vm_pageout.c (d50c19943070845750cecfaf32cde1a31c047491) vm_pageout.c (9c8b8baa38c9a8135d7602f127cb0c735010837d)
1/*
2 * Copyright (c) 1991 Regents of the University of California.
3 * All rights reserved.
4 * Copyright (c) 1994 John S. Dyson
5 * All rights reserved.
6 * Copyright (c) 1994 David Greenman
7 * All rights reserved.
8 *

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60 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
61 * School of Computer Science
62 * Carnegie Mellon University
63 * Pittsburgh PA 15213-3890
64 *
65 * any improvements or extensions that they make and grant Carnegie the
66 * rights to redistribute these changes.
67 *
1/*
2 * Copyright (c) 1991 Regents of the University of California.
3 * All rights reserved.
4 * Copyright (c) 1994 John S. Dyson
5 * All rights reserved.
6 * Copyright (c) 1994 David Greenman
7 * All rights reserved.
8 *

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60 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
61 * School of Computer Science
62 * Carnegie Mellon University
63 * Pittsburgh PA 15213-3890
64 *
65 * any improvements or extensions that they make and grant Carnegie the
66 * rights to redistribute these changes.
67 *
68 * $Id: vm_pageout.c,v 1.141 1999/04/23 20:29:57 dt Exp $
68 * $Id: vm_pageout.c,v 1.142 1999/06/26 14:56:58 peter Exp $
69 */
70
71/*
72 * The proverbial page-out daemon.
73 */
74
75#include "opt_vm.h"
76#include <sys/param.h>
77#include <sys/systm.h>
78#include <sys/kernel.h>
79#include <sys/proc.h>
69 */
70
71/*
72 * The proverbial page-out daemon.
73 */
74
75#include "opt_vm.h"
76#include <sys/param.h>
77#include <sys/systm.h>
78#include <sys/kernel.h>
79#include <sys/proc.h>
80#include <sys/kthread.h>
80#include <sys/resourcevar.h>
81#include <sys/signalvar.h>
82#include <sys/vnode.h>
83#include <sys/vmmeter.h>
84#include <sys/sysctl.h>
85
86#include <vm/vm.h>
87#include <vm/vm_param.h>

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106static int vm_pageout_free_page_calc __P((vm_size_t count));
107struct proc *pageproc;
108
109static struct kproc_desc page_kp = {
110 "pagedaemon",
111 vm_pageout,
112 &pageproc
113};
81#include <sys/resourcevar.h>
82#include <sys/signalvar.h>
83#include <sys/vnode.h>
84#include <sys/vmmeter.h>
85#include <sys/sysctl.h>
86
87#include <vm/vm.h>
88#include <vm/vm_param.h>

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107static int vm_pageout_free_page_calc __P((vm_size_t count));
108struct proc *pageproc;
109
110static struct kproc_desc page_kp = {
111 "pagedaemon",
112 vm_pageout,
113 &pageproc
114};
114SYSINIT_KT(pagedaemon, SI_SUB_KTHREAD_PAGE, SI_ORDER_FIRST, kproc_start, &page_kp)
115SYSINIT(pagedaemon, SI_SUB_KTHREAD_PAGE, SI_ORDER_FIRST, kproc_start, &page_kp)
115
116#if !defined(NO_SWAPPING)
117/* the kernel process "vm_daemon"*/
118static void vm_daemon __P((void));
119static struct proc *vmproc;
120
121static struct kproc_desc vm_kp = {
122 "vmdaemon",
123 vm_daemon,
124 &vmproc
125};
116
117#if !defined(NO_SWAPPING)
118/* the kernel process "vm_daemon"*/
119static void vm_daemon __P((void));
120static struct proc *vmproc;
121
122static struct kproc_desc vm_kp = {
123 "vmdaemon",
124 vm_daemon,
125 &vmproc
126};
126SYSINIT_KT(vmdaemon, SI_SUB_KTHREAD_VM, SI_ORDER_FIRST, kproc_start, &vm_kp)
127SYSINIT(vmdaemon, SI_SUB_KTHREAD_VM, SI_ORDER_FIRST, kproc_start, &vm_kp)
127#endif
128
129
130int vm_pages_needed=0; /* Event on which pageout daemon sleeps */
131int vm_pageout_deficit=0; /* Estimated number of pages deficit */
132int vm_pageout_pages_needed=0; /* flag saying that the pageout daemon needs pages */
133
134extern int npendingio;

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129
130
131int vm_pages_needed=0; /* Event on which pageout daemon sleeps */
132int vm_pageout_deficit=0; /* Estimated number of pages deficit */
133int vm_pageout_pages_needed=0; /* flag saying that the pageout daemon needs pages */
134
135extern int npendingio;

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