PERF_EVENT_IOC_SET_OUTPUT  459 include/uapi/linux/perf_event.h #define PERF_EVENT_IOC_SET_OUTPUT		_IO ('$', 5)
PERF_EVENT_IOC_SET_OUTPUT  459 tools/include/uapi/linux/perf_event.h #define PERF_EVENT_IOC_SET_OUTPUT		_IO ('$', 5)