LXR linux/tools/testing/scatterlist/linux/mm.h

   1#ifndef _LINUX_MM_H
   2#define _LINUX_MM_H
   3
   4#include <assert.h>
   5#include <string.h>
   6#include <stdlib.h>
   7#include <errno.h>
   8#include <limits.h>
   9#include <stdio.h>
  10
  11typedef unsigned long dma_addr_t;
  12
  13#define unlikely
  14
  15#define BUG_ON(x) assert(!(x))
  16
  17#define WARN_ON(condition) ({                                           \
  18        int __ret_warn_on = !!(condition);                              \
  19        unlikely(__ret_warn_on);                                        \
  20})
  21
  22#define WARN_ON_ONCE(condition) ({                              \
  23        int __ret_warn_on = !!(condition);                      \
  24        if (unlikely(__ret_warn_on))                            \
  25                assert(0);                                      \
  26        unlikely(__ret_warn_on);                                \
  27})
  28
  29#define PAGE_SIZE       (4096)
  30#define PAGE_SHIFT      (12)
  31#define PAGE_MASK       (~(PAGE_SIZE-1))
  32
  33#define __ALIGN_KERNEL(x, a)            __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
  34#define __ALIGN_KERNEL_MASK(x, mask)    (((x) + (mask)) & ~(mask))
  35#define ALIGN(x, a)                     __ALIGN_KERNEL((x), (a))
  36#define ALIGN_DOWN(x, a)                __ALIGN_KERNEL((x) - ((a) - 1), (a))
  37
  38#define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE)
  39
  40#define offset_in_page(p)       ((unsigned long)(p) & ~PAGE_MASK)
  41
  42#define virt_to_page(x) ((void *)x)
  43#define page_address(x) ((void *)x)
  44
  45static inline unsigned long page_to_phys(struct page *page)
  46{
  47        assert(0);
  48
  49        return 0;
  50}
  51
  52#define page_to_pfn(page) ((unsigned long)(page) / PAGE_SIZE)
  53#define pfn_to_page(pfn) (void *)((pfn) * PAGE_SIZE)
  54#define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n))
  55
  56#define __min(t1, t2, min1, min2, x, y) ({              \
  57        t1 min1 = (x);                                  \
  58        t2 min2 = (y);                                  \
  59        (void) (&min1 == &min2);                        \
  60        min1 < min2 ? min1 : min2; })
  61
  62#define ___PASTE(a,b) a##b
  63#define __PASTE(a,b) ___PASTE(a,b)
  64
  65#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
  66
  67#define min(x, y)                                       \
  68        __min(typeof(x), typeof(y),                     \
  69              __UNIQUE_ID(min1_), __UNIQUE_ID(min2_),   \
  70              x, y)
  71
  72#define min_t(type, x, y)                               \
  73        __min(type, type,                               \
  74              __UNIQUE_ID(min1_), __UNIQUE_ID(min2_),   \
  75              x, y)
  76
  77#define preemptible() (1)
  78
  79static inline void *kmap(struct page *page)
  80{
  81        assert(0);
  82
  83        return NULL;
  84}
  85
  86static inline void *kmap_atomic(struct page *page)
  87{
  88        assert(0);
  89
  90        return NULL;
  91}
  92
  93static inline void kunmap(void *addr)
  94{
  95        assert(0);
  96}
  97
  98static inline void kunmap_atomic(void *addr)
  99{
 100        assert(0);
 101}
 102
 103static inline unsigned long __get_free_page(unsigned int flags)
 104{
 105        return (unsigned long)malloc(PAGE_SIZE);
 106}
 107
 108static inline void free_page(unsigned long page)
 109{
 110        free((void *)page);
 111}
 112
 113static inline void *kmalloc(unsigned int size, unsigned int flags)
 114{
 115        return malloc(size);
 116}
 117
 118static inline void *
 119kmalloc_array(unsigned int n, unsigned int size, unsigned int flags)
 120{
 121        return malloc(n * size);
 122}
 123
 124#define kfree(x) free(x)
 125
 126#define kmemleak_alloc(a, b, c, d)
 127#define kmemleak_free(a)
 128
 129#define PageSlab(p) (0)
 130
 131#define MAX_ERRNO       4095
 132
 133#define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO)
 134
 135static inline void * __must_check ERR_PTR(long error)
 136{
 137        return (void *) error;
 138}
 139
 140static inline long __must_check PTR_ERR(__force const void *ptr)
 141{
 142        return (long) ptr;
 143}
 144
 145static inline bool __must_check IS_ERR(__force const void *ptr)
 146{
 147        return IS_ERR_VALUE((unsigned long)ptr);
 148}
 149
 150static inline int __must_check PTR_ERR_OR_ZERO(__force const void *ptr)
 151{
 152        if (IS_ERR(ptr))
 153                return PTR_ERR(ptr);
 154        else
 155                return 0;
 156}
 157
 158#define IS_ENABLED(x) (0)
 159
 160#endif
 161