PROGS = posix_timers nanosleep nsleep-lat set-timer-lat mqueue-lat \ inconsistency-check raw_skew threadtest rtctest -TEST_PROGS_EXTENDED = alarmtimer-suspend valid-adjtimex change_skew \ +TEST_PROGS_EXTENDED = alarmtimer-suspend valid-adjtimex adjtick change_skew \ skew_consistency clocksource-switch leap-a-day \ leapcrash set-tai set-2038 @@ -24,6 +24,7 @@ include ../lib.mk run_destructive_tests: run_tests ./alarmtimer-suspend ./valid-adjtimex + ./adjtick ./change_skew ./skew_consistency ./clocksource-switch |