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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 C2C27C43381 for ; Tue, 12 Mar 2019 15:35:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9E0572147C for ; Tue, 12 Mar 2019 15:35:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726218AbfCLPfJ (ORCPT ); Tue, 12 Mar 2019 11:35:09 -0400 Received: from mail.kernel.org ([198.145.29.99]:40710 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726510AbfCLPfI (ORCPT ); Tue, 12 Mar 2019 11:35:08 -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 BA1102083D; Tue, 12 Mar 2019 15:35:07 +0000 (UTC) Date: Tue, 12 Mar 2019 11:35:06 -0400 From: Steven Rostedt To: Tzvetomir Stoyanov Cc: Claudio , "linux-trace-devel@vger.kernel.org" Subject: Re: [PATCH v4 00/46] Libtraceevent MAN pages Message-ID: <20190312113506.52ca2568@gandalf.local.home> In-Reply-To: References: <20190308133654.21264-1-tstoyanov@vmware.com> <438810f6-6a04-aa9d-a38a-1d0e04c03c5c@gliwa.com> X-Mailer: Claws Mail 3.16.0 (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 Fri, 8 Mar 2019 15:47:14 +0000 Tzvetomir Stoyanov wrote: > Steven could describe it in more details, but we work on common > tracing platform - set of libraries, which will expose the tracing > functionality, currently available for trace-cmd and kernelshark only, > to any application. [ Just came back from SCaLE 17x conference ] Note, the libtraceevent is currently just a way to parse the data read by the Linux kernel trace events. The format files exist in the tracefs file system under events///format (e.g. events/sched/sched_switch/format). The library is used by trace-cmd, perf, powertop and mce utils. Currently, each has their own copy. We are working on making this into a shared library where the code no longer needs to be duplicated. There's also going to be an effort to create libftrace, that will take the functionality of trace-cmd and move it into a library, such that any tool can start ftrace tracing, and record data. But that's not going to happen until after we finish getting libtraceevent out. -- Steve