Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935463Ab0KQUBc (ORCPT ); Wed, 17 Nov 2010 15:01:32 -0500 Received: from casper.infradead.org ([85.118.1.10]:56490 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935449Ab0KQUBb convert rfc822-to-8bit (ORCPT ); Wed, 17 Nov 2010 15:01:31 -0500 Subject: Re: [RFC][PATCH] perf: sysfs type id From: Peter Zijlstra To: Corey Ashford Cc: Stephane Eranian , LKML , Ingo Molnar , Lin Ming , "robert.richter" , fweisbec , paulus , Greg Kroah-Hartman , Kay Sievers , "H. Peter Anvin" In-Reply-To: <1290023834.2109.1240.camel@laptop> References: <1289339119.2191.92.camel@laptop> <1289398207.2191.117.camel@laptop> <1289398763.2191.121.camel@laptop> <1289421164.2084.56.camel@laptop> <1289423135.2084.63.camel@laptop> <4CE33F86.7040403@linux.vnet.ibm.com> <1289993128.2109.714.camel@laptop> <4CE43153.2070206@linux.vnet.ibm.com> <1290023834.2109.1240.camel@laptop> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Wed, 17 Nov 2010 21:01:12 +0100 Message-ID: <1290024072.2109.1247.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 828 Lines: 18 On Wed, 2010-11-17 at 20:57 +0100, Peter Zijlstra wrote: > > How about a compromise position: all of the arch-specific events are > > exposed to user space via sysfs iff some CONFIG_* variable to set to > > true. Something like CONFIG_EXPOSE_ALL_HW_PERF_EVENTS_IN_SYSFS. > > This way you would only use all that memory when it's explicitly > > configured in. Another thing you could do is make all PMU drivers loadable modules (most of the infrastructure for that is present) and make the exhaustive list either a module parameter or another module extending the PMU driver. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/