From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261228AbVHAV0J (ORCPT ); Mon, 1 Aug 2005 17:26:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261252AbVHAVYA (ORCPT ); Mon, 1 Aug 2005 17:24:00 -0400 Received: from gateway-1237.mvista.com ([12.44.186.158]:4340 "EHLO av.mvista.com") by vger.kernel.org with ESMTP id S261298AbVHAVVp (ORCPT ); Mon, 1 Aug 2005 17:21:45 -0400 Subject: Re: [patch] Real-Time Preemption, -RT-2.6.13-rc4-V0.7.52-01 From: Daniel Walker Reply-To: dwalker@mvista.com To: Steven Rostedt Cc: Ingo Molnar , linux-kernel@vger.kernel.org In-Reply-To: <1122920564.6759.15.camel@localhost.localdomain> References: <20050730160345.GA3584@elte.hu> <1122920564.6759.15.camel@localhost.localdomain> Content-Type: text/plain Organization: MontaVista Date: Mon, 01 Aug 2005 14:20:38 -0700 Message-Id: <1122931238.4623.17.camel@dhcp153.mvista.com> Mime-Version: 1.0 X-Mailer: Evolution 2.0.2 (2.0.2-3) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2005-08-01 at 14:22 -0400, Steven Rostedt wrote: > Ingo, > > What's with the "BUG: possible soft lockup detected on CPU..."? I'm > getting a bunch of them from the IDE interrupt. It's not locking up, > but it does things that probably do take some time. Is this really > necessary? Here's an example dump: > > -- Steve > > Note: I added the curr=%s:%d,current->comm,current->pid just to see who > was at fault. It means that IRQ 14 is running for a long time as an RT task .. btw, the curr=%s:%d information duplicates some in the "show all held locks" section . I could base it off current_sched_time() to only trigger if the task has actually been running for 10 seconds, instead of just assuming that it has.. Daniel