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| author | Xunlei Pang <xlpang@redhat.com> | 2016-05-10 15:03:18 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-06-03 09:18:56 +0200 |
| commit | 1a99ae3f00d3c7c7885ee529ac9a874b19caa0cf (patch) | |
| tree | 3cfa251dd8e6a2550e63c2b4a2ece19ce2d6f767 | |
| parent | Merge tag 'pinctrl-v4.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/l... (diff) | |
| download | linux-1a99ae3f00d3c7c7885ee529ac9a874b19caa0cf.tar.xz linux-1a99ae3f00d3c7c7885ee529ac9a874b19caa0cf.zip | |
sched/fair: Fix the wrong throttled clock time for cfs_rq_clock_task()
Two minor fixes for cfs_rq_clock_task():
1) If cfs_rq is currently being throttled, we need to subtract the cfs
throttled clock time.
2) Make "throttled_clock_task_time" update SMP unrelated. Now UP cases
need it as well.
Signed-off-by: Xunlei Pang <xlpang@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1462885398-14724-1-git-send-email-xlpang@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| -rw-r--r-- | kernel/sched/fair.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 218f8e83db73..1e87bb633d43 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -3688,7 +3688,7 @@ static inline struct cfs_bandwidth *tg_cfs_bandwidth(struct task_group *tg) static inline u64 cfs_rq_clock_task(struct cfs_rq *cfs_rq) { if (unlikely(cfs_rq->throttle_count)) - return cfs_rq->throttled_clock_task; + return cfs_rq->throttled_clock_task - cfs_rq->throttled_clock_task_time; return rq_clock_task(rq_of(cfs_rq)) - cfs_rq->throttled_clock_task_time; } @@ -3826,13 +3826,11 @@ static int tg_unthrottle_up(struct task_group *tg, void *data) struct cfs_rq *cfs_rq = tg->cfs_rq[cpu_of(rq)]; cfs_rq->throttle_count--; -#ifdef CONFIG_SMP if (!cfs_rq->throttle_count) { /* adjust cfs_rq_clock_task() */ cfs_rq->throttled_clock_task_time += rq_clock_task(rq) - cfs_rq->throttled_clock_task; } -#endif return 0; } |