1 /* SPDX-License-Identifier: GPL-2.0 */
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/build_bug.h>
9 #include <linux/compiler.h>
10 #include <linux/math.h>
11 #include <linux/panic.h>
12 #include <endian.h>
13 #include <byteswap.h>
14
15 #ifndef UINT_MAX
16 #define UINT_MAX (~0U)
17 #endif
18
19 #define _RET_IP_ ((unsigned long)__builtin_return_address(0))
20
21 #define PERF_ALIGN(x, a) __PERF_ALIGN_MASK(x, (typeof(x))(a)-1)
22 #define __PERF_ALIGN_MASK(x, mask) (((x)+(mask))&~(mask))
23
24 #ifndef offsetof
25 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
26 #endif
27
28 #ifndef container_of
29 /**
30 * container_of - cast a member of a structure out to the containing structure
31 * @ptr: the pointer to the member.
32 * @type: the type of the container struct this is embedded in.
33 * @member: the name of the member within the struct.
34 *
35 */
36 #define container_of(ptr, type, member) ({ \
37 const typeof(((type *)0)->member) * __mptr = (ptr); \
38 (type *)((char *)__mptr - offsetof(type, member)); })
39 #endif
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 #define max_t(type, x, y) max((type)x, (type)y)
58 #define min_t(type, x, y) min((type)x, (type)y)
59 #define clamp(val, lo, hi) min((typeof(val))max(val, lo), hi)
60
61 #ifndef BUG_ON
62 #ifdef NDEBUG
63 #define BUG_ON(cond) do { if (cond) {} } while (0)
64 #else
65 #define BUG_ON(cond) assert(!(cond))
66 #endif
67 #endif
68 #define BUG() BUG_ON(1)
69
70 #if __BYTE_ORDER == __BIG_ENDIAN
71 #define cpu_to_le16 bswap_16
72 #define cpu_to_le32 bswap_32
73 #define cpu_to_le64 bswap_64
74 #define le16_to_cpu bswap_16
75 #define le32_to_cpu bswap_32
76 #define le64_to_cpu bswap_64
77 #define cpu_to_be16
78 #define cpu_to_be32
79 #define cpu_to_be64
80 #define be16_to_cpu
81 #define be32_to_cpu
82 #define be64_to_cpu
83 #else
84 #define cpu_to_le16
85 #define cpu_to_le32
86 #define cpu_to_le64
87 #define le16_to_cpu
88 #define le32_to_cpu
89 #define le64_to_cpu
90 #define cpu_to_be16 bswap_16
91 #define cpu_to_be32 bswap_32
92 #define cpu_to_be64 bswap_64
93 #define be16_to_cpu bswap_16
94 #define be32_to_cpu bswap_32
95 #define be64_to_cpu bswap_64
96 #endif
97
98 int vscnprintf(char *buf, size_t size, const char *fmt, va_list args);
99 int scnprintf(char * buf, size_t size, const char * fmt, ...);
100 int scnprintf_pad(char * buf, size_t size, const char * fmt, ...);
101
102 #ifndef ARRAY_SIZE
103 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
104 #endif
105
106 #define current_gfp_context(k) 0
107 #define synchronize_rcu()
108
109 #endif
110
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.