X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=kernel%2Fevents%2Finternal.h;h=ca6599723be5624cdeb4a3cad5ef5dd10a4e1c7b;hb=15f82fce54b86e159fe5a1d41dcdc89e12b26459;hp=eb675c4d59dfd440b9f93d92226ee2dc5ffe8290;hpb=72de4c63e5ebe8e4054ea800d7a8d4b3f033caf2;p=firefly-linux-kernel-4.4.55.git

diff --git a/kernel/events/internal.h b/kernel/events/internal.h
index eb675c4d59df..ca6599723be5 100644
--- a/kernel/events/internal.h
+++ b/kernel/events/internal.h
@@ -31,6 +31,10 @@ struct ring_buffer {
 	spinlock_t			event_lock;
 	struct list_head		event_list;
 
+	atomic_t			mmap_count;
+	unsigned long			mmap_locked;
+	struct user_struct		*mmap_user;
+
 	struct perf_event_mmap_page	*user_page;
 	void				*data_pages[0];
 };