From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753041AbcDTCaQ (ORCPT ); Tue, 19 Apr 2016 22:30:16 -0400 Received: from smtprelay0251.hostedemail.com ([216.40.44.251]:39753 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751878AbcDTCaO (ORCPT ); Tue, 19 Apr 2016 22:30:14 -0400 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::::::::::::::,RULES_HIT:41:355:379:541:599:800:960:968:973:988:989:1260:1277:1311:1313:1314:1345:1359:1437:1515:1516:1518:1534:1539:1593:1594:1711:1730:1747:1777:1792:2393:2553:2559:2562:2693:3138:3139:3140:3141:3142:3352:3622:3865:3867:3868:3870:3871:3872:3874:4250:5007:6261:7875:9040:10004:10400:10848:10967:11026:11232:11658:11914:12517:12519:12663:12740:13069:13311:13357:13439:14181:14659:14721:21080:30012:30054:30090:30091,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:2,LUA_SUMMARY:none X-HE-Tag: care68_3bef3c7d86b52 X-Filterd-Recvd-Size: 1862 Date: Tue, 19 Apr 2016 22:30:10 -0400 From: Steven Rostedt To: Daniel Bristot de Oliveira Cc: linux-kernel@vger.kernel.org, Ingo Molnar , Andrew Morton , "H. Peter Anvin" , Thomas Gleixner , Jiri Olsa , Masami Hiramatsu , Namhyung Kim , linux-trace-users@vger.kernel.org Subject: Re: [RFC][PATCH 0/4] tracing: Add event-fork to trace tasks children Message-ID: <20160419223010.3c46e254@grimm.local.home> In-Reply-To: <5716E3E8.7000609@redhat.com> References: <20160419143421.829909157@goodmis.org> <5716E3E8.7000609@redhat.com> X-Mailer: Claws Mail 3.13.2 (GTK+ 2.24.30; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 19 Apr 2016 23:05:28 -0300 Daniel Bristot de Oliveira wrote: > On 04/19/2016 11:34 AM, Steven Rostedt wrote: > > This code adds the event-fork option that, when set, will have tasks > > with their PIDs in set_event_pid add their children PIDs when they > > fork. It will also remove their PID from the file on exit. > > That is a nice feature! I tested it and it works. But, look this... > > Set the event-fork, the current shell pid, and enable the trace: > > [root@f23 tracing]# echo event-fork > trace_options > [root@f23 tracing]# echo $$ > set_ftrace_pid event-fork does not affect function tracing. I'm currently working on patches to create a function-fork option for 4.8. -- Steve