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| author | Ingo Molnar <mingo@kernel.org> | 2014-12-12 09:09:03 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-12-12 09:09:03 +0100 |
| commit | 3459f0d78ffe27a1b341c22eb158b622eaaea3fc (patch) | |
| tree | 715b0575eec541d0181876ad367ca5480cdcecf3 /kernel/sched/core.c | |
| parent | 9fc81d87420d0d3fd62d5e5529972c0ad9eab9cc (diff) | |
| parent | bee2782f30f66898be3f74ad02e4d1f87a969694 (diff) | |
Merge branch 'linus' into perf/urgent, to pick up the upstream merged bits
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/core.c')
| -rw-r--r-- | kernel/sched/core.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 24beb9bb4c3..e67a6e88e12 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2773,7 +2773,7 @@ need_resched: preempt_disable(); cpu = smp_processor_id(); rq = cpu_rq(cpu); - rcu_note_context_switch(cpu); + rcu_note_context_switch(); prev = rq->curr; schedule_debug(prev); @@ -2874,10 +2874,14 @@ asmlinkage __visible void __sched schedule_user(void) * or we have been woken up remotely but the IPI has not yet arrived, * we haven't yet exited the RCU idle mode. Do it here manually until * we find a better solution. + * + * NB: There are buggy callers of this function. Ideally we + * should warn if prev_state != IN_USER, but that will trigger + * too frequently to make sense yet. */ - user_exit(); + enum ctx_state prev_state = exception_enter(); schedule(); - user_enter(); + exception_exit(prev_state); } #endif |