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 <dhillf@gmail.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Yong Zhang <yong.zhang0@gmail.com> Link: http://lkml.kernel.org/r/BANLkTimqWD=q6YnSDi-v9y=LMWecgEzEWg@mail.gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -1178,7 +1178,6 @@ static struct task_struct *pick_next_task_rt(struct rq *rq)
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static void put_prev_task_rt(struct rq *rq, struct task_struct *p)
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static void put_prev_task_rt(struct rq *rq, struct task_struct *p)
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{
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{
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update_curr_rt(rq);
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update_curr_rt(rq);
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p->se.exec_start = 0;
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/*
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/*
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* The previous task needs to be made eligible for pushing
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* The previous task needs to be made eligible for pushing
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