1/*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2010 iX Systems, Inc. 4 * Copyright (c) 2010 Panasas, Inc. 5 * Copyright (c) 2013-2016 Mellanox Technologies, Ltd. 6 * Copyright (c) 2015 Fran��ois Tigeot 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice unmodified, this list of conditions, and the following 14 * disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * $FreeBSD: stable/11/sys/compat/linuxkpi/common/include/linux/compiler.h 334766 2018-06-07 07:46:39Z hselasky $ 31 */ 32#ifndef _LINUX_COMPILER_H_ 33#define _LINUX_COMPILER_H_ 34 35#include <sys/cdefs.h> 36 37#define __user 38#define __kernel 39#define __safe 40#define __force 41#define __nocast 42#define __iomem 43#define __chk_user_ptr(x) ((void)0) 44#define __chk_io_ptr(x) ((void)0) 45#define __builtin_warning(x, y...) (1) 46#define __acquires(x) 47#define __releases(x) 48#define __acquire(x) do { } while (0) 49#define __release(x) do { } while (0) 50#define __cond_lock(x,c) (c) 51#define __bitwise 52#define __devinitdata 53#define __deprecated 54#define __init 55#define __initconst 56#define __devinit 57#define __devexit 58#define __exit 59#define __rcu 60#define __percpu 61#define __weak __weak_symbol 62#define __malloc 63#define ___stringify(...) #__VA_ARGS__ 64#define __stringify(...) ___stringify(__VA_ARGS__) 65#define __attribute_const__ __attribute__((__const__)) 66#undef __always_inline 67#define __always_inline inline 68#define noinline __noinline 69#define ____cacheline_aligned __aligned(CACHE_LINE_SIZE) 70 71#define likely(x) __builtin_expect(!!(x), 1) 72#define unlikely(x) __builtin_expect(!!(x), 0) 73#define typeof(x) __typeof(x) 74 75#define uninitialized_var(x) x = x 76#define __maybe_unused __unused 77#define __always_unused __unused 78#define __must_check __result_use_check 79 80#define __printf(a,b) __printflike(a,b) 81 82#define barrier() __asm__ __volatile__("": : :"memory") 83 84#define ___PASTE(a,b) a##b 85#define __PASTE(a,b) ___PASTE(a,b) 86 87#define ACCESS_ONCE(x) (*(volatile __typeof(x) *)&(x)) 88 89#define WRITE_ONCE(x,v) do { \ 90 barrier(); \ 91 ACCESS_ONCE(x) = (v); \ 92 barrier(); \ 93} while (0) 94 95#define READ_ONCE(x) ({ \ 96 __typeof(x) __var = ({ \ 97 barrier(); \ 98 ACCESS_ONCE(x); \ 99 }); \ 100 barrier(); \ 101 __var; \ 102}) 103 104#define lockless_dereference(p) READ_ONCE(p) 105 106#define _AT(T,X) ((T)(X)) 107 108#endif /* _LINUX_COMPILER_H_ */ 109