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=-3.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 87136C4363D for ; Thu, 24 Sep 2020 20:41:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 38A3021D7F for ; Thu, 24 Sep 2020 20:41:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="v6GsUj4E"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="ENLxqsoF" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726635AbgIXUlu (ORCPT ); Thu, 24 Sep 2020 16:41:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58982 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725208AbgIXUlt (ORCPT ); Thu, 24 Sep 2020 16:41:49 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AB4B9C0613CE; Thu, 24 Sep 2020 13:41:49 -0700 (PDT) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1600980108; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=7WNniJWdtgjbCmAKCV5jnu3oJVt7te+w/KnOSYyq8oA=; b=v6GsUj4E+a6Ddc28kWc8d+YBtldn0eV+kqcjGfmQTVigq9s6EuKdfT9nl5vDnN68lig1yg rKNSe/206egSdsVvu7h8LrOQMDT8CmIl6lcFXJ1xlcC/BFOx8moTpICOwtvgQxwsbStjkr egm9903o5v7m3x1gOPryTaLG1U6WYOWsXBgfjta6p/E+8GScN59e24agDF2Pzr5Rxpa1zn kuyKdpP0DJIhwZWm2/YRpQHnOIUFEmTE7fgwuzMIDs42UT3bWHwVZylKqPnModAKkz/a5o ANgfiYGmFqmi41hIDxfslh6rfhQNw0WDFUAdp12g9Tf01boCDhc8wEh8V9GDyg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1600980108; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=7WNniJWdtgjbCmAKCV5jnu3oJVt7te+w/KnOSYyq8oA=; b=ENLxqsoFgO8+73NZNe5v++5gNI5im64u7V6WHDCTITTDQpCLurEvjU2TdPmDJ0WF/8KH0c qyET6F8Udu81VXBg== To: Tom Hromatka , tom.hromatka@oracle.com, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, fweisbec@gmail.com, mingo@kernel.org, adobriyan@gmail.com Subject: Re: [PATCH v2 1/2] tick-sched: Do not clear the iowait and idle times In-Reply-To: <20200915193627.85423-2-tom.hromatka@oracle.com> References: <20200915193627.85423-1-tom.hromatka@oracle.com> <20200915193627.85423-2-tom.hromatka@oracle.com> Date: Thu, 24 Sep 2020 22:41:47 +0200 Message-ID: <87r1qq7vqs.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 15 2020 at 13:36, Tom Hromatka wrote: > Prior to this commit, the cpu idle and iowait data in /proc/stat were > cleared when a CPU goes down. When the CPU came back online, both idle > and iowait times were restarted from 0. Starting a commit message with 'Prior to this commit' is pointless. Describe the factual problem which made you come up with this change. > > This commit preserves the CPU's idle and iowait values when a CPU goes > offline and comes back online. 'This commit does' is just a variation of 'This patch does'. git grep 'This patch' Documentation/process/ Thanks, tglx