1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _UAPI_LINUX_RESOURCE_H
3#define _UAPI_LINUX_RESOURCE_H
4
5#include <linux/time_types.h>
6#include <linux/types.h>
7
8/*
9 * Resource control/accounting header file for linux
10 */
11
12/*
13 * Definition of struct rusage taken from BSD 4.3 Reno
14 *
15 * We don't support all of these yet, but we might as well have them....
16 * Otherwise, each time we add new items, programs which depend on this
17 * structure will lose.  This reduces the chances of that happening.
18 */
19#define	RUSAGE_SELF	0
20#define	RUSAGE_CHILDREN	(-1)
21#define RUSAGE_BOTH	(-2)		/* sys_wait4() uses this */
22#define	RUSAGE_THREAD	1		/* only the calling thread */
23
24struct	rusage {
25	struct __kernel_old_timeval ru_utime;	/* user time used */
26	struct __kernel_old_timeval ru_stime;	/* system time used */
27	__kernel_long_t	ru_maxrss;	/* maximum resident set size */
28	__kernel_long_t	ru_ixrss;	/* integral shared memory size */
29	__kernel_long_t	ru_idrss;	/* integral unshared data size */
30	__kernel_long_t	ru_isrss;	/* integral unshared stack size */
31	__kernel_long_t	ru_minflt;	/* page reclaims */
32	__kernel_long_t	ru_majflt;	/* page faults */
33	__kernel_long_t	ru_nswap;	/* swaps */
34	__kernel_long_t	ru_inblock;	/* block input operations */
35	__kernel_long_t	ru_oublock;	/* block output operations */
36	__kernel_long_t	ru_msgsnd;	/* messages sent */
37	__kernel_long_t	ru_msgrcv;	/* messages received */
38	__kernel_long_t	ru_nsignals;	/* signals received */
39	__kernel_long_t	ru_nvcsw;	/* voluntary context switches */
40	__kernel_long_t	ru_nivcsw;	/* involuntary " */
41};
42
43struct rlimit {
44	__kernel_ulong_t	rlim_cur;
45	__kernel_ulong_t	rlim_max;
46};
47
48#define RLIM64_INFINITY		(~0ULL)
49
50struct rlimit64 {
51	__u64 rlim_cur;
52	__u64 rlim_max;
53};
54
55#define	PRIO_MIN	(-20)
56#define	PRIO_MAX	20
57
58#define	PRIO_PROCESS	0
59#define	PRIO_PGRP	1
60#define	PRIO_USER	2
61
62/*
63 * Limit the stack by to some sane default: root can always
64 * increase this limit if needed..  8MB seems reasonable.
65 */
66#define _STK_LIM	(8*1024*1024)
67
68/*
69 * Limit the amount of locked memory by some sane default:
70 * root can always increase this limit if needed.
71 *
72 * The main use-cases are (1) preventing sensitive memory
73 * from being swapped; (2) real-time operations; (3) via
74 * IOURING_REGISTER_BUFFERS.
75 *
76 * The first two don't need much. The latter will take as
77 * much as it can get. 8MB is a reasonably sane default.
78 */
79#define MLOCK_LIMIT	(8*1024*1024)
80
81/*
82 * Due to binary compatibility, the actual resource numbers
83 * may be different for different linux versions..
84 */
85#include <asm/resource.h>
86
87
88#endif /* _UAPI_LINUX_RESOURCE_H */
89