Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754888AbZIMQOp (ORCPT ); Sun, 13 Sep 2009 12:14:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754031AbZIMQOl (ORCPT ); Sun, 13 Sep 2009 12:14:41 -0400 Received: from e7.ny.us.ibm.com ([32.97.182.137]:37470 "EHLO e7.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753220AbZIMQOk (ORCPT ); Sun, 13 Sep 2009 12:14:40 -0400 Date: Sun, 13 Sep 2009 09:14:38 -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@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 Subject: [PATCH tip/core/rcu 0/4] Review comments, cleanups, and preemptable synchronize_rcu() fixes Message-ID: <20090913161438.GA32550@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 Content-Length: 709 Lines: 18 This patchset provides updates to TREE_PREEMPT_RCU as follows: 1. Update the TREE_PREEMPT_RCU description to note that it is suitable for small machines. 2. Add some WARN_ON_ONCE() calls to check for (incorrect) concurrent grace-period initialization. 3. Simplify quiescent-state detection (which also speeds up TREE_PREEMPT_RCU grace periods slightly). 4. Fix a thinko in TREE_PREEMPT_RCU's synchronize_rcu() that could result in premature grace periods. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/