From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760272AbXHWJwT (ORCPT ); Thu, 23 Aug 2007 05:52:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757221AbXHWJwK (ORCPT ); Thu, 23 Aug 2007 05:52:10 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:43043 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757795AbXHWJwJ (ORCPT ); Thu, 23 Aug 2007 05:52:09 -0400 Subject: Re: [patch 0/6] Per cpu structures for SLUB From: Peter Zijlstra To: Christoph Lameter Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org In-Reply-To: <20070823064653.081843729@sgi.com> References: <20070823064653.081843729@sgi.com> Content-Type: text/plain Date: Thu, 23 Aug 2007 11:52:04 +0200 Message-Id: <1187862724.6114.356.camel@twins> Mime-Version: 1.0 X-Mailer: Evolution 2.10.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, while I like this patch set I'm at odds with the interaction of this and making the alloc/free fast paths lockless. The main race is s->cpu_slab[] and c->freelist. How does one close that gap? (btw, have you looked at my -rt slub patch?)