From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 31116 invoked by alias); 15 Feb 2007 23:15:10 -0000 Received: (qmail 31108 invoked by uid 22791); 15 Feb 2007 23:15:09 -0000 X-Spam-Status: No, hits=-2.2 required=5.0 tests=AWL,BAYES_00,DNS_FROM_RFC_ABUSE,SPF_PASS X-Spam-Check-By: sourceware.org Received: from e31.co.us.ibm.com (HELO e31.co.us.ibm.com) (32.97.110.149) by sourceware.org (qpsmtpd/0.31) with ESMTP; Thu, 15 Feb 2007 23:15:02 +0000 Received: from westrelay02.boulder.ibm.com (westrelay02.boulder.ibm.com [9.17.195.11]) by e31.co.us.ibm.com (8.13.8/8.13.8) with ESMTP id l1FNExe1026546 for ; Thu, 15 Feb 2007 18:14:59 -0500 Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by westrelay02.boulder.ibm.com (8.13.8/8.13.8/NCO v8.2) with ESMTP id l1FNExTN541024 for ; Thu, 15 Feb 2007 16:14:59 -0700 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id l1FNEwGN021063 for ; Thu, 15 Feb 2007 16:14:59 -0700 Received: from [127.0.0.1] (IBM-BE3QP6HK0F9.beaverton.ibm.com [9.47.16.139]) by d03av02.boulder.ibm.com (8.12.11.20060308/8.12.11) with ESMTP id l1FNEuAS020941; Thu, 15 Feb 2007 16:14:57 -0700 Message-ID: <45D4E96F.7080805@us.ibm.com> Date: Thu, 15 Feb 2007 23:15:00 -0000 From: Vara Prasad User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Andrew Morton CC: "Frank Ch. Eigler" , Mathieu Desnoyers , linux-kernel@vger.kernel.org, Christoph Hellwig , Ingo Molnar , systemtap@sources.redhat.com, ltt-dev@shafik.org Subject: Re: [PATCH 00/05] Linux Kernel Markers - kernel 2.6.20 References: <1171224207118-git-send-email-mathieu.desnoyers@polymtl.ca> <20070214231201.20918c6b.akpm@linux-foundation.org> <20070215141841.6eed5fbb.akpm@linux-foundation.org> In-Reply-To: <20070215141841.6eed5fbb.akpm@linux-foundation.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2007-q1/txt/msg00350.txt.bz2 Andrew Morton wrote: >On 15 Feb 2007 10:28:57 -0500 >fche@redhat.com (Frank Ch. Eigler) wrote: > > > >>akpm wrote: >> >> >> >>>[...] And what can I do with these markers? And once I've done it, >>>are there any userspace applications I can use to get the data out >>>in human-usable form? [...] >>> >>> >>The LTTng user-space programs use it today. Systemtap used to support >>the earlier marker prototype and will be rapidly ported over to this >>new API upon acceptance. >> >> >> > >That's good. > >It would be beneficial if some people from those projects could spare the >cycles to carefully review and runtime test this code. > > Sure, as soon as SystemTap translator supports this new marker mechanism we will give it a spin and report results. >Also, I'm not 100% clear on where we ended up with the huge >static-vs-dynamic flamewar. Did everyone end up happy? Is this patchset a >reasonable compromise? Or do we need a rematch? > > From my view this is a good compromise. We all realized in that long discussion thread that we need a way to mark the code in the middle of functions that can later be activated dynamically. Mathieu's current implementation meets that goal. I will be happy to see this in. Thanks, Vara Prasad