Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764524AbZDCOUs (ORCPT ); Fri, 3 Apr 2009 10:20:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753655AbZDCOUg (ORCPT ); Fri, 3 Apr 2009 10:20:36 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:50554 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751563AbZDCOUf (ORCPT ); Fri, 3 Apr 2009 10:20:35 -0400 Date: Fri, 3 Apr 2009 16:17:43 +0200 From: Ingo Molnar To: Eduard - Gabriel Munteanu Cc: Pekka Enberg , Mel Gorman , Jason Baron , linux-kernel@vger.kernel.org, mm-commits@vger.kernel.org, alexn@dsv.su.se, akpm@linux-foundation.org, alexn@telia.com, apw@shadowen.org, cl@linux-foundation.org, haveblue@us.ibm.com, kamezawa.hiroyu@jp.fujitu.com, Peter Zijlstra , Steven Rostedt , Fr?d?ric Weisbecker Subject: Re: + page-owner-tracking.patch added to -mm tree Message-ID: <20090403141743.GF8875@elte.hu> References: <200903312321.n2VNLAMI006236@imap1.linux-foundation.org> <20090401111540.GC15442@elte.hu> <20090401125506.GA6406@csn.ul.ie> <20090401131713.GQ12966@elte.hu> <20090401133220.GB6406@csn.ul.ie> <20090401134917.GC18677@elte.hu> <1238597398.23857.11.camel@penberg-laptop> <20090401152251.GB23390@elte.hu> <1238656331.26286.17.camel@penberg-laptop> <20090403042131.GA15669@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090403042131.GA15669@localhost> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 835 Lines: 21 * Eduard - Gabriel Munteanu wrote: > One thing I'm not sure about this patch is whether it manages to > record an allocation only once, i.e. does it log a single event > when/if the slab allocator requests pages? Some time ago I sent a > patch adding GFP_NOTRACE to gfp.h, but was rejected. Maybe this > could be a way out of the mess. > > (GFP_NOTRACE would also allow us to log "backend" allocations > easily and treat them separately, for the record, or simply filter > them out.) makes a lot of sense IMO to annotate these via a GFP flag. Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/