uapi/linux/resource.h

0001 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
0002 #ifndef _UAPI_LINUX_RESOURCE_H
0003 #define _UAPI_LINUX_RESOURCE_H
0004
0005 #include <linux/time.h>
0006 #include <linux/types.h>
0007
0008 /*
0009  * Resource control/accounting header file for linux
0010  */
0011
0012 /*
0013  * Definition of struct rusage taken from BSD 4.3 Reno
0014  *
0015  * We don't support all of these yet, but we might as well have them....
0016  * Otherwise, each time we add new items, programs which depend on this
0017  * structure will lose.  This reduces the chances of that happening.
0018  */
0019 #define RUSAGE_SELF 0
0020 #define RUSAGE_CHILDREN (-1)
0021 #define RUSAGE_BOTH (-2)        /* sys_wait4() uses this */
0022 #define RUSAGE_THREAD   1       /* only the calling thread */
0023
0024 struct  rusage {
0025     struct __kernel_old_timeval ru_utime;   /* user time used */
0026     struct __kernel_old_timeval ru_stime;   /* system time used */
0027     __kernel_long_t ru_maxrss;  /* maximum resident set size */
0028     __kernel_long_t ru_ixrss;   /* integral shared memory size */
0029     __kernel_long_t ru_idrss;   /* integral unshared data size */
0030     __kernel_long_t ru_isrss;   /* integral unshared stack size */
0031     __kernel_long_t ru_minflt;  /* page reclaims */
0032     __kernel_long_t ru_majflt;  /* page faults */
0033     __kernel_long_t ru_nswap;   /* swaps */
0034     __kernel_long_t ru_inblock; /* block input operations */
0035     __kernel_long_t ru_oublock; /* block output operations */
0036     __kernel_long_t ru_msgsnd;  /* messages sent */
0037     __kernel_long_t ru_msgrcv;  /* messages received */
0038     __kernel_long_t ru_nsignals;    /* signals received */
0039     __kernel_long_t ru_nvcsw;   /* voluntary context switches */
0040     __kernel_long_t ru_nivcsw;  /* involuntary " */
0041 };
0042
0043 struct rlimit {
0044     __kernel_ulong_t    rlim_cur;
0045     __kernel_ulong_t    rlim_max;
0046 };
0047
0048 #define RLIM64_INFINITY     (~0ULL)
0049
0050 struct rlimit64 {
0051     __u64 rlim_cur;
0052     __u64 rlim_max;
0053 };
0054
0055 #define PRIO_MIN    (-20)
0056 #define PRIO_MAX    20
0057
0058 #define PRIO_PROCESS    0
0059 #define PRIO_PGRP   1
0060 #define PRIO_USER   2
0061
0062 /*
0063  * Limit the stack by to some sane default: root can always
0064  * increase this limit if needed..  8MB seems reasonable.
0065  */
0066 #define _STK_LIM    (8*1024*1024)
0067
0068 /*
0069  * Limit the amount of locked memory by some sane default:
0070  * root can always increase this limit if needed.
0071  *
0072  * The main use-cases are (1) preventing sensitive memory
0073  * from being swapped; (2) real-time operations; (3) via
0074  * IOURING_REGISTER_BUFFERS.
0075  *
0076  * The first two don't need much. The latter will take as
0077  * much as it can get. 8MB is a reasonably sane default.
0078  */
0079 #define MLOCK_LIMIT (8*1024*1024)
0080
0081 /*
0082  * Due to binary compatibility, the actual resource numbers
0083  * may be different for different linux versions..
0084  */
0085 #include <asm/resource.h>
0086
0087
0088 #endif /* _UAPI_LINUX_RESOURCE_H */