Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761648AbZCSXr7 (ORCPT ); Thu, 19 Mar 2009 19:47:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756124AbZCSXrt (ORCPT ); Thu, 19 Mar 2009 19:47:49 -0400 Received: from e23smtp04.au.ibm.com ([202.81.31.146]:39357 "EHLO e23smtp04.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755828AbZCSXrt (ORCPT ); Thu, 19 Mar 2009 19:47:49 -0400 Date: Fri, 20 Mar 2009 05:17:34 +0530 From: "K.Prasad" To: Ingo Molnar , Linux Kernel Mailing List Cc: Alan Stern , Andrew Morton , Benjamin Herrenschmidt , Frederic Weisbecker , Maneesh Soni , Roland McGrath , Steven Rostedt Subject: [Patch 00/11] Hardware Breakpoint Interfaces - v5 Message-ID: <20090319234734.GA10517@in.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1517 Lines: 33 Hi Ingo, Please find the new set of patches that implement Hardware breakpoint interfaces for kernel- and user-space, an ftrace plugin using these interfaces to trace memory accesses over kernel symbols and a demonstrative example. While a previous version of these patches was posted here: http://lkml.org/lkml/2009/3/7/23 and generated substantial amount of discussions over LKML, a summary of proposed changes to the patchset was posted here: http://lkml.org/lkml/2009/3/13/381. In short, the infrastructure has been changed to provide interfaces to use Hardware Breakpoint (or Watchpoint) registers on a first-come first-serve basis (without over-committing resources). The serviced-requests are maintained in an array of pointers to the register's datastructure. Requests from kernel-space will be serviced in decreasing order of register numbers (starting from HB_NUM - 1). The ksym_tracer ftrace plugin now also contains a startup self-test and support for showing aggregate counters (through ftrace's histogram infrastructure). Kindly let me know if the new patchset addresses the concerns of the community and is deemed fit for inclusion in -tip tree. The patchset is based on commit 62f84ea922bd60803e446153ea99ce5d7245d6f9 of -tip tree. Thanks, K.Prasad -- 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/