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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2012-05-08 18:56:04 +0200
committerIngo Molnar <mingo@kernel.org>2012-05-09 15:23:17 +0200
commitcb04ff9ac424d0e689d9b612e9f73cb443ab4b7e (patch)
tree7335f4ca82dc0366ffbf9dc8de5396259213435a /kernel/sched
parent8b1e13638d465863572c8207a5cfceeef0cf0441 (diff)
sched, perf: Use a single callback into the scheduler
We can easily use a single callback for both sched-in and sched-out. This reduces the code footprint in the scheduler path as well as removes the PMU black spot otherwise present between the out and in callback. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-o56ajxp1edwqg6x9d31wb805@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched')
-rw-r--r--kernel/sched/core.c9
1 files changed, 1 insertions, 8 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 4603b9d8f30a..5c692a0a555d 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1913,7 +1913,7 @@ prepare_task_switch(struct rq *rq, struct task_struct *prev,
struct task_struct *next)
{
sched_info_switch(prev, next);
- perf_event_task_sched_out(prev, next);
+ perf_event_task_sched(prev, next);
fire_sched_out_preempt_notifiers(prev, next);
prepare_lock_switch(rq, next);
prepare_arch_switch(next);
@@ -1956,13 +1956,6 @@ static void finish_task_switch(struct rq *rq, struct task_struct *prev)
*/
prev_state = prev->state;
finish_arch_switch(prev);
-#ifdef __ARCH_WANT_INTERRUPTS_ON_CTXSW
- local_irq_disable();
-#endif /* __ARCH_WANT_INTERRUPTS_ON_CTXSW */
- perf_event_task_sched_in(prev, current);
-#ifdef __ARCH_WANT_INTERRUPTS_ON_CTXSW
- local_irq_enable();
-#endif /* __ARCH_WANT_INTERRUPTS_ON_CTXSW */
finish_lock_switch(rq, prev);
finish_arch_post_lock_switch();