compiler.h

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    1 /*
    2  * Copyright (c) 2010 Isilon Systems, Inc.
    3  * Copyright (c) 2010 iXsystems, Inc.
    4  * Copyright (c) 2010 Panasas, Inc.
    5  * Copyright (c) 2013-2016 Mellanox Technologies, Ltd.
    6  * Copyright (c) 2015 François 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  * $FreeBSD$
   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 #define zfs_fallthrough                 __attribute__((__fallthrough__))
   71 
   72 #if !defined(_KERNEL) && !defined(_STANDALONE)
   73 #define likely(x)                       __builtin_expect(!!(x), 1)
   74 #define unlikely(x)                     __builtin_expect(!!(x), 0)
   75 #endif
   76 #define typeof(x)                       __typeof(x)
   77 
   78 #define uninitialized_var(x)            x = x
   79 #define __maybe_unused                  __unused
   80 #define __always_unused                 __unused
   81 #define __must_check                    __result_use_check
   82 
   83 #define __printf(a, b)                  __printflike(a, b)
   84 
   85 #define barrier()                       __asm__ __volatile__("": : :"memory")
   86 #define ___PASTE(a, b) a##b
   87 #define __PASTE(a, b) ___PASTE(a, b)
   88 
   89 #define ACCESS_ONCE(x)                  (*(volatile __typeof(x) *)&(x))
   90 
   91 #define WRITE_ONCE(x, v) do {           \
   92         barrier();                      \
   93         ACCESS_ONCE(x) = (v);           \
   94         barrier();                      \
   95 } while (0)
   96 
   97 #define lockless_dereference(p) READ_ONCE(p)
   98 
   99 #define _AT(T, X)       ((T)(X))
  100 
  101 #endif  /* _LINUX_COMPILER_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/contrib/openzfs/include/os/freebsd/linux/compiler.h

FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/os/freebsd/linux/compiler.h