Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763539AbYA3RhI (ORCPT ); Wed, 30 Jan 2008 12:37:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758144AbYA3Rgn (ORCPT ); Wed, 30 Jan 2008 12:36:43 -0500 Received: from www.tglx.de ([62.245.132.106]:40860 "EHLO www.tglx.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756801AbYA3Rgm (ORCPT ); Wed, 30 Jan 2008 12:36:42 -0500 Date: Wed, 30 Jan 2008 18:36:12 +0100 (CET) From: Thomas Gleixner To: Peter Zijlstra cc: Oleg Nesterov , Ingo Molnar , linux-kernel@vger.kernel.org Subject: Re: hrtimers and lockdep (was: Re: 2.6.24-rc6: possible recursive locking detected) In-Reply-To: <1201689272.28547.204.camel@lappy> Message-ID: References: <200801040006.47979.rjw@sisk.pl> <20080104083049.GC22803@elte.hu> <20080105071205.GA28936@gondor.apana.org.au> <1199552016.31975.41.camel@lappy> <1199552476.31975.45.camel@lappy> <20080107172239.GA14880@tv-sign.ru> <20080107174908.GB14880@tv-sign.ru> <1200241927.7999.38.camel@lappy> <20080114212741.GA2263@tv-sign.ru> <1201689272.28547.204.camel@lappy> User-Agent: Alpine 1.00 (LFD 882 2007-12-20) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 846 Lines: 25 On Wed, 30 Jan 2008, Peter Zijlstra wrote: > ( trimmed CC list ) > > Sorry for the delay, this message seems to have gotten lost in my > inbox :-/ > > On Tue, 2008-01-15 at 00:27 +0300, Oleg Nesterov wrote: > > On 01/13, Peter Zijlstra wrote: > > > Offtopic question. Why do we have so many lockdep stuff in timer.c and hrtimer.c ? > > We never lock 2 bases at the same time, except in migrate_timers(). We can kill > > double_spin_lock() and base_lock_keys[] and just use spin_lock_nested in > > migrate_timers(), no? > > Lets ask Thomas.. :-) No objections as long as it all works :) tglx -- 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/