LXR linux-old/include/linux/kernel.h

   1#ifndef _LINUX_KERNEL_H
   2#define _LINUX_KERNEL_H
   3
   4/*
   5 * 'kernel.h' contains some often-used function prototypes etc
   6 */
   7
   8#ifdef __KERNEL__
   9
  10#include <stdarg.h>
  11#include <linux/linkage.h>
  12
  13/* Optimization barrier */
  14/* The "volatile" is due to gcc bugs */
  15#define barrier() __asm__ __volatile__("": : :"memory")
  16
  17#define INT_MAX         ((int)(~0U>>1))
  18#define UINT_MAX        (~0U)
  19#define LONG_MAX        ((long)(~0UL>>1))
  20#define ULONG_MAX       (~0UL)
  21
  22#define STACK_MAGIC     0xdeadbeef
  23
  24#define KERN_EMERG      "<0>"   /* system is unusable                   */
  25#define KERN_ALERT      "<1>"   /* action must be taken immediately     */
  26#define KERN_CRIT       "<2>"   /* critical conditions                  */
  27#define KERN_ERR        "<3>"   /* error conditions                     */
  28#define KERN_WARNING    "<4>"   /* warning conditions                   */
  29#define KERN_NOTICE     "<5>"   /* normal but significant condition     */
  30#define KERN_INFO       "<6>"   /* informational                        */
  31#define KERN_DEBUG      "<7>"   /* debug-level messages                 */
  32
  33# define NORET_TYPE    /**/
  34# define ATTRIB_NORET  __attribute__((noreturn))
  35# define NORET_AND     noreturn,
  36
  37#ifdef __i386__
  38#define FASTCALL(x)     x __attribute__((regparm(3)))
  39#else
  40#define FASTCALL(x)     x
  41#endif
  42
  43extern void math_error(void);
  44NORET_TYPE void panic(const char * fmt, ...)
  45        __attribute__ ((NORET_AND format (printf, 1, 2)));
  46NORET_TYPE void do_exit(long error_code)
  47        ATTRIB_NORET;
  48extern unsigned long simple_strtoul(const char *,char **,unsigned int);
  49extern long simple_strtol(const char *,char **,unsigned int);
  50extern int sprintf(char * buf, const char * fmt, ...);
  51extern int vsprintf(char *buf, const char *, va_list);
  52
  53extern int session_of_pgrp(int pgrp);
  54
  55asmlinkage int printk(const char * fmt, ...)
  56        __attribute__ ((format (printf, 1, 2)));
  57
  58#if DEBUG
  59#define pr_debug(fmt,arg...) \
  60        printk(KERN_DEBUG fmt,##arg)
  61#else
  62#define pr_debug(fmt,arg...) \
  63        do { } while (0)
  64#endif
  65
  66#define pr_info(fmt,arg...) \
  67        printk(KERN_INFO fmt,##arg)
  68
  69/*
  70 *      Display an IP address in readable format.
  71 */
  72
  73#define NIPQUAD(addr) \
  74        ((unsigned char *)&addr)[0], \
  75        ((unsigned char *)&addr)[1], \
  76        ((unsigned char *)&addr)[2], \
  77        ((unsigned char *)&addr)[3]
  78
  79#endif /* __KERNEL__ */
  80
  81#define SI_LOAD_SHIFT   16
  82struct sysinfo {
  83        long uptime;                    /* Seconds since boot */
  84        unsigned long loads[3];         /* 1, 5, and 15 minute load averages */
  85        unsigned long totalram;         /* Total usable main memory size */
  86        unsigned long freeram;          /* Available memory size */
  87        unsigned long sharedram;        /* Amount of shared memory */
  88        unsigned long bufferram;        /* Memory used by buffers */
  89        unsigned long totalswap;        /* Total swap space size */
  90        unsigned long freeswap;         /* swap space still available */
  91        unsigned short procs;           /* Number of current processes */
  92        char _f[22];                    /* Pads structure to 64 bytes */
  93};
  94
  95#endif
  96