/*
- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2020 Apple 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
* 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,
* 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) 1991,1990,1989,1988,1987 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.
*/
* Declarations for the pageout daemon interface.
*/
-#ifndef _VM_VM_PAGEOUT_H_
+#ifndef _VM_VM_PAGEOUT_H_
#define _VM_VM_PAGEOUT_H_
-#ifdef KERNEL_PRIVATE
+#ifdef KERNEL_PRIVATE
#include <mach/mach_types.h>
#include <mach/boolean.h>
#include <mach/memory_object_types.h>
#include <kern/kern_types.h>
-#include <kern/lock.h>
+#include <kern/locks.h>
-extern kern_return_t vm_map_create_upl(
- vm_map_t map,
- vm_map_address_t offset,
- upl_size_t *upl_size,
- upl_t *upl,
- upl_page_info_array_t page_list,
- unsigned int *count,
- int *flags);
+#include <libkern/OSAtomic.h>
+
+
+#include <vm/vm_options.h>
+
+#ifdef MACH_KERNEL_PRIVATE
+#include <vm/vm_page.h>
+#endif
+
+#include <sys/kdebug.h>
+
+#define VM_PAGE_AVAILABLE_COUNT() ((unsigned int)(vm_page_cleaned_count))
+
+/* externally manipulated counters */
+extern unsigned int vm_pageout_cleaned_fault_reactivated;
+
+#if CONFIG_FREEZE
+extern boolean_t memorystatus_freeze_enabled;
+
+struct freezer_context {
+ /*
+ * All these counters & variables track the task
+ * being frozen.
+ * Currently we only freeze one task at a time. Should that
+ * change, we'll need to add support for multiple freezer contexts.
+ */
+
+ task_t freezer_ctx_task; /* Task being frozen. */
+
+ void *freezer_ctx_chead; /* The chead used to track c_segs allocated */
+ /* to freeze the task.*/
+
+ uint64_t freezer_ctx_swapped_bytes; /* Tracks # of compressed bytes.*/
+
+ int freezer_ctx_uncompressed_pages; /* Tracks # of uncompressed pages frozen. */
+
+ char *freezer_ctx_compressor_scratch_buf; /* Scratch buffer for the compressor algorithm. */
+};
+
+#endif /* CONFIG_FREEZE */
+
+#define VM_DYNAMIC_PAGING_ENABLED() (VM_CONFIG_COMPRESSOR_IS_ACTIVE)
+
+#if VM_PRESSURE_EVENTS
+extern boolean_t vm_pressure_events_enabled;
+#endif /* VM_PRESSURE_EVENTS */
+
+
+/*
+ * the following codes are used in the DBG_MACH_WORKINGSET subclass
+ * of the DBG_MACH class
+ */
+#define VM_DISCONNECT_ALL_PAGE_MAPPINGS 0x00
+#define VM_DISCONNECT_TASK_PAGE_MAPPINGS 0x01
+#define VM_REAL_FAULT_ADDR_INTERNAL 0x02
+#define VM_REAL_FAULT_ADDR_PURGABLE 0x03
+#define VM_REAL_FAULT_ADDR_EXTERNAL 0x04
+#define VM_REAL_FAULT_ADDR_SHAREDCACHE 0x05
+#define VM_REAL_FAULT_FAST 0x06
+#define VM_REAL_FAULT_SLOW 0x07
+#define VM_MAP_LOOKUP_OBJECT 0x08
+
+
+
+extern int vm_debug_events;
+
+#define VMF_CHECK_ZFDELAY 0x100
+#define VMF_COWDELAY 0x101
+#define VMF_ZFDELAY 0x102
+#define VMF_COMPRESSORDELAY 0x103
+
+#define VM_PAGEOUT_SCAN 0x104
+#define VM_PAGEOUT_BALANCE 0x105
+#define VM_PAGEOUT_FREELIST 0x106
+#define VM_PAGEOUT_PURGEONE 0x107
+#define VM_PAGEOUT_CACHE_EVICT 0x108
+#define VM_PAGEOUT_THREAD_BLOCK 0x109
+#define VM_PAGEOUT_JETSAM 0x10A
+#define VM_INFO1 0x10B
+#define VM_INFO2 0x10C
+#define VM_INFO3 0x10D
+#define VM_INFO4 0x10E
+#define VM_INFO5 0x10F
+#define VM_INFO6 0x110
+#define VM_INFO7 0x111
+#define VM_INFO8 0x112
+#define VM_INFO9 0x113
+
+#define VM_UPL_PAGE_WAIT 0x120
+#define VM_IOPL_PAGE_WAIT 0x121
+#define VM_PAGE_WAIT_BLOCK 0x122
+
+#if CONFIG_IOSCHED
+#define VM_PAGE_SLEEP 0x123
+#define VM_PAGE_EXPEDITE 0x124
+#define VM_PAGE_EXPEDITE_NO_MEMORY 0x125
+#endif
+
+#define VM_PAGE_GRAB 0x126
+#define VM_PAGE_RELEASE 0x127
+#define VM_COMPRESSOR_COMPACT_AND_SWAP 0x128
+#define VM_COMPRESSOR_DO_DELAYED_COMPACTIONS 0x129
+
+
+#define VM_PRESSURE_EVENT 0x130
+#define VM_EXECVE 0x131
+#define VM_WAKEUP_COMPACTOR_SWAPPER 0x132
+#define VM_UPL_REQUEST 0x133
+#define VM_IOPL_REQUEST 0x134
+#define VM_KERN_REQUEST 0x135
+
+#define VM_DATA_WRITE 0x140
+
+#define VM_PRESSURE_LEVEL_CHANGE 0x141
+
+#define VM_PHYS_WRITE_ACCT 0x142
+
+#define VM_DEBUG_EVENT(name, event, control, arg1, arg2, arg3, arg4) \
+ MACRO_BEGIN \
+ if (__improbable(vm_debug_events)) { \
+ KERNEL_DEBUG_CONSTANT((MACHDBG_CODE(DBG_MACH_VM, event)) | control, arg1, arg2, arg3, arg4, 0); \
+ } \
+ MACRO_END
+
+#define VM_DEBUG_CONSTANT_EVENT(name, event, control, arg1, arg2, arg3, arg4) \
+ MACRO_BEGIN \
+ KERNEL_DEBUG_CONSTANT((MACHDBG_CODE(DBG_MACH_VM, event)) | control, arg1, arg2, arg3, arg4, 0); \
+ MACRO_END
+
+extern void memoryshot(unsigned int event, unsigned int control);
+
+extern void update_vm_info(void);
+
+#if CONFIG_IOSCHED
+extern int upl_get_cached_tier(
+ upl_t upl);
+#endif
+
+extern void upl_set_iodone(upl_t, void *);
+extern void upl_set_iodone_error(upl_t, int);
+extern void upl_callout_iodone(upl_t);
extern ppnum_t upl_get_highest_page(
- upl_t upl);
+ upl_t upl);
+
+extern upl_size_t upl_get_size(
+ upl_t upl);
+
+extern upl_t upl_associated_upl(upl_t upl);
+extern void upl_set_associated_upl(upl_t upl, upl_t associated_upl);
+
+#ifndef MACH_KERNEL_PRIVATE
+typedef struct vm_page *vm_page_t;
+#endif
+#ifdef XNU_KERNEL_PRIVATE
+#include <vm/vm_kern.h>
+
+extern upl_size_t upl_adjusted_size(
+ upl_t upl,
+ vm_map_offset_t page_mask);
+extern vm_object_offset_t upl_adjusted_offset(
+ upl_t upl,
+ vm_map_offset_t page_mask);
+extern vm_object_offset_t upl_get_data_offset(
+ upl_t upl);
+
+extern kern_return_t vm_map_create_upl(
+ vm_map_t map,
+ vm_map_address_t offset,
+ upl_size_t *upl_size,
+ upl_t *upl,
+ upl_page_info_array_t page_list,
+ unsigned int *count,
+ upl_control_flags_t *flags,
+ vm_tag_t tag);
+
+extern void iopl_valid_data(
+ upl_t upl_ptr,
+ vm_tag_t tag);
+
+extern void vm_page_free_list(
+ vm_page_t mem,
+ boolean_t prepare_object);
+
+extern kern_return_t vm_page_alloc_list(
+ int page_count,
+ kma_flags_t flags,
+ vm_page_t *list);
+
+#endif /* XNU_KERNEL_PRIVATE */
+
+extern struct vnode * upl_lookup_vnode(upl_t upl);
-#ifdef MACH_KERNEL_PRIVATE
+extern void vm_page_set_offset(vm_page_t page, vm_object_offset_t offset);
+extern vm_object_offset_t vm_page_get_offset(vm_page_t page);
+extern ppnum_t vm_page_get_phys_page(vm_page_t page);
+extern vm_page_t vm_page_get_next(vm_page_t page);
+
+extern kern_return_t mach_vm_pressure_level_monitor(boolean_t wait_for_pressure, unsigned int *pressure_level);
+
+#if XNU_TARGET_OS_OSX
+extern kern_return_t vm_pageout_wait(uint64_t deadline);
+#endif /* XNU_TARGET_OS_OSX */
+
+#ifdef MACH_KERNEL_PRIVATE
#include <vm/vm_page.h>
-extern unsigned int vm_pageout_scan_event_counter;
-extern unsigned int vm_zf_count;
+extern unsigned int vm_pageout_scan_event_counter;
+extern unsigned int vm_page_anonymous_count;
+
/*
- * Routines exported to Mach.
+ * must hold the page queues lock to
+ * manipulate this structure
*/
-extern void vm_pageout(void);
+struct vm_pageout_queue {
+ vm_page_queue_head_t pgo_pending; /* laundry pages to be processed by pager's iothread */
+ uint64_t pgo_tid; /* thread ID of I/O thread that services this queue */
+ unsigned int pgo_laundry; /* current count of laundry pages on queue or in flight */
+ unsigned int pgo_maxlaundry;
+
+ uint32_t
+ pgo_idle:1, /* iothread is blocked waiting for work to do */
+ pgo_busy:1, /* iothread is currently processing request from pgo_pending */
+ pgo_throttled:1, /* vm_pageout_scan thread needs a wakeup when pgo_laundry drops */
+ pgo_lowpriority:1, /* iothread is set to use low priority I/O */
+ pgo_draining:1,
+ pgo_inited:1,
+ pgo_unused_bits:26;
+};
-extern vm_object_t vm_pageout_object_allocate(
- vm_page_t m,
- vm_size_t size,
- vm_object_offset_t offset);
+#define VM_PAGE_Q_THROTTLED(q) \
+ ((q)->pgo_laundry >= (q)->pgo_maxlaundry)
-extern void vm_pageout_object_terminate(
- vm_object_t object);
+extern struct vm_pageout_queue vm_pageout_queue_internal;
+extern struct vm_pageout_queue vm_pageout_queue_external;
-extern vm_page_t vm_pageout_setup(
- vm_page_t m,
- vm_object_t new_object,
- vm_object_offset_t new_offset);
-extern void vm_pageout_cluster(
- vm_page_t m);
+/*
+ * Routines exported to Mach.
+ */
+extern void vm_pageout(void);
+
+extern kern_return_t vm_pageout_internal_start(void);
-extern void vm_pageout_initialize_page(
- vm_page_t m);
+extern void vm_pageout_object_terminate(
+ vm_object_t object);
-extern void vm_pageclean_setup(
- vm_page_t m,
- vm_page_t new_m,
- vm_object_t new_object,
- vm_object_offset_t new_offset);
+extern void vm_pageout_cluster(
+ vm_page_t m);
-extern void vm_pageclean_copy(
- vm_page_t m,
- vm_page_t new_m,
- vm_object_t new_object,
- vm_object_offset_t new_offset);
+extern void vm_pageout_initialize_page(
+ vm_page_t m);
/* UPL exported routines and structures */
-#define upl_lock_init(object) mutex_init(&(object)->Lock, 0)
-#define upl_lock(object) mutex_lock(&(object)->Lock)
-#define upl_unlock(object) mutex_unlock(&(object)->Lock)
+#define upl_lock_init(object) lck_mtx_init(&(object)->Lock, &vm_object_lck_grp, &vm_object_lck_attr)
+#define upl_lock_destroy(object) lck_mtx_destroy(&(object)->Lock, &vm_object_lck_grp)
+#define upl_lock(object) lck_mtx_lock(&(object)->Lock)
+#define upl_unlock(object) lck_mtx_unlock(&(object)->Lock)
+#define upl_try_lock(object) lck_mtx_try_lock(&(object)->Lock)
+
+#define MAX_VECTOR_UPL_ELEMENTS 8
+
+struct _vector_upl_iostates {
+ upl_offset_t offset;
+ upl_size_t size;
+};
+
+typedef struct _vector_upl_iostates vector_upl_iostates_t;
+
+struct _vector_upl {
+ upl_size_t size;
+ uint32_t num_upls;
+ uint32_t invalid_upls;
+ uint32_t _reserved;
+ vm_map_t submap;
+ vm_offset_t submap_dst_addr;
+ vm_object_offset_t offset;
+ upl_t upl_elems[MAX_VECTOR_UPL_ELEMENTS];
+ upl_page_info_array_t pagelist;
+ vector_upl_iostates_t upl_iostates[MAX_VECTOR_UPL_ELEMENTS];
+};
+typedef struct _vector_upl* vector_upl_t;
/* universal page list structure */
+#if UPL_DEBUG
+#define UPL_DEBUG_STACK_FRAMES 16
+#define UPL_DEBUG_COMMIT_RECORDS 4
+
+struct ucd {
+ upl_offset_t c_beg;
+ upl_offset_t c_end;
+ int c_aborted;
+ void * c_retaddr[UPL_DEBUG_STACK_FRAMES];
+};
+#endif
+
+struct upl_io_completion {
+ void *io_context;
+ void (*io_done)(void *, int);
+
+ int io_error;
+};
+
+
struct upl {
- decl_mutex_data(, Lock) /* Synchronization */
- int ref_count;
- int flags;
- vm_object_t src_object; /* object derived from */
- vm_object_offset_t offset;
- upl_size_t size; /* size in bytes of the address space */
- vm_offset_t kaddr; /* secondary mapping in kernel */
- vm_object_t map_object;
- ppnum_t highest_page;
-#ifdef UPL_DEBUG
- unsigned int ubc_alias1;
- unsigned int ubc_alias2;
- queue_chain_t uplq; /* List of outstanding upls on an obj */
-#endif /* UPL_DEBUG */
+ decl_lck_mtx_data(, Lock); /* Synchronization */
+ int ref_count;
+ int ext_ref_count;
+ int flags;
+ /*
+ * XXX CAUTION: to accomodate devices with "mixed page sizes",
+ * u_offset and u_size are now byte-aligned and no longer
+ * page-aligned, on all devices.
+ */
+ vm_object_offset_t u_offset;
+ upl_size_t u_size; /* size in bytes of the address space */
+ vm_offset_t kaddr; /* secondary mapping in kernel */
+ vm_object_t map_object;
+ ppnum_t highest_page;
+ void* vector_upl;
+ upl_t associated_upl;
+ struct upl_io_completion *upl_iodone;
+#if CONFIG_IOSCHED
+ int upl_priority;
+ uint64_t *upl_reprio_info;
+ void *decmp_io_upl;
+#endif
+#if CONFIG_IOSCHED || UPL_DEBUG
+ thread_t upl_creator;
+ queue_chain_t uplq; /* List of outstanding upls on an obj */
+#endif
+#if UPL_DEBUG
+ uintptr_t ubc_alias1;
+ uintptr_t ubc_alias2;
+
+ uint32_t upl_state;
+ uint32_t upl_commit_index;
+ void *upl_create_retaddr[UPL_DEBUG_STACK_FRAMES];
+
+ struct ucd upl_commit_records[UPL_DEBUG_COMMIT_RECORDS];
+#endif /* UPL_DEBUG */
};
/* upl struct flags */
-#define UPL_PAGE_LIST_MAPPED 0x1
-#define UPL_KERNEL_MAPPED 0x2
-#define UPL_CLEAR_DIRTY 0x4
-#define UPL_COMPOSITE_LIST 0x8
-#define UPL_INTERNAL 0x10
-#define UPL_PAGE_SYNC_DONE 0x20
-#define UPL_DEVICE_MEMORY 0x40
-#define UPL_PAGEOUT 0x80
-#define UPL_LITE 0x100
-#define UPL_IO_WIRE 0x200
-#define UPL_ACCESS_BLOCKED 0x400
-#define UPL_ENCRYPTED 0x800
-
+#define UPL_PAGE_LIST_MAPPED 0x1
+#define UPL_KERNEL_MAPPED 0x2
+#define UPL_CLEAR_DIRTY 0x4
+#define UPL_COMPOSITE_LIST 0x8
+#define UPL_INTERNAL 0x10
+#define UPL_PAGE_SYNC_DONE 0x20
+#define UPL_DEVICE_MEMORY 0x40
+#define UPL_PAGEOUT 0x80
+#define UPL_LITE 0x100
+#define UPL_IO_WIRE 0x200
+#define UPL_ACCESS_BLOCKED 0x400
+#define UPL_SHADOWED 0x1000
+#define UPL_KERNEL_OBJECT 0x2000
+#define UPL_VECTOR 0x4000
+#define UPL_SET_DIRTY 0x8000
+#define UPL_HAS_BUSY 0x10000
+#define UPL_TRACKED_BY_OBJECT 0x20000
+#define UPL_EXPEDITE_SUPPORTED 0x40000
+#define UPL_DECMP_REQ 0x80000
+#define UPL_DECMP_REAL_IO 0x100000
/* flags for upl_create flags parameter */
-#define UPL_CREATE_EXTERNAL 0
-#define UPL_CREATE_INTERNAL 0x1
-#define UPL_CREATE_LITE 0x2
+#define UPL_CREATE_EXTERNAL 0
+#define UPL_CREATE_INTERNAL 0x1
+#define UPL_CREATE_LITE 0x2
+#define UPL_CREATE_IO_TRACKING 0x4
+#define UPL_CREATE_EXPEDITE_SUP 0x8
+
+extern upl_t vector_upl_create(vm_offset_t);
+extern void vector_upl_deallocate(upl_t);
+extern boolean_t vector_upl_is_valid(upl_t);
+extern boolean_t vector_upl_set_subupl(upl_t, upl_t, u_int32_t);
+extern void vector_upl_set_pagelist(upl_t);
+extern void vector_upl_set_submap(upl_t, vm_map_t, vm_offset_t);
+extern void vector_upl_get_submap(upl_t, vm_map_t*, vm_offset_t*);
+extern void vector_upl_set_iostate(upl_t, upl_t, upl_offset_t, upl_size_t);
+extern void vector_upl_get_iostate(upl_t, upl_t, upl_offset_t*, upl_size_t*);
+extern void vector_upl_get_iostate_byindex(upl_t, uint32_t, upl_offset_t*, upl_size_t*);
+extern upl_t vector_upl_subupl_byindex(upl_t, uint32_t);
+extern upl_t vector_upl_subupl_byoffset(upl_t, upl_offset_t*, upl_size_t*);
+
+extern void vm_object_set_pmap_cache_attr(
+ vm_object_t object,
+ upl_page_info_array_t user_page_list,
+ unsigned int num_pages,
+ boolean_t batch_pmap_op);
extern kern_return_t vm_object_iopl_request(
- vm_object_t object,
- vm_object_offset_t offset,
- upl_size_t size,
- upl_t *upl_ptr,
- upl_page_info_array_t user_page_list,
- unsigned int *page_list_count,
- int cntrl_flags);
+ vm_object_t object,
+ vm_object_offset_t offset,
+ upl_size_t size,
+ upl_t *upl_ptr,
+ upl_page_info_array_t user_page_list,
+ unsigned int *page_list_count,
+ upl_control_flags_t cntrl_flags,
+ vm_tag_t tag);
extern kern_return_t vm_object_super_upl_request(
- vm_object_t object,
- vm_object_offset_t offset,
- upl_size_t size,
- upl_size_t super_cluster,
- upl_t *upl,
- upl_page_info_t *user_page_list,
- unsigned int *page_list_count,
- int cntrl_flags);
+ vm_object_t object,
+ vm_object_offset_t offset,
+ upl_size_t size,
+ upl_size_t super_cluster,
+ upl_t *upl,
+ upl_page_info_t *user_page_list,
+ unsigned int *page_list_count,
+ upl_control_flags_t cntrl_flags,
+ vm_tag_t tag);
/* should be just a regular vm_map_enter() */
extern kern_return_t vm_map_enter_upl(
- vm_map_t map,
- upl_t upl,
- vm_map_offset_t *dst_addr);
+ vm_map_t map,
+ upl_t upl,
+ vm_map_offset_t *dst_addr);
/* should be just a regular vm_map_remove() */
extern kern_return_t vm_map_remove_upl(
- vm_map_t map,
- upl_t upl);
-
-#ifdef UPL_DEBUG
-extern kern_return_t upl_ubc_alias_set(
- upl_t upl,
- unsigned int alias1,
- unsigned int alias2);
-extern int upl_ubc_alias_get(
- upl_t upl,
- unsigned int * al,
- unsigned int * al2);
-#endif /* UPL_DEBUG */
+ vm_map_t map,
+ upl_t upl);
/* wired page list structure */
-typedef unsigned long *wpl_array_t;
+typedef uint32_t *wpl_array_t;
+
+extern struct vm_page_delayed_work*
+vm_page_delayed_work_get_ctx(void);
+
+extern void
+vm_page_delayed_work_finish_ctx(struct vm_page_delayed_work* dwp);
-extern void vm_page_free_list(
- register vm_page_t mem);
-
extern void vm_page_free_reserve(int pages);
extern void vm_pageout_throttle_down(vm_page_t page);
extern void vm_pageout_throttle_up(vm_page_t page);
-/*
- * ENCRYPTED SWAP:
- */
-extern void upl_encrypt(
- upl_t upl,
- upl_offset_t crypt_offset,
- upl_size_t crypt_size);
-extern void vm_page_encrypt(
- vm_page_t page,
- vm_map_offset_t kernel_map_offset);
-extern boolean_t vm_pages_encrypted; /* are there encrypted pages ? */
-extern void vm_page_decrypt(
- vm_page_t page,
- vm_map_offset_t kernel_map_offset);
extern kern_return_t vm_paging_map_object(
- vm_map_offset_t *address,
- vm_page_t page,
- vm_object_t object,
- vm_object_offset_t offset,
- vm_map_size_t *size);
+ vm_page_t page,
+ vm_object_t object,
+ vm_object_offset_t offset,
+ vm_prot_t protection,
+ boolean_t can_unlock_object,
+ vm_map_size_t *size, /* IN/OUT */
+ vm_map_offset_t *address, /* OUT */
+ boolean_t *need_unmap); /* OUT */
extern void vm_paging_unmap_object(
- vm_object_t object,
- vm_map_offset_t start,
- vm_map_offset_t end);
-decl_simple_lock_data(extern, vm_paging_lock)
+ vm_object_t object,
+ vm_map_offset_t start,
+ vm_map_offset_t end);
+decl_simple_lock_data(extern, vm_paging_lock);
/*
* Backing store throttle when BS is exhausted
*/
extern unsigned int vm_backing_store_low;
+extern void vm_pageout_steal_laundry(
+ vm_page_t page,
+ boolean_t queues_locked);
+
#endif /* MACH_KERNEL_PRIVATE */
+#if UPL_DEBUG
+extern kern_return_t upl_ubc_alias_set(
+ upl_t upl,
+ uintptr_t alias1,
+ uintptr_t alias2);
+extern int upl_ubc_alias_get(
+ upl_t upl,
+ uintptr_t * al,
+ uintptr_t * al2);
+#endif /* UPL_DEBUG */
+
extern void vm_countdirtypages(void);
extern void vm_backing_store_disable(
- boolean_t suspend);
+ boolean_t suspend);
extern kern_return_t upl_transpose(
- upl_t upl1,
- upl_t upl2);
+ upl_t upl1,
+ upl_t upl2);
+
+extern kern_return_t mach_vm_pressure_monitor(
+ boolean_t wait_for_pressure,
+ unsigned int nsecs_monitored,
+ unsigned int *pages_reclaimed_p,
+ unsigned int *pages_wanted_p);
+
+extern kern_return_t
+vm_set_buffer_cleanup_callout(
+ boolean_t (*func)(int));
+
+struct vm_page_stats_reusable {
+ SInt32 reusable_count;
+ uint64_t reusable;
+ uint64_t reused;
+ uint64_t reused_wire;
+ uint64_t reused_remove;
+ uint64_t all_reusable_calls;
+ uint64_t partial_reusable_calls;
+ uint64_t all_reuse_calls;
+ uint64_t partial_reuse_calls;
+ uint64_t reusable_pages_success;
+ uint64_t reusable_pages_failure;
+ uint64_t reusable_pages_shared;
+ uint64_t reuse_pages_success;
+ uint64_t reuse_pages_failure;
+ uint64_t can_reuse_success;
+ uint64_t can_reuse_failure;
+ uint64_t reusable_reclaimed;
+ uint64_t reusable_nonwritable;
+ uint64_t reusable_shared;
+ uint64_t free_shared;
+};
+extern struct vm_page_stats_reusable vm_page_stats_reusable;
+
+extern int hibernate_flush_memory(void);
+extern void hibernate_reset_stats(void);
+extern void hibernate_create_paddr_map(void);
+
+extern void vm_set_restrictions(unsigned int num_cpus);
-#endif /* KERNEL_PRIVATE */
+extern int vm_compressor_mode;
+extern kern_return_t vm_pageout_compress_page(void **, char *, vm_page_t);
+extern void vm_pageout_anonymous_pages(void);
+extern void vm_pageout_disconnect_all_pages(void);
+
+
+struct vm_config {
+ boolean_t compressor_is_present; /* compressor is initialized and can be used by the freezer, the sweep or the pager */
+ boolean_t compressor_is_active; /* pager can actively compress pages... 'compressor_is_present' must be set */
+ boolean_t swap_is_present; /* swap is initialized and can be used by the freezer, the sweep or the pager */
+ boolean_t swap_is_active; /* pager can actively swap out compressed segments... 'swap_is_present' must be set */
+ boolean_t freezer_swap_is_active; /* freezer can swap out frozen tasks... "compressor_is_present + swap_is_present" must be set */
+};
+
+extern struct vm_config vm_config;
+
+
+#define VM_PAGER_NOT_CONFIGURED 0x0 /* no compresser or swap configured */
+#define VM_PAGER_DEFAULT 0x1 /* Use default pager... DEPRECATED */
+#define VM_PAGER_COMPRESSOR_NO_SWAP 0x2 /* Active in-core compressor only. */
+#define VM_PAGER_COMPRESSOR_WITH_SWAP 0x4 /* Active in-core compressor + swap backend. */
+#define VM_PAGER_FREEZER_DEFAULT 0x8 /* Freezer backed by default pager... DEPRECATED */
+#define VM_PAGER_FREEZER_COMPRESSOR_NO_SWAP 0x10 /* Freezer backed by in-core compressor only i.e. frozen data remain in-core compressed.*/
+#define VM_PAGER_COMPRESSOR_NO_SWAP_PLUS_FREEZER_COMPRESSOR_WITH_SWAP 0x20 /* Active in-core compressor + Freezer backed by in-core compressor with swap support too.*/
+
+#define VM_PAGER_MAX_MODES 6 /* Total number of vm compressor modes supported */
+
+
+#define VM_CONFIG_COMPRESSOR_IS_PRESENT (vm_config.compressor_is_present == TRUE)
+#define VM_CONFIG_COMPRESSOR_IS_ACTIVE (vm_config.compressor_is_active == TRUE)
+#define VM_CONFIG_SWAP_IS_PRESENT (vm_config.swap_is_present == TRUE)
+#define VM_CONFIG_SWAP_IS_ACTIVE (vm_config.swap_is_active == TRUE)
+#define VM_CONFIG_FREEZER_SWAP_IS_ACTIVE (vm_config.freezer_swap_is_active == TRUE)
+
+#endif /* KERNEL_PRIVATE */
+
+#ifdef XNU_KERNEL_PRIVATE
+
+struct vm_pageout_state {
+ boolean_t vm_pressure_thread_running;
+ boolean_t vm_pressure_changed;
+ boolean_t vm_restricted_to_single_processor;
+ int vm_compressor_thread_count;
+
+ unsigned int vm_page_speculative_q_age_ms;
+ unsigned int vm_page_speculative_percentage;
+ unsigned int vm_page_speculative_target;
+
+ unsigned int vm_pageout_swap_wait;
+ unsigned int vm_pageout_idle_wait; /* milliseconds */
+ unsigned int vm_pageout_empty_wait; /* milliseconds */
+ unsigned int vm_pageout_burst_wait; /* milliseconds */
+ unsigned int vm_pageout_deadlock_wait; /* milliseconds */
+ unsigned int vm_pageout_deadlock_relief;
+ unsigned int vm_pageout_burst_inactive_throttle;
+
+ unsigned int vm_pageout_inactive;
+ unsigned int vm_pageout_inactive_used; /* debugging */
+ unsigned int vm_pageout_inactive_clean; /* debugging */
+
+ uint32_t vm_page_filecache_min;
+ uint32_t vm_page_filecache_min_divisor;
+ uint32_t vm_page_xpmapped_min;
+ uint32_t vm_page_xpmapped_min_divisor;
+ uint64_t vm_pageout_considered_page_last;
+
+ int vm_page_free_count_init;
+
+ unsigned int vm_memory_pressure;
+
+ int memorystatus_purge_on_critical;
+ int memorystatus_purge_on_warning;
+ int memorystatus_purge_on_urgent;
+
+ thread_t vm_pageout_external_iothread;
+ thread_t vm_pageout_internal_iothread;
+};
+
+extern struct vm_pageout_state vm_pageout_state;
+
+/*
+ * This structure is used to track the VM_INFO instrumentation
+ */
+struct vm_pageout_vminfo {
+ unsigned long vm_pageout_considered_page;
+ unsigned long vm_pageout_considered_bq_internal;
+ unsigned long vm_pageout_considered_bq_external;
+ unsigned long vm_pageout_skipped_external;
+
+ unsigned long vm_pageout_pages_evicted;
+ unsigned long vm_pageout_pages_purged;
+ unsigned long vm_pageout_freed_cleaned;
+ unsigned long vm_pageout_freed_speculative;
+ unsigned long vm_pageout_freed_external;
+ unsigned long vm_pageout_freed_internal;
+ unsigned long vm_pageout_inactive_dirty_internal;
+ unsigned long vm_pageout_inactive_dirty_external;
+ unsigned long vm_pageout_inactive_referenced;
+ unsigned long vm_pageout_reactivation_limit_exceeded;
+ unsigned long vm_pageout_inactive_force_reclaim;
+ unsigned long vm_pageout_inactive_nolock;
+ unsigned long vm_pageout_filecache_min_reactivated;
+ unsigned long vm_pageout_scan_inactive_throttled_internal;
+ unsigned long vm_pageout_scan_inactive_throttled_external;
+
+ uint64_t vm_pageout_compressions;
+ uint64_t vm_compressor_pages_grabbed;
+ unsigned long vm_compressor_failed;
+
+ unsigned long vm_page_pages_freed;
+
+ unsigned long vm_phantom_cache_found_ghost;
+ unsigned long vm_phantom_cache_added_ghost;
+};
+
+extern struct vm_pageout_vminfo vm_pageout_vminfo;
+
+
+#if DEVELOPMENT || DEBUG
+
+/*
+ * This structure records the pageout daemon's actions:
+ * how many pages it looks at and what happens to those pages.
+ * No locking needed because only one thread modifies the fields.
+ */
+struct vm_pageout_debug {
+ uint32_t vm_pageout_balanced;
+ uint32_t vm_pageout_scan_event_counter;
+ uint32_t vm_pageout_speculative_dirty;
+
+ uint32_t vm_pageout_inactive_busy;
+ uint32_t vm_pageout_inactive_absent;
+ uint32_t vm_pageout_inactive_notalive;
+ uint32_t vm_pageout_inactive_error;
+ uint32_t vm_pageout_inactive_deactivated;
+
+ uint32_t vm_pageout_enqueued_cleaned;
+
+ uint32_t vm_pageout_cleaned_busy;
+ uint32_t vm_pageout_cleaned_nolock;
+ uint32_t vm_pageout_cleaned_reference_reactivated;
+ uint32_t vm_pageout_cleaned_volatile_reactivated;
+ uint32_t vm_pageout_cleaned_reactivated; /* debugging; how many cleaned pages are found to be referenced on pageout (and are therefore reactivated) */
+ uint32_t vm_pageout_cleaned_fault_reactivated;
+
+ uint32_t vm_pageout_dirty_no_pager;
+ uint32_t vm_pageout_purged_objects;
+
+ uint32_t vm_pageout_scan_throttle;
+ uint32_t vm_pageout_scan_reclaimed_throttled;
+ uint32_t vm_pageout_scan_burst_throttle;
+ uint32_t vm_pageout_scan_empty_throttle;
+ uint32_t vm_pageout_scan_swap_throttle;
+ uint32_t vm_pageout_scan_deadlock_detected;
+ uint32_t vm_pageout_scan_inactive_throttle_success;
+ uint32_t vm_pageout_scan_throttle_deferred;
+
+ uint32_t vm_pageout_inactive_external_forced_jetsam_count;
+
+ uint32_t vm_grab_anon_overrides;
+ uint32_t vm_grab_anon_nops;
+
+ uint32_t vm_pageout_no_victim;
+ unsigned long vm_pageout_throttle_up_count;
+ uint32_t vm_page_steal_pageout_page;
+
+ uint32_t vm_cs_validated_resets;
+ uint32_t vm_object_iopl_request_sleep_for_cleaning;
+ uint32_t vm_page_slide_counter;
+ uint32_t vm_page_slide_errors;
+ uint32_t vm_page_throttle_count;
+ /*
+ * Statistics about UPL enforcement of copy-on-write obligations.
+ */
+ unsigned long upl_cow;
+ unsigned long upl_cow_again;
+ unsigned long upl_cow_pages;
+ unsigned long upl_cow_again_pages;
+ unsigned long iopl_cow;
+ unsigned long iopl_cow_pages;
+};
-#endif /* _VM_VM_PAGEOUT_H_ */
+extern struct vm_pageout_debug vm_pageout_debug;
+
+#define VM_PAGEOUT_DEBUG(member, value) \
+ MACRO_BEGIN \
+ vm_pageout_debug.member += value; \
+ MACRO_END
+#else
+#define VM_PAGEOUT_DEBUG(member, value)
+#endif
+
+#define MAX_COMPRESSOR_THREAD_COUNT 8
+
+#if DEVELOPMENT || DEBUG
+typedef struct vmct_stats_s {
+ uint64_t vmct_runtimes[MAX_COMPRESSOR_THREAD_COUNT];
+ uint64_t vmct_pages[MAX_COMPRESSOR_THREAD_COUNT];
+ uint64_t vmct_iterations[MAX_COMPRESSOR_THREAD_COUNT];
+ uint64_t vmct_cthreads_total;
+ int32_t vmct_minpages[MAX_COMPRESSOR_THREAD_COUNT];
+ int32_t vmct_maxpages[MAX_COMPRESSOR_THREAD_COUNT];
+} vmct_stats_t;
+#endif
+#endif
+#endif /* _VM_VM_PAGEOUT_H_ */
projects / apple / xnu.git / blobdiff