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
98int vscnprintf(char *buf, size_t size, const char *fmt, va_list args);
99int scnprintf(char * buf, size_t size, const char * fmt, ...);
100int 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