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Commit 94359f05 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

sched: undo some of the recent changes 



undo some of the recent changes that are not needed after all,
such as last_min_vruntime.

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
parent dc1f31c9

include/linux/sched.h

+0 −1
Original line number Diff line number Diff line
@@ -908,7 +908,6 @@ struct sched_entity { 
	u64			sum_exec_runtime;

	u64			vruntime;

	u64			prev_sum_exec_runtime;

	u64			last_min_vruntime;



#ifdef CONFIG_SCHEDSTATS

	u64			wait_start;

kernel/sched.c

+0 −1
Original line number Diff line number Diff line
@@ -1616,7 +1616,6 @@ static void __sched_fork(struct task_struct *p) 
	p->se.exec_start		= 0;

	p->se.sum_exec_runtime		= 0;

	p->se.prev_sum_exec_runtime	= 0;

	p->se.last_min_vruntime		= 0;



#ifdef CONFIG_SCHEDSTATS

	p->se.wait_start		= 0;

kernel/sched_fair.c

+3 −10
Original line number Diff line number Diff line
@@ -480,14 +480,9 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int initial) 
		vruntime += __sched_vslice(cfs_rq->nr_running + 1);



	if (!initial) {

		if (sched_feat(NEW_FAIR_SLEEPERS)) {

			s64 latency = cfs_rq->min_vruntime - se->vruntime;

			if (latency < 0 || !cfs_rq->nr_running)

				latency = 0;

			else

				latency = min_t(s64, latency, sysctl_sched_latency);

			vruntime -= latency;

		}

		if (sched_feat(NEW_FAIR_SLEEPERS))

			vruntime -= sysctl_sched_latency;



		vruntime = max(vruntime, se->vruntime);

	}
@@ -531,8 +526,6 @@ dequeue_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int sleep) 
				se->block_start = rq_of(cfs_rq)->clock;

		}

#endif

		/* se->vruntime = entity_key(cfs_rq, se); */

		se->last_min_vruntime = cfs_rq->min_vruntime;

	}



	if (se != cfs_rq->curr)