184 lines
4.3 KiB
C
184 lines
4.3 KiB
C
/* $NetBSD: uvm_init.c,v 1.45 2013/01/29 21:37:04 para Exp $ */
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/*
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* Copyright (c) 1997 Charles D. Cranor and Washington University.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* from: Id: uvm_init.c,v 1.1.2.3 1998/02/06 05:15:27 chs Exp
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*/
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/*
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* uvm_init.c: init the vm system.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: uvm_init.c,v 1.45 2013/01/29 21:37:04 para Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/debug.h>
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#include <sys/file.h>
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#include <sys/filedesc.h>
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#include <sys/resourcevar.h>
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#include <sys/kmem.h>
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#include <sys/mman.h>
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#include <sys/vnode.h>
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#include <uvm/uvm.h>
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#include <uvm/uvm_pdpolicy.h>
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#include <uvm/uvm_readahead.h>
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/*
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* struct uvm: we store most global vars in this structure to make them
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* easier to spot...
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*/
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struct uvm uvm; /* decl */
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struct uvmexp uvmexp; /* decl */
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struct uvm_object *uvm_kernel_object;
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#if defined(__uvmexp_pagesize)
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const int * const uvmexp_pagesize = &uvmexp.pagesize;
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const int * const uvmexp_pagemask = &uvmexp.pagemask;
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const int * const uvmexp_pageshift = &uvmexp.pageshift;
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#endif
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kmutex_t uvm_pageqlock;
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kmutex_t uvm_fpageqlock;
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kmutex_t uvm_kentry_lock;
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kmutex_t uvm_swap_data_lock;
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/*
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* uvm_init: init the VM system. called from kern/init_main.c.
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*/
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void
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uvm_init(void)
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{
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vaddr_t kvm_start, kvm_end;
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/*
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* Ensure that the hardware set the page size, zero the UVM structure.
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*/
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if (uvmexp.pagesize == 0) {
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panic("uvm_init: page size not set");
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}
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memset(&uvm, 0, sizeof(uvm));
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averunnable.fscale = FSCALE;
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/*
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* Init the page sub-system. This includes allocating the vm_page
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* structures, and setting up all the page queues (and locks).
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* Available memory will be put in the "free" queue, kvm_start and
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* kvm_end will be set to the area of kernel virtual memory which
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* is available for general use.
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*/
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uvm_page_init(&kvm_start, &kvm_end);
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/*
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* Init the map sub-system.
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*/
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uvm_map_init();
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/*
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* Setup the kernel's virtual memory data structures. This includes
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* setting up the kernel_map/kernel_object.
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* Bootstrap all kernel memory allocators.
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*/
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uao_init();
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uvm_km_bootstrap(kvm_start, kvm_end);
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/*
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* Setup uvm_map caches and init the amap.
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*/
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uvm_map_init_caches();
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uvm_amap_init();
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/*
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* Init the pmap module. The pmap module is free to allocate
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* memory for its private use (e.g. pvlists).
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*/
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pmap_init();
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/*
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* Make kernel memory allocators ready for use.
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* After this call the pool/kmem memory allocators can be used.
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*/
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uvm_km_init();
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#ifdef DEBUG
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debug_init();
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#endif
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/*
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* Init all pagers and the pager_map.
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*/
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uvm_pager_init();
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/*
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* Initialize the uvm_loan() facility.
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*/
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uvm_loan_init();
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/*
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* Init emap subsystem.
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*/
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uvm_emap_sysinit();
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/*
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* The VM system is now up! Now that kmem is up we can resize the
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* <obj,off> => <page> hash table for general use and enable paging
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* of kernel objects.
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*/
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uao_create(VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS,
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UAO_FLAG_KERNSWAP);
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uvmpdpol_reinit();
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/*
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* Init anonymous memory systems.
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*/
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uvm_anon_init();
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uvm_uarea_init();
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/*
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* Init readahead mechanism.
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*/
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uvm_ra_init();
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}
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