From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758177AbXKABNp (ORCPT ); Wed, 31 Oct 2007 21:13:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753082AbXKABNg (ORCPT ); Wed, 31 Oct 2007 21:13:36 -0400 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:56389 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752153AbXKABNf (ORCPT ); Wed, 31 Oct 2007 21:13:35 -0400 Date: Wed, 31 Oct 2007 18:13:35 -0700 (PDT) Message-Id: <20071031.181335.207429553.davem@davemloft.net> To: clameter@sgi.com Cc: akpm@linux-foundation.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, mathieu.desnoyers@polymtl.ca, penberg@cs.helsinki.fi Subject: Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce per cpu access overhead From: David Miller In-Reply-To: References: <20071031.180906.155917087.davem@davemloft.net> X-Mailer: Mew version 5.2 on Emacs 22.1 / 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: Wed, 31 Oct 2007 18:12:11 -0700 (PDT) > On Wed, 31 Oct 2007, David Miller wrote: > > > All I can do now is bisect and then try to figure out what about the > > guilty change might cause the problem. > > Reverting the 7th patch should avoid using the sparc register that caches > the per cpu area offset? (I though so, does it?) Yes, that's right, %g5 holds the local cpu's per-cpu offset.