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Commit 995b9ea4 authored by Kirill Tkhai's avatar Kirill Tkhai Committed by Thomas Gleixner
Browse files

sched/deadline: Remove useless dl_nr_total 



In deadline class we do not have group scheduling like in RT.

dl_nr_total is the same as dl_nr_running. So, one of them should
be removed.

Cc: Ingo Molnar <mingo@redhat.com>
Cc: Juri Lelli <juri.lelli@gmail.com>
Signed-off-by: default avatarKirill Tkhai <tkhai@yandex.ru>
Signed-off-by: default avatarPeter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/368631392675853@web20h.yandex.ru


Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 82b95800

kernel/sched/deadline.c

+1 −3
Original line number Diff line number Diff line
@@ -121,7 +121,7 @@ static inline void dl_clear_overload(struct rq *rq) 


static void update_dl_migration(struct dl_rq *dl_rq)

{

	if (dl_rq->dl_nr_migratory && dl_rq->dl_nr_total > 1) {

	if (dl_rq->dl_nr_migratory && dl_rq->dl_nr_running > 1) {

		if (!dl_rq->overloaded) {

			dl_set_overload(rq_of_dl_rq(dl_rq));

			dl_rq->overloaded = 1;
@@ -137,7 +137,6 @@ static void inc_dl_migration(struct sched_dl_entity *dl_se, struct dl_rq *dl_rq) 
	struct task_struct *p = dl_task_of(dl_se);

	dl_rq = &rq_of_dl_rq(dl_rq)->dl;



	dl_rq->dl_nr_total++;

	if (p->nr_cpus_allowed > 1)

		dl_rq->dl_nr_migratory++;
@@ -149,7 +148,6 @@ static void dec_dl_migration(struct sched_dl_entity *dl_se, struct dl_rq *dl_rq) 
	struct task_struct *p = dl_task_of(dl_se);

	dl_rq = &rq_of_dl_rq(dl_rq)->dl;



	dl_rq->dl_nr_total--;

	if (p->nr_cpus_allowed > 1)

		dl_rq->dl_nr_migratory--;

kernel/sched/sched.h

+0 −1
Original line number Diff line number Diff line
@@ -462,7 +462,6 @@ struct dl_rq { 
	} earliest_dl;



	unsigned long dl_nr_migratory;

	unsigned long dl_nr_total;

	int overloaded;



	/*