From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from toip7.srvr.bell.ca ([209.226.175.124]) by tomts40-srv.bellnexxia.net (InterMail vM.5.01.06.13 201-253-122-130-113-20050324) with ESMTP id <20080819202317.GDFS1625.tomts40-srv.bellnexxia.net@toip7.srvr.bell.ca> for ; Tue, 19 Aug 2008 16:23:17 -0400 Date: Tue, 19 Aug 2008 16:23:16 -0400 From: Mathieu Desnoyers Subject: Re: [PATCH 1/5] Revert "kmemtrace: fix printk format warnings" Message-ID: <20080819202316.GA4188@Krystal> References: <1219167807-5407-1-git-send-email-eduard.munteanu@linux360.ro> <20080819175440.GA5435@localhost> <20080819181652.GA29757@Krystal> <20080819183203.GB5520@localhost> <48AB1E43.2010408@cs.helsinki.fi> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline In-Reply-To: <48AB1E43.2010408@cs.helsinki.fi> Sender: owner-linux-mm@kvack.org Return-Path: To: Pekka Enberg Cc: Eduard - Gabriel Munteanu , "Randy.Dunlap" , linux-kernel@vger.kernel.org, linux-mm@kvack.org, mpm@selenic.com, tglx@linutronix.de, rostedt@goodmis.org, cl@linux-foundation.org, tzanussi@gmail.com List-ID: * Pekka Enberg (penberg@cs.helsinki.fi) wrote: > Eduard - Gabriel Munteanu wrote: >> On Tue, Aug 19, 2008 at 02:16:53PM -0400, Mathieu Desnoyers wrote: >>> Question : >>> >>> Is this kmemtrace marker meant to be exposed to userspace ? >>> >>> I suspect not. In all case, not directly. I expect in-kernel probes to >>> be connected on these markers which will get the arguments they need, >>> and maybe access the inner data structures. Anyhow, tracepoints should >>> be used for that, not markers. You can later put markers in the probes >>> which are themselves connected to tracepoints. >>> >>> Tracepoints = in-kernel tracing API. >>> >>> Markers = Data-formatting tracing API, meant to export the data either >>> to user-space in text or binary format. >>> >>> See >>> >>> http://git.kernel.org/?p=linux/kernel/git/compudj/linux-2.6-lttng.git;a=shortlog >>> >>> tracepoint-related patches. >> I think we're ready to try tracepoints. Pekka, could you merge Mathieu's >> tracepoints or otherwise provide a branch where I could submit a >> tracepoint conversion patch for kmemtrace? > > Sorry, that's too much of a hassle for me. I'll happily take your > conversion patch once tracepoints hit mainline. Mathieu, are you aiming for > 2.6.28? Probably. it's in -tip right now, and the new ftrace depends on it. So at least 2.6.28 yes. Mathieu -- Mathieu Desnoyers OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org