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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 | #ifndef _LINUX_KERNEL_H #define _LINUX_KERNEL_H /* * 'kernel.h' contains some often-used function prototypes etc */ #ifdef __KERNEL__ #include <stdarg.h> #include <linux/linkage.h> #include <linux/stddef.h> #include <linux/types.h> /* Optimization barrier */ /* The "volatile" is due to gcc bugs */ #define barrier() __asm__ __volatile__("": : :"memory") #define INT_MAX ((int)(~0U>>1)) #define INT_MIN (-INT_MAX - 1) #define UINT_MAX (~0U) #define LONG_MAX ((long)(~0UL>>1)) #define LONG_MIN (-LONG_MAX - 1) #define ULONG_MAX (~0UL) #define STACK_MAGIC 0xdeadbeef #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) #define KERN_EMERG "<0>" /* system is unusable */ #define KERN_ALERT "<1>" /* action must be taken immediately */ #define KERN_CRIT "<2>" /* critical conditions */ #define KERN_ERR "<3>" /* error conditions */ #define KERN_WARNING "<4>" /* warning conditions */ #define KERN_NOTICE "<5>" /* normal but significant condition */ #define KERN_INFO "<6>" /* informational */ #define KERN_DEBUG "<7>" /* debug-level messages */ # define NORET_TYPE /**/ # define ATTRIB_NORET __attribute__((noreturn)) # define NORET_AND noreturn, #ifdef __i386__ #define FASTCALL(x) x __attribute__((regparm(3))) #else #define FASTCALL(x) x #endif struct completion; extern struct notifier_block *panic_notifier_list; NORET_TYPE void panic(const char * fmt, ...) __attribute__ ((NORET_AND format (printf, 1, 2))); asmlinkage NORET_TYPE void do_exit(long error_code) ATTRIB_NORET; NORET_TYPE void complete_and_exit(struct completion *, long) ATTRIB_NORET; extern int abs(int); extern unsigned long simple_strtoul(const char *,char **,unsigned int); extern long simple_strtol(const char *,char **,unsigned int); extern unsigned long long simple_strtoull(const char *,char **,unsigned int); extern long long simple_strtoll(const char *,char **,unsigned int); extern int sprintf(char * buf, const char * fmt, ...) __attribute__ ((format (printf, 2, 3))); extern int vsprintf(char *buf, const char *, va_list); extern int snprintf(char * buf, size_t size, const char * fmt, ...) __attribute__ ((format (printf, 3, 4))); extern int vsnprintf(char *buf, size_t size, const char *fmt, va_list args); extern int sscanf(const char *, const char *, ...) __attribute__ ((format (scanf,2,3))); extern int vsscanf(const char *, const char *, va_list); extern int get_option(char **str, int *pint); extern char *get_options(char *str, int nints, int *ints); extern unsigned long long memparse(char *ptr, char **retptr); extern void dev_probe_lock(void); extern void dev_probe_unlock(void); extern int session_of_pgrp(int pgrp); asmlinkage int printk(const char * fmt, ...) __attribute__ ((format (printf, 1, 2))); extern int console_loglevel; static inline void console_silent(void) { console_loglevel = 0; } static inline void console_verbose(void) { if (console_loglevel) console_loglevel = 15; } extern void bust_spinlocks(int yes); extern int oops_in_progress; /* If set, an oops, panic(), BUG() or die() is in progress */ extern int tainted; extern const char *print_tainted(void); #if DEBUG #define pr_debug(fmt,arg...) \ printk(KERN_DEBUG fmt,##arg) #else #define pr_debug(fmt,arg...) \ do { } while (0) #endif #define pr_info(fmt,arg...) \ printk(KERN_INFO fmt,##arg) /* * Display an IP address in readable format. */ #define NIPQUAD(addr) \ ((unsigned char *)&addr)[0], \ ((unsigned char *)&addr)[1], \ ((unsigned char *)&addr)[2], \ ((unsigned char *)&addr)[3] #define HIPQUAD(addr) \ ((unsigned char *)&addr)[3], \ ((unsigned char *)&addr)[2], \ ((unsigned char *)&addr)[1], \ ((unsigned char *)&addr)[0] /* * min()/max() macros that also do * strict type-checking.. See the * "unnecessary" pointer comparison. */ #define min(x,y) ({ \ const typeof(x) _x = (x); \ const typeof(y) _y = (y); \ (void) (&_x == &_y); \ _x < _y ? _x : _y; }) #define max(x,y) ({ \ const typeof(x) _x = (x); \ const typeof(y) _y = (y); \ (void) (&_x == &_y); \ _x > _y ? _x : _y; }) /* * ..and if you can't take the strict * types, you can specify one yourself. * * Or not use min/max at all, of course. */ #define min_t(type,x,y) \ ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; }) #define max_t(type,x,y) \ ({ type __x = (x); type __y = (y); __x > __y ? __x: __y; }) #endif /* __KERNEL__ */ #define SI_LOAD_SHIFT 16 struct sysinfo { long uptime; /* Seconds since boot */ unsigned long loads[3]; /* 1, 5, and 15 minute load averages */ unsigned long totalram; /* Total usable main memory size */ unsigned long freeram; /* Available memory size */ unsigned long sharedram; /* Amount of shared memory */ unsigned long bufferram; /* Memory used by buffers */ unsigned long totalswap; /* Total swap space size */ unsigned long freeswap; /* swap space still available */ unsigned short procs; /* Number of current processes */ unsigned short pad; /* explicit padding for m68k */ unsigned long totalhigh; /* Total high memory size */ unsigned long freehigh; /* Available high memory size */ unsigned int mem_unit; /* Memory unit size in bytes */ char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */ }; #endif |