From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755012AbZLCIyF (ORCPT ); Thu, 3 Dec 2009 03:54:05 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754434AbZLCIyE (ORCPT ); Thu, 3 Dec 2009 03:54:04 -0500 Received: from cn.fujitsu.com ([222.73.24.84]:50914 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751581AbZLCIyD (ORCPT ); Thu, 3 Dec 2009 03:54:03 -0500 Message-ID: <4B177C79.1040407@cn.fujitsu.com> Date: Thu, 03 Dec 2009 16:53:13 +0800 From: Lai Jiangshan User-Agent: Thunderbird 2.0.0.6 (Windows/20070728) MIME-Version: 1.0 To: paulmck@linux.vnet.ibm.com CC: linux-kernel@vger.kernel.org, mingo@elte.hu, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@polymtl.ca, josh@joshtriplett.org, dvhltc@us.ibm.com, niv@us.ibm.com, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, Valdis.Kletnieks@vt.edu, dhowells@redhat.com Subject: Re: [PATCH tip/core/rcu 0/4] rcu: preemptible expedited grace periods and cleanups References: <20091202200955.GA12950@linux.vnet.ibm.com> In-Reply-To: <20091202200955.GA12950@linux.vnet.ibm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Paul E. McKenney wrote: > This patchset includes some cleanups, improved diagnostics, and an > implementation of expedited preemptible RCU grace periods that is > actually expedited: > > 1. Rename the "quiet" functions. The name rcu_quiet_cpu() was > clear enough, but now that we have four flavors of quietness > with more on the way, we need more meaningful names. > > 2. Enable a fourth level of the rcu_node hierarchy. No, we really > don't need the ability to run on million-CPU SMP systems at the > moment, but the additional level allows more vigorous > stress-testing on 16-CPU systems. > > 3. Add an implementation of synchronize_rcu_expedited() that > actually expedites preemptible-RCU grace periods. > > 4. Make RCU_CPU_STALL_DETECTOR be on by default. If this works > well, the #ifdefs will eventually be removed to reduce testing > load. > > This patchset is intended for 2.6.34, but has passed sufficient testing > that it could safely be included in 2.6.33, if desired. > Ack for the whole patchset except [PATCH 3/4] Acked-by: Lai Jiangshan