kernel.h revision 277139
1139823Simp/*- 21541Srgrimes * Copyright (c) 2010 Isilon Systems, Inc. 3169465Srwatson * Copyright (c) 2010 iX Systems, Inc. 4169465Srwatson * Copyright (c) 2010 Panasas, Inc. 51541Srgrimes * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd. 61541Srgrimes * All rights reserved. 71541Srgrimes * 81541Srgrimes * Redistribution and use in source and binary forms, with or without 91541Srgrimes * modification, are permitted provided that the following conditions 101541Srgrimes * are met: 111541Srgrimes * 1. Redistributions of source code must retain the above copyright 121541Srgrimes * notice unmodified, this list of conditions, and the following 131541Srgrimes * disclaimer. 141541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 151541Srgrimes * notice, this list of conditions and the following disclaimer in the 161541Srgrimes * documentation and/or other materials provided with the distribution. 171541Srgrimes * 181541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 191541Srgrimes * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 201541Srgrimes * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 211541Srgrimes * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 221541Srgrimes * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 231541Srgrimes * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 241541Srgrimes * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 251541Srgrimes * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 261541Srgrimes * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 271541Srgrimes * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 281541Srgrimes */ 291541Srgrimes#ifndef _LINUX_KERNEL_H_ 301541Srgrimes#define _LINUX_KERNEL_H_ 3150477Speter 321541Srgrimes#include <sys/systm.h> 331541Srgrimes#include <sys/param.h> 342169Spaul#include <sys/libkern.h> 35169465Srwatson#include <sys/stat.h> 362169Spaul#include <sys/smp.h> 371541Srgrimes#include <sys/stddef.h> 381541Srgrimes#include <sys/syslog.h> 39169465Srwatson 401541Srgrimes#include <linux/bitops.h> 411541Srgrimes#include <linux/compiler.h> 421541Srgrimes#include <linux/errno.h> 431541Srgrimes#include <linux/kthread.h> 441541Srgrimes#include <linux/types.h> 451541Srgrimes#include <linux/jiffies.h> 461541Srgrimes#include <linux/wait.h> 471541Srgrimes#include <linux/log2.h> 48137971Srwatson#include <asm/byteorder.h> 491541Srgrimes 501541Srgrimes#define KERN_CONT "" 511541Srgrimes#define KERN_EMERG "<0>" 521541Srgrimes#define KERN_ALERT "<1>" 531541Srgrimes#define KERN_CRIT "<2>" 541541Srgrimes#define KERN_ERR "<3>" 551541Srgrimes#define KERN_WARNING "<4>" 561541Srgrimes#define KERN_NOTICE "<5>" 571541Srgrimes#define KERN_INFO "<6>" 581541Srgrimes#define KERN_DEBUG "<7>" 591541Srgrimes 6052904Sshin#define BUG() panic("BUG") 6152904Sshin#define BUG_ON(condition) do { if (condition) BUG(); } while(0) 6252904Sshin#define WARN_ON BUG_ON 6352904Sshin 6452904Sshin#undef ALIGN 6552904Sshin#define ALIGN(x, y) roundup2((x), (y)) 6652904Sshin#define DIV_ROUND_UP howmany 6752904Sshin 6852904Sshin#define printk(X...) printf(X) 6952904Sshin 7052904Sshin/* 7152904Sshin * The "pr_debug()" and "pr_devel()" macros should produce zero code 7252904Sshin * unless DEBUG is defined: 7352904Sshin */ 741541Srgrimes#ifdef DEBUG 7552904Sshin#define pr_debug(fmt, ...) \ 761541Srgrimes log(LOG_DEBUG, fmt, ##__VA_ARGS__) 771541Srgrimes#define pr_devel(fmt, ...) \ 781541Srgrimes log(LOG_DEBUG, pr_fmt(fmt), ##__VA_ARGS__) 791541Srgrimes#else 80169465Srwatson#define pr_debug(fmt, ...) \ 81169465Srwatson ({ if (0) log(LOG_DEBUG, fmt, ##__VA_ARGS__); 0; }) 82169465Srwatson#define pr_devel(fmt, ...) \ 83169465Srwatson ({ if (0) log(LOG_DEBUG, pr_fmt(fmt), ##__VA_ARGS__); 0; }) 841541Srgrimes#endif 8512296Sphk 8645439Sjulian#define udelay(t) DELAY(t) 8745439Sjulian 8845439Sjulian#ifndef pr_fmt 8945439Sjulian#define pr_fmt(fmt) fmt 9045439Sjulian#endif 9145439Sjulian 9245439Sjulian/* 9352952Sjlemon * Print a one-time message (analogous to WARN_ONCE() et al): 9445439Sjulian */ 9545439Sjulian#define printk_once(...) do { \ 9645439Sjulian static bool __print_once; \ 9745439Sjulian \ 981541Srgrimes if (!__print_once) { \ 991541Srgrimes __print_once = true; \ 1001541Srgrimes printk(__VA_ARGS__); \ 1011541Srgrimes } \ 1021541Srgrimes} while (0) 1031541Srgrimes 1041541Srgrimes/* 105171656Sdes * Log a one-time message (analogous to WARN_ONCE() et al): 1061541Srgrimes */ 1071541Srgrimes#define log_once(level,...) do { \ 1081541Srgrimes static bool __log_once; \ 1091541Srgrimes \ 1101541Srgrimes if (!__log_once) { \ 1112169Spaul __log_once = true; \ 1122169Spaul log(level, __VA_ARGS__); \ 113 } \ 114} while (0) 115 116#define pr_emerg(fmt, ...) \ 117 log(LOG_EMERG, pr_fmt(fmt), ##__VA_ARGS__) 118#define pr_alert(fmt, ...) \ 119 log(LOG_ALERT, pr_fmt(fmt), ##__VA_ARGS__) 120#define pr_crit(fmt, ...) \ 121 log(LOG_CRIT, pr_fmt(fmt), ##__VA_ARGS__) 122#define pr_err(fmt, ...) \ 123 log(LOG_ERR, pr_fmt(fmt), ##__VA_ARGS__) 124#define pr_warning(fmt, ...) \ 125 log(LOG_WARNING, pr_fmt(fmt), ##__VA_ARGS__) 126#define pr_warn pr_warning 127#define pr_notice(fmt, ...) \ 128 log(LOG_NOTICE, pr_fmt(fmt), ##__VA_ARGS__) 129#define pr_info(fmt, ...) \ 130 log(LOG_INFO, pr_fmt(fmt), ##__VA_ARGS__) 131#define pr_info_once(fmt, ...) \ 132 log_once(LOG_INFO, pr_fmt(fmt), ##__VA_ARGS__) 133#define pr_cont(fmt, ...) \ 134 printk(KERN_CONT fmt, ##__VA_ARGS__) 135 136#ifndef WARN 137#define WARN(condition, format...) ({ \ 138 int __ret_warn_on = !!(condition); \ 139 if (unlikely(__ret_warn_on)) \ 140 pr_warning(format); \ 141 unlikely(__ret_warn_on); \ 142}) 143#endif 144 145#define container_of(ptr, type, member) \ 146({ \ 147 __typeof(((type *)0)->member) *_p = (ptr); \ 148 (type *)((char *)_p - offsetof(type, member)); \ 149}) 150 151#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) 152 153#define simple_strtoul strtoul 154#define simple_strtol strtol 155#define kstrtol(a,b,c) ({*(c) = strtol(a,0,b);}) 156 157#define min(x, y) ((x) < (y) ? (x) : (y)) 158#define max(x, y) ((x) > (y) ? (x) : (y)) 159#define min_t(type, _x, _y) ((type)(_x) < (type)(_y) ? (type)(_x) : (type)(_y)) 160#define max_t(type, _x, _y) ((type)(_x) > (type)(_y) ? (type)(_x) : (type)(_y)) 161 162/* 163 * This looks more complex than it should be. But we need to 164 * get the type for the ~ right in round_down (it needs to be 165 * as wide as the result!), and we want to evaluate the macro 166 * arguments just once each. 167 */ 168#define __round_mask(x, y) ((__typeof__(x))((y)-1)) 169#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1) 170#define round_down(x, y) ((x) & ~__round_mask(x, y)) 171 172#define num_possible_cpus() mp_ncpus 173 174typedef struct pm_message { 175 int event; 176} pm_message_t; 177 178#endif /* _LINUX_KERNEL_H_ */ 179