Commit 90a0ff4e authored by Peter Zijlstra's avatar Peter Zijlstra
Browse files

sched,stats: Further simplify sched_info 



There's no point doing delta==0 updates.

Suggested-by: default avatarMel Gorman <mgorman@suse.de>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
parent 915a2bc3

kernel/sched/stats.h

+12 −9
Original line number Diff line number Diff line
@@ -160,10 +160,11 @@ static inline void sched_info_dequeue(struct rq *rq, struct task_struct *t) 
{

	unsigned long long delta = 0;



	if (t->sched_info.last_queued) {

	if (!t->sched_info.last_queued)

		return;



	delta = rq_clock(rq) - t->sched_info.last_queued;

	t->sched_info.last_queued = 0;

	}

	t->sched_info.run_delay += delta;



	rq_sched_info_dequeue(rq, delta);
@@ -176,12 +177,14 @@ static inline void sched_info_dequeue(struct rq *rq, struct task_struct *t) 
 */

static void sched_info_arrive(struct rq *rq, struct task_struct *t)

{

	unsigned long long now = rq_clock(rq), delta = 0;

	unsigned long long now, delta = 0;



	if (t->sched_info.last_queued) {

	if (!t->sched_info.last_queued)

		return;



	now = rq_clock(rq);

	delta = now - t->sched_info.last_queued;

	t->sched_info.last_queued = 0;

	}

	t->sched_info.run_delay += delta;

	t->sched_info.last_arrival = now;

	t->sched_info.pcount++;