From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755285Ab1HKKVv (ORCPT ); Thu, 11 Aug 2011 06:21:51 -0400 Received: from metis.ext.pengutronix.de ([92.198.50.35]:60894 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754853Ab1HKKVu (ORCPT ); Thu, 11 Aug 2011 06:21:50 -0400 Date: Thu, 11 Aug 2011 12:21:39 +0200 From: Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= To: Tim Sander Cc: Peter Zijlstra , linux-kernel , Thomas Gleixner , "Paul E. McKenney" , linux-rt-users Subject: Re: [ANNOUNCE] 3.0-rt7 - Error with low latency desktop config Message-ID: <20110811102138.GC11398@pengutronix.de> References: <1312465990.16729.22.camel@twins> <201108091707.49832.tim.sander@hbm.com> <20110809173310.GB11398@pengutronix.de> <201108101833.54661.tim.sander@hbm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <201108101833.54661.tim.sander@hbm.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-SA-Exim-Connect-IP: 2001:6f8:1178:2:215:17ff:fe12:23b0 X-SA-Exim-Mail-From: ukl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Aug 10, 2011 at 06:33:54PM +0200, Tim Sander wrote: > Hi Uwe > > I triple checked. > > I think targetinstall should ask about the changed config items. > It only asks one way, when going from an upatched kernel to an patched one. > Since i was coming from an preempt rt kernel to an unpatched one no questions > where asked (probably since all settings where still in place as i wasn't > using the preempt rt feature with the preempt rt patched kernel source > aka "Low latency desktop") I guess that when the kernel build updates .config your ${PROJECT_DIR}/config/${PLATFORMNAME}/kernelconfig isn't adapted accordingly. So yes, it might be out of sync. So better provide ${PROJECT_DIR}/${PLATFORMNAME}/build/linux-3.0/.config please. > But i think the regression when going from 3.0-rt7 to 3.0.1-rt8 with > CONFIG_PREEMPT_RTB is more worthwhile to discuss. Which i detailed in the > other mail. You didn't talk about CONFIG_PREEMPT_RTB before, did you? I just used it as indicator that the .config you sent isn't for an -rt kernel. Your machine is based on Phytec's pcm043? I could try to test on one of those an unpatched -rt kernel, but I don't promise to come around to do it. Best regards Uwe -- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | http://www.pengutronix.de/ | From mboxrd@z Thu Jan 1 00:00:00 1970 From: Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= Subject: Re: [ANNOUNCE] 3.0-rt7 - Error with low latency desktop config Date: Thu, 11 Aug 2011 12:21:39 +0200 Message-ID: <20110811102138.GC11398@pengutronix.de> References: <1312465990.16729.22.camel@twins> <201108091707.49832.tim.sander@hbm.com> <20110809173310.GB11398@pengutronix.de> <201108101833.54661.tim.sander@hbm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Peter Zijlstra , linux-kernel , Thomas Gleixner , "Paul E. McKenney" , linux-rt-users To: Tim Sander Return-path: Received: from metis.ext.pengutronix.de ([92.198.50.35]:60895 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755265Ab1HKKVv (ORCPT ); Thu, 11 Aug 2011 06:21:51 -0400 Content-Disposition: inline In-Reply-To: <201108101833.54661.tim.sander@hbm.com> Sender: linux-rt-users-owner@vger.kernel.org List-ID: On Wed, Aug 10, 2011 at 06:33:54PM +0200, Tim Sander wrote: > Hi Uwe >=20 > I triple checked. > > I think targetinstall should ask about the changed config items. > It only asks one way, when going from an upatched kernel to an patche= d one. > Since i was coming from an preempt rt kernel to an unpatched one no q= uestions > where asked (probably since all settings where still in place as i wa= sn't=20 > using the preempt rt feature with the preempt rt patched kernel sourc= e > aka "Low latency desktop") I guess that when the kernel build updates .config your ${PROJECT_DIR}/config/${PLATFORMNAME}/kernelconfig isn't adapted accordingly. So yes, it might be out of sync. So better provide ${PROJECT_DIR}/${PLATFORMNAME}/build/linux-3.0/.config please. =20 > But i think the regression when going from 3.0-rt7 to 3.0.1-rt8 with=20 > CONFIG_PREEMPT_RTB is more worthwhile to discuss. Which i detailed in= the=20 > other mail. You didn't talk about CONFIG_PREEMPT_RTB before, did you? I just used i= t as indicator that the .config you sent isn't for an -rt kernel. Your machine is based on Phytec's pcm043? I could try to test on one of those an unpatched -rt kernel, but I don't promise to come around to do= it. Best regards Uwe --=20 Pengutronix e.K. | Uwe Kleine-K=F6nig = | Industrial Linux Solutions | http://www.pengutronix.de/= | -- To unsubscribe from this list: send the line "unsubscribe linux-rt-user= s" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html