Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Baolin Wang 4a057549d6 alarmtimer: Add tracepoints for alarm timers ... Alarm timers are one of the mechanisms to wake up a system from suspend, but there exist no tracepoints to analyse which process/thread armed an alarmtimer. Add tracepoints for start/cancel/expire of individual alarm timers and one for tracing the suspend time decision when to resume the system. The following trace excerpt illustrates the new mechanism: Binder:3292_2-3304 [000] d..2 149.981123: alarmtimer_cancel: alarmtimer:ffffffc1319a7800 type:REALTIME expires:1325463120000000000 now:1325376810370370245 Binder:3292_2-3304 [000] d..2 149.981136: alarmtimer_start: alarmtimer:ffffffc1319a7800 type:REALTIME expires:1325376840000000000 now:1325376810370384591 Binder:3292_9-3953 [000] d..2 150.212991: alarmtimer_cancel: alarmtimer:ffffffc1319a5a00 type:BOOTTIME expires:179552000000 now:150154008122 Binder:3292_9-3953 [000] d..2 150.213006: alarmtimer_start: alarmtimer:ffffffc1319a5a00 type:BOOTTIME expires:179551000000 now:150154025622 system_server-3000 [002] ...1 162.701940: alarmtimer_suspend: alarmtimer type:REALTIME expires:1325376840000000000 The wakeup time which is selected at suspend time allows to map it back to the task arming the timer: Binder:3292_2. [ tglx: Store alarm timer expiry time instead of some useless RTC relative information, add proper type information for wakeups which are handled via the clock_nanosleep/freezer and massage the changelog. ] Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: John Stultz <john.stultz@linaro.org> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Richard Cochran <richardcochran@gmail.com> Link: http://lkml.kernel.org/r/1480372524-15181-5-git-send-email-john.stultz@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		2016-12-01 14:45:08 +01:00
..
alarmtimer.c	alarmtimer: Add tracepoints for alarm timers	2016-12-01 14:45:08 +01:00
clockevents.c	clockevents: Make clockevents_subsys static	2016-07-19 10:48:06 +02:00
clocksource.c	clocksource: Defer override invalidation unless clock is unstable	2016-08-31 14:43:33 -07:00
hrtimer.c	timers: Fix documentation for schedule_timeout() and similar	2016-10-26 13:14:47 +02:00
itimer.c	timer: Move sys_alarm from timer.c to itimer.c	2016-11-16 09:26:34 +01:00
jiffies.c
Kconfig
Makefile	posix-timers: Make them configurable	2016-11-16 09:26:35 +01:00
ntp.c
ntp_internal.h
posix-clock.c
posix-cpu-timers.c	posix_cpu_timers: Move the add_device_randomness() call to a proper place	2016-11-16 09:26:34 +01:00
posix-stubs.c	posix-timers: Make them configurable	2016-11-16 09:26:35 +01:00
posix-timers.c
sched_clock.c
test_udelay.c	time: Avoid timespec in udelay_test	2016-06-20 12:47:26 -07:00
tick-broadcast-hrtimer.c	tick/broadcast-hrtimer: Set name of the ce_broadcast_hrtimer	2016-07-05 17:02:19 +02:00
tick-broadcast.c
tick-common.c
tick-internal.h	timers: Forward the wheel clock whenever possible	2016-07-07 10:35:11 +02:00
tick-oneshot.c
tick-sched.c	tick/nohz: Prevent stopping the tick on an offline CPU	2016-09-13 17:53:52 +02:00
tick-sched.h
time.c	time: Avoid undefined behaviour in timespec64_add_safe()	2016-08-31 14:43:35 -07:00
timeconst.bc
timeconv.c	time: Add time64_to_tm()	2016-06-20 12:47:15 -07:00
timecounter.c
timekeeping.c	timekeeping: Add a fast and NMI safe boot clock	2016-11-29 18:02:59 +01:00
timekeeping.h
timekeeping_debug.c	timekeeping: Prints the amounts of time spent during suspend	2016-08-31 14:43:34 -07:00
timekeeping_internal.h
timer.c	posix-timers: Make them configurable	2016-11-16 09:26:35 +01:00
timer_list.c
timer_stats.c	timer: Avoid using timespec	2016-06-20 12:47:33 -07:00