perf_event__process_aux
int perf_event__process_aux(const struct perf_tool *tool,
if (tool->aux == perf_event__process_aux) {
if (session->tool->aux == perf_event__process_aux &&
if (session->tool->aux == perf_event__process_aux &&
if (session->tool->aux == perf_event__process_aux &&
tool->aux = perf_event__process_aux;