From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762060AbXKNTQO (ORCPT ); Wed, 14 Nov 2007 14:16:14 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753258AbXKNTP7 (ORCPT ); Wed, 14 Nov 2007 14:15:59 -0500 Received: from one.firstfloor.org ([213.235.205.2]:59235 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753223AbXKNTP7 (ORCPT ); Wed, 14 Nov 2007 14:15:59 -0500 Date: Wed, 14 Nov 2007 20:15:56 +0100 From: Andi Kleen To: Philippe Elie Cc: William Cohen , Andi Kleen , Stephane Eranian , akpm@osdl.org, Robert Richter , gregkh@suse.de, linux-kernel@vger.kernel.org Subject: Re: [perfmon] Re: [perfmon2] perfmon2 merge news Message-ID: <20071114191556.GA32238@one.firstfloor.org> References: <20071113214628.GE5747@frankl.hpl.hp.com> <20071113215056.GB17593@one.firstfloor.org> <20071113222234.GH5747@frankl.hpl.hp.com> <20071113222534.GC17145@one.firstfloor.org> <20071113225848.GK5747@frankl.hpl.hp.com> <20071114020702.GB20365@one.firstfloor.org> <20071114130909.GB6557@frankl.hpl.hp.com> <20071114142411.GD17145@one.firstfloor.org> <473B17D4.5050702@redhat.com> <20071114185340.GB2894@zaniah> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20071114185340.GB2894@zaniah> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > BTW, isn't rdpmc only enable for ring 0 on linux ? I remember a patch > to disable it, dunno if it has been applied. Obviously -- without a system call to set up performance counters it would be fairly useless. But of course once such system calls are in they should be able to trigger the bit for each process. -Andi