Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752424AbYKGVsW (ORCPT ); Fri, 7 Nov 2008 16:48:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751160AbYKGVsN (ORCPT ); Fri, 7 Nov 2008 16:48:13 -0500 Received: from bombadil.infradead.org ([18.85.46.34]:56150 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751171AbYKGVsN (ORCPT ); Fri, 7 Nov 2008 16:48:13 -0500 Subject: Re: 2.6.26.6-rt11: BUGs (sleeping function called from invalid context) From: Peter Zijlstra To: Fernando Lopez-Lezcano Cc: Steven Rostedt , LKML , Ingo Molnar In-Reply-To: <1226093710.20569.23.camel@localhost.localdomain> References: <1226083858.20569.14.camel@localhost.localdomain> <1226085407.31966.58.camel@lappy.programming.kicks-ass.net> <1226093710.20569.23.camel@localhost.localdomain> Content-Type: text/plain Date: Fri, 07 Nov 2008 22:47:51 +0100 Message-Id: <1226094472.31966.93.camel@lappy.programming.kicks-ass.net> Mime-Version: 1.0 X-Mailer: Evolution 2.22.3.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1200 Lines: 33 On Fri, 2008-11-07 at 13:35 -0800, Fernando Lopez-Lezcano wrote: > On Fri, 2008-11-07 at 20:16 +0100, Peter Zijlstra wrote: > > On Fri, 2008-11-07 at 14:01 -0500, Steven Rostedt wrote: > > > Peter, I think we've seen this before. It is the highmem code sleeping. > > > > I've been working on an alternative kmap_atomic implementation for -rt, > > the below has been build and booted but not stressed, anybody care to > > give it a spin ? > > I'll give it a try. Anything in particular I should try to do? Or not > do? Or watch for? Lots of I/O should stress the i386 highmem stuff. If all is well it works, if not, crashes and splats. > -- Fernando > > > > --- > > arch/x86/mm/highmem_32.c | 130 ++++++++++++++++++++++++++++++++++++++++++--- > > include/asm-x86/highmem.h | 11 ---- > > include/linux/sched.h | 5 ++ > > kernel/sched.c | 10 ++++ > > 4 files changed, 137 insertions(+), 19 deletions(-) > > [MUNCH] > > -- 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/