1
2 #ifndef __TOOLS_LINUX_KERNEL_H
3 #define __TOOLS_LINUX_KERNEL_H
4
5 #include <stdarg.h>
6 #include <stddef.h>
7 #include <assert.h>
8 #include <linux/compiler.h>
9 #include <endian.h>
10 #include <byteswap.h>
11
12 #ifndef UINT_MAX
13 #define UINT_MAX (~0U)
14 #endif
15
16 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
17
18 #define PERF_ALIGN(x, a) __PERF_ALIGN_MASK(x, (typeof(x))(a)-1)
19 #define __PERF_ALIGN_MASK(x, mask) (((x)+(mask))&~(mask))
20
21 #ifndef offsetof
22 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
23 #endif
24
25 #ifndef container_of
26
27
28
29
30
31
32
33 #define container_of(ptr, type, member) ({ \
34 const typeof(((type *)0)->member) * __mptr = (ptr); \
35 (type *)((char *)__mptr - offsetof(type, member)); })
36 #endif
37
38 #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
39 #define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))
40
41 #ifndef max
42 #define max(x, y) ({ \
43 typeof(x) _max1 = (x); \
44 typeof(y) _max2 = (y); \
45 (void) (&_max1 == &_max2); \
46 _max1 > _max2 ? _max1 : _max2; })
47 #endif
48
49 #ifndef min
50 #define min(x, y) ({ \
51 typeof(x) _min1 = (x); \
52 typeof(y) _min2 = (y); \
53 (void) (&_min1 == &_min2); \
54 _min1 < _min2 ? _min1 : _min2; })
55 #endif
56
57 #ifndef roundup
58 #define roundup(x, y) ( \
59 { \
60 const typeof(y) __y = y; \
61 (((x) + (__y - 1)) / __y) * __y; \
62 } \
63 )
64 #endif
65
66 #ifndef BUG_ON
67 #ifdef NDEBUG
68 #define BUG_ON(cond) do { if (cond) {} } while (0)
69 #else
70 #define BUG_ON(cond) assert(!(cond))
71 #endif
72 #endif
73 #define BUG() BUG_ON(1)
74
75 #if __BYTE_ORDER == __BIG_ENDIAN
76 #define cpu_to_le16 bswap_16
77 #define cpu_to_le32 bswap_32
78 #define cpu_to_le64 bswap_64
79 #define le16_to_cpu bswap_16
80 #define le32_to_cpu bswap_32
81 #define le64_to_cpu bswap_64
82 #define cpu_to_be16
83 #define cpu_to_be32
84 #define cpu_to_be64
85 #define be16_to_cpu
86 #define be32_to_cpu
87 #define be64_to_cpu
88 #else
89 #define cpu_to_le16
90 #define cpu_to_le32
91 #define cpu_to_le64
92 #define le16_to_cpu
93 #define le32_to_cpu
94 #define le64_to_cpu
95 #define cpu_to_be16 bswap_16
96 #define cpu_to_be32 bswap_32
97 #define cpu_to_be64 bswap_64
98 #define be16_to_cpu bswap_16
99 #define be32_to_cpu bswap_32
100 #define be64_to_cpu bswap_64
101 #endif
102
103 int vscnprintf(char *buf, size_t size, const char *fmt, va_list args);
104 int scnprintf(char * buf, size_t size, const char * fmt, ...);
105 int scnprintf_pad(char * buf, size_t size, const char * fmt, ...);
106
107 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
108
109
110
111
112
113
114
115 #define __round_mask(x, y) ((__typeof__(x))((y)-1))
116 #define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)
117 #define round_down(x, y) ((x) & ~__round_mask(x, y))
118
119 #define current_gfp_context(k) 0
120 #define synchronize_rcu()
121
122 #endif