1 /*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2010 iX Systems, Inc. 4 * Copyright (c) 2010 Panasas, Inc. 5 * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice unmodified, this list of conditions, and the following 13 * disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 #ifndef _LINUX_KERNEL_H_ 30 #define _LINUX_KERNEL_H_ 31 32 #include <sys/cdefs.h> 33 #include <sys/types.h> 34 #include <sys/systm.h> 35 #include <sys/param.h> 36 #include <sys/libkern.h> 37 #include <sys/stat.h> 38 #include <sys/smp.h> 39 #include <sys/stddef.h> 40 #include <sys/syslog.h> 41 42 #include <linux/bitops.h> 43 #include <linux/compiler.h> 44 #include <linux/errno.h> 45 #include <linux/kthread.h> 46 #include <linux/types.h> 47 #include <linux/jiffies.h> 48 #include <linux/wait.h> 49 #include <linux/log2.h> 50 #include <asm/byteorder.h> 51 52 #define KERN_CONT "" 53 #define KERN_EMERG "<0>" 54 #define KERN_ALERT "<1>" 55 #define KERN_CRIT "<2>" 56 #define KERN_ERR "<3>" 57 #define KERN_WARNING "<4>" 58 #define KERN_NOTICE "<5>" 59 #define KERN_INFO "<6>" 60 #define KERN_DEBUG "<7>" 61 62 #define BUILD_BUG_ON(x) CTASSERT(!(x)) 63 64 #define BUG() panic("BUG") 65 #define BUG_ON(condition) do { if (condition) BUG(); } while(0) 66 #define WARN_ON(cond) ({ \ 67 bool __ret = (cond); \ 68 if (__ret) { \ 69 printf("WARNING %s failed at %s:%d\n", \ 70 __stringify(cond), __FILE__, __LINE__); \ 71 } \ 72 unlikely(__ret); \ 73 }) 74 75 #undef ALIGN 76 #define ALIGN(x, y) roundup2((x), (y)) 77 #undef PTR_ALIGN 78 #define PTR_ALIGN(p, a) ((__typeof(p))ALIGN((uintptr_t)(p), (a))) 79 #define DIV_ROUND_UP howmany 80 #define FIELD_SIZEOF(t, f) sizeof(((t *)0)->f) 81 82 #define printk(X...) printf(X) 83 84 /* 85 * The "pr_debug()" and "pr_devel()" macros should produce zero code 86 * unless DEBUG is defined: 87 */ 88 #ifdef DEBUG 89 #define pr_debug(fmt, ...) \ 90 log(LOG_DEBUG, fmt, ##__VA_ARGS__) 91 #define pr_devel(fmt, ...) \ 92 log(LOG_DEBUG, pr_fmt(fmt), ##__VA_ARGS__) 93 #else 94 #define pr_debug(fmt, ...) \ 95 ({ if (0) log(LOG_DEBUG, fmt, ##__VA_ARGS__); 0; }) 96 #define pr_devel(fmt, ...) \ 97 ({ if (0) log(LOG_DEBUG, pr_fmt(fmt), ##__VA_ARGS__); 0; }) 98 #endif 99 100 #define udelay(t) DELAY(t) 101 #define usleep_range(min,max) DELAY(min) 102 103 #ifndef pr_fmt 104 #define pr_fmt(fmt) fmt 105 #endif 106 107 /* 108 * Print a one-time message (analogous to WARN_ONCE() et al): 109 */ 110 #define printk_once(...) do { \ 111 static bool __print_once; \ 112 \ 113 if (!__print_once) { \ 114 __print_once = true; \ 115 printk(__VA_ARGS__); \ 116 } \ 117 } while (0) 118 119 /* 120 * Log a one-time message (analogous to WARN_ONCE() et al): 121 */ 122 #define log_once(level,...) do { \ 123 static bool __log_once; \ 124 \ 125 if (!__log_once) { \ 126 __log_once = true; \ 127 log(level, __VA_ARGS__); \ 128 } \ 129 } while (0) 130 131 #define pr_emerg(fmt, ...) \ 132 log(LOG_EMERG, pr_fmt(fmt), ##__VA_ARGS__) 133 #define pr_alert(fmt, ...) \ 134 log(LOG_ALERT, pr_fmt(fmt), ##__VA_ARGS__) 135 #define pr_crit(fmt, ...) \ 136 log(LOG_CRIT, pr_fmt(fmt), ##__VA_ARGS__) 137 #define pr_err(fmt, ...) \ 138 log(LOG_ERR, pr_fmt(fmt), ##__VA_ARGS__) 139 #define pr_warning(fmt, ...) \ 140 log(LOG_WARNING, pr_fmt(fmt), ##__VA_ARGS__) 141 #define pr_warn pr_warning 142 #define pr_notice(fmt, ...) \ 143 log(LOG_NOTICE, pr_fmt(fmt), ##__VA_ARGS__) 144 #define pr_info(fmt, ...) \ 145 log(LOG_INFO, pr_fmt(fmt), ##__VA_ARGS__) 146 #define pr_info_once(fmt, ...) \ 147 log_once(LOG_INFO, pr_fmt(fmt), ##__VA_ARGS__) 148 #define pr_cont(fmt, ...) \ 149 printk(KERN_CONT fmt, ##__VA_ARGS__) 150 151 #ifndef WARN 152 #define WARN(condition, format...) ({ \ 153 int __ret_warn_on = !!(condition); \ 154 if (unlikely(__ret_warn_on)) \ 155 pr_warning(format); \ 156 unlikely(__ret_warn_on); \ 157 }) 158 #endif 159 160 #define container_of(ptr, type, member) \ 161 ({ \ 162 __typeof(((type *)0)->member) *_p = (ptr); \ 163 (type *)((char *)_p - offsetof(type, member)); \ 164 }) 165 166 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) 167 168 #define simple_strtoul strtoul 169 #define simple_strtol strtol 170 #define kstrtol(a,b,c) ({*(c) = strtol(a,0,b);}) 171 172 #define min(x, y) ((x) < (y) ? (x) : (y)) 173 #define max(x, y) ((x) > (y) ? (x) : (y)) 174 #define min_t(type, _x, _y) ((type)(_x) < (type)(_y) ? (type)(_x) : (type)(_y)) 175 #define max_t(type, _x, _y) ((type)(_x) > (type)(_y) ? (type)(_x) : (type)(_y)) 176 177 /* 178 * This looks more complex than it should be. But we need to 179 * get the type for the ~ right in round_down (it needs to be 180 * as wide as the result!), and we want to evaluate the macro 181 * arguments just once each. 182 */ 183 #define __round_mask(x, y) ((__typeof__(x))((y)-1)) 184 #define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1) 185 #define round_down(x, y) ((x) & ~__round_mask(x, y)) 186 187 #define num_possible_cpus() mp_ncpus 188 #define num_online_cpus() mp_ncpus 189 190 typedef struct pm_message { 191 int event; 192 } pm_message_t; 193 194 #endif /* _LINUX_KERNEL_H_ */ 195