From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758252AbZANFQa (ORCPT ); Wed, 14 Jan 2009 00:16:30 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753223AbZANFQU (ORCPT ); Wed, 14 Jan 2009 00:16:20 -0500 Received: from tomts22.bellnexxia.net ([209.226.175.184]:46262 "EHLO tomts22-srv.bellnexxia.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751447AbZANFQU (ORCPT ); Wed, 14 Jan 2009 00:16:20 -0500 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AtgFAA8BbUlMQWt2/2dsb2JhbACBbJMHuFCFbw Date: Wed, 14 Jan 2009 00:16:02 -0500 From: Mathieu Desnoyers To: Greg KH Cc: Zhaolei , ltt-dev@lists.casi.polymtl.ca, linux-kernel@vger.kernel.org, Andrew Morton Subject: Re: [ltt-dev] [PATCH 1/2] Make lttctl mount debugfs automatically Message-ID: <20090114051602.GA14786@Krystal> References: <49646208.7070607@cn.fujitsu.com> <4964BA2B.30200@polymtl.ca> <20090108144430.GA3778@Krystal> <7C0A417AB5B84CDCB9A9484C4E13A08C@zhaoleiwin> <20090109033021.GA25504@Krystal> <20090113235419.GA20644@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline In-Reply-To: <20090113235419.GA20644@suse.de> X-Editor: vi X-Info: http://krystal.dyndns.org:8080 X-Operating-System: Linux/2.6.21.3-grsec (i686) X-Uptime: 00:15:23 up 13 days, 5:13, 1 user, load average: 0.46, 0.46, 0.33 User-Agent: Mutt/1.5.16 (2007-06-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Greg KH (gregkh@suse.de) wrote: > On Thu, Jan 08, 2009 at 10:30:22PM -0500, Mathieu Desnoyers wrote: > > * Zhaolei (zhaolei@cn.fujitsu.com) wrote: > > > * From: "Mathieu Desnoyers" > > > >* Zhaolei (zhaolei@cn.fujitsu.com) wrote: > > > >> * From: "Pierre-Marc Fournier" > > > >> > Zhaolei wrote: > > > >> >> lttctl need debugfs mounted, > > > >> >> This patch make lttctl mount debugfs automatically when it is not mounted. > > > >> >> > > > >> > > > > >> > Isn't having a utility such as lttctl mount filesystems against standard > > > >> > unix semantics? Can you give an example of another standard command that > > > >> > uses a filesystem and that tries to mount it if it isn't already > > > >> > mounted? > > > >> Hello, Pierre-Marc, > > > >> > > > >> I can give a an example. > > > >> It is SystemTap. > > > >> > > > > > > > > No offence, but can you find an example which is not explicitly > > > > described as "bad taste" example by many people in the Linux kernel > > > > community ? > > > Hello, Mathieu > > > > > > I can't find another example of mounting debugfs automatically. > > Have you looked? openSUSE mounts it automatically, and I think Fedora > also does so. > It makes sense for a whole distribution to mount debugfs automatically, but is it OK for a single userspace application to have this kind of behavior ? Mathieu > thanks, > > greg k-h > -- Mathieu Desnoyers OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68