From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757712Ab2FFRsS (ORCPT ); Wed, 6 Jun 2012 13:48:18 -0400 Received: from one.firstfloor.org ([213.235.205.2]:54975 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755181Ab2FFRsR (ORCPT ); Wed, 6 Jun 2012 13:48:17 -0400 Date: Wed, 6 Jun 2012 19:48:12 +0200 From: Andi Kleen To: Peter Zijlstra Cc: Andi Kleen , Andi Kleen , linux-kernel@vger.kernel.org, eranian@google.com Subject: Re: [PATCH 1/5] perf, x86: Don't assume the alternative cycles encoding is architectural Message-ID: <20120606174812.GI27374@one.firstfloor.org> References: <20120606141247.GD28225@tassilo.jf.intel.com> <1338992061.2749.111.camel@twins> <20120606142323.GG28225@tassilo.jf.intel.com> <1338992910.2749.121.camel@twins> <20120606143536.GH28225@tassilo.jf.intel.com> <1338993726.2749.125.camel@twins> <20120606144952.GK28225@tassilo.jf.intel.com> <1338994385.2749.130.camel@twins> <20120606160848.GG27374@one.firstfloor.org> <1339002645.2749.151.camel@twins> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1339002645.2749.151.camel@twins> User-Agent: Mutt/1.4.2.2i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 06, 2012 at 07:10:45PM +0200, Peter Zijlstra wrote: > On Wed, 2012-06-06 at 18:08 +0200, Andi Kleen wrote: > > How about newer unknown Intel CPUs with arch_perfmon >= 3? Those would get > > intel_pmu, correct? There's no guarantee that they support the trick. > > But they will have no PEBS constraints set, so effectively don't have > PEBS. Ok. I see you want to do it tricky instead of obvious. -Andi -- ak@linux.intel.com -- Speaking for myself only.