perf counters: consolidate hw_perf save/restore APIs

Impact: cleanup

Rename them to better match up the usual IRQ disable/enable APIs:

 hw_perf_disable_all()  => hw_perf_save_disable()
 hw_perf_restore_ctrl() => hw_perf_restore()

Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h
index 9a1713a..68f6e3a 100644
--- a/include/linux/perf_counter.h
+++ b/include/linux/perf_counter.h
@@ -67,7 +67,7 @@
  * Hardware event to monitor via a performance monitoring counter:
  */
 struct perf_counter_hw_event {
-	u64			type;
+	s64			type;
 
 	u64			irq_period;
 	u32			record_type;
@@ -206,8 +206,8 @@
 extern void perf_counter_init_task(struct task_struct *task);
 extern void perf_counter_notify(struct pt_regs *regs);
 extern void perf_counter_print_debug(void);
-extern void hw_perf_restore_ctrl(u64 ctrl);
-extern u64 hw_perf_disable_all(void);
+extern u64 hw_perf_save_disable(void);
+extern void hw_perf_restore(u64 ctrl);
 extern void atomic64_counter_set(struct perf_counter *counter, u64 val64);
 extern u64 atomic64_counter_read(struct perf_counter *counter);
 
@@ -221,8 +221,8 @@
 static inline void perf_counter_init_task(struct task_struct *task)	{ }
 static inline void perf_counter_notify(struct pt_regs *regs)		{ }
 static inline void perf_counter_print_debug(void)			{ }
-static inline void hw_perf_restore_ctrl(u64 ctrl)			{ }
-static inline u64 hw_perf_disable_all(void)		      { return 0; }
+static inline void hw_perf_restore(u64 ctrl)			{ }
+static inline u64 hw_perf_save_disable(void)		      { return 0; }
 #endif
 
 #endif /* _LINUX_PERF_COUNTER_H */