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| author | Anders Roxell <anders.roxell@linaro.org> | 2016-08-10 12:11:15 +0200 |
|---|---|---|
| committer | Anders Roxell <anders.roxell@linaro.org> | 2016-08-10 12:11:15 +0200 |
| commit | a44038112d3379f49df8a9db3e1259d9e945faee (patch) | |
| tree | 198f8ef7dcba389b87dbd3cac861d896b5bfd77d /kernel/sched/sched.h | |
| parent | 590e935df0c94b2d7a4584bb26906666176a6133 (diff) | |
| parent | 0e790100f1c49f32a390d0cc55801230fd04ba56 (diff) | |
Merge remote-tracking branch 'lsk/linux-linaro-lsk-v3.18' into linux-linaro-lsk-v3.18-rtlsk-v3.18-16.09-rtlinux-linaro-lsk-v3.18-rt-test
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Conflicts:
kernel/futex.c
kernel/printk/printk.c
kernel/softirq.c
mm/slub.c
mm/swap.c
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 9e0deba1566e..c41de96c4563 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -994,9 +994,10 @@ 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 */ |