user/sven/linux.git/kernel/time/clocksource.c, branch v4.10

clocksource: Use a plain u64 instead of cycle_t

2016-12-25T10:04:12Z

There is no point in having an extra type for extra confusion. u64 is unambiguous. Conversion was done with the following coccinelle script: @rem@ @@ -typedef u64 cycle_t; @fix@ typedef cycle_t; @@ -cycle_t +u64 Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: John Stultz

clocksource: export the clocks_calc_mult_shift to use by timestamp code

2016-12-07T16:13:48Z

The CPSW CPTS driver is capable of doing timestamping on tx/rx packets and requires to know mult and shift factors for timestamp conversion from raw value to nanoseconds (ptp clock). Now these mult and shift factors are calculated manually and provided through DT, which makes very hard to support of a lot number of platforms, especially if CPTS refclk is not the same for some kind of boards and depends on efuse settings (Keystone 2 platforms). Hence, export clocks_calc_mult_shift() to allow drivers like CPSW CPTS (and other ptp drivesr) to benefit from automaitc calculation of mult and shift factors. Cc: John Stultz Signed-off-by: Murali Karicheri Signed-off-by: Grygorii Strashko Acked-by: Thomas Gleixner Signed-off-by: David S. Miller

clocksource: Defer override invalidation unless clock is unstable

2016-08-31T21:43:33Z

Clocksources don't get the VALID_FOR_HRES flag until they have been checked by a watchdog. However, when using an override, the clocksource_select logic will clear the override value if the clocksource is not marked VALID_FOR_HRES during that inititial check. When using the boot arguments clocksource=, this selection can run before the watchdog, and can cause the override to be incorrectly cleared. To address this condition, the override_name is only invalidated for unstable clocksources. Otherwise, the override is left intact until after the watchdog has validated the clocksource as stable/unstable. Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Richard Cochran Cc: Prarit Bhargava Cc: Martin Schwidefsky Signed-off-by: Kyle Walker Signed-off-by: John Stultz

clocksource: Make clocksource insert entry more efficient

2016-06-20T19:46:34Z

In clocksource_enqueue(), it is unnecessary to continue looping the list, if we find there is an entry that the value of rating is smaller than the new one. It is safe to be out the loop, because all of entry are inserted in descending order. Cc: Prarit Bhargava Cc: Richard Cochran Cc: Thomas Gleixner Cc: Ingo Molnar Signed-off-by: Minfei Huang Signed-off-by: John Stultz

clocksource: Allow unregistering the watchdog

2016-01-27T11:38:05Z

Hyper-V vmbus module registers TSC page clocksource when loaded. This is the clocksource with the highest rating and thus it becomes the watchdog making unloading of the vmbus module impossible. Separate clocksource_select_watchdog() from clocksource_enqueue_watchdog() and use it on clocksource register/rating change/unregister. After all, lobotomized monkeys may need some love too. Signed-off-by: Vitaly Kuznetsov Cc: John Stultz Cc: Dexuan Cui Cc: K. Y. Srinivasan Link: http://lkml.kernel.org/r/1453483913-25672-1-git-send-email-vkuznets@redhat.com Signed-off-by: Thomas Gleixner

clocksource: Add CPU info to clocksource watchdog reporting

2015-12-07T20:15:28Z

The clocksource watchdog reporting was improved by 0b046b217ad4c6. I want to add the info of CPU where the watchdog detects a deviation because it is necessary to identify the trouble spot if the clocksource is TSC. Signed-off-by: Seiichi Ikarashi [jstultz: Tweaked commit message] Signed-off-by: John Stultz

remove abs64()

2015-11-09T23:11:24Z

Switch everything to the new and more capable implementation of abs(). Mainly to give the new abs() a bit of a workout. Cc: Michal Nazarewicz Cc: John Stultz Cc: Ingo Molnar Cc: Steven Rostedt Cc: Peter Zijlstra Cc: Masami Hiramatsu Cc: Peter Zijlstra Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge tag 'v4.3-rc5' into timers/core, to pick up fixes before applying new changes

2015-10-12T07:51:18Z

Signed-off-by: Ingo Molnar

clocksource: Remove return statement from void functions

2015-10-11T20:13:46Z

Signed-off-by: Guillaume Gomez Cc: John Stultz Link: http://lkml.kernel.org/r/CAAOQCfSDgmqSWDBsetau%2ByF8x0%2BDagCF_pfFw0p5xH_BKkKEog@mail.gmail.com Signed-off-by: Thomas Gleixner

clocksource: Fix abs() usage w/ 64bit values

2015-10-02T20:53:01Z

This patch fixes one cases where abs() was being used with 64-bit nanosecond values, where the result may be capped at 32-bits. This potentially could cause watchdog false negatives on 32-bit systems, so this patch addresses the issue by using abs64(). Signed-off-by: John Stultz Cc: Prarit Bhargava Cc: Richard Cochran Cc: Ingo Molnar Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1442279124-7309-2-git-send-email-john.stultz@linaro.org Signed-off-by: Thomas Gleixner