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=-9.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS 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 C017AC4741F for ; Fri, 30 Oct 2020 14:48:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3DDF9221FF for ; Fri, 30 Oct 2020 14:48:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="DRDWsb8B" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727080AbgJ3Osu (ORCPT ); Fri, 30 Oct 2020 10:48:50 -0400 Received: from m12-17.163.com ([220.181.12.17]:43967 "EHLO m12-17.163.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726982AbgJ3Ost (ORCPT ); Fri, 30 Oct 2020 10:48:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=Date:From:Subject:Message-ID:MIME-Version; bh=vR3TF aORq8UB42QxLQXhJMqDJEgOMINgJTMsHq0D48A=; b=DRDWsb8BbosicWxE0W5va DTEnwEP66A5hBjoUL1FZge8toJluWt5QY3RzvMFg7avQmYBiEboTyEP+izJUsyB2 wQTkRTO/0bkxzENR10vBnHDkrpuGqcxxM0aDr0AvPoTszVvSsHMT5zZ/rW5YuUgF dG7wf8UKn+OrYJ776K2i14= Received: from localhost (unknown [101.86.209.82]) by smtp13 (Coremail) with SMTP id EcCowAAnLJQ9J5xfdQkwQw--.32426S2; Fri, 30 Oct 2020 22:46:21 +0800 (CST) Date: Fri, 30 Oct 2020 22:46:21 +0800 From: Hui Su To: mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, linux-kernel@vger.kernel.org, sh_def@163.com Subject: [PATCH] sched/fair: remove the spin_lock operations Message-ID: <20201030144621.GA96974@rlk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-CM-TRANSID: EcCowAAnLJQ9J5xfdQkwQw--.32426S2 X-Coremail-Antispam: 1Uf129KBjvdXoW7Gw4fWFWkZF4fAFW8JrW7twb_yoW3GFX_C3 WruryfKr12vr1UurWxC395Kry0qa1IqF1I9Fn2qFW5JrySqryDArZ5CF93Cr9xXFs7Ja4D ArsxWFWDWryDKjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7xRR_Ma7UUUUU== X-Originating-IP: [101.86.209.82] X-CM-SenderInfo: xvkbvvri6rljoofrz/1tbiLh3NX1SIqqQV2AAAs+ Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since 'ab93a4bc955b ("sched/fair: Remove distribute_running fromCFS bandwidth")',there is nothing to protect between raw_spin_lock_irqsave/store() in do_sched_cfs_slack_timer(). So remove it. Signed-off-by: Hui Su --- kernel/sched/fair.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 290f9e38378c..5ecbf5e63198 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -5105,9 +5105,6 @@ static void do_sched_cfs_slack_timer(struct cfs_bandwidth *cfs_b) return; distribute_cfs_runtime(cfs_b); - - raw_spin_lock_irqsave(&cfs_b->lock, flags); - raw_spin_unlock_irqrestore(&cfs_b->lock, flags); } /* -- 2.29.0