Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261307AbUK0HOm (ORCPT ); Sat, 27 Nov 2004 02:14:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261304AbUK0HIp (ORCPT ); Sat, 27 Nov 2004 02:08:45 -0500 Received: from zeus.kernel.org ([204.152.189.113]:32190 "EHLO zeus.kernel.org") by vger.kernel.org with ESMTP id S261308AbUKZTHV (ORCPT ); Fri, 26 Nov 2004 14:07:21 -0500 Date: Thu, 25 Nov 2004 13:20:29 +0100 From: Ingo Molnar To: Rui Nuno Capela Cc: linux-kernel@vger.kernel.org, Lee Revell , mark_h_johnson@raytheon.com, "K.R. Foley" , Bill Huey , Adam Heath , Florian Schmidt , Thomas Gleixner , Michal Schmidt , Fernando Pablo Lopez-Lezcano , Karsten Wiese , Gunther Persoons , emann@mrv.com, Shane Shrybman , Amit Shah , Esben Nielsen Subject: Re: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm3-V0.7.31-0 Message-ID: <20041125122029.GA23284@elte.hu> References: <20041117124234.GA25956@elte.hu> <20041118123521.GA29091@elte.hu> <20041118164612.GA17040@elte.hu> <20041122005411.GA19363@elte.hu> <20041123175823.GA8803@elte.hu> <20041124101626.GA31788@elte.hu> <20041124112745.GA3294@elte.hu> <21889.195.245.190.93.1101377024.squirrel@195.245.190.93> <20041125120133.GA22431@elte.hu> <57563.195.245.190.93.1101381289.squirrel@195.245.190.93> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <57563.195.245.190.93.1101381289.squirrel@195.245.190.93> User-Agent: Mutt/1.4.1i X-ELTE-SpamVersion: MailScanner 4.31.6-itk1 (ELTE 1.2) SpamAssassin 2.63 ClamAV 0.73 X-ELTE-VirusStatus: clean X-ELTE-SpamCheck: no X-ELTE-SpamCheck-Details: score=-4.9, required 5.9, autolearn=not spam, BAYES_00 -4.90 X-ELTE-SpamLevel: X-ELTE-SpamScore: -4 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 832 Lines: 24 * Rui Nuno Capela wrote: > Ingo Molnar wrote: > > > > the -RT patchset doesnt properly detect my fd0 device, so there's > > definitely something broken in that area. The unpatched -rc2-mm3 kernel > > detects it fine. Might be an effect of IRQ threading - the floppy > > hardware/driver is a fragile beast. > > > > But it works flawlessly on my laptop (P4/UP). Could it be SMP/HT > related? yeah, could be, the failure i'm seeing is on SMP. On SMP if you have interrupt threads then concurrency is higher. fd0 gets detected fine when i turn IRQ threading off. Ingo - 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/