From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steve Muckle Subject: [RFCv6 PATCH 08/10] sched: remove call of sched_avg_update from sched_rt_avg_update Date: Tue, 8 Dec 2015 22:19:29 -0800 Message-ID: <1449641971-20827-9-git-send-email-smuckle@linaro.org> References: <1449641971-20827-1-git-send-email-smuckle@linaro.org> Return-path: Received: from mail-pa0-f41.google.com ([209.85.220.41]:36086 "EHLO mail-pa0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752369AbbLIGTs (ORCPT ); Wed, 9 Dec 2015 01:19:48 -0500 Received: by pacdm15 with SMTP id dm15so24607879pac.3 for ; Tue, 08 Dec 2015 22:19:48 -0800 (PST) In-Reply-To: <1449641971-20827-1-git-send-email-smuckle@linaro.org> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Peter Zijlstra , Ingo Molnar Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Vincent Guittot , Morten Rasmussen , Dietmar Eggemann , Juri Lelli , Patrick Bellasi , Michael Turquette From: Vincent Guittot 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 --- kernel/sched/sched.h | 1 - 1 file changed, 1 deletion(-) diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 90d5df6..08858d1 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -1497,7 +1497,6 @@ 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) { } -- 2.4.10