From 1812a643ccbfeb61a00a7f0d7219606e63d8815b Mon Sep 17 00:00:00 2001 From: Hillf Danton Date: Thu, 16 Jun 2011 21:55:21 -0400 Subject: [PATCH] sched: Remove resetting exec_start in put_prev_task_rt() 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. Signed-off-by: Hillf Danton Signed-off-by: Steven Rostedt Signed-off-by: Peter Zijlstra Cc: Mike Galbraith Cc: Yong Zhang Link: http://lkml.kernel.org/r/BANLkTimqWD=q6YnSDi-v9y=LMWecgEzEWg@mail.gmail.com Signed-off-by: Ingo Molnar --- kernel/sched_rt.c | 1 - 1 file changed, 1 deletion(-) diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c index 8e189455ed12..70107a39b1ba 100644 --- a/kernel/sched_rt.c +++ b/kernel/sched_rt.c @@ -1178,7 +1178,6 @@ 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 -- 2.34.1