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: Kirill Tkhai <tkhai@yandex.ru>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/368631392675853@web20h.yandex.ru
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2 files changed, 1 insertions, 4 deletions

diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index b819577c21de..15cbc17fbf84 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -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--;
 
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index c2119fd20f8b..f964add50f38 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -462,7 +462,6 @@ struct dl_rq {
         } earliest_dl;
 
         unsigned long dl_nr_migratory;
-        unsigned long dl_nr_total;
         int overloaded;
 
         /*