Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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;
25
26struct page {
27 unsigned long long dummy;
28};
29
30/* Physical == Virtual */
31#define virt_to_phys(p) ((unsigned long)p)
32#define phys_to_virt(a) ((void *)(unsigned long)(a))
33/* Page address: Virtual / 4K */
34#define page_to_phys(p) ((dma_addr_t)(unsigned long)(p))
35#define virt_to_page(p) ((struct page *)((unsigned long)p & PAGE_MASK))
36
37#define offset_in_page(p) (((unsigned long)p) % PAGE_SIZE)
38
39#define __printf(a,b) __attribute__((format(printf,a,b)))
40
41typedef enum {
42 GFP_KERNEL,
43 GFP_ATOMIC,
44 __GFP_HIGHMEM,
45 __GFP_HIGH
46} gfp_t;
47
48#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
49
50extern void *__kmalloc_fake, *__kfree_ignore_start, *__kfree_ignore_end;
51static inline void *kmalloc(size_t s, gfp_t gfp)
52{
53 if (__kmalloc_fake)
54 return __kmalloc_fake;
55 return malloc(s);
56}
57
58static inline void kfree(void *p)
59{
60 if (p >= __kfree_ignore_start && p < __kfree_ignore_end)
61 return;
62 free(p);
63}
64
65static inline void *krealloc(void *p, size_t s, gfp_t gfp)
66{
67 return realloc(p, s);
68}
69
70
71static inline unsigned long __get_free_page(gfp_t gfp)
72{
73 void *p;
74
75 posix_memalign(&p, PAGE_SIZE, PAGE_SIZE);
76 return (unsigned long)p;
77}
78
79static inline void free_page(unsigned long addr)
80{
81 free((void *)addr);
82}
83
84#define container_of(ptr, type, member) ({ \
85 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
86 (type *)( (char *)__mptr - offsetof(type,member) );})
87
88#define uninitialized_var(x) x = x
89
90# ifndef likely
91# define likely(x) (__builtin_expect(!!(x), 1))
92# endif
93# ifndef unlikely
94# define unlikely(x) (__builtin_expect(!!(x), 0))
95# endif
96
97#define pr_err(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
98#ifdef DEBUG
99#define pr_debug(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
100#else
101#define pr_debug(format, ...) do {} while (0)
102#endif
103#define dev_err(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
104#define dev_warn(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
105
106#define min(x, y) ({ \
107 typeof(x) _min1 = (x); \
108 typeof(y) _min2 = (y); \
109 (void) (&_min1 == &_min2); \
110 _min1 < _min2 ? _min1 : _min2; })
111
112#endif /* KERNEL_H */