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 0E489C4346E for ; Thu, 24 Sep 2020 08:34:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AD6DE23787 for ; Thu, 24 Sep 2020 08:34:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="ALWdNLiF"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="NxKa9LzJ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727248AbgIXIeZ (ORCPT ); Thu, 24 Sep 2020 04:34:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59358 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727046AbgIXIeZ (ORCPT ); Thu, 24 Sep 2020 04:34:25 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DA6FAC0613CE for ; Thu, 24 Sep 2020 01:34:24 -0700 (PDT) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1600936463; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=EtegJ8fVIFuCiOSfvGCiHOL/tiQeXSNyiBzMrNmz3DM=; b=ALWdNLiF/9XHvH8mcviSPCyUYMGoxx7vJ4Exfpj8HAmhe0BXbXunVcTOP2pUhxLKrlCCYy dETzD3EgQhy0ovJD08+ihCj3K+a0uQ+YXNJOdGEHgxG6Cn7Ax9auc+iTdGpobCDJQTA9fj V+AnVp5KJUnGlLuc56O19H0OS6cgsBkxSEbIQ5yRvrVRz1H74hdVytvizOD0ea5KnPnuag QQT8LD4p0g3H2P2ShU958W90sr9AS+8RhMC6eJX5HVJswrKSkozXTCLC3kXlazD2oq0FUJ 2YSuJXdiv08ym1hZWVGm5BEHnZ7ieC/f0FUnGTb9lMNyk4bZ6TfO4CRclZJOaA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1600936463; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=EtegJ8fVIFuCiOSfvGCiHOL/tiQeXSNyiBzMrNmz3DM=; b=NxKa9LzJQRH5vBdmfQQlaud3qx+yn7OoI+hi8dZwRTkHtHlhXbawFM5H/2Vs+SEM5pvcj8 4UEpTBi14MGw9IAQ== To: qianjun.kernel@gmail.com, peterz@infradead.org, will@kernel.org, luto@kernel.org, linux-kernel@vger.kernel.org Cc: laoar.shao@gmail.com, qais.yousef@arm.com, urezki@gmail.com, jun qian Subject: Re: [PATCH V7 1/4] softirq: Use sched_clock() based timeout In-Reply-To: <20200915115609.85106-2-qianjun.kernel@gmail.com> References: <20200915115609.85106-1-qianjun.kernel@gmail.com> <20200915115609.85106-2-qianjun.kernel@gmail.com> Date: Thu, 24 Sep 2020 10:34:23 +0200 Message-ID: <87y2kz8tf4.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 19:56, qianjun kernel wrote: > From: jun qian > > Replace the jiffies based timeout with a sched_clock() based one. Changelogs have to explain the WHY not the WHAT. What the patch is doing is already in te subject line and the exact WHAT (implementation) is in the patch itself. This applies to all 4 patches in this series. Each wants to have an explanation of why this makes sense and which problem this is trying to solve. Thanks, tglx