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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 /kernel/cpu.c | |
| parent | 8d517bdfb57154b8a11d7f1682ecc0f79abf8e02 (diff) | |
| parent | 9f4533cd7334235cd4c9b9fb1b0b8791e2ba01a7 (diff) | |
| download | lwn-cea92e843e40452c08ba313abc39f59efbb4c29c.tar.gz lwn-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 'kernel/cpu.c')
| -rw-r--r-- | kernel/cpu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c index 3d002a6f216e..53f7dc65f9a3 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -1277,9 +1277,9 @@ static struct cpuhp_step cpuhp_bp_states[] = { * before blk_mq_queue_reinit_notify() from notify_dead(), * otherwise a RCU stall occurs. */ - [CPUHP_TIMERS_DEAD] = { + [CPUHP_TIMERS_PREPARE] = { .name = "timers:dead", - .startup.single = NULL, + .startup.single = timers_prepare_cpu, .teardown.single = timers_dead_cpu, }, /* Kicks the plugged cpu into life */ |