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=-2.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT 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 2BE5DC04EBD for ; Tue, 16 Oct 2018 08:12:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DBFEB20866 for ; Tue, 16 Oct 2018 08:12:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="PJOcElll" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DBFEB20866 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727123AbeJPQBc (ORCPT ); Tue, 16 Oct 2018 12:01:32 -0400 Received: from mail-pg1-f178.google.com ([209.85.215.178]:33068 "EHLO mail-pg1-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726944AbeJPQBc (ORCPT ); Tue, 16 Oct 2018 12:01:32 -0400 Received: by mail-pg1-f178.google.com with SMTP id y18-v6so10487630pge.0; Tue, 16 Oct 2018 01:12:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=K9ErhGaOwlvn70EuZYOINk0AgswN6DoWy2Wi43altDo=; b=PJOcElllHaiNtG2fa7U3FymT0mZpxvulSaal6ejNc1zOJRqPRtmb4SjuO/cxyxqtGN nPRYUiHzS1GdyZuyieqsEW/wjrfgkMC4wv34oqBRWBTiYyQz9uNSPtCoprwOIlcv9yHg fMJF+5IgQmpE437ERlJ8EZPLTOvuhLKPM22pIAxf4RYMoTx+EVWqwuDGHXv2viucbWV/ bVy3A55UsoJ2P+otVKpy0XTMKgXj3ZM4FnFFvXBDiT6/qLvaMGhgE7Lhd+VD94rZC7du E+g9Yq6gIZXwL8UcK6GueCCcCwTna5U4suFZVQsVwSsGJSUNx14DoYmQqozH4V/kBm24 uNvg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=K9ErhGaOwlvn70EuZYOINk0AgswN6DoWy2Wi43altDo=; b=h73FhFvcmbfbG389e6LuWoay2BDYkC7fH8EjBUGgZKk6DMoY8SL19L6NzBD3ivoZQt ay0zNk8TiDkHMNPf20eDiSqR936QGF+4uRpIgy0FMFohnV54sG7+mAYaI9tGC7YbrgId 7WXwzIR50hJfVhxXhaj0srQD+FNYcCZnOpm+nh2G1Aj4jaf5XefN4CeV5vDvkt+dvgZJ 6GjrpwKSlqB/UQkdFb51KlL/n1fNjm8SYAJAJk13pYt23Xir3gCXqtfjjQlMXNFrUIDM VPVuXZQlrqgOtH7BAqDhlMb+ri2BSpAuxSq+A2uRtKR2t+c202aJ7ieia8eci9UV53Z5 eDIg== X-Gm-Message-State: ABuFfojzxxYSS8TeCaVjFBYUGlZVprUbiJu5piFT/8p/K9SyYF+y2i07 ujMv+17O0+6QgI9bJQJE6qg= X-Google-Smtp-Source: ACcGV63UgF5hfj/WL4WzoEi3DZ6VmypXTUnlBi0dVrJ8kht7v36Hin55iTOP7i7DC1cdBAedmEI3VA== X-Received: by 2002:a65:655a:: with SMTP id a26-v6mr19186060pgw.389.1539677538352; Tue, 16 Oct 2018 01:12:18 -0700 (PDT) Received: from localhost ([175.223.10.117]) by smtp.gmail.com with ESMTPSA id n80-v6sm21170256pfh.166.2018.10.16.01.12.16 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 16 Oct 2018 01:12:17 -0700 (PDT) Date: Tue, 16 Oct 2018 17:12:13 +0900 From: Sergey Senozhatsky To: Peter Zijlstra Cc: Sergey Senozhatsky , linux-kernel@vger.kernel.org, Petr Mladek , Steven Rostedt , Daniel Wang , Andrew Morton , Linus Torvalds , Greg Kroah-Hartman , Alan Cox , Jiri Slaby , Peter Feiner , linux-serial@vger.kernel.org, Sergey Senozhatsky Subject: Re: [RFC][PATCHv2 0/4] less deadlock prone serial consoles Message-ID: <20181016081213.GA32747@jagdpanzerIV> References: <20181016050428.17966-1-sergey.senozhatsky@gmail.com> <20181016072328.GA4030@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181016072328.GA4030@hirez.programming.kicks-ass.net> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On (10/16/18 09:23), Peter Zijlstra wrote: > On Tue, Oct 16, 2018 at 02:04:24PM +0900, Sergey Senozhatsky wrote: > > Hello, > > > > > > RFC > > > > > > The patch set reduces the number of ways serial consoles > > can deadlock the system, including the recently reported deadlock > > in panic(). > > That's what I use early_printk for... :-) I've been waiting for this comment ;-) -ss