From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262520AbVFJNez (ORCPT ); Fri, 10 Jun 2005 09:34:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262523AbVFJNez (ORCPT ); Fri, 10 Jun 2005 09:34:55 -0400 Received: from mail2.utc.com ([192.249.46.191]:25495 "EHLO mail2.utc.com") by vger.kernel.org with ESMTP id S262520AbVFJNee (ORCPT ); Fri, 10 Jun 2005 09:34:34 -0400 Message-ID: <42A996DC.4090300@cybsft.com> Date: Fri, 10 Jun 2005 08:34:20 -0500 From: "K.R. Foley" Organization: Cybersoft Solutions, Inc. User-Agent: Mozilla Thunderbird 1.0.2 (X11/20050317) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Ingo Molnar CC: linux-kernel@vger.kernel.org, "Eugeny S. Mints" , Daniel Walker Subject: Re: [patch] Real-Time Preemption, -RT-2.6.12-rc6-V0.7.48-00 References: <20050608112801.GA31084@elte.hu> <42A7135C.5010704@cybsft.com> <42A72A53.5050809@cybsft.com> <20050608191848.GA3411@elte.hu> <20050609113916.GA8904@elte.hu> In-Reply-To: <20050609113916.GA8904@elte.hu> X-Enigmail-Version: 0.89.5.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ingo Molnar wrote: > * Ingo Molnar wrote: > > >>># CONFIG_DEBUG_RT_LOCKING_MODE is not set >>> >>>it seems to work fine. With the above enabled it hangs on both of my >>>SMP systems as described above. :-/ >> >>ahh ... i'll try to reproduce it that way. > > > found the bug - it was the incorrect initialization of > debug_slock/rwlock. I've uploaded -48-02 with the fix. This release also > includes a new debugging feature: CONFIG_DETECT_SOFTLOCKUP, which works > similar to the NMI watchdog but detects soft (==no reschedules) lockups. > I've also converted a few more local_irq_*() calls to raw_local_irq_*() > calls. > > Ingo > Sorry for not reporting back sooner on this, I just kept getting interrupted. My problems seem to be resolved on my SMP systems, even when CONFIG_DEBUG_RT_LOCKING_MODE=y I should note that I didn't actually try with the version above because it had been updated before I got to it. -- kr