Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263484AbUJ2VUG (ORCPT ); Fri, 29 Oct 2004 17:20:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263575AbUJ2VS4 (ORCPT ); Fri, 29 Oct 2004 17:18:56 -0400 Received: from pop.gmx.de ([213.165.64.20]:18870 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S263484AbUJ2VOL (ORCPT ); Fri, 29 Oct 2004 17:14:11 -0400 X-Authenticated: #4399952 Date: Fri, 29 Oct 2004 23:31:17 +0200 From: Florian Schmidt To: Ingo Molnar Cc: Paul Davis , Thomas Gleixner , LKML , Lee Revell , mark_h_johnson@raytheon.com, Bill Huey , Adam Heath , Michal Schmidt , Fernando Pablo Lopez-Lezcano , Karsten Wiese , jackit-devel , Rui Nuno Capela Subject: Re: [Fwd: Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0.4] Message-ID: <20041029233117.6d29c383@mango.fruits.de> In-Reply-To: <20041029204220.GA6727@elte.hu> References: <20041029183256.564897b2@mango.fruits.de> <20041029162316.GA7743@elte.hu> <20041029163155.GA9005@elte.hu> <20041029191652.1e480e2d@mango.fruits.de> <20041029170237.GA12374@elte.hu> <20041029170948.GA13727@elte.hu> <20041029193303.7d3990b4@mango.fruits.de> <20041029172151.GB16276@elte.hu> <20041029172243.GA19630@elte.hu> <20041029203619.37b54cba@mango.fruits.de> <20041029204220.GA6727@elte.hu> X-Mailer: Sylpheed-Claws 0.9.12b (GTK+ 1.2.10; i386-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1077 Lines: 31 On Fri, 29 Oct 2004 22:42:20 +0200 Ingo Molnar wrote: > > compiles and boots fine. no observable change in xrun behaviour > > though. > > do you compile jackd from sources? If yes then could you try the patch > below? With this added, the kernel will produce a stackdump whenever > jackd does an 'illegal' sleep. > > Also, could you do a small modification to kernel/sched.c and remove > this line: > > send_sig(SIGUSR1, current, 1); > > just to make it easier to get Jack up and running. (by default an > atomicity violation triggers a signal to make it easier to debug it in > userspace, but i suspect there will be alot of such violations so jackd > would stop all the time.) [snip] will do so. btw: i think i'm a bit confused right now. What debugging features should i have enabled for this test? flo - 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/