From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CD154C433E0 for ; Tue, 30 Mar 2021 12:06:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9F05961999 for ; Tue, 30 Mar 2021 12:06:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232039AbhC3MFs (ORCPT ); Tue, 30 Mar 2021 08:05:48 -0400 Received: from szxga07-in.huawei.com ([45.249.212.35]:15824 "EHLO szxga07-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232019AbhC3MFl (ORCPT ); Tue, 30 Mar 2021 08:05:41 -0400 Received: from DGGEMS401-HUB.china.huawei.com (unknown [172.30.72.60]) by szxga07-in.huawei.com (SkyGuard) with ESMTP id 4F8p4j5Hzpz9sKj; Tue, 30 Mar 2021 20:03:33 +0800 (CST) Received: from localhost.localdomain.localdomain (10.175.113.25) by DGGEMS401-HUB.china.huawei.com (10.3.19.201) with Microsoft SMTP Server id 14.3.498.0; Tue, 30 Mar 2021 20:05:32 +0800 From: Kefeng Wang To: Peter Zijlstra , CC: Ingo Molnar , Juri Lelli , Vincent Guittot , Kefeng Wang Subject: [PATCH -next] sched/fair: Move update_nohz_stats() under CONFIG_NO_HZ_COMMON Date: Tue, 30 Mar 2021 20:06:57 +0800 Message-ID: <20210330120657.54173-1-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.113.25] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org update_nohz_stats() only call _nohz_idle_balance() under CONFIG_NO_HZ_COMMON. Signed-off-by: Kefeng Wang --- kernel/sched/fair.c | 40 ++++++++++++++++++---------------------- 1 file changed, 18 insertions(+), 22 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 6d73bdbb2d40..2a20ada83cbb 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -8395,28 +8395,6 @@ group_type group_classify(unsigned int imbalance_pct, return group_has_spare; } -static bool update_nohz_stats(struct rq *rq) -{ -#ifdef CONFIG_NO_HZ_COMMON - unsigned int cpu = rq->cpu; - - if (!rq->has_blocked_load) - return false; - - if (!cpumask_test_cpu(cpu, nohz.idle_cpus_mask)) - return false; - - if (!time_after(jiffies, READ_ONCE(rq->last_blocked_load_update_tick))) - return true; - - update_blocked_averages(cpu); - - return rq->has_blocked_load; -#else - return false; -#endif -} - /** * update_sg_lb_stats - Update sched_group's statistics for load balancing. * @env: The load balancing environment. @@ -10380,6 +10358,24 @@ void nohz_balance_enter_idle(int cpu) WRITE_ONCE(nohz.has_blocked, 1); } +static bool update_nohz_stats(struct rq *rq) +{ + unsigned int cpu = rq->cpu; + + if (!rq->has_blocked_load) + return false; + + if (!cpumask_test_cpu(cpu, nohz.idle_cpus_mask)) + return false; + + if (!time_after(jiffies, READ_ONCE(rq->last_blocked_load_update_tick))) + return true; + + update_blocked_averages(cpu); + + return rq->has_blocked_load; +} + /* * Internal function that runs load balance for all idle cpus. The load balance * can be a simple update of blocked load or a complete load balance with -- 2.26.2