1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _LINUX_RESOURCE_H
3#define _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 /* _LINUX_RESOURCE_H */