From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757493Ab0DGSZO (ORCPT ); Wed, 7 Apr 2010 14:25:14 -0400 Received: from courier.cs.helsinki.fi ([128.214.9.1]:53890 "EHLO mail.cs.helsinki.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753474Ab0DGSZM (ORCPT ); Wed, 7 Apr 2010 14:25:12 -0400 Message-ID: <4BBCCE03.5050104@cs.helsinki.fi> Date: Wed, 07 Apr 2010 21:25:07 +0300 From: Pekka Enberg User-Agent: Thunderbird 2.0.0.24 (Macintosh/20100228) MIME-Version: 1.0 To: Christoph Lameter CC: "Zhang, Yanmin" , Eric Dumazet , netdev , Tejun Heo , alex.shi@intel.com, "linux-kernel@vger.kernel.org" , "Ma, Ling" , "Chen, Tim C" , Andrew Morton Subject: Re: hackbench regression due to commit 9dfc6e68bfe6e References: <1269506457.4513.141.camel@alexs-hp.sh.intel.com> <1269570902.9614.92.camel@alexs-hp.sh.intel.com> <1270114166.2078.107.camel@ymzhang.sh.intel.com> <1270195589.2078.116.camel@ymzhang.sh.intel.com> <4BBA8DF9.8010409@kernel.org> <1270542497.2078.123.camel@ymzhang.sh.intel.com> <1270591841.2091.170.camel@edumazet-laptop> <1270607668.2078.259.camel@ymzhang.sh.intel.com> <4BBCB7B7.4040901@cs.helsinki.fi> <4BBCB868.2000705@cs.helsinki.fi> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Christoph Lameter wrote: > On Wed, 7 Apr 2010, Pekka Enberg wrote: > >> Oh, sorry, I think it's actually '____cacheline_aligned_in_smp' (with four >> underscores) for per-cpu data. Confusing... > > This does not particulary help to clarify the situation since we are > dealing with data that can either be allocated via the percpu allocator or > be statically present (kmalloc bootstrap situation). Yes, I am an idiot. :-) From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pekka Enberg Subject: Re: hackbench regression due to commit 9dfc6e68bfe6e Date: Wed, 07 Apr 2010 21:25:07 +0300 Message-ID: <4BBCCE03.5050104@cs.helsinki.fi> References: <1269506457.4513.141.camel@alexs-hp.sh.intel.com> <1269570902.9614.92.camel@alexs-hp.sh.intel.com> <1270114166.2078.107.camel@ymzhang.sh.intel.com> <1270195589.2078.116.camel@ymzhang.sh.intel.com> <4BBA8DF9.8010409@kernel.org> <1270542497.2078.123.camel@ymzhang.sh.intel.com> <1270591841.2091.170.camel@edumazet-laptop> <1270607668.2078.259.camel@ymzhang.sh.intel.com> <4BBCB7B7.4040901@cs.helsinki.fi> <4BBCB868 .2000705@cs.helsinki.fi> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: "Zhang, Yanmin" , Eric Dumazet , netdev , Tejun Heo , alex.shi@intel.com, "linux-kernel@vger.kernel.org" , "Ma, Ling" , "Chen, Tim C" , Andrew Morton To: Christoph Lameter Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Christoph Lameter wrote: > On Wed, 7 Apr 2010, Pekka Enberg wrote: > >> Oh, sorry, I think it's actually '____cacheline_aligned_in_smp' (with four >> underscores) for per-cpu data. Confusing... > > This does not particulary help to clarify the situation since we are > dealing with data that can either be allocated via the percpu allocator or > be statically present (kmalloc bootstrap situation). Yes, I am an idiot. :-)