trace_probe_compare_arg_type
ret = trace_probe_compare_arg_type(&tf->tp, &to->tp);
ret = trace_probe_compare_arg_type(&tk->tp, &to->tp);
int trace_probe_compare_arg_type(struct trace_probe *a, struct trace_probe *b);
ret = trace_probe_compare_arg_type(&tu->tp, &to->tp);