From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753895AbYI2Upg (ORCPT ); Mon, 29 Sep 2008 16:45:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752206AbYI2Up2 (ORCPT ); Mon, 29 Sep 2008 16:45:28 -0400 Received: from one.firstfloor.org ([213.235.205.2]:59041 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752071AbYI2Up2 (ORCPT ); Mon, 29 Sep 2008 16:45:28 -0400 Date: Mon, 29 Sep 2008 22:50:54 +0200 From: Andi Kleen To: Pardo Cc: Andi Kleen , dean gaudet , linux-kernel@vger.kernel.org, mbligh@google.com, briangrant@google.com, nil@google.com, jyasskin@google.com Subject: Re: Faster getcpu() and sched_getcpu() Message-ID: <20080929205054.GR25711@one.firstfloor.org> References: <87wsgwp6gh.fsf@basil.nowhere.org> <48E0834D.6010608@google.com> <20080929145408.GQ25711@one.firstfloor.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Sep 29, 2008 at 11:01:26AM -0700, Pardo wrote: > >[Maybe disable frame pointers for vsyscall.c and the vdso?] > > IIRC, some vsyscall.c code needs them enabled, so Dean's earlier patch split I don't think it really needs it. > vsyscall.c, creating a vsyscall_user.c for code which can run without them. > Seem reasonable? Seems unnecessarily complicated. -Andi -- ak@linux.intel.com