From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762645AbXH0QWY (ORCPT ); Mon, 27 Aug 2007 12:22:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761759AbXH0QSH (ORCPT ); Mon, 27 Aug 2007 12:18:07 -0400 Received: from smtp2.linux-foundation.org ([207.189.120.14]:35592 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761732AbXH0QSE (ORCPT ); Mon, 27 Aug 2007 12:18:04 -0400 Date: Mon, 27 Aug 2007 09:17:26 -0700 From: Andrew Morton To: Mathieu Desnoyers Cc: linux-kernel@vger.kernel.org Subject: Re: [patch 00/28] Add cmpxchg64_local and cmpxchg_local to each architecture Message-Id: <20070827091726.a2e8fbb8.akpm@linux-foundation.org> In-Reply-To: <20070827155234.062715780@polymtl.ca> References: <20070827155234.062715780@polymtl.ca> X-Mailer: Sylpheed 2.4.1 (GTK+ 2.8.17; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 27 Aug 2007 11:52:34 -0400 Mathieu Desnoyers wrote: > Here is the patch series for 2.6.23-rc3-mm1 that adds cmpxchg_local, and now > also cmpxchg64_local, to each architecture. How well tested are these on the various architectures? > When the architecture supports it, it also defines cmpxchg64, but is is not > defined for architecture that does not support atomic 64 bits updates. > > Following performance testing of the slub allocator with cmpxchg_local, these > patches should prove themselves useful in a near future. It would be useful if we could have (numerical) details on these benefits as part of this patch series description, please. Also, it would be good to get the slub patch in there at the same time so that the new code gets a bit of exercise. Thanks.