1/*	$NetBSD: linux_sched.h,v 1.10 2021/09/19 23:51:37 thorpej Exp $	*/
2
3/*-
4 * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 * NASA Ames Research Center.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#ifndef _LINUX_SCHED_H
34#define	_LINUX_SCHED_H
35
36/*
37 * Flags passed to the Linux __clone(2) system call.
38 */
39#define	LINUX_CLONE_CSIGNAL	0x000000ff	/* signal to be sent at exit */
40#define	LINUX_CLONE_VM		0x00000100	/* share address space */
41#define	LINUX_CLONE_FS		0x00000200	/* share "file system" info */
42#define	LINUX_CLONE_FILES	0x00000400	/* share file descriptors */
43#define	LINUX_CLONE_SIGHAND	0x00000800	/* share signal actions */
44#define	LINUX_CLONE_PID		0x00001000	/* share process ID */
45#define	LINUX_CLONE_PTRACE	0x00002000	/* ptrace(2) continues on
46						   child */
47#define	LINUX_CLONE_VFORK	0x00004000	/* parent blocks until child
48						   exits */
49#define LINUX_CLONE_PARENT	0x00008000	/* want same parent as cloner */
50#define LINUX_CLONE_THREAD	0x00010000	/* same thread group */
51#define LINUX_CLONE_NEWNS	0x00020000	/* new namespace group */
52#define LINUX_CLONE_SYSVSEM	0x00040000	/* share SysV SEM_UNDO */
53#define LINUX_CLONE_SETTLS	0x00080000	/* create new TLS for child */
54#define LINUX_CLONE_PARENT_SETTID \
55				0x00100000	/* set TID in the parent */
56#define LINUX_CLONE_CHILD_CLEARTID \
57				0x00200000	/* clear TID in the child */
58#define LINUX_CLONE_DETACHED	0x00400000	/* unused */
59#define LINUX_CLONE_UNTRACED	0x00800000	/* set if parent cannot force CLONE_PTRACE */
60#define LINUX_CLONE_CHILD_SETTID \
61				0x01000000	/* set TID in the child */
62#define LINUX_CLONE_STOPPED	0x02000000	/* start in stopped state */
63
64struct linux_sched_param {
65	int	sched_priority;
66};
67
68#define LINUX_SCHED_OTHER	0
69#define LINUX_SCHED_FIFO	1
70#define LINUX_SCHED_RR		2
71
72struct linux_timespec {
73	linux_time_t	tv_sec;		/* seconds */
74	long		tv_nsec;	/* nanoseconds */
75};
76
77struct linux_itimerspec {
78	struct linux_timespec it_interval;
79	struct linux_timespec it_value;
80};
81
82#define LINUX_CLOCK_REALTIME		0
83#define LINUX_CLOCK_MONOTONIC		1
84#define LINUX_CLOCK_PROCESS_CPUTIME_ID	2
85#define LINUX_CLOCK_THREAD_CPUTIME_ID	3
86#define LINUX_CLOCK_MONOTONIC_RAW	4
87#define	LINUX_CLOCK_REALTIME_COARSE	5
88#define	LINUX_CLOCK_MONOTONIC_COARSE	6
89#define	LINUX_CLOCK_BOOTTIME		7
90#define	LINUX_CLOCK_BOOTTIME_ALARM	8
91#define	LINUX_CLOCK_REALTIME_ALARM	9
92
93#define LINUX_TIMER_ABSTIME		0x01
94
95int	linux_to_native_clockid(clockid_t *, clockid_t);
96
97void	native_to_linux_timespec(struct linux_timespec *,
98	    const struct timespec *);
99void	linux_to_native_timespec(struct timespec *,
100	    const struct linux_timespec *);
101
102void	native_to_linux_itimerspec(struct linux_itimerspec *,
103	    const struct itimerspec *);
104void	linux_to_native_itimerspec(struct itimerspec *,
105	    const struct linux_itimerspec *);
106
107int	linux_to_native_timer_create_clockid(clockid_t *, clockid_t);
108
109int	linux_to_native_timerfd_settime_flags(int *, int);
110
111#endif /* _LINUX_SCHED_H */
112