From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758937Ab1D2OUx (ORCPT ); Fri, 29 Apr 2011 10:20:53 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:60635 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757942Ab1D2OUw (ORCPT ); Fri, 29 Apr 2011 10:20:52 -0400 Date: Fri, 29 Apr 2011 16:20:37 +0200 From: Ingo Molnar To: David Ahern Cc: LKML , Arnaldo Carvalho de Melo , Peter Zijlstra , Thomas Gleixner , =?iso-8859-1?Q?Fr=E9d=E9ric?= Weisbecker Subject: Re: perf stat branch: perf stat fails on unsupported event Message-ID: <20110429142037.GB4106@elte.hu> References: <4DBAC59F.2020009@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4DBAC59F.2020009@gmail.com> User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.3.1 -2.0 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * David Ahern wrote: > This is a Dell R410 with an E5620 processor. That's a Westmere CPU. Could you check whether the patch below applied to latest -tip gives you stalled-cycles-frontend and stalled-cycles-backend events? Thanks, Ingo ---------------> >>From 3808ae38f1905c1f11da46ac981c8d2579936fd8 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Sat, 30 Apr 2011 09:14:54 +0200 Subject: [PATCH] perf events, x86: Add Westmere stalled-cycles-frontend/backend events Extend the Intel Westmere PMU driver with definitions for generic front-end and back-end stall events. ( These are only approximations. ) Reported-by: David Ahern Cc: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Cc: Frederic Weisbecker Link: http://lkml.kernel.org/n/tip-7y40wib8n008io7hjpn1dsrm@git.kernel.org Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/perf_event_intel.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c index 7983b9a..be8363a 100644 --- a/arch/x86/kernel/cpu/perf_event_intel.c +++ b/arch/x86/kernel/cpu/perf_event_intel.c @@ -1458,6 +1458,12 @@ static __init int intel_pmu_init(void) x86_pmu.enable_all = intel_pmu_nhm_enable_all; x86_pmu.pebs_constraints = intel_westmere_pebs_event_constraints; x86_pmu.extra_regs = intel_westmere_extra_regs; + + /* UOPS_ISSUED.STALLED_CYCLES */ + intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = 0x180010e; + /* UOPS_EXECUTED.CORE_ACTIVE_CYCLES,c=1,i=1 */ + intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = 0x1803fb1; + pr_cont("Westmere events, "); break;