PERF_EVENT_IOC_SET_FILTER 460 include/uapi/linux/perf_event.h #define PERF_EVENT_IOC_SET_FILTER _IOW('$', 6, char *) PERF_EVENT_IOC_SET_FILTER 460 tools/include/uapi/linux/perf_event.h #define PERF_EVENT_IOC_SET_FILTER _IOW('$', 6, char *)