perfcounters: hw ops rename

Impact: rename field names

Shorten them.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h
index 984da54..48f76d2 100644
--- a/include/linux/perf_counter.h
+++ b/include/linux/perf_counter.h
@@ -128,9 +128,9 @@
  * struct hw_perf_counter_ops - performance counter hw ops
  */
 struct hw_perf_counter_ops {
-	void (*hw_perf_counter_enable)	(struct perf_counter *counter);
-	void (*hw_perf_counter_disable)	(struct perf_counter *counter);
-	void (*hw_perf_counter_read)	(struct perf_counter *counter);
+	void (*enable)			(struct perf_counter *counter);
+	void (*disable)			(struct perf_counter *counter);
+	void (*read)			(struct perf_counter *counter);
 };
 
 /**