Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932127AbWCZWFI (ORCPT ); Sun, 26 Mar 2006 17:05:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932144AbWCZWFI (ORCPT ); Sun, 26 Mar 2006 17:05:08 -0500 Received: from lirs02.phys.au.dk ([130.225.28.43]:3053 "EHLO lirs02.phys.au.dk") by vger.kernel.org with ESMTP id S932127AbWCZWFG (ORCPT ); Sun, 26 Mar 2006 17:05:06 -0500 Date: Sun, 26 Mar 2006 23:04:59 +0100 (MET) From: Esben Nielsen To: Ingo Molnar , cc: linux-kernel@vger.kernel.org Subject: Re: 2.6.16-rt7 and deadlock detection. In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1462 Lines: 47 On Sun, 26 Mar 2006, Esben Nielsen wrote: > I don't get any print outs of any deadlock detection with many of my > tests. > When there is a deadlock down() simply returns instead of blocking > forever. rt_mutex_slowlock seems to return -EDEADLK even though caller didn't ask for deadlock detection (detect_deadlock=0). That is bad because then the caller will not check for it. It ought to simply leave the task blocked. It only happens with CONFIG_DEBUG_RT_MUTEXES. That one also messes up the task->pi_waiters as earlier reported. Esben > > Esben > > > > On Sun, 26 Mar 2006, Esben Nielsen wrote: > > > It just looks like also normal, non-rt tasks are boosting. > > > > Esben > > > > > > - > > 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/ > > > > - > 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/ > - 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/