From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264420AbTDPOnt (for ); Wed, 16 Apr 2003 10:43:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264438AbTDPOnt (for ); Wed, 16 Apr 2003 10:43:49 -0400 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:18325 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S264420AbTDPOns (for ); Wed, 16 Apr 2003 10:43:48 -0400 Date: Wed, 16 Apr 2003 15:55:32 +0100 From: Matthew Wilcox To: Andi Kleen Cc: "David S. Miller" , akpm@digeo.com, linux-kernel@vger.kernel.org, anton@samba.org, schwidefsky@de.ibm.com, davidm@hpl.hp.com, matthew@wil.cx, ralf@linux-mips.org, rth@redhat.com Subject: Re: Reduce struct page by 8 bytes on 64bit Message-ID: <20030416145532.GA1505@parcelfarce.linux.theplanet.co.uk> References: <20030415112430.GA21072@averell> <20030416.054521.26525548.davem@redhat.com> <20030416140715.GA2159@averell> <20030416.072638.65480350.davem@redhat.com> <20030416144312.GA2327@averell> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030416144312.GA2327@averell> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Apr 16, 2003 at 04:43:12PM +0200, Andi Kleen wrote: > On sparc64. But is that true too for all other 64bit architectures supported? > > e.g. How about PA-RISC? (always seems to do things differently) As you know our only two atomic ops are load-and-clear 32-bit quantity and load-and-clear 64-bit quantity. so we take one of the hashed spinlocks .. -- "It's not Hollywood. War is real, war is primarily not about defeat or victory, it is about death. I've seen thousands and thousands of dead bodies. Do you think I want to have an academic debate on this subject?" -- Robert Fisk