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=-13.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL autolearn=no 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 65E15C43460 for ; Fri, 16 Apr 2021 21:33:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4871D610A6 for ; Fri, 16 Apr 2021 21:33:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344426AbhDPVeJ (ORCPT ); Fri, 16 Apr 2021 17:34:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53312 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344421AbhDPVeF (ORCPT ); Fri, 16 Apr 2021 17:34:05 -0400 Received: from mail-qk1-x730.google.com (mail-qk1-x730.google.com [IPv6:2607:f8b0:4864:20::730]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 55D43C061756 for ; Fri, 16 Apr 2021 14:33:40 -0700 (PDT) Received: by mail-qk1-x730.google.com with SMTP id t17so1923113qkg.4 for ; Fri, 16 Apr 2021 14:33:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=7eH2Lv11SZ0QBm3f11PM1lGjnhy8yPppQrMbgJ4vk1A=; b=CjG3ocYg4/RhZbq+qnSzPhtDOmM6lnB2H5LmOYWVYyV4v+5chxBLzcyjQyNzNABrac K9RjzvaXZuaLdblD+tEGfTwMp7aqoEvVgv5WuR3WcHBBnzDRCKb9hRq9H5jX5zQpc7I8 BwggiJGbF9JOAnp8dlpLOWwQYfpSJD3+uOZxh7CnwZ71y5bARvVwWoALxzS1WrbUSeR7 vjEQa9eG7N2E1/AKNv2bgKS6WYuJM2UXXRicS5BujvF4iOG6kaEHk+eUiWH+hLF5oCHY JypL9smg65qPHQQbHo+JDapbrWoYHANZ/oG+87k9TYSrLWaeBgpJcXKoFuZU4iPPs0L6 CfHA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=7eH2Lv11SZ0QBm3f11PM1lGjnhy8yPppQrMbgJ4vk1A=; b=jzXY4ZMslh/bZHwnEfKeP9AHtpJNyAfDEd+KUHIx5v/f9vViaHyi/dllMQiBkbKcgX vx4Ce4gJ+atuunpD1hJPwkDbUrEtH+/gpkL3+sGHlv9o+JbGk8XOqlDb41FB1/xIlXiP wgItgfRs+JaOSrlofcYwOR77ZpBho6OtnLoWx5ZR8A5jjhpgRntJyQj08WKWSwfkUpey jio9IxcyiJD0kU79PpCTTSWIaFd0FHja1X4L3R+Vzvrm0IvJeKUiQI5eCb829f9MwrIH iHC9gJQki12IxyWRVYMdZeKQOxONOLPfnCffV6DtzBUaVO/CoVoD5uigZBFg1Mu6cs4s AvFw== X-Gm-Message-State: AOAM5324HU4JCfQWGzeDNeqmnXoje8AEedNZcK55/BjbcrHojkkSgubg osudo7V/79Pg1ApaGvYDhpbuLaJUWj542QmCnfkq6Q== X-Google-Smtp-Source: ABdhPJxbMSKARCZNdKn5pHyebLlyAwpT4vc/GvCWbXhP052KTAGt0UbyHBni48pbhubDGSq38b8E4Qr2i6r4+C3XHWI= X-Received: by 2002:a37:a7c7:: with SMTP id q190mr1308734qke.146.1618608819213; Fri, 16 Apr 2021 14:33:39 -0700 (PDT) MIME-Version: 1.0 References: <20210323035706.572953-1-joshdon@google.com> <20210324112739.GO15768@suse.de> In-Reply-To: From: Josh Don Date: Fri, 16 Apr 2021 14:33:27 -0700 Message-ID: Subject: Re: [PATCH v2] sched: Warn on long periods of pending need_resched To: Peter Zijlstra Cc: Mel Gorman , Ingo Molnar , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Daniel Bristot de Oliveira , Luis Chamberlain , Kees Cook , Iurii Zaikin , linux-kernel , linux-fsdevel@vger.kernel.org, David Rientjes , Oleg Rombakh , linux-doc@vger.kernel.org, Paul Turner Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Apr 16, 2021 at 8:05 AM Peter Zijlstra wrote: > > On Tue, Mar 30, 2021 at 03:44:12PM -0700, Josh Don wrote: > > Peter, > > > > Since you've already pulled the need_resched warning patch into your > > tree, I'm including just the diff based on that patch (in response to > > Mel's comments) below. This should be squashed into the original > > patch. > > > > Sorry, I seem to have missed this. The patch is completely whitespace > mangled through. > > I've attached my latest copy of the patch and held it back for now, > please resubmit. Yikes, sorry about that. I've squashed the fixup and sent the updated patch (with trimmed cc list): https://lkml.org/lkml/2021/4/16/1125 Thanks, Josh