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linux-stable/kernel/time
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Yunfeng Ye 94ad2e3ced tick/sched: Reduce seqcount held scope in tick_do_update_jiffies64() 
If jiffies are up to date already (caller lost the race against another
CPU) there is no point to change the sequence count. Doing that just forces
other CPUs into the seqcount retry loop in tick_nohz_next_event() for
nothing.

Just bail out early.

[ tglx: Rewrote most of it ]

Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201117132006.462195901@linutronix.de
2020-11-19 10:48:29 +01:00
..
alarmtimer.c alarmtimer: Convert comma to semicolon 2020-08-25 12:45:53 +02:00
clockevents.c tick: Remove outgoing CPU from broadcast masks 2019-03-23 18:26:43 +01:00
clocksource.c clocksource: Remove obsolete ifdef 2020-06-09 16:36:47 +02:00
hrtimer.c hrtimer: Fix kernel-doc markups 2020-11-16 15:20:01 +01:00
itimer.c y2038: rename itimerval to __kernel_old_itimerval 2019-12-18 18:07:33 +01:00
jiffies.c timekeeping: Convert jiffies_seq to seqcount_raw_spinlock_t 2020-10-26 11:04:14 +01:00
Kconfig posix-cpu-timers: Provide mechanisms to defer timer handling to task_work 2020-08-06 16:50:59 +02:00
Makefile ns: Introduce Time Namespace 2020-01-14 12:20:48 +01:00
namespace.c nsproxy: support CLONE_NEWTIME with setns() 2020-07-08 11:14:22 +02:00
ntp.c ntp/y2038: Remove incorrect time_t truncation 2019-11-12 08:13:44 +01:00
ntp_internal.h ntp: Audit NTP parameters adjustment 2019-04-15 18:14:01 -04:00
posix-clock.c posix-clocks: Rename the clock_get() callback to clock_get_timespec() 2020-01-14 12:20:49 +01:00
posix-cpu-timers.c posix-cpu-timers: Provide mechanisms to defer timer handling to task_work 2020-08-06 16:50:59 +02:00
posix-stubs.c posix-timers: Make clock_nanosleep() time namespace aware 2020-01-14 12:20:55 +01:00
posix-timers.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
posix-timers.h posix-clocks: Introduce clock_get_ktime() callback 2020-01-14 12:20:51 +01:00
sched_clock.c time/sched_clock: Use seqcount_latch_t 2020-09-10 11:19:29 +02:00
test_udelay.c time/debug: Remove license boilerplate 2018-11-23 11:51:21 +01:00
tick-broadcast-hrtimer.c tick: broadcast-hrtimer: Fix a race in bc_set_next 2019-09-27 14:45:55 +02:00
tick-broadcast.c tick/broadcast: Serialize access to tick_next_period 2020-11-19 10:48:28 +01:00
tick-common.c tick: Document protections for tick related data 2020-11-19 10:48:28 +01:00
tick-internal.h tick: Remove outgoing CPU from broadcast masks 2019-03-23 18:26:43 +01:00
tick-oneshot.c
tick-sched.c tick/sched: Reduce seqcount held scope in tick_do_update_jiffies64() 2020-11-19 10:48:29 +01:00
tick-sched.h tick/sched: Update tick_sched struct documentation 2019-03-24 20:29:32 +01:00
time.c y2038: remove unused time32 interfaces 2020-02-21 11:22:15 -08:00
timeconst.bc
timeconv.c time: Add missing colons for parameter documentation of time64_to_tm() 2020-11-15 23:47:23 +01:00
timecounter.c time: Remove license boilerplate 2018-11-23 11:51:21 +01:00
timekeeping.c timekeeping: Address parameter documentation issues for various functions 2020-11-15 23:47:24 +01:00
timekeeping.h timekeeping: Convert jiffies_seq to seqcount_raw_spinlock_t 2020-10-26 11:04:14 +01:00
timekeeping_debug.c timekeeping/debug: No need to check return value of debugfs_create functions 2019-01-29 20:08:41 +01:00
timekeeping_internal.h timekeeping/vsyscall: Provide vdso_update_begin/end() 2020-08-06 10:57:30 +02:00
timer.c timers: Make run_local_timers() static 2020-11-16 15:20:01 +01:00
timer_list.c timer_list: Use printk format instead of open-coded symbol lookup 2020-11-15 20:47:14 +01:00
vsyscall.c timekeeping/vsyscall: Provide vdso_update_begin/end() 2020-08-06 10:57:30 +02:00