From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755273Ab0KZPop (ORCPT ); Fri, 26 Nov 2010 10:44:45 -0500 Received: from hera.kernel.org ([140.211.167.34]:55536 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753648Ab0KZPoo (ORCPT ); Fri, 26 Nov 2010 10:44:44 -0500 Message-ID: <4CEFD5AF.9060401@kernel.org> Date: Fri, 26 Nov 2010 16:43:43 +0100 From: Tejun Heo User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.2.12) Gecko/20101027 Lightning/1.0b2 Thunderbird/3.1.6 MIME-Version: 1.0 To: Christoph Lameter CC: akpm@linux-foundation.org, Pekka Enberg , linux-kernel@vger.kernel.org, Eric Dumazet , Mathieu Desnoyers Subject: Re: [thiscpuops upgrade 01/10] percpucounter: Optimize __percpu_counter_add a bit through the use of this_cpu() options. References: <20101123235139.908255844@linux.com> <20101123235156.482244613@linux.com> In-Reply-To: <20101123235156.482244613@linux.com> X-Enigmail-Version: 1.1.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (hera.kernel.org [127.0.0.1]); Fri, 26 Nov 2010 15:43:46 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/24/2010 12:51 AM, Christoph Lameter wrote: > The this_cpu_* options can be used to optimize __percpu_counter_add a bit. Avoids > some address arithmetic and saves 12 bytes. ... > Signed-off-by: Christoph Lameter Reviewed-by: Tejun Heo -- tejun