Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261387AbUKBPSk (ORCPT ); Tue, 2 Nov 2004 10:18:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261873AbUKBPOa (ORCPT ); Tue, 2 Nov 2004 10:14:30 -0500 Received: from mx2.elte.hu ([157.181.151.9]:7656 "EHLO mx2.elte.hu") by vger.kernel.org with ESMTP id S261250AbUKBPGo (ORCPT ); Tue, 2 Nov 2004 10:06:44 -0500 Date: Tue, 2 Nov 2004 16:06:34 +0100 From: Ingo Molnar To: Thomas Gleixner Cc: Florian Schmidt , Lee Revell , Paul Davis , LKML , mark_h_johnson@raytheon.com, Bill Huey , Adam Heath , Michal Schmidt , Fernando Pablo Lopez-Lezcano , Karsten Wiese , jackit-devel , Rui Nuno Capela , "K.R. Foley" Subject: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0.6.8 Message-ID: <20041102150634.GA24871@elte.hu> References: <1099227269.1459.45.camel@krustophenia.net> <20041031131318.GA23437@elte.hu> <20041031134016.GA24645@elte.hu> <20041031162059.1a3dd9eb@mango.fruits.de> <20041031165913.2d0ad21e@mango.fruits.de> <20041031200621.212ee044@mango.fruits.de> <20041101134235.GA18009@elte.hu> <20041101135358.GA19718@elte.hu> <20041101140630.GA20448@elte.hu> <1099324040.3337.32.camel@thomas> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1099324040.3337.32.camel@thomas> 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: 974 Lines: 26 * Thomas Gleixner wrote: > > Thomas, can you confirm that this kernel fixes the irqs-off latencies? > > (the priority loop indeed was done with irqs turned off.) > > The latencies are still there. I have the feeling it's worse than 0.6.2. update to others: Thomas debugged this problem today and found the place that kept irqs disabled for a long time: it was update_process_times(). (which i recently touched to break latencies there - but forgot that the lock is an irqs-off lock!) i've uploaded a fixed kernel (-V0.6.8) to: http://redhat.com/~mingo/realtime-preempt/ (this kernel also has the module-put-unlock-kernel fix that should solve the other warning reported by Thomas and Bill.) 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/