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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2017-12-31 12:30:34 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-12-31 12:30:34 -0800 |
| commit | cea92e843e40452c08ba313abc39f59efbb4c29c (patch) | |
| tree | 1c4352defd3a322e5b6efcafe3598bca698aaf5e /include | |
| parent | Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip (diff) | |
| parent | timerqueue: Document return values of timerqueue_add/del() (diff) | |
| download | linux-dev-cea92e843e40452c08ba313abc39f59efbb4c29c.tar.xz linux-dev-cea92e843e40452c08ba313abc39f59efbb4c29c.zip | |
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"A pile of fixes for long standing issues with the timer wheel and the
NOHZ code:
- Prevent timer base confusion accross the nohz switch, which can
cause unlocked access and data corruption
- Reinitialize the stale base clock on cpu hotplug to prevent subtle
side effects including rollovers on 32bit
- Prevent an interrupt storm when the timer softirq is already
pending caused by tick_nohz_stop_sched_tick()
- Move the timer start tracepoint to a place where it actually makes
sense
- Add documentation to timerqueue functions as they caused confusion
several times now"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timerqueue: Document return values of timerqueue_add/del()
timers: Invoke timer_start_debug() where it makes sense
nohz: Prevent a timer interrupt storm in tick_nohz_stop_sched_tick()
timers: Reinitialize per cpu bases on hotplug
timers: Use deferrable base independent of base::nohz_active
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cpuhotplug.h | 2 | ||||
| -rw-r--r-- | include/linux/timer.h | 4 |
2 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h index 201ab7267986..1a32e558eb11 100644 --- a/include/linux/cpuhotplug.h +++ b/include/linux/cpuhotplug.h @@ -86,7 +86,7 @@ enum cpuhp_state { CPUHP_MM_ZSWP_POOL_PREPARE, CPUHP_KVM_PPC_BOOK3S_PREPARE, CPUHP_ZCOMP_PREPARE, - CPUHP_TIMERS_DEAD, + CPUHP_TIMERS_PREPARE, CPUHP_MIPS_SOC_PREPARE, CPUHP_BP_PREPARE_DYN, CPUHP_BP_PREPARE_DYN_END = CPUHP_BP_PREPARE_DYN + 20, diff --git a/include/linux/timer.h b/include/linux/timer.h index 04af640ea95b..2448f9cc48a3 100644 --- a/include/linux/timer.h +++ b/include/linux/timer.h @@ -207,9 +207,11 @@ unsigned long round_jiffies_up(unsigned long j); unsigned long round_jiffies_up_relative(unsigned long j); #ifdef CONFIG_HOTPLUG_CPU +int timers_prepare_cpu(unsigned int cpu); int timers_dead_cpu(unsigned int cpu); #else -#define timers_dead_cpu NULL +#define timers_prepare_cpu NULL +#define timers_dead_cpu NULL #endif #endif |