linux/tools/testing/selftests/timers/freq-step.c, branch v5.3

kselftests: timers: freq-step: Update maximum acceptable precision and errors

2019-06-22T09:28:53Z

PTI has a significant impact on precision of the MONOTONIC_RAW clock, which prevents a lot of computers from running the freq-step test. Increase the maximum acceptable precision for the test to not be skipped to 500 nanoseconds. After commit 78b98e3c5a66 ("timekeeping/ntp: Determine the multiplier directly from NTP tick length") the frequency and time errors should be much smaller. Reduce the maximum acceptable values for the test to pass to 0.02 ppm and 50 nanoseconds respectively. Signed-off-by: Miroslav Lichvar Signed-off-by: Thomas Gleixner Cc: John Stultz Cc: Prarit Bhargava Cc: Richard Cochran Cc: Stephen Boyd Link: https://lkml.kernel.org/r/20190618160612.21957-1-mlichvar@redhat.com

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295

2019-06-05T15:36:38Z

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of version 2 of the gnu general public license as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 64 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Alexios Zavras Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141901.894819585@linutronix.de Signed-off-by: Greg Kroah-Hartman

Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-09-04T20:06:34Z

Pull timer fixes from Thomas Gleixner: "A rather small update for the time(r) subsystem: - A new clocksource driver IMX-TPM - Minor fixes to the alarmtimer facility - Device tree cleanups for Renesas drivers - A new kselftest and fixes for the timer related tests - Conversion of the clocksource drivers to use %pOF - Use the proper helpers to access rlimits in the posix-cpu-timer code" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: alarmtimer: Ensure RTC module is not unloaded clocksource: Convert to using %pOF instead of full_name clocksource/drivers/bcm2835: Remove message for a memory allocation failure devicetree: bindings: Remove deprecated properties devicetree: bindings: Remove unused 32-bit CMT bindings devicetree: bindings: Deprecate property, update example devicetree: bindings: r8a73a4 and R-Car Gen2 CMT bindings devicetree: bindings: R-Car Gen2 CMT0 and CMT1 bindings devicetree: bindings: Remove sh7372 CMT binding clocksource/drivers/imx-tpm: Add imx tpm timer support dt-bindings: timer: Add nxp tpm timer binding doc posix-cpu-timers: Use dedicated helper to access rlimit values alarmtimer: Fix unavailable wake-up source in sysfs timekeeping: Use proper timekeeper for debug code kselftests: timers: set-timer-lat: Add one-shot timer test cases kselftests: timers: set-timer-lat: Tweak reporting when timer fires early kselftests: timers: freq-step: Fix build warning kselftests: timers: freq-step: Define ADJ_SETOFFSET if device has older kernel headers

kselftests: timers: freq-step: Fix build warning

2017-08-17T19:14:48Z

Fixes the following build warning: freq-step.c: In function ‘main’: freq-step.c:271:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ By returning the return values from ksft_success/fail. Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Miroslav Lichvar Cc: Richard Cochran Cc: Prarit Bhargava Cc: Stephen Boyd Cc: Shuah Khan Cc: linux-kselftest@vger.kernel.org Signed-off-by: John Stultz

kselftests: timers: freq-step: Define ADJ_SETOFFSET if device has older kernel headers

2017-08-17T19:14:42Z

On some systems, the kernel headers haven't been updated to include ADJ_SETOFFSET, so define it in the test if needed. Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Miroslav Lichvar Cc: Richard Cochran Cc: Prarit Bhargava Cc: Stephen Boyd Cc: Shuah Khan Cc: linux-kselftest@vger.kernel.org Signed-off-by: John Stultz

selftests: timers: freq-step: fix compile error

2017-08-11T15:28:37Z

Fix compile error due to ksft_exit_skip() update to take var_args. freq-step.c: In function ‘init_test’: freq-step.c:234:3: error: too few arguments to function ‘ksft_exit_skip’ ksft_exit_skip(); ^~~~~~~~~~~~~~ In file included from freq-step.c:26:0: ../kselftest.h:167:19: note: declared here static inline int ksft_exit_skip(const char *msg, ...) ^~~~~~~~~~~~~~ : recipe for target 'freq-step' failed Signed-off-by: Shuah Khan

kselftests: timers: Add test for frequency step

2017-06-21T05:14:45Z

This test checks the response of the system clock to frequency steps made with adjtimex(). The frequency error and stability of the CLOCK_MONOTONIC clock relative to the CLOCK_MONOTONIC_RAW clock is measured in two intervals following the step. The test fails if values from the second interval exceed specified limits. Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Miroslav Lichvar Cc: Richard Cochran Cc: Prarit Bhargava Cc: Stephen Boyd Cc: Shuah Khan Signed-off-by: Miroslav Lichvar Signed-off-by: John Stultz