[tip:sched/core] sched/fair: Initialize task load and utilization before placing task on rq

[tip-bot for Morten Rasmussen]

Commit-ID:  98d8fd8126676f7ba6e133e65b2ca4b17989d32c
Gitweb:     http://git.kernel.org/tip/98d8fd8126676f7ba6e133e65b2ca4b17989d32c
Author:     Morten Rasmussen <morten.rasmussen@xxxxxxx>
AuthorDate: Fri, 14 Aug 2015 17:23:14 +0100
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Sun, 13 Sep 2015 09:52:58 +0200

sched/fair: Initialize task load and utilization before placing task on rq

Task load or utilization is not currently considered in
select_task_rq_fair(), but if we want that in the future we should make
sure it is not zero for new tasks.

cc: Ingo Molnar <mingo@xxxxxxxxxx>
cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Signed-off-by: Morten Rasmussen <morten.rasmussen@xxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: Dietmar Eggemann <Dietmar.Eggemann@xxxxxxx>
Cc: Juri Lelli <Juri.Lelli@xxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: daniel.lezcano@xxxxxxxxxx
Cc: mturquette@xxxxxxxxxxxx
Cc: pang.xunlei@xxxxxxxxxx
Cc: rjw@xxxxxxxxxxxxx
Cc: sgurrappadi@xxxxxxxxxx
Cc: vincent.guittot@xxxxxxxxxx
Cc: yuyang.du@xxxxxxxxx
Link: http://lkml.kernel.org/r/1439569394-11974-7-git-send-email-morten.rasmussen@xxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 kernel/sched/core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index b621271..6ab415a 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2343,6 +2343,8 @@ void wake_up_new_task(struct task_struct *p)
 	struct rq *rq;
 
 	raw_spin_lock_irqsave(&p->pi_lock, flags);
+	/* Initialize new task's runnable average */
+	init_entity_runnable_average(&p->se);
 #ifdef CONFIG_SMP
 	/*
 	 * Fork balancing, do it here and not earlier because:
@@ -2352,8 +2354,6 @@ void wake_up_new_task(struct task_struct *p)
 	set_task_cpu(p, select_task_rq(p, task_cpu(p), SD_BALANCE_FORK, 0));
 #endif
 
-	/* Initialize new task's runnable average */
-	init_entity_runnable_average(&p->se);
 	rq = __task_rq_lock(p);
 	activate_task(rq, p, 0);
 	p->on_rq = TASK_ON_RQ_QUEUED;
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/