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c66d2821 PMF |
1 | #ifndef KERNELCOMPAT_H |
2 | #define KERNELCOMPAT_H | |
3 | ||
59b161cd PMF |
4 | #include "compiler.h" |
5 | ||
c66d2821 PMF |
6 | #include <string.h> |
7 | ||
8 | #define container_of(ptr, type, member) ({ \ | |
9 | const typeof( ((type *)0)->member ) *__mptr = (ptr); \ | |
10 | (type *)( (char *)__mptr - offsetof(type,member) );}) | |
11 | ||
b6bf28ec PMF |
12 | #define KERN_DEBUG "" |
13 | #define KERN_NOTICE "" | |
14 | #define KERN_INFO "" | |
15 | #define KERN_ERR "" | |
16 | #define KERN_ALERT "" | |
c66d2821 | 17 | |
59b161cd PMF |
18 | /* ERROR OPS */ |
19 | ||
20 | #define MAX_ERRNO 4095 | |
21 | ||
22 | #define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO) | |
23 | ||
c66d2821 PMF |
24 | static inline void *ERR_PTR(long error) |
25 | { | |
59b161cd | 26 | return (void *) error; |
c66d2821 PMF |
27 | } |
28 | ||
59b161cd PMF |
29 | static inline long PTR_ERR(const void *ptr) |
30 | { | |
31 | return (long) ptr; | |
32 | } | |
33 | ||
34 | static inline long IS_ERR(const void *ptr) | |
35 | { | |
36 | return IS_ERR_VALUE((unsigned long)ptr); | |
37 | } | |
38 | ||
39 | ||
40 | /* FIXED SIZE INTEGERS */ | |
c66d2821 PMF |
41 | |
42 | #include <stdint.h> | |
43 | ||
59b161cd | 44 | typedef uint8_t u8; |
c66d2821 PMF |
45 | typedef uint16_t u16; |
46 | typedef uint32_t u32; | |
59b161cd | 47 | typedef uint64_t u64; |
c66d2821 | 48 | |
b6bf28ec PMF |
49 | #define min_t(type, x, y) ({ \ |
50 | type __min1 = (x); \ | |
51 | type __min2 = (y); \ | |
52 | __min1 < __min2 ? __min1: __min2; }) | |
53 | ||
54 | #define max_t(type, x, y) ({ \ | |
55 | type __max1 = (x); \ | |
56 | type __max2 = (y); \ | |
57 | __max1 > __max2 ? __max1: __max2; }) | |
58 | ||
59 | ||
60 | /* MUTEXES */ | |
c66d2821 PMF |
61 | |
62 | #include <pthread.h> | |
63 | ||
64 | #define DEFINE_MUTEX(m) pthread_mutex_t (m) = PTHREAD_MUTEX_INITIALIZER; | |
65 | ||
66 | #define mutex_lock(m) pthread_mutex_lock(m) | |
67 | ||
68 | #define mutex_unlock(m) pthread_mutex_unlock(m) | |
69 | ||
b6bf28ec | 70 | /* MALLOCATION */ |
c66d2821 PMF |
71 | |
72 | #include <stdlib.h> | |
73 | ||
74 | #define kmalloc(s, t) malloc(s) | |
75 | #define kzalloc(s, t) malloc(s) | |
76 | #define kfree(p) free((void *)p) | |
77 | #define kstrdup(s, t) strdup(s) | |
78 | ||
b6bf28ec | 79 | /* PRINTK */ |
c66d2821 PMF |
80 | |
81 | #include <stdio.h> | |
82 | #define printk(fmt, args...) printf(fmt, ## args) | |
83 | ||
59b161cd PMF |
84 | /* MEMORY BARRIERS */ |
85 | ||
86 | #define smp_rmb() do {} while(0) | |
87 | #define smp_wmb() do {} while(0) | |
88 | #define smp_mb() do {} while(0) | |
89 | #define smp_mb__after_atomic_inc() do {} while(0) | |
90 | ||
91 | #define read_barrier_depends() do {} while(0) | |
92 | #define smp_read_barrier_depends() do {} while(0) | |
c66d2821 | 93 | |
59b161cd | 94 | /* RCU */ |
c66d2821 | 95 | |
59b161cd | 96 | #define rcu_assign_pointer(a, b) do {} while(0) |
b6bf28ec PMF |
97 | #define call_rcu_sched(a,b) do {} while(0) |
98 | #define rcu_barrier_sched() do {} while(0) | |
c66d2821 | 99 | |
59b161cd | 100 | /* ATOMICITY */ |
b6bf28ec | 101 | |
59b161cd PMF |
102 | #include <signal.h> |
103 | ||
104 | typedef struct { sig_atomic_t counter; } atomic_t; | |
105 | ||
106 | static inline int atomic_dec_and_test(atomic_t *p) | |
107 | { | |
108 | (p->counter)--; | |
109 | return !p->counter; | |
110 | } | |
111 | ||
112 | static inline void atomic_set(atomic_t *p, int v) | |
113 | { | |
114 | p->counter=v; | |
115 | } | |
116 | ||
117 | static inline void atomic_inc(atomic_t *p) | |
118 | { | |
119 | p->counter++; | |
120 | } | |
121 | ||
122 | static int atomic_read(atomic_t *p) | |
123 | { | |
124 | return p->counter; | |
125 | } | |
c66d2821 | 126 | |
59b161cd | 127 | /* CACHE */ |
b6bf28ec | 128 | |
59b161cd | 129 | #define ____cacheline_aligned |
c66d2821 | 130 | |
b6bf28ec PMF |
131 | /* MATH */ |
132 | ||
133 | static inline unsigned int hweight32(unsigned int w) | |
134 | { | |
135 | unsigned int res = w - ((w >> 1) & 0x55555555); | |
136 | res = (res & 0x33333333) + ((res >> 2) & 0x33333333); | |
137 | res = (res + (res >> 4)) & 0x0F0F0F0F; | |
138 | res = res + (res >> 8); | |
139 | return (res + (res >> 16)) & 0x000000FF; | |
140 | } | |
141 | ||
142 | static inline int fls(int x) | |
143 | { | |
144 | int r; | |
145 | //ust// #ifdef CONFIG_X86_CMOV | |
146 | asm("bsrl %1,%0\n\t" | |
147 | "cmovzl %2,%0" | |
148 | : "=&r" (r) : "rm" (x), "rm" (-1)); | |
149 | //ust// #else | |
150 | //ust// asm("bsrl %1,%0\n\t" | |
151 | //ust// "jnz 1f\n\t" | |
152 | //ust// "movl $-1,%0\n" | |
153 | //ust// "1:" : "=r" (r) : "rm" (x)); | |
154 | //ust// #endif | |
155 | return r + 1; | |
156 | } | |
157 | ||
158 | static __inline__ int get_count_order(unsigned int count) | |
159 | { | |
160 | int order; | |
161 | ||
162 | order = fls(count) - 1; | |
163 | if (count & (count - 1)) | |
164 | order++; | |
165 | return order; | |
166 | } | |
167 | ||
168 | ||
169 | /* ARRAYS */ | |
170 | ||
171 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) | |
172 | ||
173 | /* TRACE CLOCK */ | |
174 | ||
175 | static inline u64 trace_clock_read64(void) | |
176 | { | |
177 | return 0LL; | |
178 | } | |
179 | ||
180 | static inline unsigned int trace_clock_frequency(void) | |
181 | { | |
182 | return 0LL; | |
183 | } | |
184 | ||
185 | static inline u32 trace_clock_freq_scale(void) | |
186 | { | |
187 | return 0; | |
188 | } | |
189 | ||
c66d2821 | 190 | #endif /* KERNELCOMPAT_H */ |