196 lines
4.6 KiB
C
196 lines
4.6 KiB
C
/* $NetBSD: uvm_init.c,v 1.41 2011/04/24 03:56:50 rmind Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1997 Charles D. Cranor and Washington University.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* from: Id: uvm_init.c,v 1.1.2.3 1998/02/06 05:15:27 chs Exp
|
|
*/
|
|
|
|
/*
|
|
* uvm_init.c: init the vm system.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: uvm_init.c,v 1.41 2011/04/24 03:56:50 rmind Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/debug.h>
|
|
#include <sys/file.h>
|
|
#include <sys/filedesc.h>
|
|
#include <sys/resourcevar.h>
|
|
#include <sys/kmem.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/vnode.h>
|
|
|
|
#include <uvm/uvm.h>
|
|
#include <uvm/uvm_pdpolicy.h>
|
|
#include <uvm/uvm_readahead.h>
|
|
|
|
/*
|
|
* struct uvm: we store most global vars in this structure to make them
|
|
* easier to spot...
|
|
*/
|
|
|
|
struct uvm uvm; /* decl */
|
|
struct uvmexp uvmexp; /* decl */
|
|
struct uvm_object *uvm_kernel_object;
|
|
|
|
#if defined(__uvmexp_pagesize)
|
|
int *uvmexp_pagesize = &uvmexp.pagesize;
|
|
int *uvmexp_pagemask = &uvmexp.pagemask;
|
|
int *uvmexp_pageshift = &uvmexp.pageshift;
|
|
#endif
|
|
|
|
kmutex_t uvm_pageqlock;
|
|
kmutex_t uvm_fpageqlock;
|
|
kmutex_t uvm_kentry_lock;
|
|
kmutex_t uvm_swap_data_lock;
|
|
|
|
/*
|
|
* uvm_init: init the VM system. called from kern/init_main.c.
|
|
*/
|
|
|
|
void
|
|
uvm_init(void)
|
|
{
|
|
vaddr_t kvm_start, kvm_end;
|
|
|
|
/*
|
|
* step 0: ensure that the hardware set the page size
|
|
*/
|
|
|
|
if (uvmexp.pagesize == 0) {
|
|
panic("uvm_init: page size not set");
|
|
}
|
|
|
|
/*
|
|
* step 1: zero the uvm structure
|
|
*/
|
|
|
|
memset(&uvm, 0, sizeof(uvm));
|
|
averunnable.fscale = FSCALE;
|
|
uvm_amap_init();
|
|
|
|
/*
|
|
* step 2: init the page sub-system. this includes allocating the
|
|
* vm_page structures, and setting up all the page queues (and
|
|
* locks). available memory will be put in the "free" queue.
|
|
* kvm_start and kvm_end will be set to the area of kernel virtual
|
|
* memory which is available for general use.
|
|
*/
|
|
|
|
uvm_page_init(&kvm_start, &kvm_end);
|
|
|
|
/*
|
|
* step 3: init the map sub-system. allocates the static pool of
|
|
* vm_map_entry structures that are used for "special" kernel maps
|
|
* (e.g. kernel_map, kmem_map, etc...).
|
|
*/
|
|
|
|
uvm_map_init();
|
|
|
|
/*
|
|
* step 4: setup the kernel's virtual memory data structures. this
|
|
* includes setting up the kernel_map/kernel_object.
|
|
*/
|
|
|
|
uvm_km_init(kvm_start, kvm_end);
|
|
|
|
/*
|
|
* step 5: init the pmap module. the pmap module is free to allocate
|
|
* memory for its private use (e.g. pvlists).
|
|
*/
|
|
|
|
pmap_init();
|
|
|
|
/*
|
|
* step 6: init the kernel memory allocator. after this call the
|
|
* kernel memory allocator (malloc) can be used. this includes
|
|
* setting up the kmem_map.
|
|
*/
|
|
|
|
kmeminit();
|
|
|
|
#ifdef DEBUG
|
|
debug_init();
|
|
#endif
|
|
|
|
/*
|
|
* step 7: init all pagers and the pager_map.
|
|
*/
|
|
|
|
uvm_pager_init();
|
|
|
|
/*
|
|
* Initialize pools. This must be done before anyone manipulates
|
|
* any vm_maps because we use a pool for some map entry structures.
|
|
*/
|
|
|
|
pool_subsystem_init();
|
|
|
|
/*
|
|
* init slab memory allocator kmem(9).
|
|
*/
|
|
|
|
kmem_init();
|
|
|
|
/*
|
|
* Initialize the uvm_loan() facility.
|
|
*/
|
|
|
|
uvm_loan_init();
|
|
|
|
/*
|
|
* init emap subsystem.
|
|
*/
|
|
|
|
uvm_emap_sysinit();
|
|
|
|
/*
|
|
* the VM system is now up! now that kmem is up we can resize the
|
|
* <obj,off> => <page> hash table for general use and enable paging
|
|
* of kernel objects.
|
|
*/
|
|
|
|
uao_create(VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS,
|
|
UAO_FLAG_KERNSWAP);
|
|
|
|
uvmpdpol_reinit();
|
|
|
|
/*
|
|
* init anonymous memory systems
|
|
*/
|
|
|
|
uvm_anon_init();
|
|
|
|
uvm_uarea_init();
|
|
|
|
/*
|
|
* init readahead module
|
|
*/
|
|
|
|
uvm_ra_init();
|
|
}
|