From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755835Ab3AEREZ (ORCPT ); Sat, 5 Jan 2013 12:04:25 -0500 Received: from e39.co.us.ibm.com ([32.97.110.160]:33007 "EHLO e39.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755768Ab3AEREW (ORCPT ); Sat, 5 Jan 2013 12:04:22 -0500 Date: Sat, 5 Jan 2013 09:03:56 -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@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 Subject: [PATCH tip/core/rcu 0/3] Documentation and rcutorture changes for 3.9 Message-ID: <20130105170356.GA13534@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: 13010517-3620-0000-0000-000000D1823F Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! The following are changes to documentation and rcutorture: 1. Export trace_clock_local() in order to allow rcutorture event tracing to emit the time of the beginning of the RCU read-side critical section at the point where a failure is detected. 2. Reduce rcutorture's read-side tracing to include only failures, thus cutting the number of events down to something reasonable (normally zero, in fact!). 3. Add atomic_xchg() to the list of atomic operations and memory barriers, courtesy of Richard Braun. Thanx, Paul Documentation/atomic_ops.txt | 2 ++ Documentation/memory-barriers.txt | 1 + include/linux/rcupdate.h | 13 ++++++++++--- include/trace/events/rcu.h | 19 ++++++++++++++----- kernel/rcupdate.c | 9 ++++++--- kernel/rcutorture.c | 31 ++++++++++++++++++++++++------- kernel/trace/trace_clock.c | 1 + 7 files changed, 58 insertions(+), 18 deletions(-)