[PATCH 00/19 v3] Add timekeeping tests to kernel selftest

[John Stultz]

I've hosted my timekeeping tests on github for the last few years:
	https://github.com/johnstultz-work/timetests

but I suspect not too many folks have actually used them.

I've been meaning to get them reworked and submitted into the
selftest infrastructure, but haven't had much time until
recently.

I've added both the non-desctructive and destructive tests
(which set the time, possibly to strange values, or tries
to trigger historical issues that could crash the machine).
The destructive tests are run (as root, or with proper
privledge) via:
	# make run_destructive_tests

Changes in v3:
* Lots of -Wall build warning fixups
* Handle the CROSS_COMPILER build variable properly
 (Thanks to LinusW for pointing that out)
* Integrate w/ ksft_exit_* infrastructure

Let me know if there is any further comments or feedback!

thanks
-john

Cc: Shuah Khan <shuahkh@xxxxxxxxxxxxxxx>
Cc: Prarit Bhargava <prarit@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Richard Cochran <richardcochran@xxxxxxxxx>

John Stultz (19):
  selftests/timers: Cleanup Makefile to make it easier to add future
    tests
  selftests/timers: Quiet warning due to lack of return check on brk
  selftests/timers: Add nanosleep test from timetest suite
  selftests/timers: Add inconsistency-check test from timetests
  selftests/timers: Add nsleep-lat test from timetest suite
  selftests/timers: Add clock skew estimation test from timetest suite
  selftests/timers: Add set-timer-lat test from timetest suite
  selftests/timers: Add threaded time inconsistency test from timetest
    suite
  selftests/timers: Add mqueue latency test from the timetest suite
  selftests/timers: Add adjtimex validation test from timetest suite
  selftests/timers: Add alarmtimer-suspend test from timetests suite
  selftests/timers: Add change_skew test from timetest suite
  selftests/timers: Add skew_consistency test from the timetests suite
  selftests/timers: Add clocksource-switch test from timetest suite
  selftests/timers: Add leap-a-day test from timetest suite
  selftests/timers: Add leapcrash test from the timetest suite
  selftests/timers: Add set-tai from the timetest suite
  selftests/timers: Add set-2038 test from timetest suite
  MAINTAINERS: Add selftests/timers to the timekeeping maintainance list

 MAINTAINERS                                        |   1 +
 tools/testing/selftests/timers/Makefile            |  37 ++-
 .../testing/selftests/timers/alarmtimer-suspend.c  | 186 ++++++++++++
 tools/testing/selftests/timers/change_skew.c       | 107 +++++++
 .../testing/selftests/timers/clocksource-switch.c  | 179 ++++++++++++
 .../testing/selftests/timers/inconsistency-check.c | 207 +++++++++++++
 tools/testing/selftests/timers/leap-a-day.c        | 323 +++++++++++++++++++++
 tools/testing/selftests/timers/leapcrash.c         | 120 ++++++++
 tools/testing/selftests/timers/mqueue-lat.c        | 124 ++++++++
 tools/testing/selftests/timers/nanosleep.c         | 174 +++++++++++
 tools/testing/selftests/timers/nsleep-lat.c        | 190 ++++++++++++
 tools/testing/selftests/timers/posix_timers.c      |   9 +-
 tools/testing/selftests/timers/raw_skew.c          | 154 ++++++++++
 tools/testing/selftests/timers/set-2038.c          | 147 ++++++++++
 tools/testing/selftests/timers/set-tai.c           |  79 +++++
 tools/testing/selftests/timers/set-timer-lat.c     | 210 ++++++++++++++
 tools/testing/selftests/timers/skew_consistency.c  |  89 ++++++
 tools/testing/selftests/timers/threadtest.c        | 202 +++++++++++++
 tools/testing/selftests/timers/valid-adjtimex.c    | 204 +++++++++++++
 19 files changed, 2734 insertions(+), 8 deletions(-)
 create mode 100644 tools/testing/selftests/timers/alarmtimer-suspend.c
 create mode 100644 tools/testing/selftests/timers/change_skew.c
 create mode 100644 tools/testing/selftests/timers/clocksource-switch.c
 create mode 100644 tools/testing/selftests/timers/inconsistency-check.c
 create mode 100644 tools/testing/selftests/timers/leap-a-day.c
 create mode 100644 tools/testing/selftests/timers/leapcrash.c
 create mode 100644 tools/testing/selftests/timers/mqueue-lat.c
 create mode 100644 tools/testing/selftests/timers/nanosleep.c
 create mode 100644 tools/testing/selftests/timers/nsleep-lat.c
 create mode 100644 tools/testing/selftests/timers/raw_skew.c
 create mode 100644 tools/testing/selftests/timers/set-2038.c
 create mode 100644 tools/testing/selftests/timers/set-tai.c
 create mode 100644 tools/testing/selftests/timers/set-timer-lat.c
 create mode 100644 tools/testing/selftests/timers/skew_consistency.c
 create mode 100644 tools/testing/selftests/timers/threadtest.c
 create mode 100644 tools/testing/selftests/timers/valid-adjtimex.c

-- 
1.9.1

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