Messages in this thread Patch in this message | | | Date | Thu, 16 Jun 2011 21:55:21 -0400 | From | Steven Rostedt <> | Subject | [RFC][PATCH 5/7] sched: Remove resetting exec_start in put_prev_task_rt() |
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From: Hillf Danton <dhillf@gmail.com>
There's no reason to clean the exec_start in put_prev_task_rt() as it is reset when the task gets back to the run queue. This saves us doing a store() in the fast path.
Cc: Mike Galbraith <efault@gmx.de> Cc: Yong Zhang <yong.zhang0@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Hillf Danton <dhillf@gmail.com> Link: http://lkml.kernel.org/r/BANLkTimqWD=q6YnSDi-v9y=LMWecgEzEWg@mail.gmail.com Signed-off-by: Steven Rostedt <rostedt@goodmis.org> --- kernel/sched_rt.c | 1 - 1 files changed, 0 insertions(+), 1 deletions(-)
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c index 7737d41..1546c1c 100644 --- a/kernel/sched_rt.c +++ b/kernel/sched_rt.c @@ -1166,7 +1166,6 @@ static struct task_struct *pick_next_task_rt(struct rq *rq) static void put_prev_task_rt(struct rq *rq, struct task_struct *p) { update_curr_rt(rq); - p->se.exec_start = 0; /* * The previous task needs to be made eligible for pushing -- 1.7.4.4
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