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| author | Ingo Molnar <mingo@kernel.org> | 2016-01-06 10:41:48 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-01-06 10:41:48 (GMT) |
| commit | 3104fb3dd45bb47ff1382d1c079c251710ddcae3 (patch) | |
| tree | 0c562ad5b3a960b3299edd5abdbe12b9f0a50a6b /kernel/sched | |
| parent | ee9a7d2cb0cf1a1498478bc923d911f3d9c910ac (diff) | |
| parent | 984cf355aeaa8f2eda3861b50d0e8d3e3f77e83b (diff) | |
| download | linux-3104fb3dd45bb47ff1382d1c079c251710ddcae3.tar.xz | |
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU changes from Paul E. McKenney:
- Adding transitivity uniformly to rcu_node structure ->lock
acquisitions. (This is implemented by the first two commits
on top of v4.4-rc2 due to the pervasive nature of this change.)
- Documentation updates, including RCU requirements.
- Expedited grace-period changes.
- Miscellaneous fixes.
- Linked-list fixes, courtesy of KTSAN.
- Torture-test updates.
- Late-breaking fix to sysrq-generated crash.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 732e993..1ef0d7a 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -3109,7 +3109,6 @@ static void __sched notrace __schedule(bool preempt) cpu = smp_processor_id(); rq = cpu_rq(cpu); - rcu_note_context_switch(); prev = rq->curr; /* @@ -3128,13 +3127,16 @@ static void __sched notrace __schedule(bool preempt) if (sched_feat(HRTICK)) hrtick_clear(rq); + local_irq_disable(); + rcu_note_context_switch(); + /* * Make sure that signal_pending_state()->signal_pending() below * can't be reordered with __set_current_state(TASK_INTERRUPTIBLE) * done by the caller to avoid the race with signal_wake_up(). */ smp_mb__before_spinlock(); - raw_spin_lock_irq(&rq->lock); + raw_spin_lock(&rq->lock); lockdep_pin_lock(&rq->lock); rq->clock_skip_update <<= 1; /* promote REQ to ACT */ |