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| author | Tejun Heo <[email protected]> | 2009-11-13 09:33:53 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2009-11-15 08:59:54 +0000 |
| commit | 498657a478c60be092208422fefa9c7b248729c2 (patch) | |
| tree | c04542330fbbfaaa863fbec0f565b79c89df7033 /fs/proc/array.c | |
| parent | sched: Fix/add missing update_rq_clock() calls (diff) | |
| download | kernel-498657a478c60be092208422fefa9c7b248729c2.tar.gz kernel-498657a478c60be092208422fefa9c7b248729c2.zip | |
sched, kvm: Fix race condition involving sched_in_preempt_notifers
In finish_task_switch(), fire_sched_in_preempt_notifiers() is
called after finish_lock_switch().
However, depending on architecture, preemption can be enabled after
finish_lock_switch() which breaks the semantics of preempt
notifiers.
So move it before finish_arch_switch(). This also makes the in-
notifiers symmetric to out- notifiers in terms of locking - now
both are called under rq lock.
Signed-off-by: Tejun Heo <[email protected]>
Acked-by: Avi Kivity <[email protected]>
Cc: Peter Zijlstra <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'fs/proc/array.c')
0 files changed, 0 insertions, 0 deletions