Re: [PATCHv2] tracing: let user specify tracing_thresh after selecting function_graph

From: Steven Rostedt
Date: Tue Jul 15 2014 - 09:04:55 EST

On Tue, 15 Jul 2014 13:27:19 +0400
Stanislav Fomichev <stfomichev@xxxxxxxxxxxxxx> wrote:

> Hi Steven,
> Did you have some spare time to check why I'm getting triple fault with the
> jump labels inside function tracers? Or will you just pull my another
> patch without them?

No, I don't want the overhead of that check if it isn't needed. You
don't need to put a jump label in there either.

Just create another ftrace_ops function that we can update that does
the check when the function is needed. Look at what happens when
someone sets the set_ftrace_pid file.

-- Steve
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