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sched: remove call of sched_avg_update from sched_rt_avg_update

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rt_avg is only used to scale the available CPU's capacity for CFS
tasks.  As the update of this scaling is done during periodic load
balance, we only have to ensure that sched_avg_update has been called
before any periodic load balancing. This requirement is already
fulfilled by __update_cpu_load so the call in sched_rt_avg_update,
which is part of the hotpath, is useless.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Steve Muckle <smuckle@linaro.org>
This commit is contained in:
Vincent Guittot
2015-10-20 10:46:26 +02:00
committed by Leo Yan
parent 9d44dc7fe2
commit cd248fa758
1 changed files with 0 additions and 1 deletions
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kernel/sched/sched.h
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@@ -1578,7 +1578,6 @@ static inline void set_dl_cpu_capacity(int cpu, bool request,
static inline void sched_rt_avg_update(struct rq *rq, u64 rt_delta)
{
rq->rt_avg += rt_delta * arch_scale_freq_capacity(NULL, cpu_of(rq));
sched_avg_update(rq);
}
#else
static inline void sched_rt_avg_update(struct rq *rq, u64 rt_delta) { }