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