linux/kernel/time
Chunyan Zhang 880d94c781 tick/common: Touch watchdog in tick_unfreeze() on all CPUs
commit 5167c506d6 upstream.

Suspend to IDLE invokes tick_unfreeze() on resume. tick_unfreeze() on the
first resuming CPU resumes timekeeping, which also has the side effect of
resetting the softlockup watchdog on this CPU.

But on the secondary CPUs the watchdog is not reset in the resume /
unfreeze() path, which can result in false softlockup warnings on those
CPUs depending on the time spent in suspend.

Prevent this by clearing the softlock watchdog in the unfreeze path also
on the secondary resuming CPUs.

[ tglx: Massaged changelog ]

Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20200110083902.27276-1-chunyan.zhang@unisoc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-18 19:18:46 +01:00
..
alarmtimer.c alarmtimer: Unregister wakeup source when module get fails 2020-02-11 04:33:59 -08:00
clockevents.c
clocksource.c clocksource: Prevent double add_timer_on() for watchdog_timer 2020-02-11 04:34:18 -08:00
hrtimer.c hrtimer: Annotate lockless access to timer->state 2020-01-04 19:13:32 +01:00
itimer.c time: Prevent undefined behaviour in timespec64_to_ns() 2020-11-18 19:18:40 +01:00
jiffies.c
Kconfig
Makefile
ntp_internal.h
ntp.c
posix-clock.c ptp: fix the race between the release of ptp_clock and cdev 2020-01-04 19:13:35 +01:00
posix-cpu-timers.c
posix-stubs.c
posix-timers.c
posix-timers.h
sched_clock.c
test_udelay.c
tick-broadcast-hrtimer.c tick: broadcast-hrtimer: Fix a race in bc_set_next 2019-10-11 18:21:28 +02:00
tick-broadcast.c
tick-common.c tick/common: Touch watchdog in tick_unfreeze() on all CPUs 2020-11-18 19:18:46 +01:00
tick-internal.h
tick-oneshot.c
tick-sched.c tick/sched: Annotate lockless access to last_jiffies_update 2020-01-23 08:21:37 +01:00
tick-sched.h
time.c y2038: make do_gettimeofday() and get_seconds() inline 2019-11-20 18:45:24 +01:00
timeconst.bc
timeconv.c
timecounter.c
timekeeping_debug.c
timekeeping_internal.h
timekeeping.c timekeeping: Prevent 32bit truncation in scale64_check_overflow() 2020-10-01 13:14:36 +02:00
timekeeping.h
timer_list.c
timer.c random32: update the net random state on interrupt and activity 2020-08-07 09:36:20 +02:00