LXR linux/tools/virtio/linux/kernel.h

   1#ifndef KERNEL_H
   2#define KERNEL_H
   3#include <stdbool.h>
   4#include <stdlib.h>
   5#include <stddef.h>
   6#include <stdio.h>
   7#include <string.h>
   8#include <assert.h>
   9#include <stdarg.h>
  10
  11#include <linux/types.h>
  12#include <linux/printk.h>
  13#include <linux/bug.h>
  14#include <errno.h>
  15#include <unistd.h>
  16#include <asm/barrier.h>
  17
  18#define CONFIG_SMP
  19
  20#define PAGE_SIZE getpagesize()
  21#define PAGE_MASK (~(PAGE_SIZE-1))
  22
  23typedef unsigned long long dma_addr_t;
  24typedef size_t __kernel_size_t;
  25typedef unsigned int __wsum;
  26
  27struct page {
  28        unsigned long long dummy;
  29};
  30
  31/* Physical == Virtual */
  32#define virt_to_phys(p) ((unsigned long)p)
  33#define phys_to_virt(a) ((void *)(unsigned long)(a))
  34/* Page address: Virtual / 4K */
  35#define page_to_phys(p) ((dma_addr_t)(unsigned long)(p))
  36#define virt_to_page(p) ((struct page *)((unsigned long)p & PAGE_MASK))
  37
  38#define offset_in_page(p) (((unsigned long)p) % PAGE_SIZE)
  39
  40#define __printf(a,b) __attribute__((format(printf,a,b)))
  41
  42#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
  43
  44extern void *__kmalloc_fake, *__kfree_ignore_start, *__kfree_ignore_end;
  45static inline void *kmalloc(size_t s, gfp_t gfp)
  46{
  47        if (__kmalloc_fake)
  48                return __kmalloc_fake;
  49        return malloc(s);
  50}
  51static inline void *kzalloc(size_t s, gfp_t gfp)
  52{
  53        void *p = kmalloc(s, gfp);
  54
  55        memset(p, 0, s);
  56        return p;
  57}
  58
  59static inline void kfree(void *p)
  60{
  61        if (p >= __kfree_ignore_start && p < __kfree_ignore_end)
  62                return;
  63        free(p);
  64}
  65
  66static inline void *krealloc(void *p, size_t s, gfp_t gfp)
  67{
  68        return realloc(p, s);
  69}
  70
  71
  72static inline unsigned long __get_free_page(gfp_t gfp)
  73{
  74        void *p;
  75
  76        posix_memalign(&p, PAGE_SIZE, PAGE_SIZE);
  77        return (unsigned long)p;
  78}
  79
  80static inline void free_page(unsigned long addr)
  81{
  82        free((void *)addr);
  83}
  84
  85#define container_of(ptr, type, member) ({                      \
  86        const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
  87        (type *)( (char *)__mptr - offsetof(type,member) );})
  88
  89#define uninitialized_var(x) x = x
  90
  91# ifndef likely
  92#  define likely(x)     (__builtin_expect(!!(x), 1))
  93# endif
  94# ifndef unlikely
  95#  define unlikely(x)   (__builtin_expect(!!(x), 0))
  96# endif
  97
  98#define pr_err(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
  99#ifdef DEBUG
 100#define pr_debug(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
 101#else
 102#define pr_debug(format, ...) do {} while (0)
 103#endif
 104#define dev_err(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
 105#define dev_warn(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
 106
 107#define min(x, y) ({                            \
 108        typeof(x) _min1 = (x);                  \
 109        typeof(y) _min2 = (y);                  \
 110        (void) (&_min1 == &_min2);              \
 111        _min1 < _min2 ? _min1 : _min2; })
 112
 113#endif /* KERNEL_H */
 114