1323124Sdes/*- 260573Skris * Copyright (c) 2010 Isilon Systems, Inc. 360573Skris * Copyright (c) 2010 iX Systems, Inc. 460573Skris * Copyright (c) 2010 Panasas, Inc. 560573Skris * Copyright (c) 2013-2016 Mellanox Technologies, Ltd. 660573Skris * Copyright (c) 2015 Fran��ois Tigeot 760573Skris * All rights reserved. 860573Skris * 960573Skris * Redistribution and use in source and binary forms, with or without 1060573Skris * modification, are permitted provided that the following conditions 1160573Skris * are met: 1260573Skris * 1. Redistributions of source code must retain the above copyright 1360573Skris * notice unmodified, this list of conditions, and the following 1460573Skris * disclaimer. 1560573Skris * 2. Redistributions in binary form must reproduce the above copyright 1660573Skris * notice, this list of conditions and the following disclaimer in the 1760573Skris * documentation and/or other materials provided with the distribution. 1860573Skris * 1960573Skris * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 2060573Skris * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 2160573Skris * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 2260573Skris * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 2360573Skris * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 2460573Skris * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2565674Skris * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2660573Skris * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27162856Sdes * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 2860573Skris * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29162856Sdes */ 30181111Sdes#ifndef _LINUXKPI_LINUX_COMPILER_H_ 31181111Sdes#define _LINUXKPI_LINUX_COMPILER_H_ 32162856Sdes 33181111Sdes#include <sys/cdefs.h> 34162856Sdes 35162856Sdes#define __user 36162856Sdes#define __kernel 37181111Sdes#define __safe 38162856Sdes#define __force 39197679Sdes#define __nocast 40162856Sdes#define __iomem 4176262Sgreen#define __chk_user_ptr(x) ((void)0) 4260573Skris#define __chk_io_ptr(x) ((void)0) 4376262Sgreen#define __builtin_warning(x, y...) (1) 44162856Sdes#define __acquires(x) 45295367Sdes#define __releases(x) 4660573Skris#define __acquire(x) do { } while (0) 4760573Skris#define __release(x) do { } while (0) 48162856Sdes#define __cond_lock(x,c) (c) 49162856Sdes#define __bitwise 5060573Skris#define __devinitdata 5160573Skris#define __deprecated 5276262Sgreen#define __init 53147005Sdes#define __initconst 54162856Sdes#define __devinit 5560573Skris#define __devexit 56124211Sdes#define __exit 57124211Sdes#define __rcu 58124211Sdes#define __percpu 59162856Sdes#define __weak __weak_symbol 60124211Sdes#define __malloc 6160573Skris#define __attribute_const__ __attribute__((__const__)) 6260573Skris#undef __always_inline 6376262Sgreen#define __always_inline inline 64124211Sdes#define noinline __noinline 65147005Sdes#define noinline_for_stack __noinline 6660573Skris#define ____cacheline_aligned __aligned(CACHE_LINE_SIZE) 6798684Sdes#define ____cacheline_aligned_in_smp __aligned(CACHE_LINE_SIZE) 6898684Sdes#define fallthrough /* FALLTHROUGH */ do { } while(0) 6998684Sdes 7098684Sdes#if __has_attribute(__nonstring__) 7198684Sdes#define __nonstring __attribute__((__nonstring__)) 7298684Sdes#else 7398684Sdes#define __nonstring 74124211Sdes#endif 75124211Sdes#if __has_attribute(__counted_by__) 76124211Sdes#define __counted_by(_x) __attribute__((__counted_by__(_x))) 7798684Sdes#else 7898684Sdes#define __counted_by(_x) 7998684Sdes#endif 8098684Sdes 81124211Sdes#define likely(x) __builtin_expect(!!(x), 1) 82124211Sdes#define unlikely(x) __builtin_expect(!!(x), 0) 83124211Sdes#define typeof(x) __typeof(x) 8498684Sdes 8598684Sdes#define uninitialized_var(x) x = x 8698684Sdes#define __maybe_unused __unused 8798684Sdes#define __always_unused __unused 8869591Sgreen#define __must_check __result_use_check 8969591Sgreen 9060573Skris#define __printf(a,b) __printflike(a,b) 9160573Skris 92295367Sdes#define barrier() __asm__ __volatile__("": : :"memory") 93295367Sdes 9460573Skris#define lower_32_bits(n) ((u32)(n)) 9560573Skris#define upper_32_bits(n) ((u32)(((n) >> 16) >> 16)) 96248619Sdes 97248619Sdes#define ___PASTE(a,b) a##b 9860573Skris#define __PASTE(a,b) ___PASTE(a,b) 99255767Sdes 100255767Sdes#define WRITE_ONCE(x,v) do { \ 101255767Sdes barrier(); \ 102255767Sdes (*(volatile __typeof(x) *)(uintptr_t)&(x)) = (v); \ 103255767Sdes barrier(); \ 104255767Sdes} while (0) 105181111Sdes 106181111Sdes#define READ_ONCE(x) ({ \ 107181111Sdes __typeof(x) __var = ({ \ 108181111Sdes barrier(); \ 109181111Sdes (*(const volatile __typeof(x) *)&(x)); \ 110181111Sdes }); \ 111181111Sdes barrier(); \ 112181111Sdes __var; \ 113181111Sdes}) 114181111Sdes 115181111Sdes#define lockless_dereference(p) READ_ONCE(p) 116181111Sdes 117181111Sdes#define _AT(T,X) ((T)(X)) 118181111Sdes 119240075Sdes#define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b)) 120181111Sdes#define __must_be_array(a) __same_type(a, &(a)[0]) 121181111Sdes 122181111Sdes#define sizeof_field(_s, _m) sizeof(((_s *)0)->_m) 123181111Sdes 124181111Sdes#define is_signed_type(t) ((t)-1 < (t)1) 125181111Sdes#define is_unsigned_type(t) ((t)-1 > (t)1) 126181111Sdes 127181111Sdes#endif /* _LINUXKPI_LINUX_COMPILER_H_ */ 128181111Sdes