mm.h (3697B)
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 pagefault_disabled() (0) 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#define flush_dcache_page(p) 131 132#define MAX_ERRNO 4095 133 134#define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) 135 136static inline void * __must_check ERR_PTR(long error) 137{ 138 return (void *) error; 139} 140 141static inline long __must_check PTR_ERR(__force const void *ptr) 142{ 143 return (long) ptr; 144} 145 146static inline bool __must_check IS_ERR(__force const void *ptr) 147{ 148 return IS_ERR_VALUE((unsigned long)ptr); 149} 150 151static inline int __must_check PTR_ERR_OR_ZERO(__force const void *ptr) 152{ 153 if (IS_ERR(ptr)) 154 return PTR_ERR(ptr); 155 else 156 return 0; 157} 158 159#define IS_ENABLED(x) (0) 160 161#endif