Messages in this thread Patch in this message | | | Date | Sun, 13 Sep 2015 04:05:13 -0700 | From | tip-bot for Morten Rasmussen <> | Subject | [tip:sched/core] sched/fair: Initialize task load and utilization before placing task on rq |
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Commit-ID: 98d8fd8126676f7ba6e133e65b2ca4b17989d32c Gitweb: http://git.kernel.org/tip/98d8fd8126676f7ba6e133e65b2ca4b17989d32c Author: Morten Rasmussen <morten.rasmussen@arm.com> AuthorDate: Fri, 14 Aug 2015 17:23:14 +0100 Committer: Ingo Molnar <mingo@kernel.org> 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@redhat.com> cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Morten Rasmussen <morten.rasmussen@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Dietmar Eggemann <Dietmar.Eggemann@arm.com> Cc: Juri Lelli <Juri.Lelli@arm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: daniel.lezcano@linaro.org Cc: mturquette@baylibre.com Cc: pang.xunlei@zte.com.cn Cc: rjw@rjwysocki.net Cc: sgurrappadi@nvidia.com Cc: vincent.guittot@linaro.org Cc: yuyang.du@intel.com Link: http://lkml.kernel.org/r/1439569394-11974-7-git-send-email-morten.rasmussen@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org> --- 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;
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