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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-13 16:28:32 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-13 16:28:32 -0400
commit0b381a286e5d748b1fd80095d3dd52326819742f (patch)
treed72fca56123520b9c78661137f8a02b6ad26f95b /include/uapi/linux/eventpoll.h
parent034b5eeb6bc783e7f60e11299154556e65699e7a (diff)
parent5921e6f8809b1616932ca4afd40fe449faa8fd88 (diff)
Merge tag 'disintegrate-main-20121013' of git://git.infradead.org/users/dhowells/linux-headers
Pull UAPI disintegration for include/linux/{,byteorder/}*.h from David Howells: "The patches contained herein do the following: (1) Remove kernel-only stuff in linux/ppp-comp.h from the UAPI. I checked this with Paul Mackerras before I created the patch and he suggested some extra bits to unexport. (2) Remove linux/blk_types.h entirely from the UAPI as none of it is userspace applicable, and remove from the UAPI that part of linux/fs.h that was the reason for linux/blk_types.h being exported in the first place. I discussed this with Jens Axboe before creating the patch. (3) The big patch of the series to disintegrate include/linux/*.h as a unit. This could be split up, though there would be collisions in moving stuff between the two Kbuild files when the parts are merged as that file is sorted alphabetically rather than being grouped by subsystem. Of this set of headers, 17 files have changed in the UAPI exported region since the 4th and only 8 since the 9th so there isn't much change in this area - as one might expect. It should be pretty obvious and straightforward if it does come to fixing up: stuff in __KERNEL__ guards stays where it is and stuff outside moves to the same file in the include/uapi/linux/ directory. If a new file appears then things get a bit more complicated as the "headers +=" line has to move to include/uapi/linux/Kbuild. Only one new file has appeared since the 9th and I judge this type of event relatively unlikely. (4) A patch to disintegrate include/linux/byteorder/*.h as a unit. Signed-off-by: David Howells <dhowells@redhat.com>" * tag 'disintegrate-main-20121013' of git://git.infradead.org/users/dhowells/linux-headers: UAPI: (Scripted) Disintegrate include/linux/byteorder UAPI: (Scripted) Disintegrate include/linux UAPI: Unexport linux/blk_types.h UAPI: Unexport part of linux/ppp-comp.h
Diffstat (limited to 'include/uapi/linux/eventpoll.h')
-rw-r--r--include/uapi/linux/eventpoll.h66
1 files changed, 66 insertions, 0 deletions
diff --git a/include/uapi/linux/eventpoll.h b/include/uapi/linux/eventpoll.h
new file mode 100644
index 000000000000..8c99ce7202c5
--- /dev/null
+++ b/include/uapi/linux/eventpoll.h
@@ -0,0 +1,66 @@
1/*
2 * include/linux/eventpoll.h ( Efficient event polling implementation )
3 * Copyright (C) 2001,...,2006 Davide Libenzi
4 *
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.
9 *
10 * Davide Libenzi <davidel@xmailserver.org>
11 *
12 */
13
14#ifndef _UAPI_LINUX_EVENTPOLL_H
15#define _UAPI_LINUX_EVENTPOLL_H
16
17/* For O_CLOEXEC */
18#include <linux/fcntl.h>
19#include <linux/types.h>
20
21/* Flags for epoll_create1. */
22#define EPOLL_CLOEXEC O_CLOEXEC
23
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
29
30/*
31 * Request the handling of system wakeup events so as to prevent system suspends
32 * from happening while those events are being processed.
33 *
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
36 * event(s).
37 *
38 * Requires CAP_BLOCK_SUSPEND
39 */
40#define EPOLLWAKEUP (1 << 29)
41
42/* Set the One Shot behaviour for the target file descriptor */
43#define EPOLLONESHOT (1 << 30)
44
45/* Set the Edge Triggered behaviour for the target file descriptor */
46#define EPOLLET (1 << 31)
47
48/*
49 * On x86-64 make the 64bit structure have the same alignment as the
50 * 32bit structure. This makes 32bit emulation easier.
51 *
52 * UML/x86_64 needs the same packing as x86_64
53 */
54#ifdef __x86_64__
55#define EPOLL_PACKED __attribute__((packed))
56#else
57#define EPOLL_PACKED
58#endif
59
60struct epoll_event {
61 __u32 events;
62 __u64 data;
63} EPOLL_PACKED;
64
65
66#endif /* _UAPI_LINUX_EVENTPOLL_H */