From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755368AbZKVQxP (ORCPT ); Sun, 22 Nov 2009 11:53:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755312AbZKVQxO (ORCPT ); Sun, 22 Nov 2009 11:53:14 -0500 Received: from e8.ny.us.ibm.com ([32.97.182.138]:47913 "EHLO e8.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755160AbZKVQxN (ORCPT ); Sun, 22 Nov 2009 11:53:13 -0500 Date: Sun, 22 Nov 2009 08:53:21 -0800 From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org Cc: mingo@elte.hu, laijs@cn.fujitsu.com, 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: [PATCH tip/core/rcu 0/3] rcu: resend of grace-period stall and cleanup patches Message-ID: <20091122165321.GA19922@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.15+20070412 (2007-04-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! This patch series is a resend of the three RCU patches that are candidates for the upcoming 2.6.33 merge window, but that are not yet in -tip. These are: 1. A fix for a grace-period-stall bug that occurs on large machines. This was partially fixed by commit 237c80c5, and this patch completes the fix using a much cleaner method. 237c80c5 would request another quiescent state for a CPU that just went offline and that might have already gone through a quiescent state for the current grace period. In contrast, this patch pushes the quiescent-state reporting up the rcu_node tree straightaway. 2. A cleanup removing function wrapping that has been unnecessary since commit e74f4c45 caused CPUs going offline to give up their own callbacks. 3. A cleanup that gets rid of a few annoying #ifdefs by moving the code from kernel/rcupdate.c and include/linux/rcupdate.h to include/linux/rcutiny.h, include/linux/rcutree.h, and kernel/rcutree.c. Thanx, Paul