From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757431Ab2FFRLA (ORCPT ); Wed, 6 Jun 2012 13:11:00 -0400 Received: from merlin.infradead.org ([205.233.59.134]:40717 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754187Ab2FFRK7 convert rfc822-to-8bit (ORCPT ); Wed, 6 Jun 2012 13:10:59 -0400 Message-ID: <1339002645.2749.151.camel@twins> Subject: Re: [PATCH 1/5] perf, x86: Don't assume the alternative cycles encoding is architectural From: Peter Zijlstra To: Andi Kleen Cc: Andi Kleen , linux-kernel@vger.kernel.org, eranian@google.com Date: Wed, 06 Jun 2012 19:10:45 +0200 In-Reply-To: <20120606160848.GG27374@one.firstfloor.org> References: <1338944211-28275-1-git-send-email-andi@firstfloor.org> <1338979188.2749.92.camel@twins> <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> Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-Mailer: Evolution 3.2.2- Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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.