From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935222Ab3GSC0n (ORCPT ); Thu, 18 Jul 2013 22:26:43 -0400 Received: from mga14.intel.com ([143.182.124.37]:4710 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935116Ab3GSC0Z (ORCPT ); Thu, 18 Jul 2013 22:26:25 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.89,697,1367996400"; d="scan'208";a="333641510" Message-ID: <51E8A3CA.7010104@intel.com> Date: Fri, 19 Jul 2013 10:26:18 +0800 From: "Yan, Zheng" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130514 Thunderbird/17.0.6 MIME-Version: 1.0 To: Peter Zijlstra CC: linux-kernel@vger.kernel.org, mingo@elte.hu, eranian@google.com, ak@linux.intel.com Subject: Re: [PATCH] perf, x86: Add Silvermont (22nm Atom) support References: <1374125767-9411-1-git-send-email-zheng.z.yan@intel.com> <20130718082324.GA27075@twins.programming.kicks-ass.net> <51E7A6F3.10109@intel.com> In-Reply-To: <51E7A6F3.10109@intel.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/18/2013 04:27 PM, Yan, Zheng wrote: > On 07/18/2013 04:23 PM, Peter Zijlstra wrote: >> On Thu, Jul 18, 2013 at 01:36:07PM +0800, Yan, Zheng wrote: >>> +static struct event_constraint intel_slm_event_constraints[] __read_mostly = >>> +{ >>> + FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */ >>> + FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */ >>> + FIXED_EVENT_CONSTRAINT(0x013c, 2), /* CPU_CLK_UNHALTED.REF */ >>> + FIXED_EVENT_CONSTRAINT(0x0300, 2), /* pseudo CPU_CLK_UNHALTED.REF */ >> >> So the normal event 0x13c and the fixed counter 2 are normally _not_ the >> same. Are they for slm? Are you sure? >> > > yes, I'm sure. see page 15-15 of http://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-optimization-manual.pdf > I'm sorry, I was wrong. --- perf stat -e ref-cycles -e cpu/config=0x013c/ sleep 1 Performance counter stats for 'sleep 1': 1,181,220 ref-cycles 98,434 cpu/config=0x013c/ 0.196653863 seconds time elapsed