John Stultz 6035519fcf 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>

2015-10-12 09:51:34 +02:00

..

.gitignore

selftests/timers: Make git ignore all binaries in timers test suite

2015-05-26 15:58:06 -06:00

adjtick.c

timers, kselftest: Add 'adjtick' test to validate adjtimex() tick adjustments

2015-10-12 09:51:34 +02:00

alarmtimer-suspend.c

kselftests: timers: Check _ALARM clockids are supported before suspending

2015-05-26 15:58:07 -06:00

change_skew.c

selftests/timers: Add change_skew test from timetest suite

2015-03-12 13:22:15 -06:00

clocksource-switch.c

selftests/timers: Add clocksource-switch test from timetest suite

2015-03-12 13:22:15 -06:00

inconsistency-check.c

kselftests: timers: Reduce default runtime on inconsistency-check and set-timer-lat

2015-03-31 13:44:32 -06:00

leap-a-day.c

selftest: Timers: Avoid signal deadlock in leap-a-day

2015-06-18 15:28:14 +02:00

leapcrash.c

selftests/timers: Add leapcrash test from the timetest suite

2015-03-12 13:22:16 -06:00

Makefile

timers, kselftest: Add 'adjtick' test to validate adjtimex() tick adjustments

2015-10-12 09:51:34 +02:00

mqueue-lat.c

selftests/timers: Add mqueue latency test from the timetest suite

2015-03-12 13:22:14 -06:00

nanosleep.c

selftests/timers: Add nanosleep test from timetest suite

2015-03-12 13:22:13 -06:00

nsleep-lat.c

selftests/timers: Add nsleep-lat test from timetest suite

2015-03-12 13:22:13 -06:00

posix_timers.c

selftests/timers: Quiet warning due to lack of return check on brk

2015-03-12 13:22:12 -06:00

raw_skew.c

selftests/timers: Add clock skew estimation test from timetest suite

2015-03-12 13:22:13 -06:00

rtctest.c

tools, update rtctest.c to verify passage of time

2015-03-24 22:02:59 -06:00

set-2038.c

selftests/timers: Add set-2038 test from timetest suite

2015-03-12 13:22:16 -06:00

set-tai.c

selftests/timers: Add set-tai from the timetest suite

2015-03-12 13:22:16 -06:00

set-timer-lat.c

kselftests: timers: Make set-timer-lat fail more gracefully for !CAP_WAKE_ALARM

2015-04-02 10:32:33 -06:00

skew_consistency.c

selftests/timers: Add skew_consistency test from the timetests suite

2015-03-12 13:22:15 -06:00

threadtest.c

kselftest/timers: Set default threadtest values to simplify execution scripts

2015-03-19 12:03:34 -06:00

valid-adjtimex.c

selftests/timers: Add adjtimex validation test from timetest suite

2015-03-12 13:22:14 -06:00