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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-15 20:50:03 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-15 20:50:03 +0400 |
| commit | c9192798b9318a4b3f96c41ae27805cc8b46b7ee (patch) | |
| tree | cd943e4e7641c53797fc2918c8230a7f959a071b | |
| parent | 1bbee7d616d5fdffa6c1c86075dbffe2b3e236ea (diff) | |
| parent | f13d4f979c518119bba5439dd2364d76d31dcd3f (diff) | |
| download | linux-c9192798b9318a4b3f96c41ae27805cc8b46b7ee.tar.xz | |
Merge branch 'timers-for-linus-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-for-linus-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
hrtimer: Preserve timer state in remove_hrtimer()
| -rw-r--r-- | kernel/hrtimer.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index 1decafbb6b1a..72206cf5c6cf 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -931,6 +931,7 @@ static inline int remove_hrtimer(struct hrtimer *timer, struct hrtimer_clock_base *base) { if (hrtimer_is_queued(timer)) { + unsigned long state; int reprogram; /* @@ -944,8 +945,13 @@ remove_hrtimer(struct hrtimer *timer, struct hrtimer_clock_base *base) debug_deactivate(timer); timer_stats_hrtimer_clear_start_info(timer); reprogram = base->cpu_base == &__get_cpu_var(hrtimer_bases); - __remove_hrtimer(timer, base, HRTIMER_STATE_INACTIVE, - reprogram); + /* + * We must preserve the CALLBACK state flag here, + * otherwise we could move the timer base in + * switch_hrtimer_base. + */ + state = timer->state & HRTIMER_STATE_CALLBACK; + __remove_hrtimer(timer, base, state, reprogram); return 1; } return 0; @@ -1231,6 +1237,9 @@ static void __run_hrtimer(struct hrtimer *timer, ktime_t *now) BUG_ON(timer->state != HRTIMER_STATE_CALLBACK); enqueue_hrtimer(timer, base); } + + WARN_ON_ONCE(!(timer->state & HRTIMER_STATE_CALLBACK)); + timer->state &= ~HRTIMER_STATE_CALLBACK; } |