diff options
| author |   Ingo Molnar <mingo@kernel.org> | 2015-10-12 14:52:34 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-10-12 14:52:34 +0200 |
| commit | cdbcd239e2e264dc3ef7bc7865bcb8ec0023876f (patch) | |
| tree | 94f5d2cf92ebb2eee640862cb2beaab6503bf846 /kernel/sched/sched.h | |
| parent | x86/mce: Don't clear shared banks on Intel when offlining CPUs (diff) | |
| parent | x86/mce: Include linux/ioctl.h in uapi mce header (diff) | |
Merge branch 'x86/ras' into ras/core, to pick up changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/sched.h')
| -rw-r--r-- | kernel/sched/sched.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 68cda117574c..6d2a119c7ad9 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -1078,9 +1078,10 @@ static inline void finish_lock_switch(struct rq *rq, struct task_struct *prev) * After ->on_cpu is cleared, the task can be moved to a different CPU. * We must ensure this doesn't happen until the switch is completely * finished. + * + * Pairs with the control dependency and rmb in try_to_wake_up(). */ - smp_wmb(); - prev->on_cpu = 0; + smp_store_release(&prev->on_cpu, 0); #endif #ifdef CONFIG_DEBUG_SPINLOCK /* this is a valid case when another task releases the spinlock */ |