Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef KERNEL_H
3#define KERNEL_H
4#include <stdbool.h>
5#include <stdlib.h>
6#include <stddef.h>
7#include <stdio.h>
8#include <string.h>
9#include <assert.h>
10#include <stdarg.h>
11
12#include <linux/compiler.h>
13#include "../../../include/linux/container_of.h"
14#include <linux/log2.h>
15#include <linux/types.h>
16#include <linux/overflow.h>
17#include <linux/limits.h>
18#include <linux/list.h>
19#include <linux/printk.h>
20#include <linux/bug.h>
21#include <errno.h>
22#include <unistd.h>
23#include <asm/barrier.h>
24
25#define CONFIG_SMP
26
27#define PAGE_SIZE getpagesize()
28#define PAGE_MASK (~(PAGE_SIZE-1))
29#define PAGE_ALIGN(x) ((x + PAGE_SIZE - 1) & PAGE_MASK)
30
31/* generic data direction definitions */
32#define READ 0
33#define WRITE 1
34
35typedef unsigned long long dma_addr_t;
36typedef size_t __kernel_size_t;
37typedef unsigned int __wsum;
38
39struct page {
40 unsigned long long dummy;
41};
42
43/* Physical == Virtual */
44#define virt_to_phys(p) ((unsigned long)p)
45#define phys_to_virt(a) ((void *)(unsigned long)(a))
46/* Page address: Virtual / 4K */
47#define page_to_phys(p) ((dma_addr_t)(unsigned long)(p))
48#define virt_to_page(p) ((struct page *)((unsigned long)p & PAGE_MASK))
49
50#define offset_in_page(p) (((unsigned long)p) % PAGE_SIZE)
51
52#define __printf(a,b) __attribute__((format(printf,a,b)))
53
54#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
55
56extern void *__kmalloc_fake, *__kfree_ignore_start, *__kfree_ignore_end;
57static inline void *kmalloc(size_t s, gfp_t gfp)
58{
59 if (__kmalloc_fake)
60 return __kmalloc_fake;
61 return malloc(s);
62}
63static inline void *kmalloc_array(unsigned n, size_t s, gfp_t gfp)
64{
65 return kmalloc(n * s, gfp);
66}
67
68static inline void *kzalloc(size_t s, gfp_t gfp)
69{
70 void *p = kmalloc(s, gfp);
71
72 memset(p, 0, s);
73 return p;
74}
75
76static inline void *alloc_pages_exact(size_t s, gfp_t gfp)
77{
78 return kmalloc(s, gfp);
79}
80
81static inline void kfree(void *p)
82{
83 if (p >= __kfree_ignore_start && p < __kfree_ignore_end)
84 return;
85 free(p);
86}
87
88static inline void free_pages_exact(void *p, size_t s)
89{
90 kfree(p);
91}
92
93static inline void *krealloc(void *p, size_t s, gfp_t gfp)
94{
95 return realloc(p, s);
96}
97
98
99static inline unsigned long __get_free_page(gfp_t gfp)
100{
101 void *p;
102
103 posix_memalign(&p, PAGE_SIZE, PAGE_SIZE);
104 return (unsigned long)p;
105}
106
107static inline void free_page(unsigned long addr)
108{
109 free((void *)addr);
110}
111
112# ifndef likely
113# define likely(x) (__builtin_expect(!!(x), 1))
114# endif
115# ifndef unlikely
116# define unlikely(x) (__builtin_expect(!!(x), 0))
117# endif
118
119static inline void *krealloc_array(void *p, size_t new_n, size_t new_size, gfp_t gfp)
120{
121 size_t bytes;
122
123 if (unlikely(check_mul_overflow(new_n, new_size, &bytes)))
124 return NULL;
125
126 return krealloc(p, bytes, gfp);
127}
128
129#define pr_err(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
130#ifdef DEBUG
131#define pr_debug(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
132#else
133#define pr_debug(format, ...) do {} while (0)
134#endif
135#define dev_err(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
136#define dev_warn(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
137#define dev_warn_once(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
138
139#define dev_WARN_ONCE(dev, condition, format...) \
140 WARN_ONCE(condition, format)
141
142static inline bool is_vmalloc_addr(const void *x)
143{
144 return false;
145}
146
147#define might_sleep() do { } while (0)
148
149static inline void synchronize_rcu(void)
150{
151 assert(0);
152}
153
154#define min(x, y) ({ \
155 typeof(x) _min1 = (x); \
156 typeof(y) _min2 = (y); \
157 (void) (&_min1 == &_min2); \
158 _min1 < _min2 ? _min1 : _min2; })
159
160#endif /* KERNEL_H */