#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>
#include <linux/compiler.h>
#include <asm/byteorder.h>
#include <asm/bug.h>

#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 ALIGN(x,a) (((x)+(a)-1)&~((a)-1))

#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                 */

extern int console_printk[];

#define console_loglevel (console_printk[0])
#define default_message_loglevel (console_printk[1])
#define minimum_console_loglevel (console_printk[2])
#define default_console_loglevel (console_printk[3])

struct completion;

#ifdef CONFIG_DEBUG_SPINLOCK_SLEEP
void __might_sleep(char *file, int line);
#define might_sleep() __might_sleep(__FILE__, __LINE__)
#define might_sleep_if(cond) do { if (unlikely(cond)) might_sleep(); } while (0)
#else
#define might_sleep() do {} while(0)
#define might_sleep_if(cond) do {} while (0)
#endif

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(const char *str, int nints, int *ints);
extern unsigned long long memparse(char *ptr, char **retptr);

extern int kernel_text_address(unsigned long addr);
extern int session_of_pgrp(int pgrp);

asmlinkage int printk(const char * fmt, ...)
        __attribute__ ((format (printf, 1, 2)));

unsigned long int_sqrt(unsigned long);

extern int printk_ratelimit(void);

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 panic_on_oops;
extern int system_running;
extern int tainted;
extern const char *print_tainted(void);
#define TAINT_PROPRIETARY_MODULE        (1<<0)
#define TAINT_FORCED_MODULE             (1<<1)
#define TAINT_UNSAFE_SMP                (1<<2)
#define TAINT_FORCED_RMMOD              (1<<3)

extern void dump_stack(void);

#ifdef 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 NIP6(addr) \
        ntohs((addr).s6_addr16[0]), \
        ntohs((addr).s6_addr16[1]), \
        ntohs((addr).s6_addr16[2]), \
        ntohs((addr).s6_addr16[3]), \
        ntohs((addr).s6_addr16[4]), \
        ntohs((addr).s6_addr16[5]), \
        ntohs((addr).s6_addr16[6]), \
        ntohs((addr).s6_addr16[7])

#if defined(__LITTLE_ENDIAN)
#define HIPQUAD(addr) \
        ((unsigned char *)&addr)[3], \
        ((unsigned char *)&addr)[2], \
        ((unsigned char *)&addr)[1], \
        ((unsigned char *)&addr)[0]
#elif defined(__BIG_ENDIAN)
#define HIPQUAD NIPQUAD
#else
#error "Please fix asm/byteorder.h"
#endif /* __LITTLE_ENDIAN */

/*
 * 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; })


/**
 * container_of - cast a member of a structure out to the containing structure
 *
 * @ptr:        the pointer to the member.
 * @type:       the type of the container struct this is embedded in.
 * @member:     the name of the member within the struct.
 *
 */
#define container_of(ptr, type, member) ({                      \
        const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
        (type *)( (char *)__mptr - offsetof(type,member) );})

/*
 * Check at compile time that something is of a particular type.
 * Always evaluates to 1 so you may use it easily in comparisons.
 */
#define typecheck(type,x) \
({      type __dummy; \
        typeof(x) __dummy2; \
        (void)(&__dummy == &__dummy2); \
        1; \
})

#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.. */
};

extern void BUILD_BUG(void);
#define BUILD_BUG_ON(condition) do { if (condition) BUILD_BUG(); } while(0)

/* Trap pasters of __FUNCTION__ at compile-time */
#if __GNUC__ > 2 || __GNUC_MINOR__ >= 95
#define __FUNCTION__ (__func__)
#endif

#endif