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 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 /* _UAPI_LINUX_RESOURCE_H */ 89