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-rw-r--r--drivers/oprofile/event_buffer.h3
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);
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