Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 11 Feb 2002 20:53:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 11 Feb 2002 20:53:30 -0500 Received: from deimos.hpl.hp.com ([192.6.19.190]:2018 "EHLO deimos.hpl.hp.com") by vger.kernel.org with ESMTP id ; Mon, 11 Feb 2002 20:53:15 -0500 From: David Mosberger MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15464.30088.754007.311391@napali.hpl.hp.com> Date: Mon, 11 Feb 2002 17:53:12 -0800 To: "David S. Miller" Cc: anton@samba.org, linux-kernel@vger.kernel.org, zippel@linux-m68k.org Subject: Re: thread_info implementation In-Reply-To: <20020211.174102.28786938.davem@redhat.com> In-Reply-To: <15464.28196.894340.327685@napali.hpl.hp.com> <20020211.173236.08323394.davem@redhat.com> <15464.29104.798819.399971@napali.hpl.hp.com> <20020211.174102.28786938.davem@redhat.com> X-Mailer: VM 7.00 under Emacs 21.1.1 Reply-To: davidm@hpl.hp.com X-URL: http://www.hpl.hp.com/personal/David_Mosberger/ Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >>>>> On Mon, 11 Feb 2002 17:41:02 -0800 (PST), "David S. Miller" said: David> From: David Mosberger Date: Mon, 11 David> Feb 2002 17:36:48 -0800 David> Umh, perhaps because it adds one level of indirection to David> every access of "current"?? DaveM> Ummm, which is totally cached and therefore costs nothing? Loads are certainly not free on many CPU models. This is made worse by the fact that C alias analysis has to be so pessimistic, especially given that the kernel is compiled with -fno-strict-aliasing. --david - 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/