urand_read_without_sema
l = bpf_program__attach_usdt(skel->progs.urand_read_without_sema,
skel->links.urand_read_without_sema = l;
int BPF_USDT(urand_read_without_sema, int iter_num, int iter_cnt, int buf_sz)
void urand_read_without_sema(int iter_num, int iter_cnt, int read_sz);
urand_read_without_sema(i, count, BUF_SIZE);