event_begin
skel->links.event_begin = bpf_program__attach_raw_tracepoint(skel->progs.event_begin,
if (IS_ERR(skel->links.event_begin)) {
err = PTR_ERR(skel->links.event_begin);
int BPF_PROG(event_begin)
.is_begin_event = event_begin,
.is_begin_event = event_begin,
.is_begin_event = event_begin,