On Mon, 26 Nov 2018 20:30:49 +0900
Masami Hiramatsu <mhira...@kernel.org> wrote:
> > diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
> > index f98063e273e5..477ff9412d26 100644
> > --- a/include/linux/ftrace.h
> > +++ b/include/linux/ftrace.h
> > @@ -749,6 +749,18 @@ typedef int (*trace_func_graph_ent_t)(struct
> > ftrace_graph_ent *); /* entry */
> >
> > #ifdef CONFIG_FUNCTION_GRAPH_TRACER
> >
> > +struct fgraph_ops {
> > + trace_func_graph_ent_t entryfunc;
> > + trace_func_graph_ret_t retfunc;
>
> > + struct fgraph_ops __rcu *next;
> > + unsigned long flags;
> > + void *private;
> > +#ifdef CONFIG_DYNAMIC_FTRACE
> > + struct ftrace_ops_hash local_hash;
> > + struct ftrace_ops_hash *func_hash;
> > +#endif
>
> Hmm, can we introduce these fields when we actually use it?
Sure.
>
> BTW, would you have any idea for using private field?
I believe I answered this in another email.
-- Steve
