#define PERF_COUNTER_IOC_RESET _IO ('$', 3)
#define PERF_COUNTER_IOC_PERIOD _IOW('$', 4, u64)
#define PERF_COUNTER_IOC_SET_OUTPUT _IO ('$', 5)
+#define PERF_COUNTER_IOC_SET_FILTER _IOW('$', 6, char *)
enum perf_counter_ioc_flags {
PERF_IOC_FLAG_GROUP = 1U << 0,