From 795949dad190d044831079d4455674133063d7fc Mon Sep 17 00:00:00 2001 From: Vincent Guittot Date: Tue, 20 Oct 2015 10:46:26 +0200 Subject: [PATCH] ANDROID: 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 Signed-off-by: Steve Muckle Signed-off-by: Andres Oportus --- kernel/sched/sched.h | 1 - 1 file changed, 1 deletion(-) diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 7c59c9b4e7ea..7de37eb85b3c 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -1643,7 +1643,6 @@ 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) { }