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author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-14 14:29:49 +1000 |
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committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-14 14:29:49 +1000 |
commit | 11c2d8174ed3dc4f1971564732689b4a39129702 (patch) | |
tree | ac00daa548ea8ac24ae7a5c8062312e335ab9858 /kernel/hrtimer.c | |
parent | cde274c0c789404df8ece3f9e7d6506caf0127e2 (diff) | |
parent | bce7f793daec3e65ec5c5705d2457b81fe7b5725 (diff) | |
download | op-kernel-dev-11c2d8174ed3dc4f1971564732689b4a39129702.zip op-kernel-dev-11c2d8174ed3dc4f1971564732689b4a39129702.tar.gz |
Merge commit 'origin/HEAD' into test-merge
Manual fixup of include/asm-powerpc/pgtable-ppc64.h
Diffstat (limited to 'kernel/hrtimer.c')
-rw-r--r-- | kernel/hrtimer.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index 421be5f..ab80515 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -1003,10 +1003,18 @@ hrtimer_start(struct hrtimer *timer, ktime_t tim, const enum hrtimer_mode mode) */ raise = timer->state == HRTIMER_STATE_PENDING; + /* + * We use preempt_disable to prevent this task from migrating after + * setting up the softirq and raising it. Otherwise, if me migrate + * we will raise the softirq on the wrong CPU. + */ + preempt_disable(); + unlock_hrtimer_base(timer, &flags); if (raise) hrtimer_raise_softirq(); + preempt_enable(); return ret; } |