52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
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/*
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** Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
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** Distributed under the terms of the NewOS License.
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*/
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#ifndef _KERNEL_VM_PRIV_H
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#define _KERNEL_VM_PRIV_H
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#include <vm.h>
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#include <khash.h>
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/* should make these scale with the system */
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#define DEFAULT_KERNEL_WORKING_SET 1024
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#define DEFAULT_WORKING_SET 256
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#define DEFAULT_MAX_WORKING_SET 65536
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#define DEFAULT_MIN_WORKING_SET 64
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#define WORKING_SET_INCREMENT 32
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#define WORKING_SET_DECREMENT 32
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#define PAGE_DAEMON_INTERVAL 500000
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#define PAGE_SCAN_QUANTUM 500
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#define WORKING_SET_ADJUST_INTERVAL 5000000
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#define MAX_FAULTS_PER_SECOND 100
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#define MIN_FAULTS_PER_SECOND 10
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#define WRITE_COUNT 1024
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#define READ_COUNT 1
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// page attributes
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#define PAGE_MODIFIED 0x04
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#define PAGE_ACCESSED 0x08
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#define PAGE_PRESENT 0x10
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// Should only be used by vm internals
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int vm_page_fault(addr address, addr fault_address, bool is_write, bool is_user, addr *newip);
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void vm_increase_max_commit(addr delta);
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int vm_daemon_init(void);
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// used by the page daemon to walk the list of address spaces
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int vm_aspace_walk_start(struct hash_iterator *i);
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vm_address_space *vm_aspace_walk_next(struct hash_iterator *i);
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// get some data about the number of pages in the system
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addr vm_page_num_pages(void);
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addr vm_page_num_free_pages(void);
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// allocates memory from the ka structure
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addr vm_alloc_from_ka_struct(kernel_args *ka, unsigned int size, int lock);
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#endif
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