From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751199AbWFVF57 (ORCPT ); Thu, 22 Jun 2006 01:57:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750885AbWFVF56 (ORCPT ); Thu, 22 Jun 2006 01:57:58 -0400 Received: from smtp.osdl.org ([65.172.181.4]:37854 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S1750817AbWFVF56 (ORCPT ); Thu, 22 Jun 2006 01:57:58 -0400 Date: Wed, 21 Jun 2006 22:57:52 -0700 From: Andrew Morton To: Dave Olson Cc: mingo@elte.hu, ccb@acm.org, linux-kernel@vger.kernel.org, nickpiggin@yahoo.com.au Subject: Re: [patch] increase spinlock-debug looping timeouts (write_lock and NMI) Message-Id: <20060621225752.93cfffb0.akpm@osdl.org> In-Reply-To: References: X-Mailer: Sylpheed version 2.2.4 (GTK+ 2.8.17; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 21 Jun 2006 22:45:49 -0700 (PDT) Dave Olson wrote: > On Tue, 20 Jun 2006, Andrew Morton wrote: > | > Intended to be more or less stock fc4 but with CONFIG_PCI_MSI=y and > | > 2.6.17-based patch so the 8131 MSI quirk isn't enabled. > | > > | > >From the config file: > | > CONFIG_DEBUG_SPINLOCK=y > | > CONFIG_DEBUG_SPINLOCK_SLEEP=y > | > | OK, I goofed again. > | > | It would be super-interesting to know whether CONFIG_DEBUG_SPINLOCK=n > | improves things. > > It does. No stalls, hangs, or nmi's in several hours of running the > test that previously failed on almost every run (with long stalls, system > hangs, or NMI watchdogs), on the same hardware. > > I made no other changes to the kernel config than turning both of > the above off. > Well isn't that interesting, thanks. We have our 2.6.17.x patch. Now we need to work out why.