Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756632AbZGIIDC (ORCPT ); Thu, 9 Jul 2009 04:03:02 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752635AbZGIICq (ORCPT ); Thu, 9 Jul 2009 04:02:46 -0400 Received: from viefep19-int.chello.at ([62.179.121.39]:17099 "EHLO viefep19-int.chello.at" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751452AbZGIICn (ORCPT ); Thu, 9 Jul 2009 04:02:43 -0400 X-SourceIP: 213.93.53.227 Subject: Re: [PATCH 1/3] Increase lockdep limits: MAX_STACK_TRACE_ENTRIES From: Peter Zijlstra To: Dave Jones Cc: Joao Correia , LKML , =?ISO-8859-1?Q?Am=E9rico?= Wang , Frederic Weisbecker , Arjan van de Ven , Catalin Marinas In-Reply-To: <20090709043931.GA11391@redhat.com> References: <1246980836.9777.5.camel@twins> <1246981444.9777.11.camel@twins> <1246982101.9777.15.camel@twins> <20090708172248.GB2521@redhat.com> <1247078164.16156.18.camel@laptop> <20090709043931.GA11391@redhat.com> Content-Type: text/plain Date: Thu, 09 Jul 2009 10:02:36 +0200 Message-Id: <1247126556.9777.323.camel@twins> Mime-Version: 1.0 X-Mailer: Evolution 2.26.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1006 Lines: 25 On Thu, 2009-07-09 at 00:39 -0400, Dave Jones wrote: > On Wed, Jul 08, 2009 at 08:36:04PM +0200, Peter Zijlstra wrote: > > Looking at a lockdep dump hch gave me I can see that that is certainly > > possible, I see tons of very deep callchains. > > > > /me wonders if we're getting significantly deeper.. > > Looking at /proc/lockdep, I'm curious.. > Take a look at http://davej.fedorapeople.org/lockdep > scroll down to c12c0924 > > What's up with all those old_style_spin_init's ? What kernel are you running? Does your lib/dma_debug.c:dma_debug_init() have spin_lock_init() in that HASH_SIZE loop? If so, then there's someone else doing silly, if not, you seriously need to upgrade your kernel because you're running something ancient, like .30 :-) -- 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/