From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753081AbaBQVkP (ORCPT ); Mon, 17 Feb 2014 16:40:15 -0500 Received: from e37.co.us.ibm.com ([32.97.110.158]:59295 "EHLO e37.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751137AbaBQVkN (ORCPT ); Mon, 17 Feb 2014 16:40:13 -0500 Date: Mon, 17 Feb 2014 13:40:07 -0800 From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org Cc: mingo@kernel.org, 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, dhowells@redhat.com, edumazet@google.com, darren@dvhart.com, fweisbec@gmail.com, oleg@redhat.com, sbw@mit.edu Subject: [PATCH tip/core/rcu 0/3] Response-time changes for 3.15 Message-ID: <20140217214007.GA6609@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-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14021721-7164-0000-0000-000006267BEE Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! This series contains minor response-time improvements. 1. Create trivial always-true version of rcu_is_nocb_cpu() for CONFIG_RCU_NOCB_CPU_ALL=y kernels. 2. Create trivial always-false version of rcu_needs_cpu() for CONFIG_RCU_NOCB_CPU_ALL=y kernels. 3. Don't bother doing CONFIG_RCU_FAST_NO_HZ work at idle entry and exit time for CONFIG_RCU_NOCB_CPU_ALL=y kernels. Thanx, Paul ------------------------------------------------------------------------ b/include/linux/rcupdate.h | 4 ++++ b/include/linux/rcutiny.h | 6 ------ b/include/linux/rcutree.h | 2 ++ b/kernel/rcu/tree.c | 2 +- b/kernel/rcu/tree_plugin.h | 2 ++ include/linux/rcupdate.h | 9 +++++++++ kernel/rcu/tree_plugin.h | 11 +++++++++-- 7 files changed, 27 insertions(+), 9 deletions(-)