perf_event__synthesize_event_update_name
!perf_event__synthesize_event_update_name(&tmp.tool, evsel, process_event_name));
err = perf_event__synthesize_event_update_name(tool, evsel, process);
int perf_event__synthesize_event_update_name(const struct perf_tool *tool, struct evsel *evsel, perf_event__handler_t process);