aboutsummaryrefslogtreecommitdiff
path: root/sys/compat/linuxkpi/common/include/linux/kernel.h
blob: bfc3b7d7b6b0cf7a222aedea2d005d7b7d0e6976 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
/*-
 * Copyright (c) 2010 Isilon Systems, Inc.
 * Copyright (c) 2010 iX Systems, Inc.
 * Copyright (c) 2010 Panasas, Inc.
 * Copyright (c) 2013-2015 Mellanox Technologies, Ltd.
 * Copyright (c) 2014-2015 François Tigeot
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice unmodified, this list of conditions, and the following
 *    disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * $FreeBSD$
 */
#ifndef	_LINUX_KERNEL_H_
#define	_LINUX_KERNEL_H_

#include <sys/cdefs.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/param.h>
#include <sys/libkern.h>
#include <sys/stat.h>
#include <sys/smp.h>
#include <sys/stddef.h>
#include <sys/syslog.h>

#include <linux/bitops.h>
#include <linux/compiler.h>
#include <linux/errno.h>
#include <linux/kthread.h>
#include <linux/types.h>
#include <linux/jiffies.h>
#include <linux/wait.h>
#include <linux/log2.h> 
#include <asm/byteorder.h>

#define KERN_CONT       ""
#define	KERN_EMERG	"<0>"
#define	KERN_ALERT	"<1>"
#define	KERN_CRIT	"<2>"
#define	KERN_ERR	"<3>"
#define	KERN_WARNING	"<4>"
#define	KERN_NOTICE	"<5>"
#define	KERN_INFO	"<6>"
#define	KERN_DEBUG	"<7>"

#define	BUILD_BUG_ON(x)		CTASSERT(!(x))

#define BUG()			panic("BUG")
#define BUG_ON(condition)	do { if (condition) BUG(); } while(0)
#define	WARN_ON			BUG_ON

#undef	ALIGN
#define	ALIGN(x, y)		roundup2((x), (y))
#undef PTR_ALIGN
#define	PTR_ALIGN(p, a)		((__typeof(p))ALIGN((uintptr_t)(p), (a)))
#define	DIV_ROUND_UP(x, n)	howmany(x, n)
#define	DIV_ROUND_UP_ULL(x, n)	DIV_ROUND_UP((unsigned long long)(x), (n))
#define	FIELD_SIZEOF(t, f)	sizeof(((t *)0)->f)

#define	printk(X...)		printf(X)

/*
 * The "pr_debug()" and "pr_devel()" macros should produce zero code
 * unless DEBUG is defined:
 */
#ifdef DEBUG
#define pr_debug(fmt, ...) \
        log(LOG_DEBUG, fmt, ##__VA_ARGS__)
#define pr_devel(fmt, ...) \
	log(LOG_DEBUG, pr_fmt(fmt), ##__VA_ARGS__)
#else
#define pr_debug(fmt, ...) \
        ({ if (0) log(LOG_DEBUG, fmt, ##__VA_ARGS__); 0; })
#define pr_devel(fmt, ...) \
	({ if (0) log(LOG_DEBUG, pr_fmt(fmt), ##__VA_ARGS__); 0; })
#endif

#ifndef pr_fmt
#define pr_fmt(fmt) fmt
#endif

/*
 * Print a one-time message (analogous to WARN_ONCE() et al):
 */
#define printk_once(...) do {			\
	static bool __print_once;		\
						\
	if (!__print_once) {			\
		__print_once = true;		\
		printk(__VA_ARGS__);		\
	}					\
} while (0)

/*
 * Log a one-time message (analogous to WARN_ONCE() et al):
 */
#define log_once(level,...) do {		\
	static bool __log_once;			\
						\
	if (!__log_once) {			\
		__log_once = true;		\
		log(level, __VA_ARGS__);	\
	}					\
} while (0)

#define pr_emerg(fmt, ...) \
	log(LOG_EMERG, pr_fmt(fmt), ##__VA_ARGS__)
#define pr_alert(fmt, ...) \
	log(LOG_ALERT, pr_fmt(fmt), ##__VA_ARGS__)
#define pr_crit(fmt, ...) \
	log(LOG_CRIT, pr_fmt(fmt), ##__VA_ARGS__)
#define pr_err(fmt, ...) \
	log(LOG_ERR, pr_fmt(fmt), ##__VA_ARGS__)
#define pr_warning(fmt, ...) \
	log(LOG_WARNING, pr_fmt(fmt), ##__VA_ARGS__)
#define pr_warn pr_warning
#define pr_notice(fmt, ...) \
	log(LOG_NOTICE, pr_fmt(fmt), ##__VA_ARGS__)
#define pr_info(fmt, ...) \
	log(LOG_INFO, pr_fmt(fmt), ##__VA_ARGS__)
#define pr_info_once(fmt, ...) \
	log_once(LOG_INFO, pr_fmt(fmt), ##__VA_ARGS__)
#define pr_cont(fmt, ...) \
	printk(KERN_CONT fmt, ##__VA_ARGS__)

#ifndef WARN
#define WARN(condition, format...) ({                                   \
        int __ret_warn_on = !!(condition);                              \
        if (unlikely(__ret_warn_on))                                    \
                pr_warning(format);                                     \
        unlikely(__ret_warn_on);                                        \
})
#endif

#define container_of(ptr, type, member)				\
({								\
	__typeof(((type *)0)->member) *_p = (ptr);		\
	(type *)((char *)_p - offsetof(type, member));		\
})
  
#define	ARRAY_SIZE(x)	(sizeof(x) / sizeof((x)[0]))

#define	simple_strtoul	strtoul
#define	simple_strtol	strtol
#define kstrtol(a,b,c) ({*(c) = strtol(a,0,b);})

#define min(x, y)	((x) < (y) ? (x) : (y))
#define max(x, y)	((x) > (y) ? (x) : (y))

#define min3(a, b, c)	min(a, min(b,c))
#define max3(a, b, c)	max(a, max(b,c))

#define min_t(type, _x, _y)	((type)(_x) < (type)(_y) ? (type)(_x) : (type)(_y))
#define max_t(type, _x, _y)	((type)(_x) > (type)(_y) ? (type)(_x) : (type)(_y))

#define clamp_t(type, _x, min, max)	min_t(type, max_t(type, _x, min), max)
#define clamp(x, lo, hi)		min( max(x,lo), hi)

/*
 * This looks more complex than it should be. But we need to
 * get the type for the ~ right in round_down (it needs to be
 * as wide as the result!), and we want to evaluate the macro
 * arguments just once each.
 */
#define __round_mask(x, y) ((__typeof__(x))((y)-1))
#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)
#define round_down(x, y) ((x) & ~__round_mask(x, y))

#define	num_possible_cpus()	mp_ncpus
#define	num_online_cpus()	mp_ncpus

typedef struct pm_message {
        int event;
} pm_message_t;

/* Swap values of a and b */
#define swap(a, b) do {			\
	typeof(a) _swap_tmp = a;	\
	a = b;				\
	b = _swap_tmp;			\
} while (0)

#define	DIV_ROUND_CLOSEST(x, divisor)	(((x) + ((divisor) / 2)) / (divisor))

static inline uintmax_t
mult_frac(uintmax_t x, uintmax_t multiplier, uintmax_t divisor)
{
	uintmax_t q = (x / divisor);
	uintmax_t r = (x % divisor);

	return ((q * multiplier) + ((r * multiplier) / divisor));
}

static inline int64_t
abs64(int64_t x)
{
	return (x < 0 ? -x : x);
}

#endif	/* _LINUX_KERNEL_H_ */