Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753703Ab0FNPfi (ORCPT ); Mon, 14 Jun 2010 11:35:38 -0400 Received: from e6.ny.us.ibm.com ([32.97.182.146]:46917 "EHLO e6.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752754Ab0FNPfh (ORCPT ); Mon, 14 Jun 2010 11:35:37 -0400 Subject: Re: [ANNOUNCE] 2.6.33.5-rt23 From: Will Schmidt Reply-To: will_schmidt@vnet.ibm.com To: Thomas Gleixner Cc: LKML , rt-users , John Stultz , Nick Piggin In-Reply-To: References: <1276119074.15867.311.camel@lexx> <1276185406.15867.390.camel@lexx> Content-Type: text/plain; charset="UTF-8" Organization: IBM Date: Mon, 14 Jun 2010 10:35:24 -0500 Message-ID: <1276529724.15867.425.camel@lexx> Mime-Version: 1.0 X-Mailer: Evolution 2.28.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1826 Lines: 57 On Mon, 2010-06-14 at 15:34 +0200, Thomas Gleixner wrote: > On Thu, 10 Jun 2010, Will Schmidt wrote: > > > On Thu, 2010-06-10 at 08:07 +0200, Thomas Gleixner wrote: > > > On Wed, 9 Jun 2010, Will Schmidt wrote: > > > > > > > On Wed, 2010-06-09 at 18:44 +0200, Thomas Gleixner wrote: > > > > I'm still on 2.6.33.5-rt22 on powerpc, and have run into a couple > > > > "sleeping function called from invalid context..." BUGs. The first was > > > > during system boot, second during a 'make'. > > > > > > > > relevant code paths don't seem to have changed between -rt22 and -rt23, > > > > so I think still valid.. :-) > > > > > > > > This is on a POWER7 system, which may have opened up some timing > > > > windows, wrt previous runs on POWER6 systems. > > > > > > > > > > > > BUG: sleeping function called from invalid context at > > > > kernel/rtmutex.c:684 > > > > > > > [c000000078cf2cf0] [c000000000131a04] .irq_to_desc_alloc_node+0xdc/0x2b8 > > > > > > Grr. I thought I had the SPARSE_IRQ stuff disabled on -rt, but seems > > > it came back somehow. Can you disable that, or does you machine depend > > > on it ? > > > > I'm not sure whether it is required by the architecture. I do see that > > SPARSE_IRQ is disabled in arch/x86/Kconfig with a !PREEMPT_RT, but I > > don't see an equivalent 'disable' in arch/powerpc/Kconfig. > > Can you disable it ? Yeah. [root@foo ~]# zcat /proc/config.gz | grep SPARSE # CONFIG_SPARSE_IRQ is not set ... Thats a sample size of one (POWER7) system, but seems to have worked. Thanks, -Will > > Thanks, > > 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/