Re: [RFC] ftrace: Add support to keep some functions out of ftrace

Björn Töpel
2022-08-15T11:01:58Z

On Mon, 15 Aug 2022 at 10:04, Jiri Olsa <olsajiri@gmail.com> wrote:
[...]
> > > >
> > > > Today, objtool has also got involved, and added an "--mcount" option
> > > > that will create the section too.
> > > I overlooked that objtool is involved as well,
> > > will check on that
> >
> > objtool --mcount option only involves mcount_loc generation (see
> > annotate_call_site) and other validation check call destination directly
> > (see is_fentry_call).
> >
> > Some simply removing --mcount option dose work for this.
> >
> >
> > Another question, it seems we can export and use DEFINE_BPF_DISPATCHER out
> > of kernel, does that means we should add NO_MCOUNT_FILES for these single
> > uages as well?
>
> yes, cc-ing Björn to make sure it's valid use case for dispatcher
>

Hmm, could you expand a bit on how this would work?