2 * include/linux/eventpoll.h ( Efficient event polling implementation )
3 * Copyright (C) 2001,...,2006 Davide Libenzi
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * Davide Libenzi <davidel@xmailserver.org>
14 #ifndef _UAPI_LINUX_EVENTPOLL_H
15 #define _UAPI_LINUX_EVENTPOLL_H
18 #include <linux/fcntl.h>
19 #include <linux/types.h>
21 /* Flags for epoll_create1. */
22 #define EPOLL_CLOEXEC O_CLOEXEC
24 /* Valid opcodes to issue to sys_epoll_ctl() */
25 #define EPOLL_CTL_ADD 1
26 #define EPOLL_CTL_DEL 2
27 #define EPOLL_CTL_MOD 3
28 #define EPOLL_CTL_DISABLE 4
31 * Request the handling of system wakeup events so as to prevent system suspends
32 * from happening while those events are being processed.
34 * Assuming neither EPOLLET nor EPOLLONESHOT is set, system suspends will not be
35 * re-allowed until epoll_wait is called again after consuming the wakeup
38 * Requires CAP_BLOCK_SUSPEND
40 #define EPOLLWAKEUP (1 << 29)
42 /* Set the One Shot behaviour for the target file descriptor */
43 #define EPOLLONESHOT (1 << 30)
45 /* Set the Edge Triggered behaviour for the target file descriptor */
46 #define EPOLLET (1 << 31)
49 * On x86-64 make the 64bit structure have the same alignment as the
50 * 32bit structure. This makes 32bit emulation easier.
52 * UML/x86_64 needs the same packing as x86_64
55 #define EPOLL_PACKED __attribute__((packed))
66 #endif /* _UAPI_LINUX_EVENTPOLL_H */