Commit-ID: a8d7ad52a7befbde896276d05c75c90fed48b5bf Gitweb: http://git.kernel.org/tip/a8d7ad52a7befbde896276d05c75c90fed48b5bf Author: Peter Zijlstra <pet...@infradead.org> AuthorDate: Thu, 14 Mar 2013 10:48:39 +0100 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Mon, 18 Mar 2013 10:18:08 +0100
sched/tracing: Allow tracing the preemption decision on wakeup Thomas noted that we do the wakeup preemption check after the wakeup trace point, this means the tracepoint cannot test/report this decision; which is rather important for latency sensitive workloads. Therefore move the tracepoint after doing the preemption check. Suggested-by: Thomas Gleixner <t...@linutronix.de> Signed-off-by: Peter Zijlstra <a.p.zijls...@chello.nl> Acked-by: Steven Rostedt <rost...@goodmis.org> Acked-by: Paul Turner <p...@google.com> Cc: Mike Galbraith <efa...@gmx.de> Link: http://lkml.kernel.org/r/1363254519.26965.9.camel@laptop Signed-off-by: Ingo Molnar <mi...@kernel.org> --- kernel/sched/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index b36635e..849deb9 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -1288,8 +1288,8 @@ static void ttwu_activate(struct rq *rq, struct task_struct *p, int en_flags) static void ttwu_do_wakeup(struct rq *rq, struct task_struct *p, int wake_flags) { - trace_sched_wakeup(p, true); check_preempt_curr(rq, p, wake_flags); + trace_sched_wakeup(p, true); p->state = TASK_RUNNING; #ifdef CONFIG_SMP -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
