Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753973AbZION2p (ORCPT ); Tue, 15 Sep 2009 09:28:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753646AbZION2n (ORCPT ); Tue, 15 Sep 2009 09:28:43 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.123]:35709 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753531AbZION2m (ORCPT ); Tue, 15 Sep 2009 09:28:42 -0400 Subject: Re: [PATCH 0/2] tracing: Tracing integration - dynamic ftrace for SystemTap From: Steven Rostedt Reply-To: rostedt@goodmis.org To: Peter Zijlstra Cc: Atsushi Tsuji , linux-kernel@vger.kernel.org, Ingo Molnar , fweisbec@gmail.com, "Frank Ch. Eigler" , paulus@samba.org, systemtap@sources.redhat.com In-Reply-To: <1253009974.5506.41.camel@laptop> References: <4AAF6724.9080201@bk.jp.nec.com> <1253009731.5506.39.camel@laptop> <1253009974.5506.41.camel@laptop> Content-Type: text/plain Organization: Kihon Technologies Inc. Date: Tue, 15 Sep 2009 09:28:44 -0400 Message-Id: <1253021324.20020.88.camel@gandalf.stny.rr.com> Mime-Version: 1.0 X-Mailer: Evolution 2.26.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1208 Lines: 31 On Tue, 2009-09-15 at 12:19 +0200, Peter Zijlstra wrote: > On Tue, 2009-09-15 at 12:15 +0200, Peter Zijlstra wrote: > > On Tue, 2009-09-15 at 19:06 +0900, Atsushi Tsuji wrote: > > > The patches doesn't contain the performance counters integration, > > > since it is still in development. I think following implementations are > > > needed: > > > - add new type to perf_id (like PERF_TYPE_FTRACE) > > > - add event ids to struct dyn_ftrace > > > - add interfaces to reference event ids by user (via debugfs?) > > > - add probe function to count ftrace events (call do_perf_swcounter_event) > > > > That's long since been done,.. > > Or are you talking about the mcount thing? Simply expose the mcount hook > as a regular tracepoint and perf can already use it. > Peter, I'm not sure what you mean by exposing the mcount hook as a tracepoint. Or you mean make it a special file in debug/tracing/events/ that lets you enable it as a profile trace? -- Steve -- 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/