From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_2 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 77A5EC2BB84 for ; Wed, 16 Sep 2020 19:05:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2DF56206B2 for ; Wed, 16 Sep 2020 19:05:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727610AbgIPTFn (ORCPT ); Wed, 16 Sep 2020 15:05:43 -0400 Received: from mail.kernel.org ([198.145.29.99]:37586 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727429AbgIPRqT (ORCPT ); Wed, 16 Sep 2020 13:46:19 -0400 Received: from gandalf.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 399AE20771; Wed, 16 Sep 2020 13:26:46 +0000 (UTC) Date: Wed, 16 Sep 2020 09:26:44 -0400 From: Steven Rostedt To: "Tzvetomir Stoyanov (VMware)" Cc: linux-trace-devel@vger.kernel.org Subject: Re: [PATCH v2 0/3] Initial trace-cmd support for ftrace uprobes Message-ID: <20200916092644.1d94cdc2@gandalf.local.home> In-Reply-To: <20200916114709.291533-1-tz.stoyanov@gmail.com> References: <20200916114709.291533-1-tz.stoyanov@gmail.com> X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-trace-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-trace-devel@vger.kernel.org On Wed, 16 Sep 2020 14:47:06 +0300 "Tzvetomir Stoyanov (VMware)" wrote: > Ftrace supports uprobes - trace events on user space applications. > Trace-cmd cannot configure uprobes, in order to support it this new > functionality is introduced: > - Function name to file offset mapping, this information is extracted > from the dwarf and ELF headers in the binary file. > - New options are added to "trace-cmd record" for setting a uprobe: > --uprobe file:function > --uprobe-ret file:function Thanks Tzvetomir, I'll take a look at this. -- Steve > > Tzvetomir Stoyanov (VMware) (3): > trace-cmd: Internal refactoring of pid address map logic > trace-cmd: New internal APIs for reading ELF header > trace-cmd: [POC] Add support for uprobes > > Makefile | 10 + > include/trace-cmd/trace-cmd.h | 9 + > tracecmd/Makefile | 2 + > tracecmd/include/trace-local.h | 49 +- > tracecmd/trace-obj-debug.c | 823 +++++++++++++++++++++++++++++++++ > tracecmd/trace-record.c | 193 ++++---- > tracecmd/trace-uprobes.c | 221 +++++++++ > tracecmd/trace-usage.c | 4 + > 8 files changed, 1197 insertions(+), 114 deletions(-) > create mode 100644 tracecmd/trace-obj-debug.c > create mode 100644 tracecmd/trace-uprobes.c >