Commit cd248fa7 authored Oct 20, 2015 by Vincent Guittot Committed by Leo Yan May 10, 2016

sched: remove call of sched_avg_update from sched_rt_avg_update



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>

parent 9d44dc7f

kernel/sched/sched.h

+0 −1

Original line number	Diff line number	Diff line
		@@ -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) { }