Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751003AbWEXQyt (ORCPT ); Wed, 24 May 2006 12:54:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751127AbWEXQyt (ORCPT ); Wed, 24 May 2006 12:54:49 -0400 Received: from www.osadl.org ([213.239.205.134]:47069 "EHLO mail.tglx.de") by vger.kernel.org with ESMTP id S1751003AbWEXQyt (ORCPT ); Wed, 24 May 2006 12:54:49 -0400 Subject: Re: Ingo's realtime_preempt patch causes kernel oops From: Thomas Gleixner Reply-To: tglx@linutronix.de To: Steven Rostedt Cc: Sven-Thorsten Dietrich , Yann.LEPROVOST@wavecom.fr, Daniel Walker , linux-kernel@vger.kernel.org, linux-kernel-owner@vger.kernel.org, Ingo Molnar In-Reply-To: <1148488687.24623.67.camel@localhost.localdomain> References: <1148475334.24623.45.camel@localhost.localdomain> <1148476383.5239.54.camel@localhost.localdomain> <1148484729.14683.5.camel@localhost.localdomain> <1148485943.24623.54.camel@localhost.localdomain> <1148486614.5239.63.camel@localhost.localdomain> <1148488687.24623.67.camel@localhost.localdomain> Content-Type: text/plain Date: Wed, 24 May 2006 18:55:06 +0200 Message-Id: <1148489706.5239.68.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1006 Lines: 24 On Wed, 2006-05-24 at 12:38 -0400, Steven Rostedt wrote: > OK I haven't worked on arm much at all. Only had to port one board > before, and didn't need to get too involved. > > Can't two devices share the same interrupt line? Not talking about a > cascading interrupt controller, but two actual devices that can trigger > a single interrupt line. So, if this is the case, how do you disable a > particular source without going to the driver itself? Yeah, the demux code has to go into the device driver to figure that out, which is not hard to do on SoC devices, as the peripherals are usually unique for a given SoC family. PCI and other globally shared devices are completely differnt beasts and you would need a legion of hackers to fix that up. tglx - 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/