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/mips/include/pcpu.h

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    1 /*-
    2  * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
    3  * Copyright (c) Peter Wemm <peter@netplex.com.au>
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  *
   27  *      from: src/sys/alpha/include/pcpu.h,v 1.15 2004/11/05 19:16:44 jhb
   28  * $FreeBSD: releng/8.4/sys/mips/include/pcpu.h 215938 2010-11-27 12:26:40Z jchandra $
   29  */
   30 
   31 #ifndef _MACHINE_PCPU_H_
   32 #define _MACHINE_PCPU_H_
   33 
   34 #include <machine/pte.h>
   35 
   36 #define PCPU_MD_FIELDS                                                  \
   37         pd_entry_t      *pc_segbase;            /* curthread segbase */ \
   38         struct  pmap    *pc_curpmap;            /* pmap of curthread */ \
   39         u_int32_t       pc_next_asid;           /* next ASID to alloc */ \
   40         u_int32_t       pc_asid_generation;     /* current ASID generation */ \
   41         u_int           pc_pending_ipis;        /* IPIs pending to this CPU */
   42 
   43 #ifdef _KERNEL
   44 
   45 extern char pcpu_space[MAXCPU][PAGE_SIZE * 2];
   46 #define PCPU_ADDR(cpu)          (struct pcpu *)(pcpu_space[(cpu)])
   47 
   48 extern struct pcpu *pcpup;
   49 #define PCPUP   pcpup
   50 
   51 #define PCPU_ADD(member, value) (PCPUP->pc_ ## member += (value))
   52 #define PCPU_GET(member)        (PCPUP->pc_ ## member)
   53 #define PCPU_INC(member)        PCPU_ADD(member, 1)
   54 #define PCPU_PTR(member)        (&PCPUP->pc_ ## member)
   55 #define PCPU_SET(member,value)  (PCPUP->pc_ ## member = (value))
   56 #define PCPU_LAZY_INC(member)   (++PCPUP->pc_ ## member)
   57 
   58 #ifdef SMP
   59 /*
   60  * Instantiate the wired TLB entry at PCPU_TLB_ENTRY to map 'pcpu' at 'pcpup'.
   61  */
   62 void    mips_pcpu_tlb_init(struct pcpu *pcpu);
   63 #endif
   64 
   65 #endif  /* _KERNEL */
   66 
   67 #endif  /* !_MACHINE_PCPU_H_ */

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