From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261458AbVGLOkj (ORCPT ); Tue, 12 Jul 2005 10:40:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261441AbVGLOiO (ORCPT ); Tue, 12 Jul 2005 10:38:14 -0400 Received: from mail.ccur.com ([208.248.32.212]:23943 "EHLO flmx.iccur.com") by vger.kernel.org with ESMTP id S261466AbVGLOhM (ORCPT ); Tue, 12 Jul 2005 10:37:12 -0400 Subject: Re: Merging relayfs? From: Steve Rotolo To: Greg KH Cc: Karim Yaghmour , Tom Zanussi , akpm@osdl.org, linux-kernel@vger.kernel.org, varap@us.ibm.com, richardj_moore@uk.ibm.com In-Reply-To: <20050712052333.GA11614@kroah.com> References: <17107.6290.734560.231978@tut.ibm.com> <20050712030555.GA1487@kroah.com> <42D3331F.8020705@opersys.com> <20050712032424.GA1742@kroah.com> <42D33E99.7030101@opersys.com> <20050712043056.GC2363@kroah.com> <42D349C9.3060805@opersys.com> <20050712052333.GA11614@kroah.com> Content-Type: text/plain Organization: Concurrent Computer Corporation Message-Id: <1121179018.1438.14.camel@whiz> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.5 (1.4.5-1) Date: Tue, 12 Jul 2005 10:36:58 -0400 Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 12 Jul 2005 14:37:12.0439 (UTC) FILETIME=[30D35870:01C586EF] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2005-07-12 at 01:23, Greg KH wrote: > And you _are_ doing kernel debugging and tracing with ltt, what's wrong > with admitting that? > Hi. I think that viewing tracing tools like LTT and systemtap as strictly kernel debug tools is very short-sighted. With a good post-processing tool, tracing is very useful to application developers who can benefit by visualizing the interaction between user-level tasks and the OS as well as the synchronization of multiple tasks/threads. IOW, tracing is in many ways an _application_ debug tool, not a _kernel_ debug tool. And application developers usually do not want to run a debug kernel. I would like to see relayfs merged. -- Steve Rotolo