Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756071AbZA0VCU (ORCPT ); Tue, 27 Jan 2009 16:02:20 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752033AbZA0VCJ (ORCPT ); Tue, 27 Jan 2009 16:02:09 -0500 Received: from tomts5.bellnexxia.net ([209.226.175.25]:47685 "EHLO tomts5-srv.bellnexxia.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752032AbZA0VCH (ORCPT ); Tue, 27 Jan 2009 16:02:07 -0500 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AssFABgFf0lMQWt2/2dsb2JhbACBbsk8hUw Date: Tue, 27 Jan 2009 16:02:03 -0500 From: Mathieu Desnoyers To: ltt-dev@lists.casi.polymtl.ca, linux-kernel@vger.kernel.org Subject: LTTng 0.87 improved page fault tracing Message-ID: <20090127210203.GA13478@Krystal> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline X-Editor: vi X-Info: http://krystal.dyndns.org:8080 X-Operating-System: Linux/2.6.21.3-grsec (i686) X-Uptime: 15:54:52 up 26 days, 20:53, 4 users, load average: 1.61, 1.22, 0.99 User-Agent: Mutt/1.5.16 (2007-06-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 759 Lines: 23 Hi, I just combined the 4 page fault handler events that were in the tracing hot path of LTTng into 2 : kernel page_fault_entry kernel page_fault_exit They take as parameter the combination of what was available in the trap_entry/exit events and handle_mm_fault entry/exit events. This should lessen the performance impact of the tracer when it's active. I did the related modifications in LTTV 0.12.8. Mathieu -- Mathieu Desnoyers OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68 -- 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/