Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751120AbWIHWso (ORCPT ); Fri, 8 Sep 2006 18:48:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751150AbWIHWso (ORCPT ); Fri, 8 Sep 2006 18:48:44 -0400 Received: from gateway-1237.mvista.com ([63.81.120.158]:23084 "EHLO gateway-1237.mvista.com") by vger.kernel.org with ESMTP id S1751120AbWIHWsn (ORCPT ); Fri, 8 Sep 2006 18:48:43 -0400 Message-ID: <4501F348.7000208@mvista.com> Date: Fri, 08 Sep 2006 15:48:40 -0700 From: Kevin Hilman User-Agent: Thunderbird 1.5.0.5 (X11/20060728) MIME-Version: 1.0 To: Arjan van de Ven Cc: Ingo Molnar , Thomas Gleixner , linux-kernel@vger.kernel.org Subject: Re: [PATCH -rt] use SA_NODELAY for XScale PMU interrupts References: <4501C2FE.40109@mvista.com> <1157750869.30730.137.camel@laptopd505.fenrus.org> In-Reply-To: <1157750869.30730.137.camel@laptopd505.fenrus.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 906 Lines: 25 Arjan van de Ven wrote: > On Fri, 2006-09-08 at 12:22 -0700, Kevin Hilman wrote: >> In the XScale oprofile support, the performance monitoring unit (PMU) >> triggers interrupts and the ISR reads out the performance data. These >> ISRs are currently set to SA_INTERRUPT. In order to get accurate >> performance and profiling data under PREEMPT_RT, these should use >> SA_NODELAY. The functions called by this ISR are limited to >> drivers/oprofile functions. >> >> Patch against 2.6.18-rt8 > > hmm I thought the SA_ flags were deprecated ??? > Sorry, although I said 2.6.18-rt8, the patch is against 2.6.17-rt8, where the SA_ flags are still used. Kevin - 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/