From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935479AbeEXCVv (ORCPT ); Wed, 23 May 2018 22:21:51 -0400 Received: from mail-pg0-f66.google.com ([74.125.83.66]:45947 "EHLO mail-pg0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935331AbeEXCVs (ORCPT ); Wed, 23 May 2018 22:21:48 -0400 X-Google-Smtp-Source: AB8JxZqLA9xGkC5Ezu72dlpz9/zOMCnLqhYTaPWzz/cfAIBGH8zq7GoFh6tsZvo+YPlUrrnlWxlk0g== Date: Thu, 24 May 2018 11:21:43 +0900 From: Sergey Senozhatsky To: Dmitry Vyukov Cc: Petr Mladek , Tetsuo Handa , Sergey Senozhatsky , Sergey Senozhatsky , syzkaller , Steven Rostedt , Fengguang Wu , LKML , Linus Torvalds , Andrew Morton Subject: Re: [PATCH] printk: inject caller information into the body of message Message-ID: <20180524022143.GB23443@jagdpanzerIV> References: <201805110238.w4B2cIGH079602@www262.sakura.ne.jp> <20180511062151.GA18160@jagdpanzerIV> <20180511095004.GA6575@jagdpanzerIV> <201805112058.AAB05258.HJQFFOMFOVtOSL@I-love.SAKURA.ne.jp> <20180517112135.GB20796@jagdpanzerIV> <20180518121506.wilixxkznbtskw34@pathway.suse.cz> <20180518125439.d5ve654eez6vne45@pathway.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.0 (2018-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On (05/18/18 15:08), Dmitry Vyukov wrote: [..] > >> What consoles do support it? > >> We are interested at least in qemu console, GCE console and Android > >> phone consoles. But it would be pity if this can't be used on various > >> development boards too. > > > > Only the netconsole is able to show the extended (dict) > > information at the moment. Search for CON_EXTENDED flag. > > Then we won't be able to use it. And we can't pipe from devkmsg_read > in user-space, because we need this to work when kernel is broken in > various ways... Hmm. Well, basically, any console that has CON_EXTENDED bit set; which is, probably, only netconsole at this point. Do you use slow serial consoles? OK, seems like extended printk records won't make you happy after all :) -ss