From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964851Ab2J3QlT (ORCPT ); Tue, 30 Oct 2012 12:41:19 -0400 Received: from e37.co.us.ibm.com ([32.97.110.158]:39008 "EHLO e37.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759704Ab2J3Qji (ORCPT ); Tue, 30 Oct 2012 12:39:38 -0400 Date: Tue, 30 Oct 2012 09:27:28 -0700 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@efficios.com, josh@joshtriplett.org, niv@us.ibm.com, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, Valdis.Kletnieks@vt.edu, dhowells@redhat.com, edumazet@google.com, darren@dvhart.com, fweisbec@gmail.com, sbw@mit.edu, patches@linaro.org, oleg@redhat.com Subject: [PATCH tip/core/rcu 0/6] Fixes for 3.8 Message-ID: <20121030162728.GA22648@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/1.5.21 (2010-09-15) X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12103016-7408-0000-0000-000009C554E8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! This patch contains fixes as follows: 1. Reinstate a grace-period acceleration that permits invoking the first callback registered on an idle system in one grace period rather than two. The previous version of this acceleration was invalidated by the new grace-period kthreads. 2. Fix an integer-size mismatch that prevented RCU from shifting to bulk-callback-invocation mode under overload. (Courtesy of Eric Dumazet.) 3. Remove list_for_each_continue_rcu(), as it is no longer used. 4. Update rcutorture's module-parameter printout to include new parameters. 5. Document the memory-ordering properties of RCU's grace-period primitives. Note that the SRCU rewrite weakened these properties slightly. 6. Reduce the RCU CPU stall warning timeout to 21 seconds so that it is once again somewhat shorter than the soft-lockup timeout. Thanx, Paul b/Documentation/RCU/checklist.txt | 17 +++++------ b/Documentation/RCU/whatisRCU.txt | 4 -- b/include/linux/rculist.h | 17 ----------- b/include/linux/rcupdate.h | 20 +++++++++++++ b/kernel/rcutorture.c | 4 ++ b/kernel/rcutree.c | 57 ++++++++++++++++++++++++++++++++------ b/kernel/rcutree_plugin.h | 8 +++++ b/lib/Kconfig.debug | 2 - 8 files changed, 90 insertions(+), 39 deletions(-)