Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751029AbWIUIEE (ORCPT ); Thu, 21 Sep 2006 04:04:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751032AbWIUIEE (ORCPT ); Thu, 21 Sep 2006 04:04:04 -0400 Received: from rwcrmhc13.comcast.net ([204.127.192.83]:44983 "EHLO rwcrmhc13.comcast.net") by vger.kernel.org with ESMTP id S1751029AbWIUIEB (ORCPT ); Thu, 21 Sep 2006 04:04:01 -0400 Date: Thu, 21 Sep 2006 01:04:35 -0700 From: Deepak Saxena To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Daniel Walker , Thomas Gleixner , rmk@arm.linux.org.uk, Kevin Hilman , linux-arm-kernel@lists.arm.linux.org.uk Subject: Re: 2.6.18-rt1 Message-ID: <20060921080435.GA29636@plexity.net> Reply-To: dsaxena@plexity.net References: <20060920141907.GA30765@elte.hu> <1158774118.29177.13.camel@c-67-180-230-165.hsd1.ca.comcast.net> <20060920182553.GC1292@us.ibm.com> <200609201436.47042.gene.heskett@verizon.net> <20060920194650.GA21037@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060920194650.GA21037@elte.hu> Organization: Plexity Networks User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1688 Lines: 54 On Sep 20 2006, at 21:46, Ingo Molnar was caught saying: > > * Gene Heskett wrote: > > > That looks like the chorus of the song I saw when it crashed on boot, > > pretty darned close to identical. > > ok, i've uploaded -rt3: > > http://redhat.com/~mingo/realtime-preempt/ > > this should have this one fixed. I am seeing an intermittent lock up on the ARM Versatile board during the ALSA driver init that only shows up with (PREEMPT_RT & !HIGH_RES_TIMERS & ARM_EABI) enabled. If HRT is disabled and EABI is enabled, the kernel works every time, and same with !RT & !HRT & EABI. I get no oops, just a complete lock up with no console output. In summary: PREEMPT HRT EABI BOOTS ------------------------------------------ 2.6.18-rt3 ------------------------------------------ RT Y Y Y RT N Y Intermittent RT N N Y NONE Y Y Y NONE N Y Y NONE N N Y ------------------------------------------ 2.6.18-vanilla ------------------------------------------ N/A Y Y ------------------------------------------ I need to go pinpoint the exact point where it is locking up during the ALSA driver init (calls to udelay() seem suspect to me) and it is very possible that this is a toolchain issue but want to see if any other ARM folks are seeing issues with EABI & !HRT. ~Deepak -- Deepak Saxena - dsaxena@plexity.net - http://www.plexity.net "An open heart has no possessions, only experiences" - Matt Bibbeau - 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/