From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933634Ab1AMUGB (ORCPT ); Thu, 13 Jan 2011 15:06:01 -0500 Received: from caramon.arm.linux.org.uk ([78.32.30.218]:59190 "EHLO caramon.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933610Ab1AMUFn (ORCPT ); Thu, 13 Jan 2011 15:05:43 -0500 Date: Thu, 13 Jan 2011 20:05:26 +0000 From: Russell King To: "Paul E. McKenney" Cc: Linux Kernel List Subject: Re: INFO: task rcu_kthread:6 blocked for more than 120 seconds. Message-ID: <20110113200526.GA31380@flint.arm.linux.org.uk> References: <20110112174300.GA6504@flint.arm.linux.org.uk> <20110112222219.GA17328@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20110112222219.GA17328@linux.vnet.ibm.com> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jan 12, 2011 at 02:22:19PM -0800, Paul E. McKenney wrote: > Does the following patch help? Yes it does, thanks. Tested-by: Russell King > commit 70ce43253a4465211a9c51e33d56a417c759a718 > Author: Paul E. McKenney > Date: Wed Jan 12 14:18:11 2011 -0800 > > rcu: avoid pointless blocked-task warnings > > If the RCU callback-processing kthread has nothing to do, it parks in > a wait_event(). If RCU remains idle for more than two minutes, the > kernel complains about this. This commit changes from wait_event() > to wait_event_interruptible() to prevent the kernel from complaining > just because RCU is idle. > > Reported-by: Russell King Please add '+kernel' in there, thanks. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: