From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932177Ab1ALLSP (ORCPT ); Wed, 12 Jan 2011 06:18:15 -0500 Received: from canuck.infradead.org ([134.117.69.58]:54310 "EHLO canuck.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754054Ab1ALLSN convert rfc822-to-8bit (ORCPT ); Wed, 12 Jan 2011 06:18:13 -0500 Subject: Re: [PATCH -tip 1/2] [PATCH -tip 1/2] sched: Reinstate group names in /proc/sched_debug. From: Peter Zijlstra To: bharata@linux.vnet.ibm.com Cc: Yong Zhang , linux-kernel@vger.kernel.org, Mike Galbraith , Ingo Molnar In-Reply-To: <20110112074930.GF2723@in.ibm.com> References: <20110111101040.GD4772@in.ibm.com> <20110111101153.GE4772@in.ibm.com> <20110111124658.GA4507@zhy> <20110111134244.GJ4772@in.ibm.com> <20110111140005.GA6069@zhy> <20110112074930.GF2723@in.ibm.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Wed, 12 Jan 2011 12:18:32 +0100 Message-ID: <1294831112.19601.8.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2011-01-12 at 13:19 +0530, Bharata B Rao wrote: > > We could, but I guess its not a recommended practice anymore to depend on > spinlocks to protect rcu readside. Not only is it not recommended, its a flat out bug for PREEMPT_RCU.