linux-headers (unknown)
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.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
24 struct 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
43 struct rlimit {
44 __kernel_ulong_t rlim_cur;
45 __kernel_ulong_t rlim_max;
46 };
47
48 #define RLIM64_INFINITY (~0ULL)
49
50 struct 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 */
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