From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754842AbXGHEhh (ORCPT ); Sun, 8 Jul 2007 00:37:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750888AbXGHEhb (ORCPT ); Sun, 8 Jul 2007 00:37:31 -0400 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:38122 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1750814AbXGHEha (ORCPT ); Sun, 8 Jul 2007 00:37:30 -0400 Date: Sat, 07 Jul 2007 21:37:52 -0700 (PDT) Message-Id: <20070707.213752.63129539.davem@davemloft.net> To: clameter@sgi.com Cc: linux-kernel@vger.kernel.org, linux-mm@vger.kernel.org, suresh.b.siddha@intel.com, corey.d.gough@intel.com, penberg@cs.helsinki.fi, akpm@linux-foundation.org Subject: Re: [patch 00/10] [RFC] SLUB patches for more functionality, performance and maintenance From: David Miller In-Reply-To: <20070708034952.022985379@sgi.com> References: <20070708034952.022985379@sgi.com> X-Mailer: Mew version 5.1.52 on Emacs 21.4 / Mule 5.0 (SAKAKI) 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 From: Christoph Lameter Date: Sat, 07 Jul 2007 20:49:52 -0700 > A cmpxchg is less costly than interrupt enabe/disable This is cpu dependant, and in fact not true at all on Niagara and several of the cpus in the UltraSPARC family.