1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 2a0da021c23f..441992a9775c 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -602,6 +602,8 @@ enum perf_event_active_state {
 
 struct file;
 
+#define PERF_BUFFER_WRITABLE            0x01
+
 struct perf_buffer {
         atomic_t                        refcount;
         struct rcu_head                 rcu_head;