From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753919AbaIOP6j (ORCPT ); Mon, 15 Sep 2014 11:58:39 -0400 Received: from mga09.intel.com ([134.134.136.24]:3053 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752714AbaIOP6i (ORCPT ); Mon, 15 Sep 2014 11:58:38 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.04,529,1406617200"; d="scan'208";a="603101070" Date: Mon, 15 Sep 2014 08:58:37 -0700 From: Andi Kleen To: Stephane Eranian Cc: linux-kernel@vger.kernel.org, peterz@infradead.org, mingo@elte.hu, kan.liang@intel.com Subject: Re: [PATCH] perf/x86/uncore: update support for client uncore IMC PMU Message-ID: <20140915155837.GR5387@tassilo.jf.intel.com> References: <20140915143832.GA3264@quad> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140915143832.GA3264@quad> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Sep 15, 2014 at 04:38:32PM +0200, Stephane Eranian wrote: > > This patch restructures the memory controller (IMC) uncore > PMU support for client SNB/IVB/HSW processors. The main change > is that it can now cope with more than one PCI device ID per > processor model. There are many flavors of memory controllers > for each processor. They have different PCI device ID, yet > they behave the same w.r.t. the memory controller PMU that > we are interested in. > > The patch now supports two distinct memory controllers for IVB > processors: one for mobile, one for desktop. I haven't investigated yet, but on my Lenovo ULT Haswell laptop the IMC PCI-ID doesn't exist, so the driver doesn't initialize. So either it's the BIOS disabling it, or it's a different ID there too. BTW any reason you didn't enable the CBOX/ARB PMUs originally for HSW? At least ARB events are useful for some things. -Andi