1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/oprofile/event_buffer.h b/drivers/oprofile/event_buffer.h
index 442aaad391e0..018023630599 100644
--- a/drivers/oprofile/event_buffer.h
+++ b/drivers/oprofile/event_buffer.h
@@ -35,6 +35,9 @@ void wake_up_buffer_waiter(void);
 #define TRACE_BEGIN_CODE                8
 #define TRACE_END_CODE                  9
  
+#define INVALID_COOKIE ~0UL
+#define NO_COOKIE 0UL
+
 /* add data to the event buffer */
 void add_event_entry(unsigned long data);