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| author | Peter Zijlstra <peterz@infradead.org> | 2016-06-22 14:58:02 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-06-27 12:17:55 +0200 |
| commit | 8663e24d56dc1f093232783c23ea17f2a6f61c03 (patch) | |
| tree | e9f4d49bcf7324a34c78cdd7ed38b32f9c385843 /kernel/sched/sched.h | |
| parent | 3d30544f02120b884bba2a9466c87dba980e3be5 (diff) | |
| download | linux-8663e24d56dc1f093232783c23ea17f2a6f61c03.tar.bz2 | |
sched/fair: Reorder cgroup creation code
A future patch needs rq->lock held _after_ we link the task_group into
the hierarchy. In order to avoid taking every rq->lock twice, reorder
things a little and create online_fair_sched_group() to be called
after we link the task_group.
All this code is still ran from css_alloc() so css_online() isn't in
fact used for this.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
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: bsegall@google.com
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/sched.h')
| -rw-r--r-- | kernel/sched/sched.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 307bd0418095..28c42b789f70 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -321,6 +321,7 @@ extern int tg_nop(struct task_group *tg, void *data); extern void free_fair_sched_group(struct task_group *tg); extern int alloc_fair_sched_group(struct task_group *tg, struct task_group *parent); +extern void online_fair_sched_group(struct task_group *tg); extern void unregister_fair_sched_group(struct task_group *tg); extern void init_tg_cfs_entry(struct task_group *tg, struct cfs_rq *cfs_rq, struct sched_entity *se, int cpu, |