From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753219Ab3LCJHI (ORCPT ); Tue, 3 Dec 2013 04:07:08 -0500 Received: from mail-pb0-f54.google.com ([209.85.160.54]:40040 "EHLO mail-pb0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753149Ab3LCJGw (ORCPT ); Tue, 3 Dec 2013 04:06:52 -0500 From: Alex Shi To: mingo@redhat.com, peterz@infradead.org, morten.rasmussen@arm.com, vincent.guittot@linaro.org, daniel.lezcano@linaro.org, fweisbec@gmail.com, linux@arm.linux.org.uk, tony.luck@intel.com, fenghua.yu@intel.com, tglx@linutronix.de, akpm@linux-foundation.org, arjan@linux.intel.com, pjt@google.com, fengguang.wu@intel.com Cc: james.hogan@imgtec.com, alex.shi@linaro.org, jason.low2@hp.com, gregkh@linuxfoundation.org, hanjun.guo@linaro.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/4] sched: shortcut to remove load_idx Date: Tue, 3 Dec 2013 17:05:53 +0800 Message-Id: <1386061556-28233-2-git-send-email-alex.shi@linaro.org> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1386061556-28233-1-git-send-email-alex.shi@linaro.org> References: <1386061556-28233-1-git-send-email-alex.shi@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Shortcut to remove rq->cpu_load[load_idx] effect in scheduler. In five load idx, only busy_idx, idle_idx are not zero. Newidle_idx, wake_idx and fork_idx are all zero in all archs. So, change the idx to zero here can fully remove load_idx effect. Signed-off-by: Alex Shi --- kernel/sched/fair.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index e8b652e..ce683aa 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -5633,7 +5633,7 @@ static inline void update_sd_lb_stats(struct lb_env *env, struct sd_lb_stats *sd if (child && child->flags & SD_PREFER_SIBLING) prefer_sibling = 1; - load_idx = get_sd_load_idx(env->sd, env->idle); + load_idx = 0; do { struct sg_lb_stats *sgs = &tmp_sgs; -- 1.8.1.2