Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752720AbZFMDoN (ORCPT ); Fri, 12 Jun 2009 23:44:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751780AbZFMDoB (ORCPT ); Fri, 12 Jun 2009 23:44:01 -0400 Received: from bilbo.ozlabs.org ([203.10.76.25]:45650 "EHLO bilbo.ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751581AbZFMDoB (ORCPT ); Fri, 12 Jun 2009 23:44:01 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <18995.8319.322002.917595@cargo.ozlabs.ibm.com> Date: Sat, 13 Jun 2009 13:43:59 +1000 From: Paul Mackerras To: Corey Ashford Cc: LKML , Ingo Molnar , Peter Zijlstra Subject: Re: perf_counters: page fault trace record In-Reply-To: <4A330022.3070105@linux.vnet.ibm.com> References: <4A330022.3070105@linux.vnet.ibm.com> X-Mailer: VM 8.0.12 under 22.2.1 (i486-pc-linux-gnu) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 668 Lines: 17 Corey Ashford writes: > One of the tools we are working on needs to be able to look not only at counts > of page faults, but where they are occurring (ip and faulting page address). > > What would you think about adding a new bit to the config record, something like: Can't you do what you need just using a page fault software counter with sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_ADDR and sample_period = 1? Paul. -- 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/