The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/spl.h

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    1 /*      $NetBSD: spl.h,v 1.10 2021/11/02 11:26:05 ryo Exp $     */
    2 
    3 /*-
    4  * Copyright (c)2005 YAMAMOTO Takashi,
    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, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 /*
   30  * this header is intended to be included by MD header.
   31  *
   32  * an assumption: makeiplcookie() is reasonably fast.
   33  * if it isn't the case for your port, it's better to have MD optimized
   34  * splxxx() functions, rather than using this header.
   35  */
   36 
   37 #if !defined(_KERNEL) && !defined(_KMEMUSER)
   38 #error not supposed to be exposed to userland.
   39 #endif /* !defined(_KERNEL) && !defined(_KMEMUSER) */
   40 
   41 #define _SPL_DECL(x, X) \
   42         static __inline __always_inline int \
   43         spl##x(void) \
   44         { return splraiseipl(makeiplcookie(IPL_##X)); }
   45 
   46 #if defined(IPL_SOFTCLOCK)
   47 _SPL_DECL(softclock, SOFTCLOCK)
   48 #endif /* defined(IPL_SOFTCLOCK) */
   49 #if defined(IPL_SOFTNET)
   50 _SPL_DECL(softnet, SOFTNET)
   51 #endif /* defined(IPL_SOFTNET) */
   52 #if defined(IPL_SOFTSERIAL)
   53 _SPL_DECL(softserial, SOFTSERIAL)
   54 #endif /* defined(IPL_SOFTSERIAL) */
   55 
   56 _SPL_DECL(vm, VM)
   57 _SPL_DECL(sched, SCHED)
   58 _SPL_DECL(high, HIGH)
   59 
   60 #undef _SPL_DECL

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