Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756639AbXI0N5Q (ORCPT ); Thu, 27 Sep 2007 09:57:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754991AbXI0N5E (ORCPT ); Thu, 27 Sep 2007 09:57:04 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:60296 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755542AbXI0N5D (ORCPT ); Thu, 27 Sep 2007 09:57:03 -0400 Date: Thu, 27 Sep 2007 06:56:11 -0700 From: Arjan van de Ven To: Alexey Dobriyan Cc: akpm@osdl.org, linux-kernel@vger.kernel.org, devel@openvz.org Subject: Re: [PATCH -mm] task_struct: move ->fpu_counter and ->oomkilladj Message-ID: <20070927065611.45c479fb@laptopd505.fenrus.org> In-Reply-To: <20070927095557.GA6758@localhost.sw.ru> References: <20070927095557.GA6758@localhost.sw.ru> Organization: Intel X-Mailer: Claws Mail 3.0.1 (GTK+ 2.12.0; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 659 Lines: 18 On Thu, 27 Sep 2007 13:55:57 +0400 Alexey Dobriyan wrote: > There is nice 2 byte hole after struct task_struct::ioprio field > into which we can put two 1-byte fields: ->fpu_counter and > ->oomkilladj. > > [cc'ing Arjan just in case ->fpu_counter placement wasn't completely > random :^)] fpu_counter was more or less random, but it does get written to frequently (making the cacheline dirty) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/