From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755241AbXK0HmY (ORCPT ); Tue, 27 Nov 2007 02:42:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751517AbXK0HmR (ORCPT ); Tue, 27 Nov 2007 02:42:17 -0500 Received: from gate.crashing.org ([63.228.1.57]:36400 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751409AbXK0HmQ (ORCPT ); Tue, 27 Nov 2007 02:42:16 -0500 Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, Paul Mackerras Message-Id: From: Kumar Gala To: Christoph Lameter In-Reply-To: <20071127001431.688565525@sgi.com> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v915) Subject: Re: [patch 11/14] Powerpc: Use generic per cpu Date: Tue, 27 Nov 2007 01:41:55 -0600 References: <20071127001407.859743255@sgi.com> <20071127001431.688565525@sgi.com> X-Mailer: Apple Mail (2.915) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Nov 26, 2007, at 6:14 PM, Christoph Lameter wrote: > Powerpc has a way to determine the address of the per cpu area of the > currently executing processor via the paca and the array of per cpu > offsets is avoided by looking up the per cpu area from the remote > paca's (copying x86_64). > > Cc: Paul Mackerras > Signed-off-by: Christoph Lameter > > --- > include/asm-powerpc/percpu.h | 19 ------------------- > 1 file changed, 19 deletions(-) > > Index: linux-2.6/include/asm-powerpc/percpu.h > =================================================================== > --- linux-2.6.orig/include/asm-powerpc/percpu.h 2007-11-24 > 10:27:31.088350556 -0800 > +++ linux-2.6/include/asm-powerpc/percpu.h 2007-11-24 > 10:29:20.752350757 -0800 > @@ -16,25 +16,6 @@ > #define __my_cpu_offset() get_paca()->data_offset > #define per_cpu_offset(x) (__per_cpu_offset(x)) This concerns me. paca doesn't exist on all PPC platforms. - k