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=-5.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_NEOMUTT 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 57119C00449 for ; Wed, 3 Oct 2018 09:23:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 242A220835 for ; Wed, 3 Oct 2018 09:23:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 242A220835 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.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 S1727529AbeJCQKf (ORCPT ); Wed, 3 Oct 2018 12:10:35 -0400 Received: from mx2.suse.de ([195.135.220.15]:55300 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726216AbeJCQKf (ORCPT ); Wed, 3 Oct 2018 12:10:35 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 7C638AFD9; Wed, 3 Oct 2018 09:23:01 +0000 (UTC) Date: Wed, 3 Oct 2018 11:23:01 +0200 From: Petr Mladek To: Sergey Senozhatsky , Steven Rostedt Cc: Peter Zijlstra , Sergey Senozhatsky , linux-kernel@vger.kernel.org Subject: Re: [PATCH] printk: Do not miss new messages when replaying the log Message-ID: <20181003092301.n5qazxuvjadlbkel@pathway.suse.cz> References: <20180913123406.14378-1-pmladek@suse.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180913123406.14378-1-pmladek@suse.com> User-Agent: NeoMutt/20170421 (1.8.2) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu 2018-09-13 14:34:06, Petr Mladek wrote: > The variable "exclusive_console" is used to reply all existing messages > on a newly registered console. It is cleared when all messages are out. > > The problem is that new messages might appear in the meantime. These > are then visible only on the exclusive console. > > The obvious solution is to clear "exclusive_console" after we replay > all messages that were already proceed before we started the reply. > > Reported-by: Sergey Senozhatsky > Signed-off-by: Petr Mladek > Acked-by: Sergey Senozhatsky JFYI, I have pushed this into printk.git, for-4.20 branch. Best Regards, Petr