From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758505AbZKJW2T (ORCPT ); Tue, 10 Nov 2009 17:28:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758483AbZKJW2R (ORCPT ); Tue, 10 Nov 2009 17:28:17 -0500 Received: from hera.kernel.org ([140.211.167.34]:34928 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758481AbZKJW2M (ORCPT ); Tue, 10 Nov 2009 17:28:12 -0500 Date: Tue, 10 Nov 2009 22:27:58 GMT From: "tip-bot for Paul E. McKenney" Cc: linux-kernel@vger.kernel.org, paulmck@linux.vnet.ibm.com, hpa@zytor.com, mingo@redhat.com, tglx@linutronix.de, mingo@elte.hu Reply-To: mingo@redhat.com, hpa@zytor.com, paulmck@linux.vnet.ibm.com, linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@elte.hu In-Reply-To: <1257889042435-git-send-email-> References: <1257889042435-git-send-email-> To: linux-tip-commits@vger.kernel.org Subject: [tip:core/rcu] rcu: Enable synchronize_sched_expedited() fastpath Message-ID: Git-Commit-ID: 956539b75921f561c0956c22d37320780e8b4ba1 X-Mailer: tip-git-log-daemon MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 956539b75921f561c0956c22d37320780e8b4ba1 Gitweb: http://git.kernel.org/tip/956539b75921f561c0956c22d37320780e8b4ba1 Author: Paul E. McKenney AuthorDate: Tue, 10 Nov 2009 13:37:20 -0800 Committer: Ingo Molnar CommitDate: Tue, 10 Nov 2009 22:48:49 +0100 rcu: Enable synchronize_sched_expedited() fastpath This patch adds a counter increment to enable tasks to actually take the synchronize_sched_expedited() function's fastpath. Signed-off-by: Paul E. McKenney Cc: laijs@cn.fujitsu.com Cc: dipankar@in.ibm.com Cc: mathieu.desnoyers@polymtl.ca Cc: josh@joshtriplett.org Cc: dvhltc@us.ibm.com Cc: niv@us.ibm.com Cc: peterz@infradead.org Cc: rostedt@goodmis.org Cc: Valdis.Kletnieks@vt.edu Cc: dhowells@redhat.com LKML-Reference: <1257889042435-git-send-email-> Signed-off-by: Ingo Molnar --- kernel/sched.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/kernel/sched.c b/kernel/sched.c index 76c0e96..e69fee4 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -10865,6 +10865,7 @@ void synchronize_sched_expedited(void) spin_unlock_irqrestore(&rq->lock, flags); } rcu_expedited_state = RCU_EXPEDITED_STATE_IDLE; + synchronize_sched_expedited_count++; mutex_unlock(&rcu_sched_expedited_mutex); put_online_cpus(); if (need_full_sync)