Re: [PATCH 0/8] bpf: Add fprobe link

Jiri Olsa
2022-02-02T17:24:22Z

On Wed, Feb 02, 2022 at 09:09:53AM -0800, Alexei Starovoitov wrote:
> On Wed, Feb 2, 2022 at 5:53 AM Jiri Olsa <jolsa@redhat.com> wrote:
> >
> > hi,
> > this patchset adds new link type BPF_LINK_TYPE_FPROBE that attaches kprobe
> > program through fprobe API [1] instroduced by Masami.
>
> No new prog type please.
> I thought I made my reasons clear earlier.
> It's a multi kprobe. Not a fprobe or any other name.
> The kernel internal names should not leak into uapi.
>

well it's not new prog type, it's new link type that allows
to attach kprobe program to multiple functions

the original change used BPF_LINK_TYPE_RAW_KPROBE, which did not
seem to fit anymore, so I moved to FPROBE, because that's what
it is ;-)

but if you don't want new name in uapi we could make this more
obvious with link name:
BPF_LINK_TYPE_MULTI_KPROBE

and bpf_attach_type:
BPF_TRACE_MULTI_KPROBE

jirka