From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753401AbaF3UY2 (ORCPT ); Mon, 30 Jun 2014 16:24:28 -0400 Received: from e35.co.us.ibm.com ([32.97.110.153]:57388 "EHLO e35.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750840AbaF3UY1 (ORCPT ); Mon, 30 Jun 2014 16:24:27 -0400 Date: Mon, 30 Jun 2014 13:24:21 -0700 From: "Paul E. McKenney" To: Oleg Nesterov Cc: Josh Triplett , Lai Jiangshan , Peter Zijlstra , linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 0/2] rcu: uninline rcu_lock_acquire() and rcu_lock_release() Message-ID: <20140630202420.GG4603@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com References: <20140630161837.GA15873@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140630161837.GA15873@redhat.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14063020-6688-0000-0000-000002F4833E Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jun 30, 2014 at 06:18:37PM +0200, Oleg Nesterov wrote: > Hello, > > May be correct this time ;) Based on paulmck/linux-rcu.git rcu/next. > > 2/2 is new and hopefully trivial. But! the numbers look suspiciously > good, I do not understand where does the difference come from... Probably from rcu_dereference_raw() and rcu_dereference_check(..., 1). ;-) Queued and kicked off testing, both mine and (indirectly) Fengguang's. Thanx, Paul