From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 13895 invoked by alias); 22 Feb 2010 23:14:38 -0000 Received: (qmail 13884 invoked by uid 22791); 22 Feb 2010 23:14:38 -0000 X-SWARE-Spam-Status: No, hits=-6.9 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_HI,SPF_HELO_PASS X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Mon, 22 Feb 2010 23:14:34 +0000 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o1MNEW0w014969 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Mon, 22 Feb 2010 18:14:32 -0500 Received: from [10.16.2.46] (dhcp-100-2-46.bos.redhat.com [10.16.2.46]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o1MNETEk003205; Mon, 22 Feb 2010 18:14:30 -0500 Message-ID: <4B830FDB.7010202@redhat.com> Date: Mon, 22 Feb 2010 23:14:00 -0000 From: Masami Hiramatsu User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.7) Gecko/20100120 Fedora/3.0.1-1.fc11 Thunderbird/3.0.1 MIME-Version: 1.0 To: Frederic Weisbecker , Ingo Molnar , Ananth N Mavinakayanahalli , lkml CC: Jim Keniston , Srikar Dronamraju , Christoph Hellwig , Steven Rostedt , "H. Peter Anvin" , Anders Kaseorg , Tim Abbott , Andi Kleen , Jason Baron , Mathieu Desnoyers , systemtap , DLE Subject: Re: [PATCH -tip v10 0/9] kprobes: Kprobes jump optimization support References: <20100218221247.19637.80088.stgit@dhcp-100-2-132.bos.redhat.com> In-Reply-To: <20100218221247.19637.80088.stgit@dhcp-100-2-132.bos.redhat.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-IsSubscribed: yes Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2010-q1/txt/msg00450.txt.bz2 Masami Hiramatsu wrote: > Hi Ingo, > > Here are the patchset of the kprobes jump optimization v10 > (a.k.a. Djprobe). This version just updated a document, > and applicable for 2.6.33-rc8-tip. BTW, this optimization is automatically done in kprobes. (no other tools/changes are required for it) This means all users including perf-probe have a benefit from this feature just by configuring CONFIG_OPTPROBES=y :) So it's a part of perf-probe/kprobe-tracer enhancement, IMHO. Thank you, -- Masami Hiramatsu e-mail: mhiramat@redhat.com