--- zzzz-none-000/linux-3.10.107/include/uapi/asm-generic/poll.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/uapi/asm-generic/poll.h	2021-02-04 17:41:59.000000000 +0000
@@ -30,6 +30,8 @@
 
 #define POLLFREE	0x4000	/* currently only for epoll */
 
+#define POLL_BUSY_LOOP	0x8000
+
 struct pollfd {
 	int fd;
 	short events;