From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760706Ab2D0QX4 (ORCPT ); Fri, 27 Apr 2012 12:23:56 -0400 Received: from mail-lpp01m010-f46.google.com ([209.85.215.46]:42131 "EHLO mail-lpp01m010-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760389Ab2D0QXz (ORCPT ); Fri, 27 Apr 2012 12:23:55 -0400 MIME-Version: 1.0 In-Reply-To: <1335543660.13683.113.camel@twins> References: <1333390758-10893-1-git-send-email-robert.richter@amd.com> <1333390758-10893-7-git-send-email-robert.richter@amd.com> <1334398906.2528.49.camel@twins> <20120423095659.GS9747@erda.amd.com> <20120427123434.GF18810@erda.amd.com> <20120427125410.GG18810@erda.amd.com> <1335540633.2463.133.camel@laptop> <20120427160922.GI18810@erda.amd.com> <1335543660.13683.113.camel@twins> Date: Fri, 27 Apr 2012 18:23:53 +0200 Message-ID: Subject: Re: [PATCH 06/12] perf/x86-ibs: Precise event sampling with IBS for AMD CPUs From: Stephane Eranian To: Peter Zijlstra Cc: Robert Richter , Ingo Molnar , Arnaldo Carvalho de Melo , LKML Content-Type: text/plain; charset=UTF-8 X-System-Of-Record: true Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Apr 27, 2012 at 6:21 PM, Peter Zijlstra wrote: > On Fri, 2012-04-27 at 18:09 +0200, Robert Richter wrote: >> >> But do you agree to have level 1 and 2 mapped to ibs, not just only >> level 2 (since I don't want to fail with r076:p)? > > Sure, you can have 1 and 2 mean the same. 2 wants 0 skid, 1 wants > constant skid, 0 is a constant, therefore its consistent. Yes. With IBS I would expect no difference in the samples between level 1 and 2. But that's okay. As Peter says, it still fits within the definitions of those levels.