user/sven/linux.git/kernel/time/clocksource.c, branch v3.10.81

kernel-time: fix s/then/than/ spelling errors

2012-03-23T23:49:21Z

Use than for comparisons, like more than. CC: John Stultz Signed-off-by: Jim Cromie Signed-off-by: John Stultz

Merge branch 'driver-core-next' into Linux 3.2

2012-01-06T19:42:52Z

This resolves the conflict in the arch/arm/mach-s3c64xx/s3c6400.c file, and it fixes the build error in the arch/x86/kernel/microcode_core.c file, that the merge did not catch. The microcode_core.c patch was provided by Stephen Rothwell who was invaluable in the merge issues involved with the large sysdev removal process in the driver-core tree. Signed-off-by: Greg Kroah-Hartman

time/clocksource: Fix kernel-doc warnings

2011-12-19T10:41:40Z

Fix various KernelDoc build warnings. Signed-off-by: Kusanagi Kouichi Cc: John Stultz Link: http://lkml.kernel.org/r/20111219091320.0D5AF6FC03D@msa105.auone-net.jp Signed-off-by: Ingo Molnar

clocksource: convert sysdev_class to a regular subsystem

2011-12-14T23:28:51Z

After all sysdev classes are ported to regular driver core entities, the sysdev implementation will be entirely removed from the kernel. Cc: John Stultz Cc: Thomas Gleixner Signed-off-by: Kay Sievers Signed-off-by: Greg Kroah-Hartman

clocksource: Fix bug with max_deferment margin calculation

2011-12-01T23:50:00Z

In order to leave a margin of 12.5% we should >> 3 not >> 5. CC: stable@kernel.org Signed-off-by: Yang Honggang (Joseph) [jstultz: Modified commit subject] Signed-off-by: John Stultz

clocksource: Avoid selecting mult values that might overflow when adjusted

2011-11-10T19:27:08Z

For some frequencies, the clocks_calc_mult_shift() function will unfortunately select mult values very close to 0xffffffff. This has the potential to overflow when NTP adjusts the clock, adding to the mult value. This patch adds a clocksource.maxadj value, which provides an approximation of an 11% adjustment(NTP limits adjustments to 500ppm and the tick adjustment is limited to 10%), which could be made to the clocksource.mult value. This is then used to both check that the current mult value won't overflow/underflow, as well as warning us if the timekeeping_adjust() code pushes over that 11% boundary. v2: Fix max_adjustment calculation, and improve WARN_ONCE messages. v3: Don't warn before maxadj has actually been set CC: Yong Zhang CC: David Daney CC: Thomas Gleixner CC: Chen Jie CC: zhangfx CC: stable@kernel.org Reported-by: Chen Jie Reported-by: zhangfx Tested-by: Yong Zhang Signed-off-by: John Stultz

clocksource: Make watchdog reset lockless

2011-09-13T07:58:29Z

KGDB needs to trylock watchdog_lock when trying to reset the clocksource watchdog after the system has been stopped to avoid a potential deadlock. When the trylock fails TSC usually becomes unstable. We can be more clever by using an atomic counter and checking it in the clocksource_watchdog callback. We restart the watchdog whenever the counter is > 0 and only decrement the counter when we ran through a full update cycle. Signed-off-by: Thomas Gleixner Cc: John Stultz Acked-by: Jason Wessel Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1109121326280.2723@ionos Signed-off-by: Thomas Gleixner

clocksource: Make watchdog robust vs. interruption

2011-06-16T17:30:53Z

The clocksource watchdog code is interruptible and it has been observed that this can trigger false positives which disable the TSC. The reason is that an interrupt storm or a long running interrupt handler between the read of the watchdog source and the read of the TSC brings the two far enough apart that the delta is larger than the unstable treshold. Move both reads into a short interrupt disabled region to avoid that. Reported-and-tested-by: Vernon Mauery Signed-off-by: Thomas Gleixner Cc: stable@kernel.org

clockevents/source: Use u64 to make 32bit happy

2011-05-20T08:50:52Z

unsigned long is not 64bit on 32bit machine. Signed-off-by: Thomas Gleixner

Merge branch 'timers-clockevents-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2011-05-20T00:44:40Z

* 'timers-clockevents-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: hpet: Cleanup the clockevents init and register code x86: Convert PIT to clockevents_config_and_register() clockevents: Provide interface to reconfigure an active clock event device clockevents: Provide combined configure and register function clockevents: Restructure clock_event_device members clocksource: Get rid of the hardcoded 5 seconds sleep time limit clocksource: Restructure clocksource struct members