Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758886Ab1D1KMN (ORCPT ); Thu, 28 Apr 2011 06:12:13 -0400 Received: from mailout-de.gmx.net ([213.165.64.23]:41832 "HELO mailout-de.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752809Ab1D1KMJ (ORCPT ); Thu, 28 Apr 2011 06:12:09 -0400 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX187dzwaAgE7J1ZcPlg9eHBgLCY8BLl5NHss8bYjih pEQwrFDzOOoCNx Subject: Re: 2.6.39-rc4+: Kernel leaking memory during FS scanning, regression? From: Mike Galbraith To: Thomas Gleixner Cc: sedat.dilek@gmail.com, Bruno =?ISO-8859-1?Q?Pr=E9mont?= , Linus Torvalds , Ingo Molnar , Peter Zijlstra , "Paul E. McKenney" , Mike Frysinger , KOSAKI Motohiro , LKML , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, "Paul E. McKenney" , Pekka Enberg In-Reply-To: References: <20110425180450.1ede0845@neptune.home> <20110425190032.7904c95d@neptune.home> <20110425203606.4e78246c@neptune.home> <20110425191607.GL2468@linux.vnet.ibm.com> <20110425231016.34b4293e@neptune.home> <20110425214933.GO2468@linux.vnet.ibm.com> <20110426081904.0d2b1494@pluto.restena.lu> <20110426112756.GF4308@linux.vnet.ibm.com> <20110426183859.6ff6279b@neptune.home> <20110426190918.01660ccf@neptune.home> <20110427081501.5ba28155@pluto.restena.lu> <20110427204139.1b0ea23b@neptune.home> Content-Type: text/plain; charset="UTF-8" Date: Thu, 28 Apr 2011 12:12:02 +0200 Message-ID: <1303985522.7460.23.camel@marge.simson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.32.1 Content-Transfer-Encoding: 8bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1801 Lines: 55 On Thu, 2011-04-28 at 11:40 +0200, Thomas Gleixner wrote: > On Thu, 28 Apr 2011, Sedat Dilek wrote: > > On Thu, Apr 28, 2011 at 11:09 AM, Thomas Gleixner wrote: > > > Bruno, > > > > > > On Thu, 28 Apr 2011, Thomas Gleixner wrote: > > >> On Wed, 27 Apr 2011, Bruno Prémont wrote: > > >> I need some sleep now, but I will try to come up with sensible > > >> debugging tomorrow unless Paul or someone else beats me to it. > > > > > > can you please add the patch below and provide the /proc/sched_debug > > > output when the problem shows up again? > > > > > > Thanks, > > > > > > tglx > > > > > > --- > > > kernel/sched.c | 3 --- > > > 1 file changed, 3 deletions(-) > > > > > > Index: linux-2.6/kernel/sched.c > > > =================================================================== > > > --- linux-2.6.orig/kernel/sched.c > > > +++ linux-2.6/kernel/sched.c > > > @@ -642,9 +642,6 @@ static void update_rq_clock(struct rq *r > > > { > > > s64 delta; > > > > > > - if (rq->skip_clock_update) > > > - return; > > > - > > > delta = sched_clock_cpu(cpu_of(rq)) - rq->clock; > > > rq->clock += delta; > > > update_rq_clock_task(rq, delta); > > > > Referring to [1]? > > > > - Sedat - > > > > [1] http://lkml.org/lkml/2011/4/22/35 > > Kinda, but I suspect there is more wrong with that optimization thing > for yet unknown reasons. It's definitely getting in the way in the throttled to unthrottled RT when otherwise idle case. Removing it to test is a good idea. -Mike -- 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/