[apple/xnu.git] / osfmk / default_pager / default_pager.c

/*
 * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
/*
 * @OSF_COPYRIGHT@
 */
/* 
 * Mach Operating System
 * Copyright (c) 1991,1990,1989 Carnegie Mellon University
 * All Rights Reserved.
 * 
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 * 
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 * 
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */

/*
 * 	Default pager.
 * 		Threads management.
 *		Requests handling.
 */

#include "default_pager_internal.h"
#include <default_pager/default_pager_object_server.h>
#include <kern/host.h>
#include <kern/ledger.h>
#include <mach/host_info.h>
#include <mach/host_priv.h>
#include <mach/vm_map.h>
#include <ipc/ipc_space.h>
#include <vm/vm_kern.h>
#include <vm/vm_map.h>
#include <vm/vm_protos.h>

char	my_name[] = "(default pager): ";

#if	DEFAULT_PAGER_DEBUG
int	debug_mask = 0;
#endif	/* DEFAULT_PAGER_DEBUG */

/*
 * Use 16 Kbyte stacks instead of the default 64K.
 * Use 4 Kbyte waiting stacks instead of the default 8K.
 */

vm_size_t	cthread_stack_size = 16 *1024;
extern vm_size_t cthread_wait_stack_size;

unsigned long long	vm_page_mask;
int		vm_page_shift;

int 		norma_mk;

boolean_t	verbose;

/* task_t default_pager_self; */	/* Our task port. */
mutex_t			dpt_lock;       /* lock for the dpt array struct */
default_pager_thread_t	**dpt_array;

memory_object_default_t default_pager_object; /* for memory_object_create. */

MACH_PORT_FACE default_pager_default_set; /* Port set for "default" thread. */
MACH_PORT_FACE default_pager_internal_set; /* Port set for internal objects. */
MACH_PORT_FACE default_pager_external_set; /* Port set for external objects. */

#define DEFAULT_PAGER_INTERNAL_COUNT	(4)


/* Memory created by default_pager_object_create should mostly be resident. */
#define DEFAULT_PAGER_EXTERNAL_COUNT	(2)

int	default_pager_internal_count = DEFAULT_PAGER_INTERNAL_COUNT;
/* Number of "internal" threads. */
int	default_pager_external_count = DEFAULT_PAGER_EXTERNAL_COUNT;
/* Number of "external" threads. */

/*
 * Forward declarations.
 */
boolean_t default_pager_notify_server(mach_msg_header_t *,
				      mach_msg_header_t *);
boolean_t default_pager_demux_object(mach_msg_header_t *,
				     mach_msg_header_t *);
boolean_t default_pager_demux_default(mach_msg_header_t *,
				      mach_msg_header_t *);
default_pager_thread_t *start_default_pager_thread(int, boolean_t);
void	default_pager(void);
void	default_pager_thread(void *);
void	default_pager_initialize(void);
boolean_t	dp_parse_argument(char *);	/* forward; */
unsigned int	d_to_i(char *);			/* forward; */

extern int vstruct_def_clshift;


/*
 * Initialize and Run the default pager
 */
void
default_pager(void)
{
	int			i, id;
	__unused static char here[] = "default_pager";
	default_pager_thread_t	dpt;
	kern_return_t kr;


	/*
	 * Give me space for the thread array and zero it.
	 */
	i = default_pager_internal_count + default_pager_external_count + 1;
	dpt_array = (default_pager_thread_t **)
	    kalloc(i * sizeof(default_pager_thread_t *));
	memset(dpt_array, 0, i * sizeof(default_pager_thread_t *));

	/* Setup my thread structure.  */
	id = 0;
	dpt.dpt_buffer = 0;
	dpt.dpt_internal = FALSE;
	dpt.dpt_initialized_p = TRUE;
	dpt_array[0] = &dpt;

	/*
	 * Now we create the threads that will actually
	 * manage objects.
	 */

	for (i = 0; i < default_pager_internal_count; i++) {
		dpt_array[id] = (default_pager_thread_t *)
				kalloc(sizeof (default_pager_thread_t));
		if (dpt_array[id] == NULL)
	 		Panic("alloc pager thread");
		kr = vm_allocate(kernel_map, &((dpt_array[id])->dpt_buffer),
				 vm_page_size << vstruct_def_clshift, VM_FLAGS_ANYWHERE);
		if (kr != KERN_SUCCESS)
			Panic("alloc thread buffer");
		kr = vm_map_wire(kernel_map, (dpt_array[id])->dpt_buffer, 
			((dpt_array[id])->dpt_buffer)
					+(vm_page_size << vstruct_def_clshift), 
			VM_PROT_DEFAULT,
			FALSE);
		if (kr != KERN_SUCCESS)
			Panic("wire thread buffer");
		(dpt_array[id])->dpt_internal = TRUE;
		(dpt_array[id])->dpt_initialized_p = TRUE;
		(dpt_array[id])->checked_out = FALSE;
		id++;
	}
	DPT_LOCK_INIT(dpt_lock);
}


/* simple utility: only works for 2^n */
int
local_log2(
	unsigned int n)
{
	register int	i = 0;

	if(n == 0) return 0;

	while ((n & 1) == 0) {
		i++;
		n >>= 1;
	}
	return i;
}


/* another simple utility, d_to_i(char*) supporting only decimal
 * and devoid of range checking; obscure name chosen deliberately
 * to avoid confusion with semantic-rich POSIX routines */
unsigned int
d_to_i(char * arg)
{
    unsigned int rval = 0;
    char ch;

    while ((ch = *arg++) && ch >= '0' && ch <= '9') {
	rval *= 10;
	rval += ch - '0';
    }
    return(rval);
}


/*
 * Check for non-disk-partition arguments of the form
 *	attribute=argument
 * returning TRUE if one if found
 */
boolean_t dp_parse_argument(char *av)
{
	char *rhs = av;
	__unused static char	here[] = "dp_parse_argument";

	/* Check for '-v' flag */

	if (av[0] == '-' && av[1] == 'v' && av[2] == 0) {
		verbose = TRUE ;
		return TRUE;
	}

	/*
	 * If we find a '=' followed by an argument in the string,
	 * check for known arguments
	 */
	while (*rhs && *rhs != '=')
		rhs++;
	if (*rhs && *++rhs) {
		/* clsize=N pages */
		if (strprefix(av,"cl")) {
			if (!bs_set_default_clsize(d_to_i(rhs)))
				dprintf(("Bad argument (%s) - ignored\n", av));
			return(TRUE);
		}
		/* else if strprefix(av,"another_argument")) {
			handle_another_argument(av);
			return(TRUE);
		} */
	}
	return(FALSE);
}

int
start_def_pager( __unused char *bs_device )
{
/*
	MACH_PORT_FACE		master_device_port;
*/
/*
	MACH_PORT_FACE		security_port;
	MACH_PORT_FACE		root_ledger_wired;
	MACH_PORT_FACE		root_ledger_paged;
*/
	__unused static char here[] = "main";


/*
	default_pager_host_port = ipc_port_make_send(realhost.host_priv_self);
	master_device_port = ipc_port_make_send(master_device_port);
	root_ledger_wired = ipc_port_make_send(root_wired_ledger_port);
	root_ledger_paged = ipc_port_make_send(root_paged_ledger_port);
	security_port = ipc_port_make_send(realhost.host_security_self);
*/


#if NORMA_VM
	norma_mk = 1;
#else
	norma_mk = 0;
#endif


	/* setup read buffers, etc */
	default_pager_initialize();
	default_pager();
	
	/* start the backing store monitor, it runs on a callout thread */
	default_pager_backing_store_monitor_callout = 
		thread_call_allocate(default_pager_backing_store_monitor, NULL);
	if (!default_pager_backing_store_monitor_callout)
		panic("can't start backing store monitor thread");
	thread_call_enter(default_pager_backing_store_monitor_callout);
	
	return (0);
}

kern_return_t
default_pager_info(
	memory_object_default_t	pager,
	default_pager_info_t	*infop)
{
	vm_size_t	pages_total, pages_free;

	if (pager != default_pager_object)
		return KERN_INVALID_ARGUMENT; 

	bs_global_info(&pages_total, &pages_free);

	infop->dpi_total_space = ptoa_32(pages_total);
	infop->dpi_free_space = ptoa_32(pages_free);
	infop->dpi_page_size = vm_page_size;

	return KERN_SUCCESS;
}


kern_return_t
default_pager_info_64(
	memory_object_default_t	pager,
	default_pager_info_64_t	*infop)
{
	vm_size_t	pages_total, pages_free;

	if (pager != default_pager_object)
		return KERN_INVALID_ARGUMENT; 

	bs_global_info(&pages_total, &pages_free);

	infop->dpi_total_space = ptoa_64(pages_total);
	infop->dpi_free_space = ptoa_64(pages_free);
	infop->dpi_page_size = vm_page_size;
	infop->dpi_flags = 0;
	if (dp_encryption_inited && dp_encryption == TRUE) {
		infop->dpi_flags |= DPI_ENCRYPTED;
	}

	return KERN_SUCCESS;
}


void
default_pager_initialize(void)
{
	kern_return_t		kr;
	__unused static char	here[] = "default_pager_initialize";


	/*
	 * Vm variables.
	 */
	vm_page_mask = vm_page_size - 1;
	vm_page_shift = local_log2(vm_page_size);

	/*
	 * List of all vstructs.
	 */
	vstruct_zone = zinit(sizeof(struct vstruct),
			     10000 * sizeof(struct vstruct),
			     8192, "vstruct zone");
	VSL_LOCK_INIT();
	queue_init(&vstruct_list.vsl_queue);
	vstruct_list.vsl_count = 0;

	VSTATS_LOCK_INIT(&global_stats.gs_lock);

	bs_initialize();

	/*
	 * Exported DMM port.
	 */
	default_pager_object = ipc_port_alloc_kernel();


	/*
	 * Export pager interfaces.
	 */
#ifdef	USER_PAGER
	if ((kr = netname_check_in(name_server_port, "UserPager",
				   default_pager_self,
				   default_pager_object))
	    != KERN_SUCCESS) {
		dprintf(("netname_check_in returned 0x%x\n", kr));
		exit(1);
	}
#else	/* USER_PAGER */
	{
		int clsize;
		memory_object_default_t dmm;

		dmm = default_pager_object;
		clsize = (vm_page_size << vstruct_def_clshift);
		kr = host_default_memory_manager(host_priv_self(), &dmm, clsize);
		if ((kr != KERN_SUCCESS) ||
		    (dmm != MEMORY_OBJECT_DEFAULT_NULL))
			Panic("default memory manager");

	}
#endif	/* USER_PAGER */


}
Commit	Line	Data
1c79356b	1	/*
2d21ac55	2	* Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
1c79356b	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
8f6c56a5	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/*
	29	* @OSF_COPYRIGHT@
	30	*/
1c79356b A	31	/*
	32	* Mach Operating System
	33	* Copyright (c) 1991,1990,1989 Carnegie Mellon University
	34	* All Rights Reserved.
	35	*
	36	* Permission to use, copy, modify and distribute this software and its
	37	* documentation is hereby granted, provided that both the copyright
	38	* notice and this permission notice appear in all copies of the
	39	* software, derivative works or modified versions, and any portions
	40	* thereof, and that both notices appear in supporting documentation.
	41	*
	42	* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
	43	* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
	44	* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	45	*
	46	* Carnegie Mellon requests users of this software to return to
	47	*
	48	* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
	49	* School of Computer Science
	50	* Carnegie Mellon University
	51	* Pittsburgh PA 15213-3890
	52	*
	53	* any improvements or extensions that they make and grant Carnegie Mellon
	54	* the rights to redistribute these changes.
	55	*/
	56
	57	/*
	58	* Default pager.
	59	* Threads management.
	60	* Requests handling.
	61	*/
	62
	63	#include "default_pager_internal.h"
91447636	64	#include <default_pager/default_pager_object_server.h>
1c79356b A	65	#include <kern/host.h>
	66	#include <kern/ledger.h>
	67	#include <mach/host_info.h>
91447636 A	68	#include <mach/host_priv.h>
91447636 A	69	#include <mach/vm_map.h>
1c79356b A	70	#include <ipc/ipc_space.h>
1c79356b A	71	#include <vm/vm_kern.h>
91447636 A	72	#include <vm/vm_map.h>
91447636 A	73	#include <vm/vm_protos.h>
1c79356b A	74
	75	char my_name[] = "(default pager): ";
	76
	77	#if DEFAULT_PAGER_DEBUG
	78	int debug_mask = 0;
	79	#endif /* DEFAULT_PAGER_DEBUG */
	80
	81	/*
	82	* Use 16 Kbyte stacks instead of the default 64K.
	83	* Use 4 Kbyte waiting stacks instead of the default 8K.
	84	*/
	85
	86	vm_size_t cthread_stack_size = 16 *1024;
	87	extern vm_size_t cthread_wait_stack_size;
	88
	89	unsigned long long vm_page_mask;
	90	int vm_page_shift;
	91
	92	int norma_mk;
	93
	94	boolean_t verbose;
	95
	96	/* task_t default_pager_self; / / Our task port. */
	97	mutex_t dpt_lock; /* lock for the dpt array struct */
	98	default_pager_thread_t **dpt_array;
	99
0b4e3aa0 A	100	memory_object_default_t default_pager_object; /* for memory_object_create. */
0b4e3aa0 A	101
1c79356b	102	MACH_PORT_FACE default_pager_default_set; /* Port set for "default" thread. */
1c79356b A	103	MACH_PORT_FACE default_pager_internal_set; /* Port set for internal objects. */
	104	MACH_PORT_FACE default_pager_external_set; /* Port set for external objects. */
	105
	106	#define DEFAULT_PAGER_INTERNAL_COUNT (4)
	107
	108
	109	/* Memory created by default_pager_object_create should mostly be resident. */
	110	#define DEFAULT_PAGER_EXTERNAL_COUNT (2)
	111
91447636	112	int default_pager_internal_count = DEFAULT_PAGER_INTERNAL_COUNT;
1c79356b	113	/* Number of "internal" threads. */
91447636	114	int default_pager_external_count = DEFAULT_PAGER_EXTERNAL_COUNT;
1c79356b A	115	/* Number of "external" threads. */
	116
	117	/*
	118	* Forward declarations.
	119	*/
	120	boolean_t default_pager_notify_server(mach_msg_header_t *,
	121	mach_msg_header_t *);
	122	boolean_t default_pager_demux_object(mach_msg_header_t *,
	123	mach_msg_header_t *);
	124	boolean_t default_pager_demux_default(mach_msg_header_t *,
	125	mach_msg_header_t *);
	126	default_pager_thread_t *start_default_pager_thread(int, boolean_t);
	127	void default_pager(void);
	128	void default_pager_thread(void *);
	129	void default_pager_initialize(void);
1c79356b A	130	boolean_t dp_parse_argument(char ); / forward; */
1c79356b A	131	unsigned int d_to_i(char ); / forward; */
1c79356b A	132
	133	extern int vstruct_def_clshift;
	134
	135
	136	/*
	137	* Initialize and Run the default pager
	138	*/
	139	void
	140	default_pager(void)
	141	{
	142	int i, id;
91447636	143	__unused static char here[] = "default_pager";
1c79356b A	144	default_pager_thread_t dpt;
	145	kern_return_t kr;
	146
	147
	148
	149	/*
	150	* Give me space for the thread array and zero it.
	151	*/
	152	i = default_pager_internal_count + default_pager_external_count + 1;
	153	dpt_array = (default_pager_thread_t **)
	154	kalloc(i * sizeof(default_pager_thread_t *));
	155	memset(dpt_array, 0, i * sizeof(default_pager_thread_t *));
	156
	157	/* Setup my thread structure. */
	158	id = 0;
	159	dpt.dpt_buffer = 0;
	160	dpt.dpt_internal = FALSE;
	161	dpt.dpt_initialized_p = TRUE;
	162	dpt_array[0] = &dpt;
	163
	164	/*
	165	* Now we create the threads that will actually
	166	* manage objects.
	167	*/
	168
	169	for (i = 0; i < default_pager_internal_count; i++) {
	170	dpt_array[id] = (default_pager_thread_t *)
	171	kalloc(sizeof (default_pager_thread_t));
	172	if (dpt_array[id] == NULL)
	173	Panic("alloc pager thread");
	174	kr = vm_allocate(kernel_map, &((dpt_array[id])->dpt_buffer),
91447636	175	vm_page_size << vstruct_def_clshift, VM_FLAGS_ANYWHERE);
1c79356b A	176	if (kr != KERN_SUCCESS)
	177	Panic("alloc thread buffer");
	178	kr = vm_map_wire(kernel_map, (dpt_array[id])->dpt_buffer,
	179	((dpt_array[id])->dpt_buffer)
	180	+(vm_page_size << vstruct_def_clshift),
	181	VM_PROT_DEFAULT,
	182	FALSE);
	183	if (kr != KERN_SUCCESS)
	184	Panic("wire thread buffer");
	185	(dpt_array[id])->dpt_internal = TRUE;
	186	(dpt_array[id])->dpt_initialized_p = TRUE;
	187	(dpt_array[id])->checked_out = FALSE;
	188	id++;
	189	}
	190	DPT_LOCK_INIT(dpt_lock);
	191	}
	192
	193
	194
	195
	196
	197
	198	/* simple utility: only works for 2^n */
	199	int
	200	local_log2(
	201	unsigned int n)
	202	{
	203	register int i = 0;
	204
	205	if(n == 0) return 0;
	206
	207	while ((n & 1) == 0) {
	208	i++;
	209	n >>= 1;
	210	}
	211	return i;
	212	}
	213
	214
	215
	216
	217	/* another simple utility, d_to_i(char*) supporting only decimal
	218	* and devoid of range checking; obscure name chosen deliberately
	219	* to avoid confusion with semantic-rich POSIX routines */
	220	unsigned int
	221	d_to_i(char * arg)
	222	{
	223	unsigned int rval = 0;
	224	char ch;
	225
	226	while ((ch = *arg++) && ch >= '0' && ch <= '9') {
	227	rval *= 10;
	228	rval += ch - '0';
	229	}
	230	return(rval);
	231	}
	232
	233
	234
	235
	236	/*
	237	* Check for non-disk-partition arguments of the form
	238	* attribute=argument
	239	* returning TRUE if one if found
240	*/
241	boolean_t dp_parse_argument(char *av)
242	{
243	char *rhs = av;
91447636	244	__unused static char here[] = "dp_parse_argument";
1c79356b A	245
	246	/* Check for '-v' flag */
	247
	248	if (av[0] == '-' && av[1] == 'v' && av[2] == 0) {
	249	verbose = TRUE ;
	250	return TRUE;
	251	}
	252
	253	/*
	254	* If we find a '=' followed by an argument in the string,
	255	* check for known arguments
	256	*/
	257	while (rhs && rhs != '=')
	258	rhs++;
	259	if (rhs && ++rhs) {
	260	/* clsize=N pages */
	261	if (strprefix(av,"cl")) {
	262	if (!bs_set_default_clsize(d_to_i(rhs)))
	263	dprintf(("Bad argument (%s) - ignored\n", av));
	264	return(TRUE);
	265	}
	266	/* else if strprefix(av,"another_argument")) {
	267	handle_another_argument(av);
	268	return(TRUE);
	269	} */
	270	}
	271	return(FALSE);
	272	}
	273
	274	int
91447636	275	start_def_pager( __unused char *bs_device )
1c79356b	276	{
1c79356b A	277	/*
	278	MACH_PORT_FACE master_device_port;
	279	*/
1c79356b	280	/*
55e303ae	281	MACH_PORT_FACE security_port;
1c79356b A	282	MACH_PORT_FACE root_ledger_wired;
	283	MACH_PORT_FACE root_ledger_paged;
	284	*/
91447636	285	__unused static char here[] = "main";
1c79356b A	286
	287
	288
	289	/*
	290	default_pager_host_port = ipc_port_make_send(realhost.host_priv_self);
	291	master_device_port = ipc_port_make_send(master_device_port);
	292	root_ledger_wired = ipc_port_make_send(root_wired_ledger_port);
	293	root_ledger_paged = ipc_port_make_send(root_paged_ledger_port);
1c79356b	294	security_port = ipc_port_make_send(realhost.host_security_self);
55e303ae	295	*/
1c79356b A	296
	297
	298	#if NORMA_VM
	299	norma_mk = 1;
	300	#else
	301	norma_mk = 0;
	302	#endif
	303
	304
	305	/* setup read buffers, etc */
	306	default_pager_initialize();
	307	default_pager();
55e303ae A	308
55e303ae A	309	/* start the backing store monitor, it runs on a callout thread */
91447636 A	310	default_pager_backing_store_monitor_callout =
	311	thread_call_allocate(default_pager_backing_store_monitor, NULL);
	312	if (!default_pager_backing_store_monitor_callout)
	313	panic("can't start backing store monitor thread");
	314	thread_call_enter(default_pager_backing_store_monitor_callout);
0c530ab8 A	315
0c530ab8 A	316	return (0);
1c79356b A	317	}
1c79356b A	318
1c79356b A	319	kern_return_t
1c79356b A	320	default_pager_info(
0b4e3aa0	321	memory_object_default_t pager,
1c79356b A	322	default_pager_info_t *infop)
	323	{
	324	vm_size_t pages_total, pages_free;
	325
0b4e3aa0	326	if (pager != default_pager_object)
1c79356b A	327	return KERN_INVALID_ARGUMENT;
	328
	329	bs_global_info(&pages_total, &pages_free);
	330
55e303ae A	331	infop->dpi_total_space = ptoa_32(pages_total);
55e303ae A	332	infop->dpi_free_space = ptoa_32(pages_free);
1c79356b A	333	infop->dpi_page_size = vm_page_size;
	334
	335	return KERN_SUCCESS;
	336	}
	337
	338
91447636 A	339	kern_return_t
	340	default_pager_info_64(
	341	memory_object_default_t pager,
	342	default_pager_info_64_t *infop)
	343	{
	344	vm_size_t pages_total, pages_free;
	345
	346	if (pager != default_pager_object)
	347	return KERN_INVALID_ARGUMENT;
	348
	349	bs_global_info(&pages_total, &pages_free);
	350
	351	infop->dpi_total_space = ptoa_64(pages_total);
	352	infop->dpi_free_space = ptoa_64(pages_free);
	353	infop->dpi_page_size = vm_page_size;
	354	infop->dpi_flags = 0;
	355	if (dp_encryption_inited && dp_encryption == TRUE) {
	356	infop->dpi_flags \|= DPI_ENCRYPTED;
	357	}
	358
	359	return KERN_SUCCESS;
	360	}
	361
	362
1c79356b	363	void
2d21ac55	364	default_pager_initialize(void)
1c79356b A	365	{
1c79356b A	366	kern_return_t kr;
91447636	367	__unused static char here[] = "default_pager_initialize";
1c79356b A	368
1c79356b A	369
0b4e3aa0 A	370	/*
	371	* Vm variables.
	372	*/
	373	vm_page_mask = vm_page_size - 1;
	374	vm_page_shift = local_log2(vm_page_size);
	375
	376	/*
	377	* List of all vstructs.
	378	*/
	379	vstruct_zone = zinit(sizeof(struct vstruct),
	380	10000 * sizeof(struct vstruct),
	381	8192, "vstruct zone");
	382	VSL_LOCK_INIT();
	383	queue_init(&vstruct_list.vsl_queue);
	384	vstruct_list.vsl_count = 0;
	385
	386	VSTATS_LOCK_INIT(&global_stats.gs_lock);
	387
	388	bs_initialize();
	389
1c79356b A	390	/*
	391	* Exported DMM port.
	392	*/
0b4e3aa0	393	default_pager_object = ipc_port_alloc_kernel();
1c79356b A	394
	395
	396	/*
	397	* Export pager interfaces.
	398	*/
	399	#ifdef USER_PAGER
	400	if ((kr = netname_check_in(name_server_port, "UserPager",
	401	default_pager_self,
0b4e3aa0	402	default_pager_object))
1c79356b A	403	!= KERN_SUCCESS) {
	404	dprintf(("netname_check_in returned 0x%x\n", kr));
	405	exit(1);
	406	}
	407	#else /* USER_PAGER */
	408	{
	409	int clsize;
0b4e3aa0	410	memory_object_default_t dmm;
1c79356b	411
0b4e3aa0	412	dmm = default_pager_object;
1c79356b	413	clsize = (vm_page_size << vstruct_def_clshift);
0b4e3aa0 A	414	kr = host_default_memory_manager(host_priv_self(), &dmm, clsize);
	415	if ((kr != KERN_SUCCESS) \|\|
	416	(dmm != MEMORY_OBJECT_DEFAULT_NULL))
1c79356b A	417	Panic("default memory manager");
	418
	419	}
	420	#endif /* USER_PAGER */
	421
	422
1c79356b A	423	}
1c79356b A	424