Re: [RFC][PATCH 0/4] tracing: Add event-fork to trace tasks children

[Steven Rostedt]

On Tue, 19 Apr 2016 23:05:28 -0300
Daniel Bristot de Oliveira <bristot@xxxxxxxxxx> 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