X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/55e303ae13a4cf49d70f2294092726f2fffb9ef2..b226f5e54a60dc81db17b1260381d7dbfea3cdf1:/osfmk/vm/vm_pageout.h diff --git a/osfmk/vm/vm_pageout.h b/osfmk/vm/vm_pageout.h index 0d3fa62fb..237205926 100644 --- a/osfmk/vm/vm_pageout.h +++ b/osfmk/vm/vm_pageout.h @@ -1,16 +1,19 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2009 Apple Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ - * - * Copyright (c) 1999-2003 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. Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. + * 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 @@ -20,7 +23,7 @@ * Please see the License for the specific language governing rights and * limitations under the License. * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ @@ -63,92 +66,321 @@ #ifndef _VM_VM_PAGEOUT_H_ #define _VM_VM_PAGEOUT_H_ +#ifdef KERNEL_PRIVATE + +#include #include #include -#include +#include + +#include +#include + +#include + + +#include + +#ifdef MACH_KERNEL_PRIVATE #include +#endif + +#include + +#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; +#endif + +#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 + + + +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_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_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); + +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); + +#ifdef XNU_KERNEL_PRIVATE + +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); + +#endif /* XNU_KERNEL_PRIVATE */ + +extern struct vnode * upl_lookup_vnode(upl_t upl); + +#ifndef MACH_KERNEL_PRIVATE +typedef struct vm_page *vm_page_t; +#endif + +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, + int flags, + vm_page_t * list); + +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 !CONFIG_EMBEDDED +extern kern_return_t vm_pageout_wait(uint64_t deadline); +#endif +#ifdef MACH_KERNEL_PRIVATE + +#include extern unsigned int vm_pageout_scan_event_counter; -extern unsigned int vm_zf_count; +extern unsigned int vm_page_anonymous_count; + /* - * The following ifdef only exists because XMM must (currently) - * be given a page at a time. This should be removed - * in the future. + * must hold the page queues lock to + * manipulate this structure */ -#define DATA_WRITE_MAX 16 -#define POINTER_T(copy) (pointer_t)(copy) +struct vm_pageout_queue { + vm_page_queue_head_t pgo_pending; /* laundry pages to be processed by pager's iothread */ + unsigned int pgo_laundry; /* current count of laundry pages on queue or in flight */ + unsigned int pgo_maxlaundry; + uint64_t pgo_tid; /* thread ID of I/O thread that services this queue */ + uint8_t pgo_lowpriority; /* iothread is set to use low priority I/O */ + + unsigned int 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_draining:1, + pgo_inited:1, + :0; +}; + +#define VM_PAGE_Q_THROTTLED(q) \ + ((q)->pgo_laundry >= (q)->pgo_maxlaundry) + +extern struct vm_pageout_queue vm_pageout_queue_internal; +extern struct vm_pageout_queue vm_pageout_queue_external; + /* - * Exported routines. + * Routines exported to Mach. */ extern void vm_pageout(void); -extern vm_object_t vm_pageout_object_allocate( - vm_page_t m, - vm_size_t size, - vm_object_offset_t offset); +extern kern_return_t vm_pageout_internal_start(void); extern void vm_pageout_object_terminate( vm_object_t object); -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); extern void vm_pageout_initialize_page( vm_page_t m); -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_pageclean_copy( - vm_page_t m, - vm_page_t new_m, - vm_object_t new_object, - vm_object_offset_t new_offset); - /* UPL exported routines and structures */ -#define UPL_COMPOSITE_PAGE_LIST_MAX 16 +#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 -#define upl_lock_init(object) mutex_init(&(object)->Lock, ETAP_VM_OBJ) -#define upl_lock(object) mutex_lock(&(object)->Lock) -#define upl_unlock(object) mutex_unlock(&(object)->Lock) +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 */ + decl_lck_mtx_data(, Lock) /* Synchronization */ int ref_count; + int ext_ref_count; int flags; - vm_object_t src_object; /* object derived from */ vm_object_offset_t offset; - vm_size_t size; /* size in bytes of the address space */ + upl_size_t size; /* size in bytes of the address space */ vm_offset_t kaddr; /* secondary mapping in kernel */ vm_object_t map_object; -#ifdef UBC_DEBUG - unsigned int ubc_alias1; - unsigned int ubc_alias2; + 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 /* UBC_DEBUG */ - +#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 @@ -160,22 +392,372 @@ struct upl { #define UPL_PAGEOUT 0x80 #define UPL_LITE 0x100 #define UPL_IO_WIRE 0x200 - -#define UPL_PAGE_TICKET_MASK 0xF00 -#define UPL_PAGE_TICKET_SHIFT 8 - - +#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_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, + 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, + 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); + +/* should be just a regular vm_map_remove() */ +extern kern_return_t vm_map_remove_upl( + vm_map_t map, + upl_t upl); +/* wired page list structure */ +typedef uint32_t *wpl_array_t; + +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); + +extern kern_return_t vm_paging_map_object( + 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) +/* + * 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); + +extern kern_return_t upl_transpose( + 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(void); + +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 */ +}; -/* wired page list structure */ -typedef unsigned long *wpl_array_t; +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; +}; +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_ */