pub unsafe extern "C" fn bpf_program__attach_perf_event_opts(
prog: *const bpf_program,
pfd: c_int,
opts: *const bpf_perf_event_opts,
) -> *mut bpf_link
pub unsafe extern "C" fn bpf_program__attach_perf_event_opts(
prog: *const bpf_program,
pfd: c_int,
opts: *const bpf_perf_event_opts,
) -> *mut bpf_link