--- /dev/null
+From 7e040726850a106587485c21bdacc0bfc8a0cbed Mon Sep 17 00:00:00 2001
+From: Greg KH <gregkh@linuxfoundation.org>
+Date: Wed, 8 Mar 2017 19:03:44 +0100
+Subject: eventpoll.h: add missing epoll event masks
+
+From: Greg KH <gregkh@linuxfoundation.org>
+
+commit 7e040726850a106587485c21bdacc0bfc8a0cbed upstream.
+
+[resend due to me forgetting to cc: linux-api the first time around I
+posted these back on Feb 23]
+
+From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+For some reason these values are not in the uapi header file, so any
+libc has to define it themselves. To prevent them from needing to do
+this, just have the kernel provide the correct values.
+
+Reported-by: Elliott Hughes <enh@google.com>
+Signed-off-by: Greg Hackmann <ghackmann@google.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ include/uapi/linux/eventpoll.h | 13 +++++++++++++
+ 1 file changed, 13 insertions(+)
+
+--- a/include/uapi/linux/eventpoll.h
++++ b/include/uapi/linux/eventpoll.h
+@@ -26,6 +26,19 @@
+ #define EPOLL_CTL_DEL 2
+ #define EPOLL_CTL_MOD 3
+
++/* Epoll event masks */
++#define EPOLLIN 0x00000001
++#define EPOLLPRI 0x00000002
++#define EPOLLOUT 0x00000004
++#define EPOLLERR 0x00000008
++#define EPOLLHUP 0x00000010
++#define EPOLLRDNORM 0x00000040
++#define EPOLLRDBAND 0x00000080
++#define EPOLLWRNORM 0x00000100
++#define EPOLLWRBAND 0x00000200
++#define EPOLLMSG 0x00000400
++#define EPOLLRDHUP 0x00002000
++
+ /*
+ * Request the handling of system wakeup events so as to prevent system suspends
+ * from happening while those events are being processed.