Re: Enable tracing only for one function and its children?

[Keith Busch]

On Fri, Nov 16, 2018 at 04:37:55PM -0600, Timur Tabi wrote:
> Is there a way to enable ftrace tracing only for one specific function
> and all the functions it calls?  Then when the function returns,
> disable tracing until the next time?
> 
> When I pass the function name only to set_ftrace_filter, it literally
> only traces that function, which doesn't help me.  

I think you're looking for the set_graph_function option for the
function_graph tracer.