From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753349AbXDYPBe (ORCPT ); Wed, 25 Apr 2007 11:01:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754116AbXDYPBe (ORCPT ); Wed, 25 Apr 2007 11:01:34 -0400 Received: from 85-126-107-146.static.sdsl-line.inode.at ([85.126.107.146]:1788 "EHLO mail.contec.at" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753349AbXDYPBd (ORCPT ); Wed, 25 Apr 2007 11:01:33 -0400 From: Manfred Gruber To: linux-kernel@vger.kernel.org Subject: Re: preempt_rt bug or warn on arm v4t Date: Wed, 25 Apr 2007 17:02:09 +0200 User-Agent: KMail/1.6.2 References: <200704201306.08066.m.gruber@tirol.com> <1177074102.3636.49.camel@localhost.localdomain> <200704201526.40785.m.gruber@tirol.com> In-Reply-To: <200704201526.40785.m.gruber@tirol.com> Cc: tglx@linutronix.de, Jan Altenberg , Ingo Molnar MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-2" Content-Transfer-Encoding: 7bit Message-Id: <200704251702.09125.m.gruber@tirol.com> X-OriginalArrivalTime: 25 Apr 2007 15:01:28.0812 (UTC) FILETIME=[9A393AC0:01C7874A] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi ! Gerrit Binnenmars pointed out that others have the same problem: http://linux.omap.com/pipermail/linux-omap-open-source/2007-April/009535.html: http://article.gmane.org/gmane.linux.distributions.gumstix.general/21376/match=gumstix+realtime+bug+sched+c Jan Altenberg showed me that in include/asm-arm/system.h I should comment out this line: #define __ARCH_WANT_INTERRUPTS_ON_CTXSW Without this line, irqs are disabled on context switches. But this is only a change that the WARN dose not more occure. Is this now a hack or the sollution? Hopfully some RT hacker can look deeper, and find what is wrong. thanks regards manfred Am Freitag, 20. April 2007 15:26 schrieben Sie: > hi jan ! > > Am Freitag, 20. April 2007 15:01 schrieben Sie: > > > I am using 2.6.21-rc7 with Preempt_rt Patch 2.6.20-rc6-rt0 on ep93xx. > > > > Do you mean 2.6.21-rc6-rt0? > > sorry yes 2.6.21-rc6-rt0. > > > > This oops does not trigger in preempt_rt patch is applied. > > > > It does only appear, when the preempt_rt patch is applied. Did I get you > > right? > > correct > > regards manfred > - > 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/