perf counters: clean up 'raw' type API

Impact: cleanup

Introduce a separate hw_event type.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

include/linux/perf_counter.h

@@ -38,6 +38,7 @@ enum hw_event_types {
 	 * If this bit is set in the type, then trigger NMI sampling:
 	 */
 	PERF_COUNT_NMI			= (1 << 30),
+	PERF_COUNT_RAW			= (1 << 31),
 };
 
 /*
@@ -49,6 +50,12 @@ enum perf_record_type {
 	PERF_RECORD_GROUP,
 };
 
+struct perf_counter_event {
+	u32			hw_event_type;
+	u32			hw_event_period;
+	u64			hw_raw_ctrl;
+};
+
 /**
  * struct hw_perf_counter - performance counter hardware details
  */