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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 85466C28CBC for ; Wed, 6 May 2020 09:46:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 674B22070B for ; Wed, 6 May 2020 09:46:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729138AbgEFJqA (ORCPT ); Wed, 6 May 2020 05:46:00 -0400 Received: from www262.sakura.ne.jp ([202.181.97.72]:57109 "EHLO www262.sakura.ne.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728729AbgEFJqA (ORCPT ); Wed, 6 May 2020 05:46:00 -0400 Received: from fsav402.sakura.ne.jp (fsav402.sakura.ne.jp [133.242.250.101]) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTP id 0469jIKS050826; Wed, 6 May 2020 18:45:18 +0900 (JST) (envelope-from penguin-kernel@i-love.sakura.ne.jp) Received: from www262.sakura.ne.jp (202.181.97.72) by fsav402.sakura.ne.jp (F-Secure/fsigk_smtp/550/fsav402.sakura.ne.jp); Wed, 06 May 2020 18:45:18 +0900 (JST) X-Virus-Status: clean(F-Secure/fsigk_smtp/550/fsav402.sakura.ne.jp) Received: from [192.168.1.9] (M106072142033.v4.enabler.ne.jp [106.72.142.33]) (authenticated bits=0) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTPSA id 0469jCRS050790 (version=TLSv1.2 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 6 May 2020 18:45:18 +0900 (JST) (envelope-from penguin-kernel@i-love.sakura.ne.jp) Subject: Re: [PATCH] printk: Add loglevel for "do not print to consoles". From: Tetsuo Handa To: Sergey Senozhatsky , Petr Mladek Cc: Steven Rostedt , linux-kernel@vger.kernel.org, Dmitry Safonov , Michal Hocko , Yafang Shao References: <20200424024239.63607-1-penguin-kernel@I-love.SAKURA.ne.jp> <20200425004609.GE8982@jagdpanzerIV.localdomain> <842ff40b-a232-6098-4333-996a3033b30a@i-love.sakura.ne.jp> <20200427062117.GC486@jagdpanzerIV.localdomain> <4dae86af-1d9a-f5a8-cff6-aa91ec038a79@i-love.sakura.ne.jp> Message-ID: <344199f1-639b-ee93-2388-57b0549641f9@i-love.sakura.ne.jp> Date: Wed, 6 May 2020 18:45:13 +0900 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <4dae86af-1d9a-f5a8-cff6-aa91ec038a79@i-love.sakura.ne.jp> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2020/04/28 20:33, Tetsuo Handa wrote: > On 2020/04/27 15:21, Sergey Senozhatsky wrote: >>> KERN_NO_CONSOLES is for type of messages where "saved for later analysis" is >>> important but "printed for immediate notification" is not important. >>> In other words, KERN_NO_CONSOLES is NOT for dying messages where "printed for >>> immediate notification" is important. >> >> per-console loglevel is a user configurable parameter. >> KERN_NO_CONSOLES is a hard-coded policy. > > But given that whether to use KERN_NO_CONSOLES is configurable via e.g. sysctl, > KERN_NO_CONSOLES will become a user configurable parameter. What's still wrong? > Any problems remaining?