From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757784AbXHEP1F (ORCPT ); Sun, 5 Aug 2007 11:27:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752447AbXHEP0z (ORCPT ); Sun, 5 Aug 2007 11:26:55 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:35691 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752334AbXHEP0y (ORCPT ); Sun, 5 Aug 2007 11:26:54 -0400 Date: Sun, 5 Aug 2007 17:26:27 +0200 From: Ingo Molnar To: Steven Rostedt Cc: "Paul E. McKenney" , Thomas Gleixner , RT , LKML Subject: Re: [BUG RT] - rcupreempt.c:133 on 2.6.23-rc1-rt7 Message-ID: <20070805152627.GA14029@elte.hu> References: <1186289484.636.5.camel@localhost.localdomain> <1186290332.636.8.camel@localhost.localdomain> <20070805065948.GB515@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.14 (2007-02-12) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.1.7-deb -1.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Steven Rostedt wrote: > The code on line 133 is: > > WARN_ON_ONCE(current->rcu_read_lock_nesting > NR_CPUS); > > I have NR_CPUS set to 2 since the box I'm running this on only has 2 > cpus and I see no reason to waste more data structures. > > Is rcu read lock nesting deeper than 2? ah, silly me - that should indeed be something fixed like 128. Ingo