X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/316670eb35587141e969394ae8537d66b9211e80..d26ffc64f583ab2d29df48f13518685602bc8832:/osfmk/vm/vm_resident.c diff --git a/osfmk/vm/vm_resident.c b/osfmk/vm/vm_resident.c index a548c0600..b34f1b2d5 100644 --- a/osfmk/vm/vm_resident.c +++ b/osfmk/vm/vm_resident.c @@ -64,6 +64,7 @@ #include #include +#include #include #include @@ -71,11 +72,13 @@ #include #include #include +#include #include #include #include #include #include +#include #include #include #include @@ -84,17 +87,34 @@ #include /* kernel_memory_allocate() */ #include #include +#include #include #include +#include #include #include #include +#include + +#if CONFIG_PHANTOM_CACHE +#include +#endif #include #include + +char vm_page_inactive_states[VM_PAGE_Q_STATE_ARRAY_SIZE]; +char vm_page_pageable_states[VM_PAGE_Q_STATE_ARRAY_SIZE]; +char vm_page_non_speculative_pageable_states[VM_PAGE_Q_STATE_ARRAY_SIZE]; +char vm_page_active_or_inactive_states[VM_PAGE_Q_STATE_ARRAY_SIZE]; + +#if CONFIG_SECLUDED_MEMORY +struct vm_page_secluded_data vm_page_secluded; +#endif /* CONFIG_SECLUDED_MEMORY */ + boolean_t hibernate_cleaning_in_progress = FALSE; boolean_t vm_page_free_verify = TRUE; @@ -118,8 +138,11 @@ __private_extern__ void vm_page_init_lck_grp(void); static void vm_page_free_prepare(vm_page_t page); static vm_page_t vm_page_grab_fictitious_common(ppnum_t phys_addr); +static void vm_tag_init(void); - +uint64_t vm_min_kernel_and_kext_address = VM_MIN_KERNEL_AND_KEXT_ADDRESS; +uint32_t vm_packed_from_vm_pages_array_mask = VM_PACKED_FROM_VM_PAGES_ARRAY; +uint32_t vm_packed_pointer_shift = VM_PACKED_POINTER_SHIFT; /* * Associated with page of user-allocatable memory is a @@ -145,7 +168,7 @@ uint32_t vm_page_pages; * or VP, table.] */ typedef struct { - vm_page_t pages; + vm_page_packed_t page_list; #if MACH_PAGE_HASH_STATS int cur_count; /* current count */ int hi_count; /* high water mark */ @@ -162,7 +185,34 @@ unsigned int vm_page_hash_shift; /* Shift for hash function */ uint32_t vm_page_bucket_hash; /* Basic bucket hash */ unsigned int vm_page_bucket_lock_count = 0; /* How big is array of locks? */ +#ifndef VM_TAG_ACTIVE_UPDATE +#error VM_TAG_ACTIVE_UPDATE +#endif +#ifndef VM_MAX_TAG_ZONES +#error VM_MAX_TAG_ZONES +#endif + +boolean_t vm_tag_active_update = VM_TAG_ACTIVE_UPDATE; lck_spin_t *vm_page_bucket_locks; +lck_spin_t vm_objects_wired_lock; +lck_spin_t vm_allocation_sites_lock; + +vm_allocation_site_t vm_allocation_sites_static[VM_KERN_MEMORY_FIRST_DYNAMIC + 1]; +vm_allocation_site_t * vm_allocation_sites[VM_MAX_TAG_VALUE]; +#if VM_MAX_TAG_ZONES +vm_allocation_zone_total_t ** vm_allocation_zone_totals; +#endif /* VM_MAX_TAG_ZONES */ + +vm_tag_t vm_allocation_tag_highest; + +#if VM_PAGE_BUCKETS_CHECK +boolean_t vm_page_buckets_check_ready = FALSE; +#if VM_PAGE_FAKE_BUCKETS +vm_page_bucket_t *vm_page_fake_buckets; /* decoy buckets */ +vm_map_offset_t vm_page_fake_buckets_start, vm_page_fake_buckets_end; +#endif /* VM_PAGE_FAKE_BUCKETS */ +#endif /* VM_PAGE_BUCKETS_CHECK */ + #if MACH_PAGE_HASH_STATS @@ -211,9 +261,15 @@ hash_debug(void) * module must use the PAGE_SIZE, PAGE_MASK and PAGE_SHIFT * constants. */ +#if defined(__arm__) || defined(__arm64__) +vm_size_t page_size; +vm_size_t page_mask; +int page_shift; +#else vm_size_t page_size = PAGE_SIZE; vm_size_t page_mask = PAGE_MASK; int page_shift = PAGE_SHIFT; +#endif /* * Resident page structures are initialized from @@ -226,6 +282,10 @@ int page_shift = PAGE_SHIFT; struct vm_page vm_page_template; vm_page_t vm_pages = VM_PAGE_NULL; +vm_page_t vm_page_array_beginning_addr; +vm_page_t vm_page_array_ending_addr; +vm_page_t vm_page_array_boundary; + unsigned int vm_pages_count = 0; ppnum_t vm_page_lowest = 0; @@ -237,13 +297,22 @@ ppnum_t vm_page_lowest = 0; unsigned int vm_colors; unsigned int vm_color_mask; /* mask is == (vm_colors-1) */ unsigned int vm_cache_geometry_colors = 0; /* set by hw dependent code during startup */ -queue_head_t vm_page_queue_free[MAX_COLORS]; +unsigned int vm_free_magazine_refill_limit = 0; + + +struct vm_page_queue_free_head { + vm_page_queue_head_t qhead; +} __attribute__((aligned(VM_PACKED_POINTER_ALIGNMENT))); + +struct vm_page_queue_free_head vm_page_queue_free[MAX_COLORS]; + + unsigned int vm_page_free_wanted; unsigned int vm_page_free_wanted_privileged; +#if CONFIG_SECLUDED_MEMORY +unsigned int vm_page_free_wanted_secluded; +#endif /* CONFIG_SECLUDED_MEMORY */ unsigned int vm_page_free_count; -unsigned int vm_page_fictitious_count; - -unsigned int vm_page_free_count_minimum; /* debugging */ /* * Occasionally, the virtual memory system uses @@ -254,6 +323,7 @@ unsigned int vm_page_free_count_minimum; /* debugging */ * These page structures are allocated the way * most other kernel structures are. */ +zone_t vm_page_array_zone; zone_t vm_page_zone; vm_locks_array_t vm_page_locks; decl_lck_mtx_data(,vm_page_alloc_lock) @@ -275,7 +345,7 @@ struct vplq *vm_page_local_q = NULL; * For debugging, this should be a strange value * that the pmap module can recognize in assertions. */ -ppnum_t vm_page_fictitious_addr = (ppnum_t) -1; +const ppnum_t vm_page_fictitious_addr = (ppnum_t) -1; /* * Guard pages are not accessible so they don't @@ -285,7 +355,7 @@ ppnum_t vm_page_fictitious_addr = (ppnum_t) -1; * we don't use a real physical page with that * physical address. */ -ppnum_t vm_page_guard_addr = (ppnum_t) -2; +const ppnum_t vm_page_guard_addr = (ppnum_t) -2; /* * Resident page structures are also chained on @@ -293,37 +363,71 @@ ppnum_t vm_page_guard_addr = (ppnum_t) -2; * system (pageout daemon). These queues are * defined here, but are shared by the pageout * module. The inactive queue is broken into - * inactive and zf for convenience as the + * file backed and anonymous for convenience as the * pageout daemon often assignes a higher - * affinity to zf pages + * importance to anonymous pages (less likely to pick) */ -queue_head_t vm_page_queue_active; -queue_head_t vm_page_queue_inactive; -queue_head_t vm_page_queue_anonymous; /* inactive memory queue for anonymous pages */ -queue_head_t vm_page_queue_throttled; +vm_page_queue_head_t vm_page_queue_active __attribute__((aligned(VM_PACKED_POINTER_ALIGNMENT))); +vm_page_queue_head_t vm_page_queue_inactive __attribute__((aligned(VM_PACKED_POINTER_ALIGNMENT))); +#if CONFIG_SECLUDED_MEMORY +vm_page_queue_head_t vm_page_queue_secluded __attribute__((aligned(VM_PACKED_POINTER_ALIGNMENT))); +#endif /* CONFIG_SECLUDED_MEMORY */ +vm_page_queue_head_t vm_page_queue_anonymous __attribute__((aligned(VM_PACKED_POINTER_ALIGNMENT))); /* inactive memory queue for anonymous pages */ +vm_page_queue_head_t vm_page_queue_throttled __attribute__((aligned(VM_PACKED_POINTER_ALIGNMENT))); + +queue_head_t vm_objects_wired; + +#if CONFIG_BACKGROUND_QUEUE +vm_page_queue_head_t vm_page_queue_background __attribute__((aligned(VM_PACKED_POINTER_ALIGNMENT))); +uint32_t vm_page_background_target; +uint32_t vm_page_background_count; +uint64_t vm_page_background_promoted_count; + +uint32_t vm_page_background_internal_count; +uint32_t vm_page_background_external_count; + +uint32_t vm_page_background_mode; +uint32_t vm_page_background_exclude_external; +#endif unsigned int vm_page_active_count; unsigned int vm_page_inactive_count; +#if CONFIG_SECLUDED_MEMORY +unsigned int vm_page_secluded_count; +unsigned int vm_page_secluded_count_free; +unsigned int vm_page_secluded_count_inuse; +#endif /* CONFIG_SECLUDED_MEMORY */ unsigned int vm_page_anonymous_count; unsigned int vm_page_throttled_count; unsigned int vm_page_speculative_count; + unsigned int vm_page_wire_count; +unsigned int vm_page_wire_count_on_boot = 0; +unsigned int vm_page_stolen_count; unsigned int vm_page_wire_count_initial; +unsigned int vm_page_pages_initial; unsigned int vm_page_gobble_count = 0; -unsigned int vm_page_wire_count_warning = 0; -unsigned int vm_page_gobble_count_warning = 0; + +#define VM_PAGE_WIRE_COUNT_WARNING 0 +#define VM_PAGE_GOBBLE_COUNT_WARNING 0 unsigned int vm_page_purgeable_count = 0; /* # of pages purgeable now */ unsigned int vm_page_purgeable_wired_count = 0; /* # of purgeable pages that are wired now */ uint64_t vm_page_purged_count = 0; /* total count of purged pages */ +unsigned int vm_page_xpmapped_external_count = 0; +unsigned int vm_page_external_count = 0; +unsigned int vm_page_internal_count = 0; +unsigned int vm_page_pageable_external_count = 0; +unsigned int vm_page_pageable_internal_count = 0; + #if DEVELOPMENT || DEBUG unsigned int vm_page_speculative_recreated = 0; unsigned int vm_page_speculative_created = 0; unsigned int vm_page_speculative_used = 0; #endif -queue_head_t vm_page_queue_cleaned; +vm_page_queue_head_t vm_page_queue_cleaned __attribute__((aligned(VM_PACKED_POINTER_ALIGNMENT))); unsigned int vm_page_cleaned_count = 0; unsigned int vm_pageout_enqueued_cleaned = 0; @@ -341,9 +445,11 @@ ppnum_t max_valid_low_ppnum = 0xffffffff; unsigned int vm_page_free_target = 0; unsigned int vm_page_free_min = 0; unsigned int vm_page_throttle_limit = 0; -uint32_t vm_page_creation_throttle = 0; unsigned int vm_page_inactive_target = 0; -unsigned int vm_page_anonymous_min = 0; +#if CONFIG_SECLUDED_MEMORY +unsigned int vm_page_secluded_target = 0; +#endif /* CONFIG_SECLUDED_MEMORY */ +unsigned int vm_page_anonymous_min = 0; unsigned int vm_page_inactive_min = 0; unsigned int vm_page_free_reserved = 0; unsigned int vm_page_throttle_count = 0; @@ -373,7 +479,9 @@ struct vm_page_stats_reusable vm_page_stats_reusable; void vm_set_page_size(void) { - page_mask = page_size - 1; + page_size = PAGE_SIZE; + page_mask = PAGE_MASK; + page_shift = PAGE_SHIFT; if ((page_mask & page_size) != 0) panic("vm_set_page_size: page size not a power of two"); @@ -383,6 +491,50 @@ vm_set_page_size(void) break; } +#if defined (__x86_64__) + +#define MAX_CLUMP_SIZE 16 +#define DEFAULT_CLUMP_SIZE 4 + +unsigned int vm_clump_size, vm_clump_mask, vm_clump_shift, vm_clump_promote_threshold; + +#if DEVELOPMENT || DEBUG +unsigned long vm_clump_stats[MAX_CLUMP_SIZE+1]; +unsigned long vm_clump_allocs, vm_clump_inserts, vm_clump_inrange, vm_clump_promotes; + +static inline void vm_clump_update_stats(unsigned int c) { + assert(c<=vm_clump_size); + if(c>0 && c<=vm_clump_size) vm_clump_stats[c]+=c; + vm_clump_allocs+=c; +} +#endif /* if DEVELOPMENT || DEBUG */ + +/* Called once to setup the VM clump knobs */ +static void +vm_page_setup_clump( void ) +{ + unsigned int override, n; + + vm_clump_size = DEFAULT_CLUMP_SIZE; + if ( PE_parse_boot_argn("clump_size", &override, sizeof (override)) ) vm_clump_size = override; + + if(vm_clump_size > MAX_CLUMP_SIZE) panic("vm_page_setup_clump:: clump_size is too large!"); + if(vm_clump_size < 1) panic("vm_page_setup_clump:: clump_size must be >= 1"); + if((vm_clump_size & (vm_clump_size-1)) != 0) panic("vm_page_setup_clump:: clump_size must be a power of 2"); + + vm_clump_promote_threshold = vm_clump_size; + vm_clump_mask = vm_clump_size - 1; + for(vm_clump_shift=0, n=vm_clump_size; n>1; n>>=1, vm_clump_shift++); + +#if DEVELOPMENT || DEBUG + bzero(vm_clump_stats, sizeof(vm_clump_stats)); + vm_clump_allocs = vm_clump_inserts = vm_clump_inrange = vm_clump_promotes = 0; +#endif /* if DEVELOPMENT || DEBUG */ +} + +#endif /* #if defined (__x86_64__) */ + +#define COLOR_GROUPS_TO_STEAL 4 /* Called once during statup, once the cache geometry is known. */ @@ -390,7 +542,11 @@ static void vm_page_set_colors( void ) { unsigned int n, override; - + +#if defined (__x86_64__) + /* adjust #colors because we need to color outside the clump boundary */ + vm_cache_geometry_colors >>= vm_clump_shift; +#endif if ( PE_parse_boot_argn("colors", &override, sizeof (override)) ) /* colors specified as a boot-arg? */ n = override; else if ( vm_cache_geometry_colors ) /* do we know what the cache geometry is? */ @@ -404,10 +560,18 @@ vm_page_set_colors( void ) /* the count must be a power of 2 */ if ( ( n & (n - 1)) != 0 ) - panic("vm_page_set_colors"); + n = DEFAULT_COLORS; /* use default if all else fails */ vm_colors = n; vm_color_mask = n - 1; + + vm_free_magazine_refill_limit = vm_colors * COLOR_GROUPS_TO_STEAL; + +#if defined (__x86_64__) + /* adjust for reduction in colors due to clumping and multiple cores */ + if (real_ncpus) + vm_free_magazine_refill_limit *= (vm_clump_size * real_ncpus); +#endif } @@ -436,8 +600,12 @@ vm_page_init_lck_grp(void) lck_grp_init(&vm_page_lck_grp_bucket, "vm_page_bucket", &vm_page_lck_grp_attr); lck_attr_setdefault(&vm_page_lck_attr); lck_mtx_init_ext(&vm_page_alloc_lock, &vm_page_alloc_lock_ext, &vm_page_lck_grp_alloc, &vm_page_lck_attr); + + vm_compressor_init_locks(); } +#define ROUNDUP_NEXTP2(X) (1U << (32 - __builtin_clz((X) - 1))) + void vm_page_init_local_q() { @@ -451,15 +619,25 @@ vm_page_init_local_q() * no point in this for a uni-processor system */ if (num_cpus >= 2) { - t_local_q = (struct vplq *)kalloc(num_cpus * sizeof(struct vplq)); +#if KASAN + /* KASAN breaks the expectation of a size-aligned object by adding a + * redzone, so explicitly align. */ + t_local_q = (struct vplq *)kalloc(num_cpus * sizeof(struct vplq) + VM_PACKED_POINTER_ALIGNMENT); + t_local_q = (void *)(((uintptr_t)t_local_q + (VM_PACKED_POINTER_ALIGNMENT-1)) & ~(VM_PACKED_POINTER_ALIGNMENT-1)); +#else + /* round the size up to the nearest power of two */ + t_local_q = (struct vplq *)kalloc(ROUNDUP_NEXTP2(num_cpus * sizeof(struct vplq))); +#endif for (i = 0; i < num_cpus; i++) { struct vpl *lq; lq = &t_local_q[i].vpl_un.vpl; VPL_LOCK_INIT(lq, &vm_page_lck_grp_local, &vm_page_lck_attr); - queue_init(&lq->vpl_queue); + vm_page_queue_init(&lq->vpl_queue); lq->vpl_count = 0; + lq->vpl_internal_count = 0; + lq->vpl_external_count = 0; } vm_page_local_q_count = num_cpus; @@ -467,6 +645,17 @@ vm_page_init_local_q() } } +/* + * vm_init_before_launchd + * + * This should be called right before launchd is loaded. + */ +void +vm_init_before_launchd() +{ + vm_page_wire_count_on_boot = vm_page_wire_count; +} + /* * vm_page_bootstrap: @@ -484,7 +673,7 @@ vm_page_bootstrap( vm_offset_t *startp, vm_offset_t *endp) { - register vm_page_t m; + vm_page_t m; unsigned int i; unsigned int log1; unsigned int log2; @@ -497,38 +686,40 @@ vm_page_bootstrap( m = &vm_page_template; bzero(m, sizeof (*m)); - m->pageq.next = NULL; - m->pageq.prev = NULL; - m->listq.next = NULL; - m->listq.prev = NULL; - m->next = VM_PAGE_NULL; +#if CONFIG_BACKGROUND_QUEUE + m->vm_page_backgroundq.next = 0; + m->vm_page_backgroundq.prev = 0; + m->vm_page_in_background = FALSE; + m->vm_page_on_backgroundq = FALSE; +#endif + + VM_PAGE_ZERO_PAGEQ_ENTRY(m); + m->listq.next = 0; + m->listq.prev = 0; + m->next_m = 0; - m->object = VM_OBJECT_NULL; /* reset later */ + m->vm_page_object = 0; /* reset later */ m->offset = (vm_object_offset_t) -1; /* reset later */ m->wire_count = 0; - m->local = FALSE; - m->inactive = FALSE; - m->active = FALSE; - m->pageout_queue = FALSE; - m->speculative = FALSE; + m->vm_page_q_state = VM_PAGE_NOT_ON_Q; m->laundry = FALSE; - m->free = FALSE; m->reference = FALSE; m->gobbled = FALSE; m->private = FALSE; - m->throttled = FALSE; m->__unused_pageq_bits = 0; - m->phys_page = 0; /* reset later */ - +#if !defined(__arm__) && !defined(__arm64__) + VM_PAGE_SET_PHYS_PAGE(m, 0); /* reset later */ +#endif m->busy = TRUE; m->wanted = FALSE; m->tabled = FALSE; + m->hashed = FALSE; m->fictitious = FALSE; m->pmapped = FALSE; m->wpmapped = FALSE; - m->pageout = FALSE; + m->free_when_done = FALSE; m->absent = FALSE; m->error = FALSE; m->dirty = FALSE; @@ -538,17 +729,16 @@ vm_page_bootstrap( m->overwriting = FALSE; m->restart = FALSE; m->unusual = FALSE; - m->encrypted = FALSE; - m->encrypted_cleaning = FALSE; m->cs_validated = FALSE; m->cs_tainted = FALSE; + m->cs_nx = FALSE; m->no_cache = FALSE; m->reusable = FALSE; m->slid = FALSE; - m->was_dirty = FALSE; + m->xpmapped = FALSE; + m->written_by_kernel = FALSE; m->__unused_object_bits = 0; - /* * Initialize the page queues. */ @@ -573,33 +763,117 @@ vm_page_bootstrap( purgeable_queues[i].debug_count_objects = 0; #endif }; + purgeable_nonvolatile_count = 0; + queue_init(&purgeable_nonvolatile_queue); for (i = 0; i < MAX_COLORS; i++ ) - queue_init(&vm_page_queue_free[i]); - - queue_init(&vm_lopage_queue_free); - queue_init(&vm_page_queue_active); - queue_init(&vm_page_queue_inactive); - queue_init(&vm_page_queue_cleaned); - queue_init(&vm_page_queue_throttled); - queue_init(&vm_page_queue_anonymous); + vm_page_queue_init(&vm_page_queue_free[i].qhead); + + vm_page_queue_init(&vm_lopage_queue_free); + vm_page_queue_init(&vm_page_queue_active); + vm_page_queue_init(&vm_page_queue_inactive); +#if CONFIG_SECLUDED_MEMORY + vm_page_queue_init(&vm_page_queue_secluded); +#endif /* CONFIG_SECLUDED_MEMORY */ + vm_page_queue_init(&vm_page_queue_cleaned); + vm_page_queue_init(&vm_page_queue_throttled); + vm_page_queue_init(&vm_page_queue_anonymous); + queue_init(&vm_objects_wired); for ( i = 0; i <= VM_PAGE_MAX_SPECULATIVE_AGE_Q; i++ ) { - queue_init(&vm_page_queue_speculative[i].age_q); + vm_page_queue_init(&vm_page_queue_speculative[i].age_q); vm_page_queue_speculative[i].age_ts.tv_sec = 0; vm_page_queue_speculative[i].age_ts.tv_nsec = 0; } +#if CONFIG_BACKGROUND_QUEUE + vm_page_queue_init(&vm_page_queue_background); + + vm_page_background_count = 0; + vm_page_background_internal_count = 0; + vm_page_background_external_count = 0; + vm_page_background_promoted_count = 0; + + vm_page_background_target = (unsigned int)(atop_64(max_mem) / 25); + + if (vm_page_background_target > VM_PAGE_BACKGROUND_TARGET_MAX) + vm_page_background_target = VM_PAGE_BACKGROUND_TARGET_MAX; + + vm_page_background_mode = VM_PAGE_BG_LEVEL_1; + vm_page_background_exclude_external = 0; + + PE_parse_boot_argn("vm_page_bg_mode", &vm_page_background_mode, sizeof(vm_page_background_mode)); + PE_parse_boot_argn("vm_page_bg_exclude_external", &vm_page_background_exclude_external, sizeof(vm_page_background_exclude_external)); + PE_parse_boot_argn("vm_page_bg_target", &vm_page_background_target, sizeof(vm_page_background_target)); + + if (vm_page_background_mode > VM_PAGE_BG_LEVEL_1) + vm_page_background_mode = VM_PAGE_BG_LEVEL_1; +#endif vm_page_free_wanted = 0; vm_page_free_wanted_privileged = 0; +#if CONFIG_SECLUDED_MEMORY + vm_page_free_wanted_secluded = 0; +#endif /* CONFIG_SECLUDED_MEMORY */ +#if defined (__x86_64__) + /* this must be called before vm_page_set_colors() */ + vm_page_setup_clump(); +#endif + vm_page_set_colors(); + bzero(vm_page_inactive_states, sizeof(vm_page_inactive_states)); + vm_page_inactive_states[VM_PAGE_ON_INACTIVE_INTERNAL_Q] = 1; + vm_page_inactive_states[VM_PAGE_ON_INACTIVE_EXTERNAL_Q] = 1; + vm_page_inactive_states[VM_PAGE_ON_INACTIVE_CLEANED_Q] = 1; + + bzero(vm_page_pageable_states, sizeof(vm_page_pageable_states)); + vm_page_pageable_states[VM_PAGE_ON_INACTIVE_INTERNAL_Q] = 1; + vm_page_pageable_states[VM_PAGE_ON_INACTIVE_EXTERNAL_Q] = 1; + vm_page_pageable_states[VM_PAGE_ON_INACTIVE_CLEANED_Q] = 1; + vm_page_pageable_states[VM_PAGE_ON_ACTIVE_Q] = 1; + vm_page_pageable_states[VM_PAGE_ON_SPECULATIVE_Q] = 1; + vm_page_pageable_states[VM_PAGE_ON_THROTTLED_Q] = 1; +#if CONFIG_SECLUDED_MEMORY + vm_page_pageable_states[VM_PAGE_ON_SECLUDED_Q] = 1; +#endif /* CONFIG_SECLUDED_MEMORY */ + + bzero(vm_page_non_speculative_pageable_states, sizeof(vm_page_non_speculative_pageable_states)); + vm_page_non_speculative_pageable_states[VM_PAGE_ON_INACTIVE_INTERNAL_Q] = 1; + vm_page_non_speculative_pageable_states[VM_PAGE_ON_INACTIVE_EXTERNAL_Q] = 1; + vm_page_non_speculative_pageable_states[VM_PAGE_ON_INACTIVE_CLEANED_Q] = 1; + vm_page_non_speculative_pageable_states[VM_PAGE_ON_ACTIVE_Q] = 1; + vm_page_non_speculative_pageable_states[VM_PAGE_ON_THROTTLED_Q] = 1; +#if CONFIG_SECLUDED_MEMORY + vm_page_non_speculative_pageable_states[VM_PAGE_ON_SECLUDED_Q] = 1; +#endif /* CONFIG_SECLUDED_MEMORY */ + + bzero(vm_page_active_or_inactive_states, sizeof(vm_page_active_or_inactive_states)); + vm_page_active_or_inactive_states[VM_PAGE_ON_INACTIVE_INTERNAL_Q] = 1; + vm_page_active_or_inactive_states[VM_PAGE_ON_INACTIVE_EXTERNAL_Q] = 1; + vm_page_active_or_inactive_states[VM_PAGE_ON_INACTIVE_CLEANED_Q] = 1; + vm_page_active_or_inactive_states[VM_PAGE_ON_ACTIVE_Q] = 1; +#if CONFIG_SECLUDED_MEMORY + vm_page_active_or_inactive_states[VM_PAGE_ON_SECLUDED_Q] = 1; +#endif /* CONFIG_SECLUDED_MEMORY */ + + for (i = 0; i < VM_KERN_MEMORY_FIRST_DYNAMIC; i++) + { + vm_allocation_sites_static[i].refcount = 2; + vm_allocation_sites_static[i].tag = i; + vm_allocation_sites[i] = &vm_allocation_sites_static[i]; + } + vm_allocation_sites_static[VM_KERN_MEMORY_FIRST_DYNAMIC].refcount = 2; + vm_allocation_sites_static[VM_KERN_MEMORY_FIRST_DYNAMIC].tag = VM_KERN_MEMORY_ANY; + vm_allocation_sites[VM_KERN_MEMORY_ANY] = &vm_allocation_sites_static[VM_KERN_MEMORY_FIRST_DYNAMIC]; /* * Steal memory for the map and zone subsystems. */ - zone_steal_memory(); +#if CONFIG_GZALLOC + gzalloc_configure(); +#endif + kernel_debug_string_early("vm_map_steal_memory"); vm_map_steal_memory(); /* @@ -645,18 +919,44 @@ vm_page_bootstrap( if (vm_page_hash_mask & vm_page_bucket_count) printf("vm_page_bootstrap: WARNING -- strange page hash\n"); +#if VM_PAGE_BUCKETS_CHECK +#if VM_PAGE_FAKE_BUCKETS + /* + * Allocate a decoy set of page buckets, to detect + * any stomping there. + */ + vm_page_fake_buckets = (vm_page_bucket_t *) + pmap_steal_memory(vm_page_bucket_count * + sizeof(vm_page_bucket_t)); + vm_page_fake_buckets_start = (vm_map_offset_t) vm_page_fake_buckets; + vm_page_fake_buckets_end = + vm_map_round_page((vm_page_fake_buckets_start + + (vm_page_bucket_count * + sizeof (vm_page_bucket_t))), + PAGE_MASK); + char *cp; + for (cp = (char *)vm_page_fake_buckets_start; + cp < (char *)vm_page_fake_buckets_end; + cp++) { + *cp = 0x5a; + } +#endif /* VM_PAGE_FAKE_BUCKETS */ +#endif /* VM_PAGE_BUCKETS_CHECK */ + + kernel_debug_string_early("vm_page_buckets"); vm_page_buckets = (vm_page_bucket_t *) pmap_steal_memory(vm_page_bucket_count * sizeof(vm_page_bucket_t)); + kernel_debug_string_early("vm_page_bucket_locks"); vm_page_bucket_locks = (lck_spin_t *) pmap_steal_memory(vm_page_bucket_lock_count * sizeof(lck_spin_t)); for (i = 0; i < vm_page_bucket_count; i++) { - register vm_page_bucket_t *bucket = &vm_page_buckets[i]; + vm_page_bucket_t *bucket = &vm_page_buckets[i]; - bucket->pages = VM_PAGE_NULL; + bucket->page_list = VM_PAGE_PACK_PTR(VM_PAGE_NULL); #if MACH_PAGE_HASH_STATS bucket->cur_count = 0; bucket->hi_count = 0; @@ -666,6 +966,14 @@ vm_page_bootstrap( for (i = 0; i < vm_page_bucket_lock_count; i++) lck_spin_init(&vm_page_bucket_locks[i], &vm_page_lck_grp_bucket, &vm_page_lck_attr); + lck_spin_init(&vm_objects_wired_lock, &vm_page_lck_grp_bucket, &vm_page_lck_attr); + lck_spin_init(&vm_allocation_sites_lock, &vm_page_lck_grp_bucket, &vm_page_lck_attr); + vm_tag_init(); + +#if VM_PAGE_BUCKETS_CHECK + vm_page_buckets_check_ready = TRUE; +#endif /* VM_PAGE_BUCKETS_CHECK */ + /* * Machine-dependent code allocates the resident page table. * It uses vm_page_init to initialize the page frames. @@ -674,6 +982,7 @@ vm_page_bootstrap( * to get the alignment right. */ + kernel_debug_string_early("pmap_startup"); pmap_startup(&virtual_space_start, &virtual_space_end); virtual_space_start = round_page(virtual_space_start); virtual_space_end = trunc_page(virtual_space_end); @@ -690,12 +999,16 @@ vm_page_bootstrap( */ assert((unsigned int) atop_64(max_mem) == atop_64(max_mem)); vm_page_wire_count = ((unsigned int) atop_64(max_mem)) - vm_page_free_count - vm_lopage_free_count; /* initial value */ +#if CONFIG_SECLUDED_MEMORY + vm_page_wire_count -= vm_page_secluded_count; +#endif vm_page_wire_count_initial = vm_page_wire_count; - vm_page_free_count_minimum = vm_page_free_count; + vm_page_pages_initial = vm_page_pages; printf("vm_page_bootstrap: %d free pages and %d wired pages\n", vm_page_free_count, vm_page_wire_count); + kernel_debug_string_early("vm_page_bootstrap complete"); simple_lock_init(&vm_paging_lock, 0); } @@ -709,8 +1022,9 @@ void * pmap_steal_memory( vm_size_t size) { + kern_return_t kr; vm_offset_t addr, vaddr; - ppnum_t phys_page; + ppnum_t phys_page; /* * We round the size to a round multiple. @@ -753,29 +1067,61 @@ pmap_steal_memory( vaddr += PAGE_SIZE) { if (!pmap_next_page_hi(&phys_page)) - panic("pmap_steal_memory"); + panic("pmap_steal_memory() size: 0x%llx\n", (uint64_t)size); /* * XXX Logically, these mappings should be wired, * but some pmap modules barf if they are. */ #if defined(__LP64__) +#ifdef __arm64__ + /* ARM64_TODO: verify that we really don't need this */ +#else pmap_pre_expand(kernel_pmap, vaddr); +#endif #endif - pmap_enter(kernel_pmap, vaddr, phys_page, - VM_PROT_READ|VM_PROT_WRITE, VM_PROT_NONE, - VM_WIMG_USE_DEFAULT, FALSE); + kr = pmap_enter(kernel_pmap, vaddr, phys_page, + VM_PROT_READ|VM_PROT_WRITE, VM_PROT_NONE, + VM_WIMG_USE_DEFAULT, FALSE); + + if (kr != KERN_SUCCESS) { + panic("pmap_steal_memory() pmap_enter failed, vaddr=%#lx, phys_page=%u", + (unsigned long)vaddr, phys_page); + } + /* * Account for newly stolen memory */ vm_page_wire_count++; - + vm_page_stolen_count++; } +#if KASAN + kasan_notify_address(round_page(addr), size); +#endif return (void *) addr; } +#if CONFIG_SECLUDED_MEMORY +/* boot-args to control secluded memory */ +unsigned int secluded_mem_mb = 0; /* # of MBs of RAM to seclude */ +int secluded_for_iokit = 1; /* IOKit can use secluded memory */ +int secluded_for_apps = 1; /* apps can use secluded memory */ +int secluded_for_filecache = 2; /* filecache can use seclude memory */ +#if 11 +int secluded_for_fbdp = 0; +#endif +#endif /* CONFIG_SECLUDED_MEMORY */ + + +#if defined(__arm__) || defined(__arm64__) +extern void patch_low_glo_vm_page_info(void *, void *, uint32_t); +unsigned int vm_first_phys_ppnum = 0; +#endif + + +void vm_page_release_startup(vm_page_t mem); void pmap_startup( vm_offset_t *startp, @@ -785,6 +1131,16 @@ pmap_startup( ppnum_t phys_page; addr64_t tmpaddr; +#if defined(__LP64__) + /* + * make sure we are aligned on a 64 byte boundary + * for VM_PAGE_PACK_PTR (it clips off the low-order + * 6 bits of the pointer) + */ + if (virtual_space_start != virtual_space_end) + virtual_space_start = round_page(virtual_space_start); +#endif + /* * We calculate how many page frames we will have * and then allocate the page structures in one chunk. @@ -799,9 +1155,21 @@ pmap_startup( /* * Initialize the page frames. */ + kernel_debug_string_early("Initialize the page frames"); + + vm_page_array_beginning_addr = &vm_pages[0]; + vm_page_array_ending_addr = &vm_pages[npages]; + for (i = 0, pages_initialized = 0; i < npages; i++) { if (!pmap_next_page(&phys_page)) break; +#if defined(__arm__) || defined(__arm64__) + if (pages_initialized == 0) { + vm_first_phys_ppnum = phys_page; + patch_low_glo_vm_page_info((void *)vm_page_array_beginning_addr, (void *)vm_page_array_ending_addr, vm_first_phys_ppnum); + } + assert((i + vm_first_phys_ppnum) == phys_page); +#endif if (pages_initialized == 0 || phys_page < vm_page_lowest) vm_page_lowest = phys_page; @@ -810,7 +1178,17 @@ pmap_startup( pages_initialized++; } vm_pages_count = pages_initialized; + vm_page_array_boundary = &vm_pages[pages_initialized]; +#if defined(__LP64__) + + if ((vm_page_t)(VM_PAGE_UNPACK_PTR(VM_PAGE_PACK_PTR(&vm_pages[0]))) != &vm_pages[0]) + panic("VM_PAGE_PACK_PTR failed on &vm_pages[0] - %p", (void *)&vm_pages[0]); + + if ((vm_page_t)(VM_PAGE_UNPACK_PTR(VM_PAGE_PACK_PTR(&vm_pages[vm_pages_count-1]))) != &vm_pages[vm_pages_count-1]) + panic("VM_PAGE_PACK_PTR failed on &vm_pages[vm_pages_count-1] - %p", (void *)&vm_pages[vm_pages_count-1]); +#endif + kernel_debug_string_early("page fill/release"); /* * Check if we want to initialize pages to a known value */ @@ -828,12 +1206,46 @@ pmap_startup( #endif if (fill) kprintf("Filling vm_pages with pattern: 0x%x\n", fillval); + +#if CONFIG_SECLUDED_MEMORY + /* default: no secluded mem */ + secluded_mem_mb = 0; + if (max_mem > 1*1024*1024*1024) { + /* default to 90MB for devices with > 1GB of RAM */ + secluded_mem_mb = 90; + } + /* override with value from device tree, if provided */ + PE_get_default("kern.secluded_mem_mb", + &secluded_mem_mb, sizeof(secluded_mem_mb)); + /* override with value from boot-args, if provided */ + PE_parse_boot_argn("secluded_mem_mb", + &secluded_mem_mb, + sizeof (secluded_mem_mb)); + + vm_page_secluded_target = (unsigned int) + ((secluded_mem_mb * 1024ULL * 1024ULL) / PAGE_SIZE); + PE_parse_boot_argn("secluded_for_iokit", + &secluded_for_iokit, + sizeof (secluded_for_iokit)); + PE_parse_boot_argn("secluded_for_apps", + &secluded_for_apps, + sizeof (secluded_for_apps)); + PE_parse_boot_argn("secluded_for_filecache", + &secluded_for_filecache, + sizeof (secluded_for_filecache)); +#if 11 + PE_parse_boot_argn("secluded_for_fbdp", + &secluded_for_fbdp, + sizeof (secluded_for_fbdp)); +#endif +#endif /* CONFIG_SECLUDED_MEMORY */ + // -debug code remove if (2 == vm_himemory_mode) { // free low -> high so high is preferred for (i = 1; i <= pages_initialized; i++) { - if(fill) fillPage(vm_pages[i - 1].phys_page, fillval); /* Fill the page with a know value if requested at boot */ - vm_page_release(&vm_pages[i - 1]); + if(fill) fillPage(VM_PAGE_GET_PHYS_PAGE(&vm_pages[i - 1]), fillval); /* Fill the page with a know value if requested at boot */ + vm_page_release_startup(&vm_pages[i - 1]); } } else @@ -846,10 +1258,12 @@ pmap_startup( * they require several consecutive pages. */ for (i = pages_initialized; i > 0; i--) { - if(fill) fillPage(vm_pages[i - 1].phys_page, fillval); /* Fill the page with a know value if requested at boot */ - vm_page_release(&vm_pages[i - 1]); + if(fill) fillPage(VM_PAGE_GET_PHYS_PAGE(&vm_pages[i - 1]), fillval); /* Fill the page with a know value if requested at boot */ + vm_page_release_startup(&vm_pages[i - 1]); } + VM_CHECK_MEMORYSTATUS; + #if 0 { vm_page_t xx, xxo, xxl; @@ -859,7 +1273,7 @@ pmap_startup( xxl = 0; for( i = 0; i < vm_colors; i++ ) { - queue_iterate(&vm_page_queue_free[i], + queue_iterate(&vm_page_queue_free[i].qhead, xx, vm_page_t, pageq) { /* BRINGUP */ @@ -873,7 +1287,7 @@ pmap_startup( if(((j - 1) & 0xFFFF) == 0) kprintf("checking number %d of %d\n", j, vm_page_free_count); - for(xxo = xx->pageq.next; xxo != &vm_page_queue_free[i]; xxo = xxo->pageq.next) { /* (BRINGUP) */ + for(xxo = xx->pageq.next; xxo != &vm_page_queue_free[i].qhead; xxo = xxo->pageq.next) { /* (BRINGUP) */ k++; if(k > l) panic("pmap_startup: too many in secondary check %d %d\n", k, l); if((xx->phys_page & 0xFFFFFFFF) == (xxo->phys_page & 0xFFFFFFFF)) { /* (BRINGUP) */ @@ -913,25 +1327,41 @@ pmap_startup( void vm_page_module_init(void) { - vm_page_zone = zinit((vm_size_t) sizeof(struct vm_page), - 0, PAGE_SIZE, "vm pages"); + uint64_t vm_page_zone_pages, vm_page_array_zone_data_size; + vm_size_t vm_page_with_ppnum_size; -#if ZONE_DEBUG - zone_debug_disable(vm_page_zone); -#endif /* ZONE_DEBUG */ + vm_page_array_zone = zinit((vm_size_t) sizeof(struct vm_page), + 0, PAGE_SIZE, "vm pages array"); + + zone_change(vm_page_array_zone, Z_CALLERACCT, FALSE); + zone_change(vm_page_array_zone, Z_EXPAND, FALSE); + zone_change(vm_page_array_zone, Z_EXHAUST, TRUE); + zone_change(vm_page_array_zone, Z_FOREIGN, TRUE); + zone_change(vm_page_array_zone, Z_GZALLOC_EXEMPT, TRUE); + /* + * Adjust zone statistics to account for the real pages allocated + * in vm_page_create(). [Q: is this really what we want?] + */ + vm_page_array_zone->count += vm_page_pages; + vm_page_array_zone->sum_count += vm_page_pages; + vm_page_array_zone_data_size = vm_page_pages * vm_page_array_zone->elem_size; + vm_page_array_zone->cur_size += vm_page_array_zone_data_size; + vm_page_zone_pages = ((round_page(vm_page_array_zone_data_size)) / PAGE_SIZE); + OSAddAtomic64(vm_page_zone_pages, &(vm_page_array_zone->page_count)); + /* since zone accounts for these, take them out of stolen */ + VM_PAGE_MOVE_STOLEN(vm_page_zone_pages); + + vm_page_with_ppnum_size = (sizeof(struct vm_page_with_ppnum) + (VM_PACKED_POINTER_ALIGNMENT-1)) & ~(VM_PACKED_POINTER_ALIGNMENT - 1); + + vm_page_zone = zinit(vm_page_with_ppnum_size, + 0, PAGE_SIZE, "vm pages"); zone_change(vm_page_zone, Z_CALLERACCT, FALSE); zone_change(vm_page_zone, Z_EXPAND, FALSE); zone_change(vm_page_zone, Z_EXHAUST, TRUE); zone_change(vm_page_zone, Z_FOREIGN, TRUE); zone_change(vm_page_zone, Z_GZALLOC_EXEMPT, TRUE); - /* - * Adjust zone statistics to account for the real pages allocated - * in vm_page_create(). [Q: is this really what we want?] - */ - vm_page_zone->count += vm_page_pages; - vm_page_zone->sum_count += vm_page_pages; - vm_page_zone->cur_size += vm_page_pages * vm_page_zone->elem_size; + zone_change(vm_page_zone, Z_ALIGNMENT_REQUIRED, TRUE); } /* @@ -962,7 +1392,7 @@ vm_page_create( pmap_clear_noencrypt(phys_page); vm_page_pages++; - vm_page_release(m); + vm_page_release(m, FALSE); } } @@ -992,7 +1422,17 @@ vm_page_insert( vm_object_t object, vm_object_offset_t offset) { - vm_page_insert_internal(mem, object, offset, FALSE, TRUE, FALSE); + vm_page_insert_internal(mem, object, offset, VM_KERN_MEMORY_NONE, FALSE, TRUE, FALSE, FALSE, NULL); +} + +void +vm_page_insert_wired( + vm_page_t mem, + vm_object_t object, + vm_object_offset_t offset, + vm_tag_t tag) +{ + vm_page_insert_internal(mem, object, offset, tag, FALSE, TRUE, FALSE, FALSE, NULL); } void @@ -1000,13 +1440,17 @@ vm_page_insert_internal( vm_page_t mem, vm_object_t object, vm_object_offset_t offset, + vm_tag_t tag, boolean_t queues_lock_held, boolean_t insert_in_hash, - boolean_t batch_pmap_op) + boolean_t batch_pmap_op, + boolean_t batch_accounting, + uint64_t *delayed_ledger_update) { - vm_page_bucket_t *bucket; - lck_spin_t *bucket_lock; - int hash_id; + vm_page_bucket_t *bucket; + lck_spin_t *bucket_lock; + int hash_id; + task_t owner; XPR(XPR_VM_PAGE, "vm_page_insert, object 0x%X offset 0x%X page 0x%X\n", @@ -1019,30 +1463,32 @@ vm_page_insert_internal( VM_PAGE_CHECK(mem); #endif - if (object == vm_submap_object) { - /* the vm_submap_object is only a placeholder for submaps */ - panic("vm_page_insert(vm_submap_object,0x%llx)\n", offset); - } + assert(page_aligned(offset)); + + assert(!VM_PAGE_WIRED(mem) || mem->private || mem->fictitious || (tag != VM_KERN_MEMORY_NONE)); + + /* the vm_submap_object is only a placeholder for submaps */ + assert(object != vm_submap_object); vm_object_lock_assert_exclusive(object); -#if DEBUG - lck_mtx_assert(&vm_page_queue_lock, + LCK_MTX_ASSERT(&vm_page_queue_lock, queues_lock_held ? LCK_MTX_ASSERT_OWNED : LCK_MTX_ASSERT_NOTOWNED); -#endif /* DEBUG */ - + + if (queues_lock_held == FALSE) + assert(!VM_PAGE_PAGEABLE(mem)); + if (insert_in_hash == TRUE) { -#if DEBUG - if (mem->tabled || mem->object != VM_OBJECT_NULL) +#if DEBUG || VM_PAGE_CHECK_BUCKETS + if (mem->tabled || mem->vm_page_object) panic("vm_page_insert: page %p for (obj=%p,off=0x%llx) " "already in (obj=%p,off=0x%llx)", - mem, object, offset, mem->object, mem->offset); + mem, object, offset, VM_PAGE_OBJECT(mem), mem->offset); #endif - assert(!object->internal || offset < object->vo_size); - - /* only insert "pageout" pages into "pageout" objects, - * and normal pages into normal objects */ - assert(object->pageout == mem->pageout); + if (object->internal && (offset >= object->vo_size)) { + panic("vm_page_insert_internal: (page=%p,obj=%p,off=0x%llx,size=0x%llx) inserted at offset past object bounds", + mem, object, offset, object->vo_size); + } assert(vm_page_lookup(object, offset) == VM_PAGE_NULL); @@ -1050,9 +1496,15 @@ vm_page_insert_internal( * Record the object/offset pair in this page */ - mem->object = object; + mem->vm_page_object = VM_PAGE_PACK_OBJECT(object); mem->offset = offset; +#if CONFIG_SECLUDED_MEMORY + if (object->eligible_for_secluded) { + vm_page_secluded.eligible_for_secluded++; + } +#endif /* CONFIG_SECLUDED_MEMORY */ + /* * Insert it into the object_object/offset hash table */ @@ -1062,13 +1514,15 @@ vm_page_insert_internal( lck_spin_lock(bucket_lock); - mem->next = bucket->pages; - bucket->pages = mem; + mem->next_m = bucket->page_list; + bucket->page_list = VM_PAGE_PACK_PTR(mem); + assert(mem == (vm_page_t)(VM_PAGE_UNPACK_PTR(bucket->page_list))); + #if MACH_PAGE_HASH_STATS if (++bucket->cur_count > bucket->hi_count) bucket->hi_count = bucket->cur_count; #endif /* MACH_PAGE_HASH_STATS */ - + mem->hashed = TRUE; lck_spin_unlock(bucket_lock); } @@ -1084,8 +1538,8 @@ vm_page_insert_internal( /* * Now link into the object's list of backed pages. */ - - VM_PAGE_INSERT(mem, object); + vm_page_queue_enter(&object->memq, mem, vm_page_t, listq); + object->memq_hint = mem; mem->tabled = TRUE; /* @@ -1094,20 +1548,78 @@ vm_page_insert_internal( object->resident_page_count++; if (VM_PAGE_WIRED(mem)) { - object->wired_page_count++; + assert(mem->wire_count > 0); + VM_OBJECT_WIRED_PAGE_UPDATE_START(object); + VM_OBJECT_WIRED_PAGE_ADD(object, mem); + VM_OBJECT_WIRED_PAGE_UPDATE_END(object, tag); } assert(object->resident_page_count >= object->wired_page_count); + if (batch_accounting == FALSE) { + if (object->internal) { + OSAddAtomic(1, &vm_page_internal_count); + } else { + OSAddAtomic(1, &vm_page_external_count); + } + } + + /* + * It wouldn't make sense to insert a "reusable" page in + * an object (the page would have been marked "reusable" only + * at the time of a madvise(MADV_FREE_REUSABLE) if it was already + * in the object at that time). + * But a page could be inserted in a "all_reusable" object, if + * something faults it in (a vm_read() from another task or a + * "use-after-free" issue in user space, for example). It can + * also happen if we're relocating a page from that object to + * a different physical page during a physically-contiguous + * allocation. + */ assert(!mem->reusable); + if (object->all_reusable) { + OSAddAtomic(+1, &vm_page_stats_reusable.reusable_count); + } + + if (object->purgable == VM_PURGABLE_DENY) { + owner = TASK_NULL; + } else { + owner = object->vo_purgeable_owner; + } + if (owner && + (object->purgable == VM_PURGABLE_NONVOLATILE || + VM_PAGE_WIRED(mem))) { + + if (delayed_ledger_update) + *delayed_ledger_update += PAGE_SIZE; + else { + /* more non-volatile bytes */ + ledger_credit(owner->ledger, + task_ledgers.purgeable_nonvolatile, + PAGE_SIZE); + /* more footprint */ + ledger_credit(owner->ledger, + task_ledgers.phys_footprint, + PAGE_SIZE); + } + + } else if (owner && + (object->purgable == VM_PURGABLE_VOLATILE || + object->purgable == VM_PURGABLE_EMPTY)) { + assert(! VM_PAGE_WIRED(mem)); + /* more volatile bytes */ + ledger_credit(owner->ledger, + task_ledgers.purgeable_volatile, + PAGE_SIZE); + } if (object->purgable == VM_PURGABLE_VOLATILE) { if (VM_PAGE_WIRED(mem)) { - OSAddAtomic(1, &vm_page_purgeable_wired_count); + OSAddAtomic(+1, &vm_page_purgeable_wired_count); } else { - OSAddAtomic(1, &vm_page_purgeable_count); + OSAddAtomic(+1, &vm_page_purgeable_count); } } else if (object->purgable == VM_PURGABLE_EMPTY && - mem->throttled) { + mem->vm_page_q_state == VM_PAGE_ON_THROTTLED_Q) { /* * This page belongs to a purged VM object but hasn't * been purged (because it was "busy"). @@ -1122,6 +1634,25 @@ vm_page_insert_internal( if (queues_lock_held == FALSE) vm_page_unlock_queues(); } + +#if VM_OBJECT_TRACKING_OP_MODIFIED + if (vm_object_tracking_inited && + object->internal && + object->resident_page_count == 0 && + object->pager == NULL && + object->shadow != NULL && + object->shadow->copy == object) { + void *bt[VM_OBJECT_TRACKING_BTDEPTH]; + int numsaved = 0; + + numsaved =OSBacktrace(bt, VM_OBJECT_TRACKING_BTDEPTH); + btlog_add_entry(vm_object_tracking_btlog, + object, + VM_OBJECT_TRACKING_OP_MODIFIED, + bt, + numsaved); + } +#endif /* VM_OBJECT_TRACKING_OP_MODIFIED */ } /* @@ -1134,9 +1665,9 @@ vm_page_insert_internal( */ void vm_page_replace( - register vm_page_t mem, - register vm_object_t object, - register vm_object_offset_t offset) + vm_page_t mem, + vm_object_t object, + vm_object_offset_t offset) { vm_page_bucket_t *bucket; vm_page_t found_m = VM_PAGE_NULL; @@ -1151,18 +1682,20 @@ vm_page_replace( VM_PAGE_CHECK(mem); #endif vm_object_lock_assert_exclusive(object); -#if DEBUG - if (mem->tabled || mem->object != VM_OBJECT_NULL) +#if DEBUG || VM_PAGE_CHECK_BUCKETS + if (mem->tabled || mem->vm_page_object) panic("vm_page_replace: page %p for (obj=%p,off=0x%llx) " "already in (obj=%p,off=0x%llx)", - mem, object, offset, mem->object, mem->offset); - lck_mtx_assert(&vm_page_queue_lock, LCK_MTX_ASSERT_NOTOWNED); + mem, object, offset, VM_PAGE_OBJECT(mem), mem->offset); #endif + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_NOTOWNED); + + assert(!VM_PAGE_PAGEABLE(mem)); + /* * Record the object/offset pair in this page */ - - mem->object = object; + mem->vm_page_object = VM_PAGE_PACK_OBJECT(object); mem->offset = offset; /* @@ -1176,31 +1709,37 @@ vm_page_replace( lck_spin_lock(bucket_lock); - if (bucket->pages) { - vm_page_t *mp = &bucket->pages; - vm_page_t m = *mp; + if (bucket->page_list) { + vm_page_packed_t *mp = &bucket->page_list; + vm_page_t m = (vm_page_t)(VM_PAGE_UNPACK_PTR(*mp)); do { - if (m->object == object && m->offset == offset) { + /* + * compare packed object pointers + */ + if (m->vm_page_object == mem->vm_page_object && m->offset == offset) { /* * Remove old page from hash list */ - *mp = m->next; + *mp = m->next_m; + m->hashed = FALSE; + m->next_m = VM_PAGE_PACK_PTR(NULL); found_m = m; break; } - mp = &m->next; - } while ((m = *mp)); + mp = &m->next_m; + } while ((m = (vm_page_t)(VM_PAGE_UNPACK_PTR(*mp)))); - mem->next = bucket->pages; + mem->next_m = bucket->page_list; } else { - mem->next = VM_PAGE_NULL; + mem->next_m = VM_PAGE_PACK_PTR(NULL); } /* * insert new page at head of hash list */ - bucket->pages = mem; + bucket->page_list = VM_PAGE_PACK_PTR(mem); + mem->hashed = TRUE; lck_spin_unlock(bucket_lock); @@ -1212,7 +1751,7 @@ vm_page_replace( */ vm_page_free_unlocked(found_m, FALSE); } - vm_page_insert_internal(mem, object, offset, FALSE, FALSE, FALSE); + vm_page_insert_internal(mem, object, offset, VM_KERN_MEMORY_NONE, FALSE, FALSE, FALSE, FALSE, NULL); } /* @@ -1233,16 +1772,24 @@ vm_page_remove( vm_page_t this; lck_spin_t *bucket_lock; int hash_id; + task_t owner; + vm_object_t m_object; + + m_object = VM_PAGE_OBJECT(mem); XPR(XPR_VM_PAGE, "vm_page_remove, object 0x%X offset 0x%X page 0x%X\n", - mem->object, mem->offset, + m_object, mem->offset, mem, 0,0); - vm_object_lock_assert_exclusive(mem->object); + vm_object_lock_assert_exclusive(m_object); assert(mem->tabled); assert(!mem->cleaning); assert(!mem->laundry); + + if (VM_PAGE_PAGEABLE(mem)) { + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); + } #if 0 /* * we don't hold the page queue lock @@ -1254,70 +1801,113 @@ vm_page_remove( /* * Remove from the object_object/offset hash table */ - hash_id = vm_page_hash(mem->object, mem->offset); + hash_id = vm_page_hash(m_object, mem->offset); bucket = &vm_page_buckets[hash_id]; bucket_lock = &vm_page_bucket_locks[hash_id / BUCKETS_PER_LOCK]; lck_spin_lock(bucket_lock); - if ((this = bucket->pages) == mem) { + if ((this = (vm_page_t)(VM_PAGE_UNPACK_PTR(bucket->page_list))) == mem) { /* optimize for common case */ - bucket->pages = mem->next; + bucket->page_list = mem->next_m; } else { - vm_page_t *prev; + vm_page_packed_t *prev; - for (prev = &this->next; - (this = *prev) != mem; - prev = &this->next) + for (prev = &this->next_m; + (this = (vm_page_t)(VM_PAGE_UNPACK_PTR(*prev))) != mem; + prev = &this->next_m) continue; - *prev = this->next; + *prev = this->next_m; } #if MACH_PAGE_HASH_STATS bucket->cur_count--; #endif /* MACH_PAGE_HASH_STATS */ - + mem->hashed = FALSE; + this->next_m = VM_PAGE_PACK_PTR(NULL); lck_spin_unlock(bucket_lock); } /* * Now remove from the object's list of backed pages. */ - VM_PAGE_REMOVE(mem); + vm_page_remove_internal(mem); /* * And show that the object has one fewer resident * page. */ - assert(mem->object->resident_page_count > 0); - mem->object->resident_page_count--; + assert(m_object->resident_page_count > 0); + m_object->resident_page_count--; + + if (m_object->internal) { +#if DEBUG + assert(vm_page_internal_count); +#endif /* DEBUG */ + + OSAddAtomic(-1, &vm_page_internal_count); + } else { + assert(vm_page_external_count); + OSAddAtomic(-1, &vm_page_external_count); - if (!mem->object->internal && (mem->object->objq.next || mem->object->objq.prev)) { - if (mem->object->resident_page_count == 0) - vm_object_cache_remove(mem->object); + if (mem->xpmapped) { + assert(vm_page_xpmapped_external_count); + OSAddAtomic(-1, &vm_page_xpmapped_external_count); + } + } + if (!m_object->internal && (m_object->objq.next || m_object->objq.prev)) { + if (m_object->resident_page_count == 0) + vm_object_cache_remove(m_object); } if (VM_PAGE_WIRED(mem)) { - assert(mem->object->wired_page_count > 0); - mem->object->wired_page_count--; + assert(mem->wire_count > 0); + VM_OBJECT_WIRED_PAGE_UPDATE_START(m_object); + VM_OBJECT_WIRED_PAGE_REMOVE(m_object, mem); + VM_OBJECT_WIRED_PAGE_UPDATE_END(m_object, m_object->wire_tag); } - assert(mem->object->resident_page_count >= - mem->object->wired_page_count); + assert(m_object->resident_page_count >= + m_object->wired_page_count); if (mem->reusable) { - assert(mem->object->reusable_page_count > 0); - mem->object->reusable_page_count--; - assert(mem->object->reusable_page_count <= - mem->object->resident_page_count); + assert(m_object->reusable_page_count > 0); + m_object->reusable_page_count--; + assert(m_object->reusable_page_count <= + m_object->resident_page_count); mem->reusable = FALSE; OSAddAtomic(-1, &vm_page_stats_reusable.reusable_count); vm_page_stats_reusable.reused_remove++; - } else if (mem->object->all_reusable) { + } else if (m_object->all_reusable) { OSAddAtomic(-1, &vm_page_stats_reusable.reusable_count); vm_page_stats_reusable.reused_remove++; } - if (mem->object->purgable == VM_PURGABLE_VOLATILE) { + if (m_object->purgable == VM_PURGABLE_DENY) { + owner = TASK_NULL; + } else { + owner = m_object->vo_purgeable_owner; + } + if (owner && + (m_object->purgable == VM_PURGABLE_NONVOLATILE || + VM_PAGE_WIRED(mem))) { + /* less non-volatile bytes */ + ledger_debit(owner->ledger, + task_ledgers.purgeable_nonvolatile, + PAGE_SIZE); + /* less footprint */ + ledger_debit(owner->ledger, + task_ledgers.phys_footprint, + PAGE_SIZE); + } else if (owner && + (m_object->purgable == VM_PURGABLE_VOLATILE || + m_object->purgable == VM_PURGABLE_EMPTY)) { + assert(! VM_PAGE_WIRED(mem)); + /* less volatile bytes */ + ledger_debit(owner->ledger, + task_ledgers.purgeable_volatile, + PAGE_SIZE); + } + if (m_object->purgable == VM_PURGABLE_VOLATILE) { if (VM_PAGE_WIRED(mem)) { assert(vm_page_purgeable_wired_count > 0); OSAddAtomic(-1, &vm_page_purgeable_wired_count); @@ -1326,11 +1916,12 @@ vm_page_remove( OSAddAtomic(-1, &vm_page_purgeable_count); } } - if (mem->object->set_cache_attr == TRUE) - pmap_set_cache_attributes(mem->phys_page, 0); + + if (m_object->set_cache_attr == TRUE) + pmap_set_cache_attributes(VM_PAGE_GET_PHYS_PAGE(mem), 0); mem->tabled = FALSE; - mem->object = VM_OBJECT_NULL; + mem->vm_page_object = 0; mem->offset = (vm_object_offset_t) -1; } @@ -1344,13 +1935,55 @@ vm_page_remove( * The object must be locked. No side effects. */ -unsigned long vm_page_lookup_hint = 0; -unsigned long vm_page_lookup_hint_next = 0; -unsigned long vm_page_lookup_hint_prev = 0; -unsigned long vm_page_lookup_hint_miss = 0; -unsigned long vm_page_lookup_bucket_NULL = 0; -unsigned long vm_page_lookup_miss = 0; +#define VM_PAGE_HASH_LOOKUP_THRESHOLD 10 + +#if DEBUG_VM_PAGE_LOOKUP + +struct { + uint64_t vpl_total; + uint64_t vpl_empty_obj; + uint64_t vpl_bucket_NULL; + uint64_t vpl_hit_hint; + uint64_t vpl_hit_hint_next; + uint64_t vpl_hit_hint_prev; + uint64_t vpl_fast; + uint64_t vpl_slow; + uint64_t vpl_hit; + uint64_t vpl_miss; + + uint64_t vpl_fast_elapsed; + uint64_t vpl_slow_elapsed; +} vm_page_lookup_stats __attribute__((aligned(8))); + +#endif + +#define KDP_VM_PAGE_WALK_MAX 1000 + +vm_page_t +kdp_vm_page_lookup( + vm_object_t object, + vm_object_offset_t offset) +{ + vm_page_t cur_page; + int num_traversed = 0; + + if (not_in_kdp) { + panic("panic: kdp_vm_page_lookup done outside of kernel debugger"); + } + + vm_page_queue_iterate(&object->memq, cur_page, vm_page_t, listq) { + if (cur_page->offset == offset) { + return cur_page; + } + num_traversed++; + + if (num_traversed >= KDP_VM_PAGE_WALK_MAX) { + return VM_PAGE_NULL; + } + } + return VM_PAGE_NULL; +} vm_page_t vm_page_lookup( @@ -1359,46 +1992,64 @@ vm_page_lookup( { vm_page_t mem; vm_page_bucket_t *bucket; - queue_entry_t qe; - lck_spin_t *bucket_lock; + vm_page_queue_entry_t qe; + lck_spin_t *bucket_lock = NULL; int hash_id; +#if DEBUG_VM_PAGE_LOOKUP + uint64_t start, elapsed; + OSAddAtomic64(1, &vm_page_lookup_stats.vpl_total); +#endif vm_object_lock_assert_held(object); + + if (object->resident_page_count == 0) { +#if DEBUG_VM_PAGE_LOOKUP + OSAddAtomic64(1, &vm_page_lookup_stats.vpl_empty_obj); +#endif + return (VM_PAGE_NULL); + } + mem = object->memq_hint; if (mem != VM_PAGE_NULL) { - assert(mem->object == object); + assert(VM_PAGE_OBJECT(mem) == object); if (mem->offset == offset) { - vm_page_lookup_hint++; - return mem; +#if DEBUG_VM_PAGE_LOOKUP + OSAddAtomic64(1, &vm_page_lookup_stats.vpl_hit_hint); +#endif + return (mem); } - qe = queue_next(&mem->listq); + qe = (vm_page_queue_entry_t)vm_page_queue_next(&mem->listq); - if (! queue_end(&object->memq, qe)) { + if (! vm_page_queue_end(&object->memq, qe)) { vm_page_t next_page; - next_page = (vm_page_t) qe; - assert(next_page->object == object); + next_page = (vm_page_t)((uintptr_t)qe); + assert(VM_PAGE_OBJECT(next_page) == object); if (next_page->offset == offset) { - vm_page_lookup_hint_next++; object->memq_hint = next_page; /* new hint */ - return next_page; +#if DEBUG_VM_PAGE_LOOKUP + OSAddAtomic64(1, &vm_page_lookup_stats.vpl_hit_hint_next); +#endif + return (next_page); } } - qe = queue_prev(&mem->listq); + qe = (vm_page_queue_entry_t)vm_page_queue_prev(&mem->listq); - if (! queue_end(&object->memq, qe)) { + if (! vm_page_queue_end(&object->memq, qe)) { vm_page_t prev_page; - prev_page = (vm_page_t) qe; - assert(prev_page->object == object); + prev_page = (vm_page_t)((uintptr_t)qe); + assert(VM_PAGE_OBJECT(prev_page) == object); if (prev_page->offset == offset) { - vm_page_lookup_hint_prev++; object->memq_hint = prev_page; /* new hint */ - return prev_page; +#if DEBUG_VM_PAGE_LOOKUP + OSAddAtomic64(1, &vm_page_lookup_stats.vpl_hit_hint_prev); +#endif + return (prev_page); } } } @@ -1416,74 +2067,103 @@ vm_page_lookup( * at outside the scope of the hash bucket lock... this is a * really cheap optimiztion to avoid taking the lock */ - if (bucket->pages == VM_PAGE_NULL) { - vm_page_lookup_bucket_NULL++; - + if (!bucket->page_list) { +#if DEBUG_VM_PAGE_LOOKUP + OSAddAtomic64(1, &vm_page_lookup_stats.vpl_bucket_NULL); +#endif return (VM_PAGE_NULL); } - bucket_lock = &vm_page_bucket_locks[hash_id / BUCKETS_PER_LOCK]; - lck_spin_lock(bucket_lock); - - for (mem = bucket->pages; mem != VM_PAGE_NULL; mem = mem->next) { -#if 0 +#if DEBUG_VM_PAGE_LOOKUP + start = mach_absolute_time(); +#endif + if (object->resident_page_count <= VM_PAGE_HASH_LOOKUP_THRESHOLD) { /* - * we don't hold the page queue lock - * so this check isn't safe to make + * on average, it's roughly 3 times faster to run a short memq list + * than to take the spin lock and go through the hash list */ - VM_PAGE_CHECK(mem); -#endif - if ((mem->object == object) && (mem->offset == offset)) - break; - } - lck_spin_unlock(bucket_lock); + mem = (vm_page_t)vm_page_queue_first(&object->memq); - if (mem != VM_PAGE_NULL) { - if (object->memq_hint != VM_PAGE_NULL) { - vm_page_lookup_hint_miss++; + while (!vm_page_queue_end(&object->memq, (vm_page_queue_entry_t)mem)) { + + if (mem->offset == offset) + break; + + mem = (vm_page_t)vm_page_queue_next(&mem->listq); } - assert(mem->object == object); - object->memq_hint = mem; - } else - vm_page_lookup_miss++; + if (vm_page_queue_end(&object->memq, (vm_page_queue_entry_t)mem)) + mem = NULL; + } else { + vm_page_object_t packed_object; - return(mem); -} + packed_object = VM_PAGE_PACK_OBJECT(object); + bucket_lock = &vm_page_bucket_locks[hash_id / BUCKETS_PER_LOCK]; -/* - * vm_page_rename: - * - * Move the given memory entry from its - * current object to the specified target object/offset. - * - * The object must be locked. - */ -void -vm_page_rename( - register vm_page_t mem, - register vm_object_t new_object, - vm_object_offset_t new_offset, - boolean_t encrypted_ok) -{ - assert(mem->object != new_object); + lck_spin_lock(bucket_lock); - /* - * ENCRYPTED SWAP: - * The encryption key is based on the page's memory object - * (aka "pager") and paging offset. Moving the page to - * another VM object changes its "pager" and "paging_offset" - * so it has to be decrypted first, or we would lose the key. - * - * One exception is VM object collapsing, where we transfer pages - * from one backing object to its parent object. This operation also - * transfers the paging information, so the info - * should remain consistent. The caller (vm_object_do_collapse()) - * sets "encrypted_ok" in this case. - */ - if (!encrypted_ok && mem->encrypted) { - panic("vm_page_rename: page %p is encrypted\n", mem); + for (mem = (vm_page_t)(VM_PAGE_UNPACK_PTR(bucket->page_list)); + mem != VM_PAGE_NULL; + mem = (vm_page_t)(VM_PAGE_UNPACK_PTR(mem->next_m))) { +#if 0 + /* + * we don't hold the page queue lock + * so this check isn't safe to make + */ + VM_PAGE_CHECK(mem); +#endif + if ((mem->vm_page_object == packed_object) && (mem->offset == offset)) + break; + } + lck_spin_unlock(bucket_lock); + } + +#if DEBUG_VM_PAGE_LOOKUP + elapsed = mach_absolute_time() - start; + + if (bucket_lock) { + OSAddAtomic64(1, &vm_page_lookup_stats.vpl_slow); + OSAddAtomic64(elapsed, &vm_page_lookup_stats.vpl_slow_elapsed); + } else { + OSAddAtomic64(1, &vm_page_lookup_stats.vpl_fast); + OSAddAtomic64(elapsed, &vm_page_lookup_stats.vpl_fast_elapsed); + } + if (mem != VM_PAGE_NULL) + OSAddAtomic64(1, &vm_page_lookup_stats.vpl_hit); + else + OSAddAtomic64(1, &vm_page_lookup_stats.vpl_miss); +#endif + if (mem != VM_PAGE_NULL) { + assert(VM_PAGE_OBJECT(mem) == object); + + object->memq_hint = mem; } + return (mem); +} + + +/* + * vm_page_rename: + * + * Move the given memory entry from its + * current object to the specified target object/offset. + * + * The object must be locked. + */ +void +vm_page_rename( + vm_page_t mem, + vm_object_t new_object, + vm_object_offset_t new_offset) +{ + boolean_t internal_to_external, external_to_internal; + vm_tag_t tag; + vm_object_t m_object; + + m_object = VM_PAGE_OBJECT(mem); + + assert(m_object != new_object); + assert(m_object); XPR(XPR_VM_PAGE, "vm_page_rename, new object 0x%X, offset 0x%X page 0x%X\n", @@ -1496,8 +2176,39 @@ vm_page_rename( */ vm_page_lockspin_queues(); + internal_to_external = FALSE; + external_to_internal = FALSE; + + if (mem->vm_page_q_state == VM_PAGE_ON_ACTIVE_LOCAL_Q) { + /* + * it's much easier to get the vm_page_pageable_xxx accounting correct + * if we first move the page to the active queue... it's going to end + * up there anyway, and we don't do vm_page_rename's frequently enough + * for this to matter. + */ + vm_page_queues_remove(mem, FALSE); + vm_page_activate(mem); + } + if (VM_PAGE_PAGEABLE(mem)) { + if (m_object->internal && !new_object->internal) { + internal_to_external = TRUE; + } + if (!m_object->internal && new_object->internal) { + external_to_internal = TRUE; + } + } + + tag = m_object->wire_tag; vm_page_remove(mem, TRUE); - vm_page_insert_internal(mem, new_object, new_offset, TRUE, TRUE, FALSE); + vm_page_insert_internal(mem, new_object, new_offset, tag, TRUE, TRUE, FALSE, FALSE, NULL); + + if (internal_to_external) { + vm_page_pageable_internal_count--; + vm_page_pageable_external_count++; + } else if (external_to_internal) { + vm_page_pageable_external_count--; + vm_page_pageable_internal_count++; + } vm_page_unlock_queues(); } @@ -1525,7 +2236,8 @@ vm_page_init( } #endif *mem = vm_page_template; - mem->phys_page = phys_page; + + VM_PAGE_SET_PHYS_PAGE(mem, phys_page); #if 0 /* * we're leaving this turned off for now... currently pages @@ -1583,10 +2295,16 @@ vm_page_grab_fictitious(void) return vm_page_grab_fictitious_common(vm_page_fictitious_addr); } +int vm_guard_count; + + vm_page_t vm_page_grab_guard(void) { - return vm_page_grab_fictitious_common(vm_page_guard_addr); + vm_page_t page; + page = vm_page_grab_fictitious_common(vm_page_guard_addr); + if (page) OSAddAtomic(1, &vm_guard_count); + return page; } @@ -1599,10 +2317,13 @@ void vm_page_release_fictitious( vm_page_t m) { - assert(!m->free); + assert((m->vm_page_q_state == VM_PAGE_NOT_ON_Q) || (m->vm_page_q_state == VM_PAGE_IS_WIRED)); assert(m->fictitious); - assert(m->phys_page == vm_page_fictitious_addr || - m->phys_page == vm_page_guard_addr); + assert(VM_PAGE_GET_PHYS_PAGE(m) == vm_page_fictitious_addr || + VM_PAGE_GET_PHYS_PAGE(m) == vm_page_guard_addr); + + +if (VM_PAGE_GET_PHYS_PAGE(m) == vm_page_guard_addr) OSAddAtomic(-1, &vm_guard_count); c_vm_page_release_fictitious++; @@ -1667,8 +2388,8 @@ void vm_page_more_fictitious(void) } retval = kernel_memory_allocate(zone_map, - &addr, PAGE_SIZE, VM_PROT_ALL, - KMA_KOBJECT|KMA_NOPAGEWAIT); + &addr, PAGE_SIZE, 0, + KMA_KOBJECT|KMA_NOPAGEWAIT, VM_KERN_MEMORY_ZONE); if (retval != KERN_SUCCESS) { /* * No page was available. Drop the @@ -1679,6 +2400,7 @@ void vm_page_more_fictitious(void) vm_page_wait(THREAD_UNINT); return; } + zcram(vm_page_zone, addr, PAGE_SIZE); lck_mtx_unlock(&vm_page_alloc_lock); @@ -1700,12 +2422,134 @@ vm_pool_low(void) } +#if CONFIG_BACKGROUND_QUEUE + +void +vm_page_update_background_state(vm_page_t mem) +{ + if (vm_page_background_mode == VM_PAGE_BG_DISABLED) + return; + + if (mem->vm_page_in_background == FALSE) + return; + +#if BACKGROUNDQ_BASED_ON_QOS + if (proc_get_effective_thread_policy(current_thread(), TASK_POLICY_QOS) <= THREAD_QOS_LEGACY) + return; +#else + task_t my_task; + + my_task = current_task(); + + if (my_task) { + if (proc_get_effective_task_policy(my_task, TASK_POLICY_DARWIN_BG)) + return; + } +#endif + vm_page_lockspin_queues(); + + mem->vm_page_in_background = FALSE; + vm_page_background_promoted_count++; + + vm_page_remove_from_backgroundq(mem); + + vm_page_unlock_queues(); +} + + +void +vm_page_assign_background_state(vm_page_t mem) +{ + if (vm_page_background_mode == VM_PAGE_BG_DISABLED) + return; + +#if BACKGROUNDQ_BASED_ON_QOS + if (proc_get_effective_thread_policy(current_thread(), TASK_POLICY_QOS) <= THREAD_QOS_LEGACY) + mem->vm_page_in_background = TRUE; + else + mem->vm_page_in_background = FALSE; +#else + task_t my_task; + + my_task = current_task(); + + if (my_task) + mem->vm_page_in_background = proc_get_effective_task_policy(my_task, TASK_POLICY_DARWIN_BG); +#endif +} + + +void +vm_page_remove_from_backgroundq( + vm_page_t mem) +{ + vm_object_t m_object; + + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); + + if (mem->vm_page_on_backgroundq) { + vm_page_queue_remove(&vm_page_queue_background, mem, vm_page_t, vm_page_backgroundq); + + mem->vm_page_backgroundq.next = 0; + mem->vm_page_backgroundq.prev = 0; + mem->vm_page_on_backgroundq = FALSE; + + vm_page_background_count--; + + m_object = VM_PAGE_OBJECT(mem); + + if (m_object->internal) + vm_page_background_internal_count--; + else + vm_page_background_external_count--; + } else { + assert(VM_PAGE_UNPACK_PTR(mem->vm_page_backgroundq.next) == (uintptr_t)NULL && + VM_PAGE_UNPACK_PTR(mem->vm_page_backgroundq.prev) == (uintptr_t)NULL); + } +} + + +void +vm_page_add_to_backgroundq( + vm_page_t mem, + boolean_t first) +{ + vm_object_t m_object; + + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); + + if (vm_page_background_mode == VM_PAGE_BG_DISABLED) + return; + + if (mem->vm_page_on_backgroundq == FALSE) { + + m_object = VM_PAGE_OBJECT(mem); + + if (vm_page_background_exclude_external && !m_object->internal) + return; + + if (first == TRUE) + vm_page_queue_enter_first(&vm_page_queue_background, mem, vm_page_t, vm_page_backgroundq); + else + vm_page_queue_enter(&vm_page_queue_background, mem, vm_page_t, vm_page_backgroundq); + mem->vm_page_on_backgroundq = TRUE; + + vm_page_background_count++; + + if (m_object->internal) + vm_page_background_internal_count++; + else + vm_page_background_external_count++; + } +} + +#endif /* * this is an interface to support bring-up of drivers * on platforms with physical memory > 4G... */ -int vm_himemory_mode = 0; +int vm_himemory_mode = 2; /* @@ -1716,7 +2560,7 @@ int vm_himemory_mode = 0; unsigned int vm_lopages_allocated_q = 0; unsigned int vm_lopages_allocated_cpm_success = 0; unsigned int vm_lopages_allocated_cpm_failed = 0; -queue_head_t vm_lopage_queue_free; +vm_page_queue_head_t vm_lopage_queue_free __attribute__((aligned(VM_PACKED_POINTER_ALIGNMENT))); vm_page_t vm_page_grablo(void) @@ -1728,12 +2572,14 @@ vm_page_grablo(void) lck_mtx_lock_spin(&vm_page_queue_free_lock); - if ( !queue_empty(&vm_lopage_queue_free)) { - queue_remove_first(&vm_lopage_queue_free, + if ( !vm_page_queue_empty(&vm_lopage_queue_free)) { + vm_page_queue_remove_first(&vm_lopage_queue_free, mem, vm_page_t, pageq); assert(vm_lopage_free_count); + assert(mem->vm_page_q_state == VM_PAGE_ON_FREE_LOPAGE_Q); + mem->vm_page_q_state = VM_PAGE_NOT_ON_Q; vm_lopage_free_count--; vm_lopages_allocated_q++; @@ -1742,6 +2588,10 @@ vm_page_grablo(void) vm_lopage_refill = TRUE; lck_mtx_unlock(&vm_page_queue_free_lock); + +#if CONFIG_BACKGROUND_QUEUE + vm_page_assign_background_state(mem); +#endif } else { lck_mtx_unlock(&vm_page_queue_free_lock); @@ -1753,6 +2603,8 @@ vm_page_grablo(void) return (VM_PAGE_NULL); } + assert(mem->vm_page_q_state == VM_PAGE_NOT_ON_Q); + mem->busy = TRUE; vm_page_lockspin_queues(); @@ -1765,13 +2617,11 @@ vm_page_grablo(void) vm_page_unlock_queues(); } assert(mem->busy); - assert(!mem->free); assert(!mem->pmapped); assert(!mem->wpmapped); - assert(!pmap_is_noencrypt(mem->phys_page)); + assert(!pmap_is_noencrypt(VM_PAGE_GET_PHYS_PAGE(mem))); - mem->pageq.next = NULL; - mem->pageq.prev = NULL; + VM_PAGE_ZERO_PAGEQ_ENTRY(mem); return (mem); } @@ -1798,41 +2648,57 @@ vm_page_grablo(void) * request from the per-cpu queue. */ -#define COLOR_GROUPS_TO_STEAL 4 +#if CONFIG_SECLUDED_MEMORY +vm_page_t vm_page_grab_secluded(void); +#endif /* CONFIG_SECLUDED_MEMORY */ + +vm_page_t +vm_page_grab(void) +{ + return vm_page_grab_options(0); +} +#if HIBERNATION +boolean_t hibernate_rebuild_needed = FALSE; +#endif /* HIBERNATION */ vm_page_t -vm_page_grab( void ) +vm_page_grab_options( + int grab_options) { vm_page_t mem; - disable_preemption(); if ((mem = PROCESSOR_DATA(current_processor(), free_pages))) { return_page_from_cpu_list: + assert(mem->vm_page_q_state == VM_PAGE_ON_FREE_LOCAL_Q); + +#if HIBERNATION + if (hibernate_rebuild_needed) { + panic("%s:%d should not modify cpu->free_pages while hibernating", __FUNCTION__, __LINE__); + } +#endif /* HIBERNATION */ PROCESSOR_DATA(current_processor(), page_grab_count) += 1; - PROCESSOR_DATA(current_processor(), free_pages) = mem->pageq.next; - mem->pageq.next = NULL; + PROCESSOR_DATA(current_processor(), free_pages) = mem->snext; enable_preemption(); + VM_PAGE_ZERO_PAGEQ_ENTRY(mem); + mem->vm_page_q_state = VM_PAGE_NOT_ON_Q; - assert(mem->listq.next == NULL && mem->listq.prev == NULL); + assert(mem->listq.next == 0 && mem->listq.prev == 0); assert(mem->tabled == FALSE); - assert(mem->object == VM_OBJECT_NULL); + assert(mem->vm_page_object == 0); assert(!mem->laundry); - assert(!mem->free); - assert(pmap_verify_free(mem->phys_page)); + assert(pmap_verify_free(VM_PAGE_GET_PHYS_PAGE(mem))); assert(mem->busy); - assert(!mem->encrypted); assert(!mem->pmapped); assert(!mem->wpmapped); - assert(!mem->active); - assert(!mem->inactive); - assert(!mem->throttled); - assert(!mem->speculative); - assert(!pmap_is_noencrypt(mem->phys_page)); + assert(!pmap_is_noencrypt(VM_PAGE_GET_PHYS_PAGE(mem))); +#if CONFIG_BACKGROUND_QUEUE + vm_page_assign_background_state(mem); +#endif return mem; } enable_preemption(); @@ -1842,18 +2708,18 @@ return_page_from_cpu_list: * Optionally produce warnings if the wire or gobble * counts exceed some threshold. */ - if (vm_page_wire_count_warning > 0 - && vm_page_wire_count >= vm_page_wire_count_warning) { +#if VM_PAGE_WIRE_COUNT_WARNING + if (vm_page_wire_count >= VM_PAGE_WIRE_COUNT_WARNING) { printf("mk: vm_page_grab(): high wired page count of %d\n", vm_page_wire_count); - assert(vm_page_wire_count < vm_page_wire_count_warning); } - if (vm_page_gobble_count_warning > 0 - && vm_page_gobble_count >= vm_page_gobble_count_warning) { +#endif +#if VM_PAGE_GOBBLE_COUNT_WARNING + if (vm_page_gobble_count >= VM_PAGE_GOBBLE_COUNT_WARNING) { printf("mk: vm_page_grab(): high gobbled page count of %d\n", vm_page_gobble_count); - assert(vm_page_gobble_count < vm_page_gobble_count_warning); } +#endif lck_mtx_lock_spin(&vm_page_queue_free_lock); @@ -1863,14 +2729,37 @@ return_page_from_cpu_list: */ if ((vm_page_free_count < vm_page_free_reserved) && !(current_thread()->options & TH_OPT_VMPRIV)) { + /* no page for us in the free queue... */ lck_mtx_unlock(&vm_page_queue_free_lock); mem = VM_PAGE_NULL; + +#if CONFIG_SECLUDED_MEMORY + /* ... but can we try and grab from the secluded queue? */ + if (vm_page_secluded_count > 0 && + ((grab_options & VM_PAGE_GRAB_SECLUDED) || + task_can_use_secluded_mem(current_task()))) { + mem = vm_page_grab_secluded(); + if (grab_options & VM_PAGE_GRAB_SECLUDED) { + vm_page_secluded.grab_for_iokit++; + if (mem) { + vm_page_secluded.grab_for_iokit_success++; + } + } + if (mem) { + VM_CHECK_MEMORYSTATUS; + return mem; + } + } +#else /* CONFIG_SECLUDED_MEMORY */ + (void) grab_options; +#endif /* CONFIG_SECLUDED_MEMORY */ } else { vm_page_t head; vm_page_t tail; unsigned int pages_to_steal; unsigned int color; + unsigned int clump_end, sub_count; while ( vm_page_free_count == 0 ) { @@ -1899,58 +2788,87 @@ return_page_from_cpu_list: if (vm_page_free_count <= vm_page_free_reserved) pages_to_steal = 1; else { - pages_to_steal = COLOR_GROUPS_TO_STEAL * vm_colors; - - if (pages_to_steal > (vm_page_free_count - vm_page_free_reserved)) + if (vm_free_magazine_refill_limit <= (vm_page_free_count - vm_page_free_reserved)) + pages_to_steal = vm_free_magazine_refill_limit; + else pages_to_steal = (vm_page_free_count - vm_page_free_reserved); } color = PROCESSOR_DATA(current_processor(), start_color); head = tail = NULL; + vm_page_free_count -= pages_to_steal; + clump_end = sub_count = 0; + while (pages_to_steal--) { - if (--vm_page_free_count < vm_page_free_count_minimum) - vm_page_free_count_minimum = vm_page_free_count; - while (queue_empty(&vm_page_queue_free[color])) + while (vm_page_queue_empty(&vm_page_queue_free[color].qhead)) color = (color + 1) & vm_color_mask; - - queue_remove_first(&vm_page_queue_free[color], - mem, - vm_page_t, - pageq); - mem->pageq.next = NULL; - mem->pageq.prev = NULL; - - assert(!mem->active); - assert(!mem->inactive); - assert(!mem->throttled); - assert(!mem->speculative); +#if defined(__x86_64__) + vm_page_queue_remove_first_with_clump(&vm_page_queue_free[color].qhead, + mem, + vm_page_t, + pageq, + clump_end); +#else + vm_page_queue_remove_first(&vm_page_queue_free[color].qhead, + mem, + vm_page_t, + pageq); +#endif + + assert(mem->vm_page_q_state == VM_PAGE_ON_FREE_Q); + + VM_PAGE_ZERO_PAGEQ_ENTRY(mem); +#if defined(__arm__) || defined(__arm64__) color = (color + 1) & vm_color_mask; +#else + +#if DEVELOPMENT || DEBUG + + sub_count++; + if (clump_end) { + vm_clump_update_stats(sub_count); + sub_count = 0; + color = (color + 1) & vm_color_mask; + } +#else + if (clump_end) color = (color + 1) & vm_color_mask; + +#endif /* if DEVELOPMENT || DEBUG */ + +#endif /* if defined(__arm__) || defined(__arm64__) */ if (head == NULL) head = mem; else - tail->pageq.next = (queue_t)mem; + tail->snext = mem; tail = mem; - mem->pageq.prev = NULL; - assert(mem->listq.next == NULL && mem->listq.prev == NULL); + assert(mem->listq.next == 0 && mem->listq.prev == 0); assert(mem->tabled == FALSE); - assert(mem->object == VM_OBJECT_NULL); + assert(mem->vm_page_object == 0); assert(!mem->laundry); - assert(mem->free); - mem->free = FALSE; - assert(pmap_verify_free(mem->phys_page)); + mem->vm_page_q_state = VM_PAGE_ON_FREE_LOCAL_Q; + + assert(pmap_verify_free(VM_PAGE_GET_PHYS_PAGE(mem))); assert(mem->busy); - assert(!mem->free); - assert(!mem->encrypted); assert(!mem->pmapped); assert(!mem->wpmapped); - assert(!pmap_is_noencrypt(mem->phys_page)); + assert(!pmap_is_noencrypt(VM_PAGE_GET_PHYS_PAGE(mem))); + } +#if defined (__x86_64__) && (DEVELOPMENT || DEBUG) + vm_clump_update_stats(sub_count); +#endif + lck_mtx_unlock(&vm_page_queue_free_lock); + +#if HIBERNATION + if (hibernate_rebuild_needed) { + panic("%s:%d should not modify cpu->free_pages while hibernating", __FUNCTION__, __LINE__); } - PROCESSOR_DATA(current_processor(), free_pages) = head->pageq.next; +#endif /* HIBERNATION */ + PROCESSOR_DATA(current_processor(), free_pages) = head->snext; PROCESSOR_DATA(current_processor(), start_color) = color; /* @@ -1958,9 +2876,10 @@ return_page_from_cpu_list: */ PROCESSOR_DATA(current_processor(), page_grab_count) += 1; mem = head; - mem->pageq.next = NULL; + assert(mem->vm_page_q_state == VM_PAGE_ON_FREE_LOCAL_Q); - lck_mtx_unlock(&vm_page_queue_free_lock); + VM_PAGE_ZERO_PAGEQ_ENTRY(mem); + mem->vm_page_q_state = VM_PAGE_NOT_ON_Q; enable_preemption(); } @@ -1980,11 +2899,157 @@ return_page_from_cpu_list: thread_wakeup((event_t) &vm_page_free_wanted); VM_CHECK_MEMORYSTATUS; - -// dbgLog(mem->phys_page, vm_page_free_count, vm_page_wire_count, 4); /* (TEST/DEBUG) */ + + if (mem) { +// dbgLog(VM_PAGE_GET_PHYS_PAGE(mem), vm_page_free_count, vm_page_wire_count, 4); /* (TEST/DEBUG) */ + +#if CONFIG_BACKGROUND_QUEUE + vm_page_assign_background_state(mem); +#endif + } + return mem; +} + +#if CONFIG_SECLUDED_MEMORY +vm_page_t +vm_page_grab_secluded(void) +{ + vm_page_t mem; + vm_object_t object; + int refmod_state; + + if (vm_page_secluded_count == 0) { + /* no secluded pages to grab... */ + return VM_PAGE_NULL; + } + + /* secluded queue is protected by the VM page queue lock */ + vm_page_lock_queues(); + + if (vm_page_secluded_count == 0) { + /* no secluded pages to grab... */ + vm_page_unlock_queues(); + return VM_PAGE_NULL; + } + +#if 00 + /* can we grab from the secluded queue? */ + if (vm_page_secluded_count > vm_page_secluded_target || + (vm_page_secluded_count > 0 && + task_can_use_secluded_mem(current_task()))) { + /* OK */ + } else { + /* can't grab from secluded queue... */ + vm_page_unlock_queues(); + return VM_PAGE_NULL; + } +#endif + + /* we can grab a page from secluded queue! */ + assert((vm_page_secluded_count_free + + vm_page_secluded_count_inuse) == + vm_page_secluded_count); + if (current_task()->task_can_use_secluded_mem) { + assert(num_tasks_can_use_secluded_mem > 0); + } + assert(!vm_page_queue_empty(&vm_page_queue_secluded)); + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); + mem = (vm_page_t)vm_page_queue_first(&vm_page_queue_secluded); + assert(mem->vm_page_q_state == VM_PAGE_ON_SECLUDED_Q); + vm_page_queues_remove(mem, TRUE); + + object = VM_PAGE_OBJECT(mem); + + assert(!mem->fictitious); + assert(!VM_PAGE_WIRED(mem)); + if (object == VM_OBJECT_NULL) { + /* free for grab! */ + vm_page_unlock_queues(); + vm_page_secluded.grab_success_free++; + + assert(mem->busy); + assert(mem->vm_page_q_state == VM_PAGE_NOT_ON_Q); + assert(VM_PAGE_OBJECT(mem) == VM_OBJECT_NULL); + assert(mem->pageq.next == 0); + assert(mem->pageq.prev == 0); + assert(mem->listq.next == 0); + assert(mem->listq.prev == 0); +#if CONFIG_BACKGROUND_QUEUE + assert(mem->vm_page_on_backgroundq == 0); + assert(mem->vm_page_backgroundq.next == 0); + assert(mem->vm_page_backgroundq.prev == 0); +#endif /* CONFIG_BACKGROUND_QUEUE */ + return mem; + } + + assert(!object->internal); +// vm_page_pageable_external_count--; + + if (!vm_object_lock_try(object)) { +// printf("SECLUDED: page %p: object %p locked\n", mem, object); + vm_page_secluded.grab_failure_locked++; + reactivate_secluded_page: + vm_page_activate(mem); + vm_page_unlock_queues(); + return VM_PAGE_NULL; + } + if (mem->busy || + mem->cleaning || + mem->laundry) { + /* can't steal page in this state... */ + vm_object_unlock(object); + vm_page_secluded.grab_failure_state++; + goto reactivate_secluded_page; + } + + mem->busy = TRUE; + refmod_state = pmap_disconnect(VM_PAGE_GET_PHYS_PAGE(mem)); + if (refmod_state & VM_MEM_REFERENCED) { + mem->reference = TRUE; + } + if (refmod_state & VM_MEM_MODIFIED) { + SET_PAGE_DIRTY(mem, FALSE); + } + if (mem->dirty || mem->precious) { + /* can't grab a dirty page; re-activate */ +// printf("SECLUDED: dirty page %p\n", mem); + PAGE_WAKEUP_DONE(mem); + vm_page_secluded.grab_failure_dirty++; + vm_object_unlock(object); + goto reactivate_secluded_page; + } + if (mem->reference) { + /* it's been used but we do need to grab a page... */ + } + + vm_page_unlock_queues(); + + /* finish what vm_page_free() would have done... */ + vm_page_free_prepare_object(mem, TRUE); + vm_object_unlock(object); + object = VM_OBJECT_NULL; + if (vm_page_free_verify) { + assert(pmap_verify_free(VM_PAGE_GET_PHYS_PAGE(mem))); + } + pmap_clear_noencrypt(VM_PAGE_GET_PHYS_PAGE(mem)); + vm_page_secluded.grab_success_other++; + + assert(mem->busy); + assert(mem->vm_page_q_state == VM_PAGE_NOT_ON_Q); + assert(VM_PAGE_OBJECT(mem) == VM_OBJECT_NULL); + assert(mem->pageq.next == 0); + assert(mem->pageq.prev == 0); + assert(mem->listq.next == 0); + assert(mem->listq.prev == 0); +#if CONFIG_BACKGROUND_QUEUE + assert(mem->vm_page_on_backgroundq == 0); + assert(mem->vm_page_backgroundq.next == 0); + assert(mem->vm_page_backgroundq.prev == 0); +#endif /* CONFIG_BACKGROUND_QUEUE */ return mem; } +#endif /* CONFIG_SECLUDED_MEMORY */ /* * vm_page_release: @@ -1994,62 +3059,112 @@ return_page_from_cpu_list: void vm_page_release( - register vm_page_t mem) + vm_page_t mem, + boolean_t page_queues_locked) { unsigned int color; int need_wakeup = 0; int need_priv_wakeup = 0; +#if CONFIG_SECLUDED_MEMORY + int need_secluded_wakeup = 0; +#endif /* CONFIG_SECLUDED_MEMORY */ + if (page_queues_locked) { + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); + } else { + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_NOTOWNED); + } assert(!mem->private && !mem->fictitious); if (vm_page_free_verify) { - assert(pmap_verify_free(mem->phys_page)); + assert(pmap_verify_free(VM_PAGE_GET_PHYS_PAGE(mem))); } -// dbgLog(mem->phys_page, vm_page_free_count, vm_page_wire_count, 5); /* (TEST/DEBUG) */ +// dbgLog(VM_PAGE_GET_PHYS_PAGE(mem), vm_page_free_count, vm_page_wire_count, 5); /* (TEST/DEBUG) */ - pmap_clear_noencrypt(mem->phys_page); + pmap_clear_noencrypt(VM_PAGE_GET_PHYS_PAGE(mem)); lck_mtx_lock_spin(&vm_page_queue_free_lock); -#if DEBUG - if (mem->free) - panic("vm_page_release"); -#endif + assert(mem->vm_page_q_state == VM_PAGE_NOT_ON_Q); assert(mem->busy); assert(!mem->laundry); - assert(mem->object == VM_OBJECT_NULL); - assert(mem->pageq.next == NULL && - mem->pageq.prev == NULL); - assert(mem->listq.next == NULL && - mem->listq.prev == NULL); - + assert(mem->vm_page_object == 0); + assert(mem->pageq.next == 0 && mem->pageq.prev == 0); + assert(mem->listq.next == 0 && mem->listq.prev == 0); +#if CONFIG_BACKGROUND_QUEUE + assert(mem->vm_page_backgroundq.next == 0 && + mem->vm_page_backgroundq.prev == 0 && + mem->vm_page_on_backgroundq == FALSE); +#endif if ((mem->lopage == TRUE || vm_lopage_refill == TRUE) && vm_lopage_free_count < vm_lopage_free_limit && - mem->phys_page < max_valid_low_ppnum) { + VM_PAGE_GET_PHYS_PAGE(mem) < max_valid_low_ppnum) { /* * this exists to support hardware controllers * incapable of generating DMAs with more than 32 bits * of address on platforms with physical memory > 4G... */ - queue_enter_first(&vm_lopage_queue_free, - mem, - vm_page_t, - pageq); + vm_page_queue_enter_first(&vm_lopage_queue_free, + mem, + vm_page_t, + pageq); vm_lopage_free_count++; if (vm_lopage_free_count >= vm_lopage_free_limit) vm_lopage_refill = FALSE; + mem->vm_page_q_state = VM_PAGE_ON_FREE_LOPAGE_Q; mem->lopage = TRUE; - } else { +#if CONFIG_SECLUDED_MEMORY + } else if (vm_page_free_count > vm_page_free_reserved && + vm_page_secluded_count < vm_page_secluded_target && + num_tasks_can_use_secluded_mem == 0) { + /* + * XXX FBDP TODO: also avoid refilling secluded queue + * when some IOKit objects are already grabbing from it... + */ + if (!page_queues_locked) { + if (!vm_page_trylock_queues()) { + /* take locks in right order */ + lck_mtx_unlock(&vm_page_queue_free_lock); + vm_page_lock_queues(); + lck_mtx_lock_spin(&vm_page_queue_free_lock); + } + } mem->lopage = FALSE; - mem->free = TRUE; - - color = mem->phys_page & vm_color_mask; - queue_enter_first(&vm_page_queue_free[color], - mem, - vm_page_t, - pageq); + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); + vm_page_queue_enter_first(&vm_page_queue_secluded, + mem, + vm_page_t, + pageq); + mem->vm_page_q_state = VM_PAGE_ON_SECLUDED_Q; + vm_page_secluded_count++; + vm_page_secluded_count_free++; + if (!page_queues_locked) { + vm_page_unlock_queues(); + } + LCK_MTX_ASSERT(&vm_page_queue_free_lock, LCK_MTX_ASSERT_OWNED); + if (vm_page_free_wanted_secluded > 0) { + vm_page_free_wanted_secluded--; + need_secluded_wakeup = 1; + } +#endif /* CONFIG_SECLUDED_MEMORY */ + } else { + mem->lopage = FALSE; + mem->vm_page_q_state = VM_PAGE_ON_FREE_Q; + + color = VM_PAGE_GET_COLOR(mem); +#if defined(__x86_64__) + vm_page_queue_enter_clump(&vm_page_queue_free[color].qhead, + mem, + vm_page_t, + pageq); +#else + vm_page_queue_enter(&vm_page_queue_free[color].qhead, + mem, + vm_page_t, + pageq); +#endif vm_page_free_count++; /* * Check if we should wake up someone waiting for page. @@ -2075,6 +3190,12 @@ vm_page_release( if (vm_page_free_wanted_privileged > 0) { vm_page_free_wanted_privileged--; need_priv_wakeup = 1; +#if CONFIG_SECLUDED_MEMORY + } else if (vm_page_free_wanted_secluded > 0 && + vm_page_free_count > vm_page_free_reserved) { + vm_page_free_wanted_secluded--; + need_secluded_wakeup = 1; +#endif /* CONFIG_SECLUDED_MEMORY */ } else if (vm_page_free_wanted > 0 && vm_page_free_count > vm_page_free_reserved) { vm_page_free_wanted--; @@ -2085,12 +3206,58 @@ vm_page_release( if (need_priv_wakeup) thread_wakeup_one((event_t) &vm_page_free_wanted_privileged); +#if CONFIG_SECLUDED_MEMORY + else if (need_secluded_wakeup) + thread_wakeup_one((event_t) &vm_page_free_wanted_secluded); +#endif /* CONFIG_SECLUDED_MEMORY */ else if (need_wakeup) thread_wakeup_one((event_t) &vm_page_free_count); VM_CHECK_MEMORYSTATUS; } +/* + * This version of vm_page_release() is used only at startup + * when we are single-threaded and pages are being released + * for the first time. Hence, no locking or unnecessary checks are made. + * Note: VM_CHECK_MEMORYSTATUS invoked by the caller. + */ +void +vm_page_release_startup( + vm_page_t mem) +{ + vm_page_queue_t queue_free; + + if (vm_lopage_free_count < vm_lopage_free_limit && + VM_PAGE_GET_PHYS_PAGE(mem) < max_valid_low_ppnum) { + mem->lopage = TRUE; + mem->vm_page_q_state = VM_PAGE_ON_FREE_LOPAGE_Q; + vm_lopage_free_count++; + queue_free = &vm_lopage_queue_free; +#if CONFIG_SECLUDED_MEMORY + } else if (vm_page_secluded_count < vm_page_secluded_target) { + mem->lopage = FALSE; + mem->vm_page_q_state = VM_PAGE_ON_SECLUDED_Q; + vm_page_secluded_count++; + vm_page_secluded_count_free++; + queue_free = &vm_page_queue_secluded; +#endif /* CONFIG_SECLUDED_MEMORY */ + } else { + mem->lopage = FALSE; + mem->vm_page_q_state = VM_PAGE_ON_FREE_Q; + vm_page_free_count++; + queue_free = &vm_page_queue_free[VM_PAGE_GET_COLOR(mem)].qhead; + } + if (mem->vm_page_q_state == VM_PAGE_ON_FREE_Q) { +#if defined(__x86_64__) + vm_page_queue_enter_clump(queue_free, mem, vm_page_t, pageq); +#else + vm_page_queue_enter(queue_free, mem, vm_page_t, pageq); +#endif + } else + vm_page_queue_enter_first(queue_free, mem, vm_page_t, pageq); +} + /* * vm_page_wait: * @@ -2123,31 +3290,63 @@ vm_page_wait( lck_mtx_unlock(&vm_page_queue_free_lock); return TRUE; } - if (vm_page_free_count < vm_page_free_target) { - if (is_privileged) { - if (vm_page_free_wanted_privileged++ == 0) - need_wakeup = 1; - wait_result = assert_wait((event_t)&vm_page_free_wanted_privileged, interruptible); - } else { - if (vm_page_free_wanted++ == 0) - need_wakeup = 1; - wait_result = assert_wait((event_t)&vm_page_free_count, interruptible); - } + if (vm_page_free_count >= vm_page_free_target) { lck_mtx_unlock(&vm_page_queue_free_lock); - counter(c_vm_page_wait_block++); + return TRUE; + } - if (need_wakeup) - thread_wakeup((event_t)&vm_page_free_wanted); - - if (wait_result == THREAD_WAITING) - wait_result = thread_block(THREAD_CONTINUE_NULL); - - return(wait_result == THREAD_AWAKENED); + if (is_privileged) { + if (vm_page_free_wanted_privileged++ == 0) + need_wakeup = 1; + wait_result = assert_wait((event_t)&vm_page_free_wanted_privileged, interruptible); +#if CONFIG_SECLUDED_MEMORY + } else if (secluded_for_apps && + task_can_use_secluded_mem(current_task())) { +#if 00 + /* XXX FBDP: need pageq lock for this... */ + /* XXX FBDP: might wait even if pages available, */ + /* XXX FBDP: hopefully not for too long... */ + if (vm_page_secluded_count > 0) { + lck_mtx_unlock(&vm_page_queue_free_lock); + return TRUE; + } +#endif + if (vm_page_free_wanted_secluded++ == 0) { + need_wakeup = 1; + } + wait_result = assert_wait( + (event_t)&vm_page_free_wanted_secluded, + interruptible); +#endif /* CONFIG_SECLUDED_MEMORY */ } else { - lck_mtx_unlock(&vm_page_queue_free_lock); - return TRUE; + if (vm_page_free_wanted++ == 0) + need_wakeup = 1; + wait_result = assert_wait((event_t)&vm_page_free_count, + interruptible); + } + lck_mtx_unlock(&vm_page_queue_free_lock); + counter(c_vm_page_wait_block++); + + if (need_wakeup) + thread_wakeup((event_t)&vm_page_free_wanted); + + if (wait_result == THREAD_WAITING) { + VM_DEBUG_EVENT(vm_page_wait_block, VM_PAGE_WAIT_BLOCK, DBG_FUNC_START, + vm_page_free_wanted_privileged, + vm_page_free_wanted, +#if CONFIG_SECLUDED_MEMORY + vm_page_free_wanted_secluded, +#else /* CONFIG_SECLUDED_MEMORY */ + 0, +#endif /* CONFIG_SECLUDED_MEMORY */ + 0); + wait_result = thread_block(THREAD_CONTINUE_NULL); + VM_DEBUG_EVENT(vm_page_wait_block, + VM_PAGE_WAIT_BLOCK, DBG_FUNC_END, 0, 0, 0, 0); } + + return (wait_result == THREAD_AWAKENED); } /* @@ -2164,27 +3363,17 @@ vm_page_alloc( vm_object_t object, vm_object_offset_t offset) { - register vm_page_t mem; - - vm_object_lock_assert_exclusive(object); - mem = vm_page_grab(); - if (mem == VM_PAGE_NULL) - return VM_PAGE_NULL; - - vm_page_insert(mem, object, offset); - - return(mem); -} - -vm_page_t -vm_page_alloclo( - vm_object_t object, - vm_object_offset_t offset) -{ - register vm_page_t mem; + vm_page_t mem; + int grab_options; vm_object_lock_assert_exclusive(object); - mem = vm_page_grablo(); + grab_options = 0; +#if CONFIG_SECLUDED_MEMORY + if (object->can_grab_secluded) { + grab_options |= VM_PAGE_GRAB_SECLUDED; + } +#endif /* CONFIG_SECLUDED_MEMORY */ + mem = vm_page_grab_options(grab_options); if (mem == VM_PAGE_NULL) return VM_PAGE_NULL; @@ -2193,7 +3382,6 @@ vm_page_alloclo( return(mem); } - /* * vm_page_alloc_guard: * @@ -2207,7 +3395,7 @@ vm_page_alloc_guard( vm_object_t object, vm_object_offset_t offset) { - register vm_page_t mem; + vm_page_t mem; vm_object_lock_assert_exclusive(object); mem = vm_page_grab_guard(); @@ -2243,16 +3431,17 @@ void vm_page_free_prepare_queues( vm_page_t mem) { + vm_object_t m_object; + VM_PAGE_CHECK(mem); - assert(!mem->free); + + assert(mem->vm_page_q_state != VM_PAGE_ON_FREE_Q); assert(!mem->cleaning); -#if DEBUG - lck_mtx_assert(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); - if (mem->free) - panic("vm_page_free: freeing page on free list\n"); -#endif - if (mem->object) { - vm_object_lock_assert_exclusive(mem->object); + m_object = VM_PAGE_OBJECT(mem); + + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); + if (m_object) { + vm_object_lock_assert_exclusive(m_object); } if (mem->laundry) { /* @@ -2265,24 +3454,55 @@ vm_page_free_prepare_queues( vm_pageout_steal_laundry(mem, TRUE); counter(++c_laundry_pages_freed); } - - VM_PAGE_QUEUES_REMOVE(mem); /* clears local/active/inactive/throttled/speculative */ + + vm_page_queues_remove(mem, TRUE); if (VM_PAGE_WIRED(mem)) { - if (mem->object) { - assert(mem->object->wired_page_count > 0); - mem->object->wired_page_count--; - assert(mem->object->resident_page_count >= - mem->object->wired_page_count); + assert(mem->wire_count > 0); - if (mem->object->purgable == VM_PURGABLE_VOLATILE) { + if (m_object) { + + VM_OBJECT_WIRED_PAGE_UPDATE_START(m_object); + VM_OBJECT_WIRED_PAGE_REMOVE(m_object, mem); + VM_OBJECT_WIRED_PAGE_UPDATE_END(m_object, m_object->wire_tag); + + assert(m_object->resident_page_count >= + m_object->wired_page_count); + + if (m_object->purgable == VM_PURGABLE_VOLATILE) { OSAddAtomic(+1, &vm_page_purgeable_count); assert(vm_page_purgeable_wired_count > 0); OSAddAtomic(-1, &vm_page_purgeable_wired_count); } + if ((m_object->purgable == VM_PURGABLE_VOLATILE || + m_object->purgable == VM_PURGABLE_EMPTY) && + m_object->vo_purgeable_owner != TASK_NULL) { + task_t owner; + + owner = m_object->vo_purgeable_owner; + /* + * While wired, this page was accounted + * as "non-volatile" but it should now + * be accounted as "volatile". + */ + /* one less "non-volatile"... */ + ledger_debit(owner->ledger, + task_ledgers.purgeable_nonvolatile, + PAGE_SIZE); + /* ... and "phys_footprint" */ + ledger_debit(owner->ledger, + task_ledgers.phys_footprint, + PAGE_SIZE); + /* one more "volatile" */ + ledger_credit(owner->ledger, + task_ledgers.purgeable_volatile, + PAGE_SIZE); + } } if (!mem->private && !mem->fictitious) vm_page_wire_count--; + + mem->vm_page_q_state = VM_PAGE_NOT_ON_Q; mem->wire_count = 0; assert(!mem->gobbled); } else if (mem->gobbled) { @@ -2306,10 +3526,19 @@ vm_page_free_prepare_object( if (mem->private) { mem->private = FALSE; mem->fictitious = TRUE; - mem->phys_page = vm_page_fictitious_addr; + VM_PAGE_SET_PHYS_PAGE(mem, vm_page_fictitious_addr); } if ( !mem->fictitious) { - vm_page_init(mem, mem->phys_page, mem->lopage); + assert(mem->pageq.next == 0); + assert(mem->pageq.prev == 0); + assert(mem->listq.next == 0); + assert(mem->listq.prev == 0); +#if CONFIG_BACKGROUND_QUEUE + assert(mem->vm_page_backgroundq.next == 0); + assert(mem->vm_page_backgroundq.prev == 0); +#endif /* CONFIG_BACKGROUND_QUEUE */ + assert(mem->next_m == 0); + vm_page_init(mem, VM_PAGE_GET_PHYS_PAGE(mem), mem->lopage); } } @@ -2331,7 +3560,8 @@ vm_page_free( if (mem->fictitious) { vm_page_release_fictitious(mem); } else { - vm_page_release(mem); + vm_page_release(mem, + TRUE); /* page queues are locked */ } } @@ -2350,7 +3580,7 @@ vm_page_free_unlocked( if (mem->fictitious) { vm_page_release_fictitious(mem); } else { - vm_page_release(mem); + vm_page_release(mem, FALSE); /* page queues are not locked */ } } @@ -2360,6 +3590,9 @@ vm_page_free_unlocked( * as blocked up by vm_pageout_scan(). * The big win is not having to take the free list lock once * per page. + * + * The VM page queues lock (vm_page_queue_lock) should NOT be held. + * The VM page free queues lock (vm_page_queue_free_lock) should NOT be held. */ void vm_page_free_list( @@ -2371,6 +3604,9 @@ vm_page_free_list( vm_page_t local_freeq; int pg_count; + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_NOTOWNED); + LCK_MTX_ASSERT(&vm_page_queue_free_lock, LCK_MTX_ASSERT_NOTOWNED); + while (freeq) { pg_count = 0; @@ -2385,18 +3621,19 @@ vm_page_free_list( */ while (mem && pg_count < 64) { - assert(!mem->inactive); - assert(!mem->active); - assert(!mem->throttled); - assert(!mem->free); - assert(!mem->speculative); - assert(!VM_PAGE_WIRED(mem)); - assert(mem->pageq.prev == NULL); + assert((mem->vm_page_q_state == VM_PAGE_NOT_ON_Q) || + (mem->vm_page_q_state == VM_PAGE_IS_WIRED)); +#if CONFIG_BACKGROUND_QUEUE + assert(mem->vm_page_backgroundq.next == 0 && + mem->vm_page_backgroundq.prev == 0 && + mem->vm_page_on_backgroundq == FALSE); +#endif + nxt = mem->snext; + mem->snext = NULL; + assert(mem->pageq.prev == 0); - nxt = (vm_page_t)(mem->pageq.next); - if (vm_page_free_verify && !mem->fictitious && !mem->private) { - assert(pmap_verify_free(mem->phys_page)); + assert(pmap_verify_free(VM_PAGE_GET_PHYS_PAGE(mem))); } if (prepare_object == TRUE) vm_page_free_prepare_object(mem, TRUE); @@ -2406,9 +3643,14 @@ vm_page_free_list( if ((mem->lopage == TRUE || vm_lopage_refill == TRUE) && vm_lopage_free_count < vm_lopage_free_limit && - mem->phys_page < max_valid_low_ppnum) { - mem->pageq.next = NULL; - vm_page_release(mem); + VM_PAGE_GET_PHYS_PAGE(mem) < max_valid_low_ppnum) { + vm_page_release(mem, FALSE); /* page queues are not locked */ +#if CONFIG_SECLUDED_MEMORY + } else if (vm_page_secluded_count < vm_page_secluded_target && + num_tasks_can_use_secluded_mem == 0) { + vm_page_release(mem, + FALSE); /* page queues are not locked */ +#endif /* CONFIG_SECLUDED_MEMORY */ } else { /* * IMPORTANT: we can't set the page "free" here @@ -2419,15 +3661,15 @@ vm_page_free_list( * cause trouble because the page is not actually * in the free queue yet... */ - mem->pageq.next = (queue_entry_t)local_freeq; + mem->snext = local_freeq; local_freeq = mem; pg_count++; - pmap_clear_noencrypt(mem->phys_page); + pmap_clear_noencrypt(VM_PAGE_GET_PHYS_PAGE(mem)); } } else { - assert(mem->phys_page == vm_page_fictitious_addr || - mem->phys_page == vm_page_guard_addr); + assert(VM_PAGE_GET_PHYS_PAGE(mem) == vm_page_fictitious_addr || + VM_PAGE_GET_PHYS_PAGE(mem) == vm_page_guard_addr); vm_page_release_fictitious(mem); } mem = nxt; @@ -2438,23 +3680,34 @@ vm_page_free_list( unsigned int avail_free_count; unsigned int need_wakeup = 0; unsigned int need_priv_wakeup = 0; +#if CONFIG_SECLUDED_MEMORY + unsigned int need_wakeup_secluded = 0; +#endif /* CONFIG_SECLUDED_MEMORY */ lck_mtx_lock_spin(&vm_page_queue_free_lock); while (mem) { int color; - nxt = (vm_page_t)(mem->pageq.next); + nxt = mem->snext; - assert(!mem->free); + assert(mem->vm_page_q_state == VM_PAGE_NOT_ON_Q); assert(mem->busy); - mem->free = TRUE; - - color = mem->phys_page & vm_color_mask; - queue_enter_first(&vm_page_queue_free[color], - mem, - vm_page_t, - pageq); + mem->lopage = FALSE; + mem->vm_page_q_state = VM_PAGE_ON_FREE_Q; + + color = VM_PAGE_GET_COLOR(mem); +#if defined(__x86_64__) + vm_page_queue_enter_clump(&vm_page_queue_free[color].qhead, + mem, + vm_page_t, + pageq); +#else + vm_page_queue_enter(&vm_page_queue_free[color].qhead, + mem, + vm_page_t, + pageq); +#endif mem = nxt; } vm_page_free_count += pg_count; @@ -2468,10 +3721,31 @@ vm_page_free_list( avail_free_count = 0; } else { need_priv_wakeup = vm_page_free_wanted_privileged; - vm_page_free_wanted_privileged = 0; avail_free_count -= vm_page_free_wanted_privileged; + vm_page_free_wanted_privileged = 0; + } + } +#if CONFIG_SECLUDED_MEMORY + if (vm_page_free_wanted_secluded > 0 && + avail_free_count > vm_page_free_reserved) { + unsigned int available_pages; + available_pages = (avail_free_count - + vm_page_free_reserved); + if (available_pages < + vm_page_free_wanted_secluded) { + need_wakeup_secluded = available_pages; + vm_page_free_wanted_secluded -= + available_pages; + avail_free_count -= available_pages; + } else { + need_wakeup_secluded = + vm_page_free_wanted_secluded; + avail_free_count -= + vm_page_free_wanted_secluded; + vm_page_free_wanted_secluded = 0; } } +#endif /* CONFIG_SECLUDED_MEMORY */ if (vm_page_free_wanted > 0 && avail_free_count > vm_page_free_reserved) { unsigned int available_pages; @@ -2495,6 +3769,21 @@ vm_page_free_list( */ thread_wakeup((event_t)&vm_page_free_wanted_privileged); } +#if CONFIG_SECLUDED_MEMORY + if (need_wakeup_secluded != 0 && + vm_page_free_wanted_secluded == 0) { + thread_wakeup((event_t) + &vm_page_free_wanted_secluded); + } else { + for (; + need_wakeup_secluded != 0; + need_wakeup_secluded--) { + thread_wakeup_one( + (event_t) + &vm_page_free_wanted_secluded); + } + } +#endif /* CONFIG_SECLUDED_MEMORY */ if (need_wakeup != 0 && vm_page_free_wanted == 0) { /* * We don't expect to have any more waiters @@ -2524,16 +3813,23 @@ vm_page_free_list( * * The page's object and the page queues must be locked. */ + + void vm_page_wire( - register vm_page_t mem) + vm_page_t mem, + vm_tag_t tag, + boolean_t check_memorystatus) { + vm_object_t m_object; + + m_object = VM_PAGE_OBJECT(mem); -// dbgLog(current_thread(), mem->offset, mem->object, 1); /* (TEST/DEBUG) */ +// dbgLog(current_thread(), mem->offset, m_object, 1); /* (TEST/DEBUG) */ VM_PAGE_CHECK(mem); - if (mem->object) { - vm_object_lock_assert_exclusive(mem->object); + if (m_object) { + vm_object_lock_assert_exclusive(m_object); } else { /* * In theory, the page should be in an object before it @@ -2545,27 +3841,50 @@ vm_page_wire( * that page and update it at the same time. */ } -#if DEBUG - lck_mtx_assert(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); -#endif + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); if ( !VM_PAGE_WIRED(mem)) { - if (mem->pageout_queue) { - mem->pageout = FALSE; - vm_pageout_throttle_up(mem); - } - VM_PAGE_QUEUES_REMOVE(mem); + if (mem->laundry) + vm_pageout_steal_laundry(mem, TRUE); + + vm_page_queues_remove(mem, TRUE); + + assert(mem->wire_count == 0); + mem->vm_page_q_state = VM_PAGE_IS_WIRED; + + if (m_object) { - if (mem->object) { - mem->object->wired_page_count++; - assert(mem->object->resident_page_count >= - mem->object->wired_page_count); - if (mem->object->purgable == VM_PURGABLE_VOLATILE) { + VM_OBJECT_WIRED_PAGE_UPDATE_START(m_object); + VM_OBJECT_WIRED_PAGE_ADD(m_object, mem); + VM_OBJECT_WIRED_PAGE_UPDATE_END(m_object, tag); + + assert(m_object->resident_page_count >= + m_object->wired_page_count); + if (m_object->purgable == VM_PURGABLE_VOLATILE) { assert(vm_page_purgeable_count > 0); OSAddAtomic(-1, &vm_page_purgeable_count); OSAddAtomic(1, &vm_page_purgeable_wired_count); } - if (mem->object->all_reusable) { + if ((m_object->purgable == VM_PURGABLE_VOLATILE || + m_object->purgable == VM_PURGABLE_EMPTY) && + m_object->vo_purgeable_owner != TASK_NULL) { + task_t owner; + + owner = m_object->vo_purgeable_owner; + /* less volatile bytes */ + ledger_debit(owner->ledger, + task_ledgers.purgeable_volatile, + PAGE_SIZE); + /* more not-quite-volatile bytes */ + ledger_credit(owner->ledger, + task_ledgers.purgeable_nonvolatile, + PAGE_SIZE); + /* more footprint */ + ledger_credit(owner->ledger, + task_ledgers.phys_footprint, + PAGE_SIZE); + } + if (m_object->all_reusable) { /* * Wired pages are not counted as "re-usable" * in "all_reusable" VM objects, so nothing @@ -2577,7 +3896,7 @@ vm_page_wire( * wired, so adjust its state and the * accounting. */ - vm_object_reuse_pages(mem->object, + vm_object_reuse_pages(m_object, mem->offset, mem->offset+PAGE_SIZE_64, FALSE); @@ -2591,49 +3910,19 @@ vm_page_wire( vm_page_gobble_count--; mem->gobbled = FALSE; - VM_CHECK_MEMORYSTATUS; - - /* - * ENCRYPTED SWAP: - * The page could be encrypted, but - * We don't have to decrypt it here - * because we don't guarantee that the - * data is actually valid at this point. - * The page will get decrypted in - * vm_fault_wire() if needed. - */ + if (check_memorystatus == TRUE) { + VM_CHECK_MEMORYSTATUS; + } } assert(!mem->gobbled); + assert(mem->vm_page_q_state == VM_PAGE_IS_WIRED); mem->wire_count++; + if (__improbable(mem->wire_count == 0)) { + panic("vm_page_wire(%p): wire_count overflow", mem); + } VM_PAGE_CHECK(mem); } -/* - * vm_page_gobble: - * - * Mark this page as consumed by the vm/ipc/xmm subsystems. - * - * Called only for freshly vm_page_grab()ed pages - w/ nothing locked. - */ -void -vm_page_gobble( - register vm_page_t mem) -{ - vm_page_lockspin_queues(); - VM_PAGE_CHECK(mem); - - assert(!mem->gobbled); - assert( !VM_PAGE_WIRED(mem)); - - if (!mem->gobbled && !VM_PAGE_WIRED(mem)) { - if (!mem->private && !mem->fictitious) - vm_page_wire_count++; - } - vm_page_gobble_count++; - mem->gobbled = TRUE; - vm_page_unlock_queues(); -} - /* * vm_page_unwire: * @@ -2647,34 +3936,61 @@ vm_page_unwire( vm_page_t mem, boolean_t queueit) { + vm_object_t m_object; + + m_object = VM_PAGE_OBJECT(mem); -// dbgLog(current_thread(), mem->offset, mem->object, 0); /* (TEST/DEBUG) */ +// dbgLog(current_thread(), mem->offset, m_object, 0); /* (TEST/DEBUG) */ VM_PAGE_CHECK(mem); assert(VM_PAGE_WIRED(mem)); - assert(mem->object != VM_OBJECT_NULL); -#if DEBUG - vm_object_lock_assert_exclusive(mem->object); - lck_mtx_assert(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); -#endif + assert(mem->wire_count > 0); + assert(!mem->gobbled); + assert(m_object != VM_OBJECT_NULL); + vm_object_lock_assert_exclusive(m_object); + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); if (--mem->wire_count == 0) { - assert(!mem->private && !mem->fictitious); - vm_page_wire_count--; - assert(mem->object->wired_page_count > 0); - mem->object->wired_page_count--; - assert(mem->object->resident_page_count >= - mem->object->wired_page_count); - if (mem->object->purgable == VM_PURGABLE_VOLATILE) { + + mem->vm_page_q_state = VM_PAGE_NOT_ON_Q; + + VM_OBJECT_WIRED_PAGE_UPDATE_START(m_object); + VM_OBJECT_WIRED_PAGE_REMOVE(m_object, mem); + VM_OBJECT_WIRED_PAGE_UPDATE_END(m_object, m_object->wire_tag); + if (!mem->private && !mem->fictitious) { + vm_page_wire_count--; + } + + assert(m_object->resident_page_count >= + m_object->wired_page_count); + if (m_object->purgable == VM_PURGABLE_VOLATILE) { OSAddAtomic(+1, &vm_page_purgeable_count); assert(vm_page_purgeable_wired_count > 0); OSAddAtomic(-1, &vm_page_purgeable_wired_count); } - assert(!mem->laundry); - assert(mem->object != kernel_object); - assert(mem->pageq.next == NULL && mem->pageq.prev == NULL); + if ((m_object->purgable == VM_PURGABLE_VOLATILE || + m_object->purgable == VM_PURGABLE_EMPTY) && + m_object->vo_purgeable_owner != TASK_NULL) { + task_t owner; + + owner = m_object->vo_purgeable_owner; + /* more volatile bytes */ + ledger_credit(owner->ledger, + task_ledgers.purgeable_volatile, + PAGE_SIZE); + /* less not-quite-volatile bytes */ + ledger_debit(owner->ledger, + task_ledgers.purgeable_nonvolatile, + PAGE_SIZE); + /* less footprint */ + ledger_debit(owner->ledger, + task_ledgers.phys_footprint, + PAGE_SIZE); + } + assert(m_object != kernel_object); + assert(mem->pageq.next == 0 && mem->pageq.prev == 0); if (queueit == TRUE) { - if (mem->object->purgable == VM_PURGABLE_EMPTY) { + if (m_object->purgable == VM_PURGABLE_EMPTY) { vm_page_deactivate(mem); } else { vm_page_activate(mem); @@ -2709,15 +4025,16 @@ vm_page_deactivate_internal( vm_page_t m, boolean_t clear_hw_reference) { + vm_object_t m_object; + + m_object = VM_PAGE_OBJECT(m); VM_PAGE_CHECK(m); - assert(m->object != kernel_object); - assert(m->phys_page != vm_page_guard_addr); + assert(m_object != kernel_object); + assert(VM_PAGE_GET_PHYS_PAGE(m) != vm_page_guard_addr); -// dbgLog(m->phys_page, vm_page_free_count, vm_page_wire_count, 6); /* (TEST/DEBUG) */ -#if DEBUG - lck_mtx_assert(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); -#endif +// dbgLog(VM_PAGE_GET_PHYS_PAGE(m), vm_page_free_count, vm_page_wire_count, 6); /* (TEST/DEBUG) */ + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); /* * This page is no longer very interesting. If it was * interesting (active or inactive/referenced), then we @@ -2737,40 +4054,44 @@ vm_page_deactivate_internal( } /* * if this page is currently on the pageout queue, we can't do the - * VM_PAGE_QUEUES_REMOVE (which doesn't handle the pageout queue case) + * vm_page_queues_remove (which doesn't handle the pageout queue case) * and we can't remove it manually since we would need the object lock * (which is not required here) to decrement the activity_in_progress * reference which is held on the object while the page is in the pageout queue... * just let the normal laundry processing proceed */ - if (m->pageout_queue || m->private || m->fictitious || (VM_PAGE_WIRED(m))) - return; - + if (m->laundry || m->private || m->fictitious || + (m->vm_page_q_state == VM_PAGE_USED_BY_COMPRESSOR) || + (m->vm_page_q_state == VM_PAGE_ON_PAGEOUT_Q) || + VM_PAGE_WIRED(m)) { + return; + } if (!m->absent && clear_hw_reference == TRUE) - pmap_clear_reference(m->phys_page); + pmap_clear_reference(VM_PAGE_GET_PHYS_PAGE(m)); m->reference = FALSE; m->no_cache = FALSE; - if (!m->inactive) { - VM_PAGE_QUEUES_REMOVE(m); - - if (!VM_DYNAMIC_PAGING_ENABLED(memory_manager_default) && - m->dirty && m->object->internal && - (m->object->purgable == VM_PURGABLE_DENY || - m->object->purgable == VM_PURGABLE_NONVOLATILE || - m->object->purgable == VM_PURGABLE_VOLATILE)) { - queue_enter(&vm_page_queue_throttled, m, vm_page_t, pageq); - m->throttled = TRUE; + if ( !VM_PAGE_INACTIVE(m)) { + vm_page_queues_remove(m, FALSE); + + if (!VM_DYNAMIC_PAGING_ENABLED() && + m->dirty && m_object->internal && + (m_object->purgable == VM_PURGABLE_DENY || + m_object->purgable == VM_PURGABLE_NONVOLATILE || + m_object->purgable == VM_PURGABLE_VOLATILE)) { + vm_page_check_pageable_safe(m); + vm_page_queue_enter(&vm_page_queue_throttled, m, vm_page_t, pageq); + m->vm_page_q_state = VM_PAGE_ON_THROTTLED_Q; vm_page_throttled_count++; } else { - if (m->object->named && m->object->ref_count == 1) { + if (m_object->named && m_object->ref_count == 1) { vm_page_speculate(m, FALSE); #if DEVELOPMENT || DEBUG vm_page_speculative_recreated++; #endif } else { - VM_PAGE_ENQUEUE_INACTIVE(m, FALSE); + vm_page_enqueue_inactive(m, FALSE); } } } @@ -2788,14 +4109,19 @@ vm_page_deactivate_internal( void vm_page_enqueue_cleaned(vm_page_t m) { - assert(m->phys_page != vm_page_guard_addr); -#if DEBUG - lck_mtx_assert(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); -#endif + vm_object_t m_object; + + m_object = VM_PAGE_OBJECT(m); + + assert(VM_PAGE_GET_PHYS_PAGE(m) != vm_page_guard_addr); + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); assert( !(m->absent && !m->unusual)); + if (VM_PAGE_WIRED(m)) { + return; + } + if (m->gobbled) { - assert( !VM_PAGE_WIRED(m)); if (!m->private && !m->fictitious) vm_page_wire_count--; vm_page_gobble_count--; @@ -2803,24 +4129,34 @@ void vm_page_enqueue_cleaned(vm_page_t m) } /* * if this page is currently on the pageout queue, we can't do the - * VM_PAGE_QUEUES_REMOVE (which doesn't handle the pageout queue case) + * vm_page_queues_remove (which doesn't handle the pageout queue case) * and we can't remove it manually since we would need the object lock * (which is not required here) to decrement the activity_in_progress * reference which is held on the object while the page is in the pageout queue... * just let the normal laundry processing proceed */ - if (m->clean_queue || m->pageout_queue || m->private || m->fictitious) - return; - - VM_PAGE_QUEUES_REMOVE(m); + if (m->laundry || m->private || m->fictitious || + (m->vm_page_q_state == VM_PAGE_ON_INACTIVE_CLEANED_Q) || + (m->vm_page_q_state == VM_PAGE_ON_PAGEOUT_Q)) { + return; + } + vm_page_queues_remove(m, FALSE); - queue_enter(&vm_page_queue_cleaned, m, vm_page_t, pageq); - m->clean_queue = TRUE; + vm_page_check_pageable_safe(m); + vm_page_queue_enter(&vm_page_queue_cleaned, m, vm_page_t, pageq); + m->vm_page_q_state = VM_PAGE_ON_INACTIVE_CLEANED_Q; vm_page_cleaned_count++; - m->inactive = TRUE; vm_page_inactive_count++; - + if (m_object->internal) { + vm_page_pageable_internal_count++; + } else { + vm_page_pageable_external_count++; + } +#if CONFIG_BACKGROUND_QUEUE + if (m->vm_page_in_background) + vm_page_add_to_backgroundq(m, TRUE); +#endif vm_pageout_enqueued_cleaned++; } @@ -2834,16 +4170,18 @@ void vm_page_enqueue_cleaned(vm_page_t m) void vm_page_activate( - register vm_page_t m) + vm_page_t m) { + vm_object_t m_object; + + m_object = VM_PAGE_OBJECT(m); + VM_PAGE_CHECK(m); #ifdef FIXME_4778297 - assert(m->object != kernel_object); -#endif - assert(m->phys_page != vm_page_guard_addr); -#if DEBUG - lck_mtx_assert(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); + assert(m_object != kernel_object); #endif + assert(VM_PAGE_GET_PHYS_PAGE(m) != vm_page_guard_addr); + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); assert( !(m->absent && !m->unusual)); if (m->gobbled) { @@ -2855,41 +4193,55 @@ vm_page_activate( } /* * if this page is currently on the pageout queue, we can't do the - * VM_PAGE_QUEUES_REMOVE (which doesn't handle the pageout queue case) + * vm_page_queues_remove (which doesn't handle the pageout queue case) * and we can't remove it manually since we would need the object lock * (which is not required here) to decrement the activity_in_progress * reference which is held on the object while the page is in the pageout queue... * just let the normal laundry processing proceed */ - if (m->pageout_queue || m->private || m->fictitious) + if (m->laundry || m->private || m->fictitious || + (m->vm_page_q_state == VM_PAGE_USED_BY_COMPRESSOR) || + (m->vm_page_q_state == VM_PAGE_ON_PAGEOUT_Q)) return; #if DEBUG - if (m->active) + if (m->vm_page_q_state == VM_PAGE_ON_ACTIVE_Q) panic("vm_page_activate: already active"); #endif - if (m->speculative) { + if (m->vm_page_q_state == VM_PAGE_ON_SPECULATIVE_Q) { DTRACE_VM2(pgrec, int, 1, (uint64_t *), NULL); DTRACE_VM2(pgfrec, int, 1, (uint64_t *), NULL); } - VM_PAGE_QUEUES_REMOVE(m); + vm_page_queues_remove(m, FALSE); if ( !VM_PAGE_WIRED(m)) { - - if (!VM_DYNAMIC_PAGING_ENABLED(memory_manager_default) && - m->dirty && m->object->internal && - (m->object->purgable == VM_PURGABLE_DENY || - m->object->purgable == VM_PURGABLE_NONVOLATILE || - m->object->purgable == VM_PURGABLE_VOLATILE)) { - queue_enter(&vm_page_queue_throttled, m, vm_page_t, pageq); - m->throttled = TRUE; + vm_page_check_pageable_safe(m); + if (!VM_DYNAMIC_PAGING_ENABLED() && + m->dirty && m_object->internal && + (m_object->purgable == VM_PURGABLE_DENY || + m_object->purgable == VM_PURGABLE_NONVOLATILE || + m_object->purgable == VM_PURGABLE_VOLATILE)) { + vm_page_queue_enter(&vm_page_queue_throttled, m, vm_page_t, pageq); + m->vm_page_q_state = VM_PAGE_ON_THROTTLED_Q; vm_page_throttled_count++; } else { - queue_enter(&vm_page_queue_active, m, vm_page_t, pageq); - m->active = TRUE; - vm_page_active_count++; +#if CONFIG_SECLUDED_MEMORY + if (secluded_for_filecache && + vm_page_secluded_target != 0 && + num_tasks_can_use_secluded_mem == 0 && + m_object->eligible_for_secluded) { + vm_page_queue_enter(&vm_page_queue_secluded, m, + vm_page_t, pageq); + m->vm_page_q_state = VM_PAGE_ON_SECLUDED_Q; + vm_page_secluded_count++; + vm_page_secluded_count_inuse++; + assert(!m_object->internal); +// vm_page_pageable_external_count++; + } else +#endif /* CONFIG_SECLUDED_MEMORY */ + vm_page_enqueue_active(m, FALSE); } m->reference = TRUE; m->no_cache = FALSE; @@ -2911,27 +4263,32 @@ vm_page_speculate( boolean_t new) { struct vm_speculative_age_q *aq; + vm_object_t m_object; + + m_object = VM_PAGE_OBJECT(m); VM_PAGE_CHECK(m); - assert(m->object != kernel_object); - assert(m->phys_page != vm_page_guard_addr); -#if DEBUG - lck_mtx_assert(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); -#endif + vm_page_check_pageable_safe(m); + + assert(VM_PAGE_GET_PHYS_PAGE(m) != vm_page_guard_addr); + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); assert( !(m->absent && !m->unusual)); + assert(m_object->internal == FALSE); /* * if this page is currently on the pageout queue, we can't do the - * VM_PAGE_QUEUES_REMOVE (which doesn't handle the pageout queue case) + * vm_page_queues_remove (which doesn't handle the pageout queue case) * and we can't remove it manually since we would need the object lock * (which is not required here) to decrement the activity_in_progress * reference which is held on the object while the page is in the pageout queue... * just let the normal laundry processing proceed */ - if (m->pageout_queue || m->private || m->fictitious) + if (m->laundry || m->private || m->fictitious || + (m->vm_page_q_state == VM_PAGE_USED_BY_COMPRESSOR) || + (m->vm_page_q_state == VM_PAGE_ON_PAGEOUT_Q)) return; - VM_PAGE_QUEUES_REMOVE(m); + vm_page_queues_remove(m, FALSE); if ( !VM_PAGE_WIRED(m)) { mach_timespec_t ts; @@ -2973,7 +4330,7 @@ vm_page_speculate( } aq = &vm_page_queue_speculative[speculative_age_index]; - if (!queue_empty(&aq->age_q)) + if (!vm_page_queue_empty(&aq->age_q)) vm_page_speculate_ageit(aq); aq->age_ts.tv_sec = vm_page_speculative_q_age_ms / 1000; @@ -2982,14 +4339,15 @@ vm_page_speculate( ADD_MACH_TIMESPEC(&aq->age_ts, &ts); } } - enqueue_tail(&aq->age_q, &m->pageq); - m->speculative = TRUE; + vm_page_enqueue_tail(&aq->age_q, &m->pageq); + m->vm_page_q_state = VM_PAGE_ON_SPECULATIVE_Q; vm_page_speculative_count++; + vm_page_pageable_external_count++; if (new == TRUE) { - vm_object_lock_assert_exclusive(m->object); + vm_object_lock_assert_exclusive(m_object); - m->object->pages_created++; + m_object->pages_created++; #if DEVELOPMENT || DEBUG vm_page_speculative_created++; #endif @@ -3013,28 +4371,28 @@ vm_page_speculate_ageit(struct vm_speculative_age_q *aq) sq = &vm_page_queue_speculative[VM_PAGE_SPECULATIVE_AGED_Q]; - if (queue_empty(&sq->age_q)) { + if (vm_page_queue_empty(&sq->age_q)) { sq->age_q.next = aq->age_q.next; sq->age_q.prev = aq->age_q.prev; - t = (vm_page_t)sq->age_q.next; - t->pageq.prev = &sq->age_q; + t = (vm_page_t)VM_PAGE_UNPACK_PTR(sq->age_q.next); + t->pageq.prev = VM_PAGE_PACK_PTR(&sq->age_q); - t = (vm_page_t)sq->age_q.prev; - t->pageq.next = &sq->age_q; + t = (vm_page_t)VM_PAGE_UNPACK_PTR(sq->age_q.prev); + t->pageq.next = VM_PAGE_PACK_PTR(&sq->age_q); } else { - t = (vm_page_t)sq->age_q.prev; + t = (vm_page_t)VM_PAGE_UNPACK_PTR(sq->age_q.prev); t->pageq.next = aq->age_q.next; - t = (vm_page_t)aq->age_q.next; + t = (vm_page_t)VM_PAGE_UNPACK_PTR(aq->age_q.next); t->pageq.prev = sq->age_q.prev; - t = (vm_page_t)aq->age_q.prev; - t->pageq.next = &sq->age_q; + t = (vm_page_t)VM_PAGE_UNPACK_PTR(aq->age_q.prev); + t->pageq.next = VM_PAGE_PACK_PTR(&sq->age_q); sq->age_q.prev = aq->age_q.prev; } - queue_init(&aq->age_q); + vm_page_queue_init(&aq->age_q); } @@ -3043,28 +4401,29 @@ vm_page_lru( vm_page_t m) { VM_PAGE_CHECK(m); - assert(m->object != kernel_object); - assert(m->phys_page != vm_page_guard_addr); + assert(VM_PAGE_OBJECT(m) != kernel_object); + assert(VM_PAGE_GET_PHYS_PAGE(m) != vm_page_guard_addr); -#if DEBUG - lck_mtx_assert(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); -#endif + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); /* * if this page is currently on the pageout queue, we can't do the - * VM_PAGE_QUEUES_REMOVE (which doesn't handle the pageout queue case) + * vm_page_queues_remove (which doesn't handle the pageout queue case) * and we can't remove it manually since we would need the object lock * (which is not required here) to decrement the activity_in_progress * reference which is held on the object while the page is in the pageout queue... * just let the normal laundry processing proceed */ - if (m->pageout_queue || m->private || (VM_PAGE_WIRED(m))) + if (m->laundry || m->private || + (m->vm_page_q_state == VM_PAGE_USED_BY_COMPRESSOR) || + (m->vm_page_q_state == VM_PAGE_ON_PAGEOUT_Q) || + VM_PAGE_WIRED(m)) return; m->no_cache = FALSE; - VM_PAGE_QUEUES_REMOVE(m); + vm_page_queues_remove(m, FALSE); - VM_PAGE_ENQUEUE_INACTIVE(m, FALSE); + vm_page_enqueue_inactive(m, FALSE); } @@ -3075,29 +4434,39 @@ vm_page_reactivate_all_throttled(void) vm_page_t first_active; vm_page_t m; int extra_active_count; + int extra_internal_count, extra_external_count; + vm_object_t m_object; - if (!VM_DYNAMIC_PAGING_ENABLED(memory_manager_default)) + if (!VM_DYNAMIC_PAGING_ENABLED()) return; extra_active_count = 0; + extra_internal_count = 0; + extra_external_count = 0; vm_page_lock_queues(); - if (! queue_empty(&vm_page_queue_throttled)) { + if (! vm_page_queue_empty(&vm_page_queue_throttled)) { /* * Switch "throttled" pages to "active". */ - queue_iterate(&vm_page_queue_throttled, m, vm_page_t, pageq) { + vm_page_queue_iterate(&vm_page_queue_throttled, m, vm_page_t, pageq) { VM_PAGE_CHECK(m); - assert(m->throttled); - assert(!m->active); - assert(!m->inactive); - assert(!m->speculative); - assert(!VM_PAGE_WIRED(m)); + assert(m->vm_page_q_state == VM_PAGE_ON_THROTTLED_Q); + + m_object = VM_PAGE_OBJECT(m); extra_active_count++; + if (m_object->internal) { + extra_internal_count++; + } else { + extra_external_count++; + } - m->throttled = FALSE; - m->active = TRUE; + m->vm_page_q_state = VM_PAGE_ON_ACTIVE_Q; VM_PAGE_CHECK(m); +#if CONFIG_BACKGROUND_QUEUE + if (m->vm_page_in_background) + vm_page_add_to_backgroundq(m, FALSE); +#endif } /* @@ -3106,30 +4475,32 @@ vm_page_reactivate_all_throttled(void) * get re-evaluated by the LRU algorithm first, since they've been * completely out of it until now. */ - first_throttled = (vm_page_t) queue_first(&vm_page_queue_throttled); - last_throttled = (vm_page_t) queue_last(&vm_page_queue_throttled); - first_active = (vm_page_t) queue_first(&vm_page_queue_active); - if (queue_empty(&vm_page_queue_active)) { - queue_last(&vm_page_queue_active) = (queue_entry_t) last_throttled; + first_throttled = (vm_page_t) vm_page_queue_first(&vm_page_queue_throttled); + last_throttled = (vm_page_t) vm_page_queue_last(&vm_page_queue_throttled); + first_active = (vm_page_t) vm_page_queue_first(&vm_page_queue_active); + if (vm_page_queue_empty(&vm_page_queue_active)) { + vm_page_queue_active.prev = VM_PAGE_CONVERT_TO_QUEUE_ENTRY(last_throttled); } else { - queue_prev(&first_active->pageq) = (queue_entry_t) last_throttled; + first_active->pageq.prev = VM_PAGE_CONVERT_TO_QUEUE_ENTRY(last_throttled); } - queue_first(&vm_page_queue_active) = (queue_entry_t) first_throttled; - queue_prev(&first_throttled->pageq) = (queue_entry_t) &vm_page_queue_active; - queue_next(&last_throttled->pageq) = (queue_entry_t) first_active; + vm_page_queue_active.next = VM_PAGE_CONVERT_TO_QUEUE_ENTRY(first_throttled); + first_throttled->pageq.prev = VM_PAGE_CONVERT_TO_QUEUE_ENTRY(&vm_page_queue_active); + last_throttled->pageq.next = VM_PAGE_CONVERT_TO_QUEUE_ENTRY(first_active); #if DEBUG printf("reactivated %d throttled pages\n", vm_page_throttled_count); #endif - queue_init(&vm_page_queue_throttled); + vm_page_queue_init(&vm_page_queue_throttled); /* * Adjust the global page counts. */ vm_page_active_count += extra_active_count; + vm_page_pageable_internal_count += extra_internal_count; + vm_page_pageable_external_count += extra_external_count; vm_page_throttled_count = 0; } assert(vm_page_throttled_count == 0); - assert(queue_empty(&vm_page_queue_throttled)); + assert(vm_page_queue_empty(&vm_page_queue_throttled)); vm_page_unlock_queues(); } @@ -3168,26 +4539,24 @@ vm_page_reactivate_local(uint32_t lid, boolean_t force, boolean_t nolocks) /* * Switch "local" pages to "active". */ - assert(!queue_empty(&lq->vpl_queue)); + assert(!vm_page_queue_empty(&lq->vpl_queue)); - queue_iterate(&lq->vpl_queue, m, vm_page_t, pageq) { + vm_page_queue_iterate(&lq->vpl_queue, m, vm_page_t, pageq) { VM_PAGE_CHECK(m); - assert(m->local); - assert(!m->active); - assert(!m->inactive); - assert(!m->speculative); - assert(!VM_PAGE_WIRED(m)); - assert(!m->throttled); + vm_page_check_pageable_safe(m); + assert(m->vm_page_q_state == VM_PAGE_ON_ACTIVE_LOCAL_Q); assert(!m->fictitious); if (m->local_id != lid) panic("vm_page_reactivate_local: found vm_page_t(%p) with wrong cpuid", m); m->local_id = 0; - m->local = FALSE; - m->active = TRUE; + m->vm_page_q_state = VM_PAGE_ON_ACTIVE_Q; VM_PAGE_CHECK(m); - +#if CONFIG_BACKGROUND_QUEUE + if (m->vm_page_in_background) + vm_page_add_to_backgroundq(m, FALSE); +#endif count++; } if (count != lq->vpl_count) @@ -3196,27 +4565,31 @@ vm_page_reactivate_local(uint32_t lid, boolean_t force, boolean_t nolocks) /* * Transfer the entire local queue to a regular LRU page queues. */ - first_local = (vm_page_t) queue_first(&lq->vpl_queue); - last_local = (vm_page_t) queue_last(&lq->vpl_queue); - first_active = (vm_page_t) queue_first(&vm_page_queue_active); + first_local = (vm_page_t) vm_page_queue_first(&lq->vpl_queue); + last_local = (vm_page_t) vm_page_queue_last(&lq->vpl_queue); + first_active = (vm_page_t) vm_page_queue_first(&vm_page_queue_active); - if (queue_empty(&vm_page_queue_active)) { - queue_last(&vm_page_queue_active) = (queue_entry_t) last_local; + if (vm_page_queue_empty(&vm_page_queue_active)) { + vm_page_queue_active.prev = VM_PAGE_CONVERT_TO_QUEUE_ENTRY(last_local); } else { - queue_prev(&first_active->pageq) = (queue_entry_t) last_local; + first_active->pageq.prev = VM_PAGE_CONVERT_TO_QUEUE_ENTRY(last_local); } - queue_first(&vm_page_queue_active) = (queue_entry_t) first_local; - queue_prev(&first_local->pageq) = (queue_entry_t) &vm_page_queue_active; - queue_next(&last_local->pageq) = (queue_entry_t) first_active; + vm_page_queue_active.next = VM_PAGE_CONVERT_TO_QUEUE_ENTRY(first_local); + first_local->pageq.prev = VM_PAGE_CONVERT_TO_QUEUE_ENTRY(&vm_page_queue_active); + last_local->pageq.next = VM_PAGE_CONVERT_TO_QUEUE_ENTRY(first_active); - queue_init(&lq->vpl_queue); + vm_page_queue_init(&lq->vpl_queue); /* * Adjust the global page counts. */ vm_page_active_count += lq->vpl_count; + vm_page_pageable_internal_count += lq->vpl_internal_count; + vm_page_pageable_external_count += lq->vpl_external_count; lq->vpl_count = 0; + lq->vpl_internal_count = 0; + lq->vpl_external_count = 0; } - assert(queue_empty(&lq->vpl_queue)); + assert(vm_page_queue_empty(&lq->vpl_queue)); if (nolocks == FALSE) { VPL_UNLOCK(&lq->vpl_lock); @@ -3229,13 +4602,13 @@ vm_page_reactivate_local(uint32_t lid, boolean_t force, boolean_t nolocks) * * Zero-fill a part of the page. */ +#define PMAP_ZERO_PART_PAGE_IMPLEMENTED void vm_page_part_zero_fill( vm_page_t m, vm_offset_t m_pa, vm_size_t len) { - vm_page_t tmp; #if 0 /* @@ -3246,8 +4619,9 @@ vm_page_part_zero_fill( #endif #ifdef PMAP_ZERO_PART_PAGE_IMPLEMENTED - pmap_zero_part_page(m->phys_page, m_pa, len); + pmap_zero_part_page(VM_PAGE_GET_PHYS_PAGE(m), m_pa, len); #else + vm_page_t tmp; while (1) { tmp = vm_page_grab(); if (tmp == VM_PAGE_NULL) { @@ -3280,8 +4654,8 @@ vm_page_zero_fill( vm_page_t m) { XPR(XPR_VM_PAGE, - "vm_page_zero_fill, object 0x%X offset 0x%X page 0x%X\n", - m->object, m->offset, m, 0,0); + "vm_page_zero_fill, object 0x%X offset 0x%X page 0x%X\n", + VM_PAGE_OBJECT(m), m->offset, m, 0,0); #if 0 /* * we don't hold the page queue lock @@ -3290,8 +4664,8 @@ vm_page_zero_fill( VM_PAGE_CHECK(m); #endif -// dbgTrace(0xAEAEAEAE, m->phys_page, 0); /* (BRINGUP) */ - pmap_zero_page(m->phys_page); +// dbgTrace(0xAEAEAEAE, VM_PAGE_GET_PHYS_PAGE(m), 0); /* (BRINGUP) */ + pmap_zero_page(VM_PAGE_GET_PHYS_PAGE(m)); } /* @@ -3316,18 +4690,14 @@ vm_page_part_copy( VM_PAGE_CHECK(src_m); VM_PAGE_CHECK(dst_m); #endif - pmap_copy_part_page(src_m->phys_page, src_pa, - dst_m->phys_page, dst_pa, len); + pmap_copy_part_page(VM_PAGE_GET_PHYS_PAGE(src_m), src_pa, + VM_PAGE_GET_PHYS_PAGE(dst_m), dst_pa, len); } /* * vm_page_copy: * * Copy one page to another - * - * ENCRYPTED SWAP: - * The source page should not be encrypted. The caller should - * make sure the page is decrypted first, if necessary. */ int vm_page_copy_cs_validations = 0; @@ -3338,11 +4708,15 @@ vm_page_copy( vm_page_t src_m, vm_page_t dest_m) { + vm_object_t src_m_object; + + src_m_object = VM_PAGE_OBJECT(src_m); + XPR(XPR_VM_PAGE, - "vm_page_copy, object 0x%X offset 0x%X to object 0x%X offset 0x%X\n", - src_m->object, src_m->offset, - dest_m->object, dest_m->offset, - 0); + "vm_page_copy, object 0x%X offset 0x%X to object 0x%X offset 0x%X\n", + src_m_object, src_m->offset, + VM_PAGE_OBJECT(dest_m), dest_m->offset, + 0); #if 0 /* * we don't hold the page queue lock @@ -3351,21 +4725,10 @@ vm_page_copy( VM_PAGE_CHECK(src_m); VM_PAGE_CHECK(dest_m); #endif - vm_object_lock_assert_held(src_m->object); - - /* - * ENCRYPTED SWAP: - * The source page should not be encrypted at this point. - * The destination page will therefore not contain encrypted - * data after the copy. - */ - if (src_m->encrypted) { - panic("vm_page_copy: source page %p is encrypted\n", src_m); - } - dest_m->encrypted = FALSE; + vm_object_lock_assert_held(src_m_object); - if (src_m->object != VM_OBJECT_NULL && - src_m->object->code_signed) { + if (src_m_object != VM_OBJECT_NULL && + src_m_object->code_signed) { /* * We're copying a page from a code-signed object. * Whoever ends up mapping the copy page might care about @@ -3374,6 +4737,14 @@ vm_page_copy( */ vm_page_copy_cs_validations++; vm_page_validate_cs(src_m); +#if DEVELOPMENT || DEBUG + DTRACE_VM4(codesigned_copy, + vm_object_t, src_m_object, + vm_object_offset_t, src_m->offset, + int, src_m->cs_validated, + int, src_m->cs_tainted); +#endif /* DEVELOPMENT || DEBUG */ + } if (vm_page_is_slideable(src_m)) { @@ -3396,7 +4767,7 @@ vm_page_copy( } dest_m->slid = src_m->slid; dest_m->error = src_m->error; /* sliding src_m might have failed... */ - pmap_copy_page(src_m->phys_page, dest_m->phys_page); + pmap_copy_page(VM_PAGE_GET_PHYS_PAGE(src_m), VM_PAGE_GET_PHYS_PAGE(dest_m)); } #if MACH_ASSERT @@ -3405,52 +4776,48 @@ _vm_page_print( vm_page_t p) { printf("vm_page %p: \n", p); - printf(" pageq: next=%p prev=%p\n", p->pageq.next, p->pageq.prev); - printf(" listq: next=%p prev=%p\n", p->listq.next, p->listq.prev); - printf(" next=%p\n", p->next); - printf(" object=%p offset=0x%llx\n", p->object, p->offset); + printf(" pageq: next=%p prev=%p\n", + (vm_page_t)VM_PAGE_UNPACK_PTR(p->pageq.next), + (vm_page_t)VM_PAGE_UNPACK_PTR(p->pageq.prev)); + printf(" listq: next=%p prev=%p\n", + (vm_page_t)(VM_PAGE_UNPACK_PTR(p->listq.next)), + (vm_page_t)(VM_PAGE_UNPACK_PTR(p->listq.prev))); + printf(" next=%p\n", (vm_page_t)(VM_PAGE_UNPACK_PTR(p->next_m))); + printf(" object=%p offset=0x%llx\n",VM_PAGE_OBJECT(p), p->offset); printf(" wire_count=%u\n", p->wire_count); + printf(" q_state=%u\n", p->vm_page_q_state); - printf(" %slocal, %sinactive, %sactive, %spageout_queue, %sspeculative, %slaundry\n", - (p->local ? "" : "!"), - (p->inactive ? "" : "!"), - (p->active ? "" : "!"), - (p->pageout_queue ? "" : "!"), - (p->speculative ? "" : "!"), - (p->laundry ? "" : "!")); - printf(" %sfree, %sref, %sgobbled, %sprivate, %sthrottled\n", - (p->free ? "" : "!"), + printf(" %slaundry, %sref, %sgobbled, %sprivate\n", + (p->laundry ? "" : "!"), (p->reference ? "" : "!"), (p->gobbled ? "" : "!"), - (p->private ? "" : "!"), - (p->throttled ? "" : "!")); + (p->private ? "" : "!")); printf(" %sbusy, %swanted, %stabled, %sfictitious, %spmapped, %swpmapped\n", - (p->busy ? "" : "!"), - (p->wanted ? "" : "!"), - (p->tabled ? "" : "!"), - (p->fictitious ? "" : "!"), - (p->pmapped ? "" : "!"), - (p->wpmapped ? "" : "!")); - printf(" %spageout, %sabsent, %serror, %sdirty, %scleaning, %sprecious, %sclustered\n", - (p->pageout ? "" : "!"), + (p->busy ? "" : "!"), + (p->wanted ? "" : "!"), + (p->tabled ? "" : "!"), + (p->fictitious ? "" : "!"), + (p->pmapped ? "" : "!"), + (p->wpmapped ? "" : "!")); + printf(" %sfree_when_done, %sabsent, %serror, %sdirty, %scleaning, %sprecious, %sclustered\n", + (p->free_when_done ? "" : "!"), (p->absent ? "" : "!"), (p->error ? "" : "!"), (p->dirty ? "" : "!"), (p->cleaning ? "" : "!"), (p->precious ? "" : "!"), (p->clustered ? "" : "!")); - printf(" %soverwriting, %srestart, %sunusual, %sencrypted, %sencrypted_cleaning\n", + printf(" %soverwriting, %srestart, %sunusual\n", (p->overwriting ? "" : "!"), (p->restart ? "" : "!"), - (p->unusual ? "" : "!"), - (p->encrypted ? "" : "!"), - (p->encrypted_cleaning ? "" : "!")); - printf(" %scs_validated, %scs_tainted, %sno_cache\n", + (p->unusual ? "" : "!")); + printf(" %scs_validated, %scs_tainted, %scs_nx, %sno_cache\n", (p->cs_validated ? "" : "!"), (p->cs_tainted ? "" : "!"), + (p->cs_nx ? "" : "!"), (p->no_cache ? "" : "!")); - printf("phys_page=0x%x\n", p->phys_page); + printf("phys_page=0x%x\n", VM_PAGE_GET_PHYS_PAGE(p)); } /* @@ -3462,20 +4829,20 @@ vm_page_verify_contiguous( vm_page_t pages, unsigned int npages) { - register vm_page_t m; + vm_page_t m; unsigned int page_count; vm_offset_t prev_addr; - prev_addr = pages->phys_page; + prev_addr = VM_PAGE_GET_PHYS_PAGE(pages); page_count = 1; for (m = NEXT_PAGE(pages); m != VM_PAGE_NULL; m = NEXT_PAGE(m)) { - if (m->phys_page != prev_addr + 1) { + if (VM_PAGE_GET_PHYS_PAGE(m) != prev_addr + 1) { printf("m %p prev_addr 0x%lx, current addr 0x%x\n", - m, (long)prev_addr, m->phys_page); + m, (long)prev_addr, VM_PAGE_GET_PHYS_PAGE(m)); printf("pages %p page_count %d npages %d\n", pages, page_count, npages); panic("vm_page_verify_contiguous: not contiguous!"); } - prev_addr = m->phys_page; + prev_addr = VM_PAGE_GET_PHYS_PAGE(m); ++page_count; } if (page_count != npages) { @@ -3490,9 +4857,10 @@ vm_page_verify_contiguous( /* * Check the free lists for proper length etc. */ +static boolean_t vm_page_verify_this_free_list_enabled = FALSE; static unsigned int vm_page_verify_free_list( - queue_head_t *vm_page_queue, + vm_page_queue_head_t *vm_page_queue, unsigned int color, vm_page_t look_for_page, boolean_t expect_page) @@ -3502,30 +4870,38 @@ vm_page_verify_free_list( vm_page_t prev_m; boolean_t found_page; + if (! vm_page_verify_this_free_list_enabled) + return 0; + found_page = FALSE; npages = 0; - prev_m = (vm_page_t) vm_page_queue; - queue_iterate(vm_page_queue, - m, - vm_page_t, - pageq) { + prev_m = (vm_page_t)((uintptr_t)vm_page_queue); + + vm_page_queue_iterate(vm_page_queue, + m, + vm_page_t, + pageq) { if (m == look_for_page) { found_page = TRUE; } - if ((vm_page_t) m->pageq.prev != prev_m) + if ((vm_page_t)VM_PAGE_UNPACK_PTR(m->pageq.prev) != prev_m) panic("vm_page_verify_free_list(color=%u, npages=%u): page %p corrupted prev ptr %p instead of %p\n", - color, npages, m, m->pageq.prev, prev_m); + color, npages, m, (vm_page_t)VM_PAGE_UNPACK_PTR(m->pageq.prev), prev_m); if ( ! m->busy ) panic("vm_page_verify_free_list(color=%u, npages=%u): page %p not busy\n", color, npages, m); if (color != (unsigned int) -1) { - if ((m->phys_page & vm_color_mask) != color) + if (VM_PAGE_GET_COLOR(m) != color) panic("vm_page_verify_free_list(color=%u, npages=%u): page %p wrong color %u instead of %u\n", - color, npages, m, m->phys_page & vm_color_mask, color); - if ( ! m->free ) - panic("vm_page_verify_free_list(color=%u, npages=%u): page %p not free\n", - color, npages, m); + color, npages, m, VM_PAGE_GET_COLOR(m), color); + if (m->vm_page_q_state != VM_PAGE_ON_FREE_Q) + panic("vm_page_verify_free_list(color=%u, npages=%u): page %p - expecting q_state == VM_PAGE_ON_FREE_Q, found %d\n", + color, npages, m, m->vm_page_q_state); + } else { + if (m->vm_page_q_state != VM_PAGE_ON_FREE_LOCAL_Q) + panic("vm_page_verify_free_list(npages=%u): local page %p - expecting q_state == VM_PAGE_ON_FREE_LOCAL_Q, found %d\n", + npages, m, m->vm_page_q_state); } ++npages; prev_m = m; @@ -3535,14 +4911,14 @@ vm_page_verify_free_list( if (expect_page && !found_page) { printf("vm_page_verify_free_list(color=%u, npages=%u): page %p not found phys=%u\n", - color, npages, look_for_page, look_for_page->phys_page); + color, npages, look_for_page, VM_PAGE_GET_PHYS_PAGE(look_for_page)); _vm_page_print(look_for_page); for (other_color = 0; other_color < vm_colors; other_color++) { if (other_color == color) continue; - vm_page_verify_free_list(&vm_page_queue_free[other_color], + vm_page_verify_free_list(&vm_page_queue_free[other_color].qhead, other_color, look_for_page, FALSE); } if (color == (unsigned int) -1) { @@ -3553,27 +4929,41 @@ vm_page_verify_free_list( } if (!expect_page && found_page) { printf("vm_page_verify_free_list(color=%u, npages=%u): page %p found phys=%u\n", - color, npages, look_for_page, look_for_page->phys_page); + color, npages, look_for_page, VM_PAGE_GET_PHYS_PAGE(look_for_page)); } } return npages; } -static boolean_t vm_page_verify_free_lists_enabled = FALSE; +static boolean_t vm_page_verify_all_free_lists_enabled = FALSE; static void vm_page_verify_free_lists( void ) { unsigned int color, npages, nlopages; + boolean_t toggle = TRUE; - if (! vm_page_verify_free_lists_enabled) + if (! vm_page_verify_all_free_lists_enabled) return; npages = 0; lck_mtx_lock(&vm_page_queue_free_lock); + + if (vm_page_verify_this_free_list_enabled == TRUE) { + /* + * This variable has been set globally for extra checking of + * each free list Q. Since we didn't set it, we don't own it + * and we shouldn't toggle it. + */ + toggle = FALSE; + } + + if (toggle == TRUE) { + vm_page_verify_this_free_list_enabled = TRUE; + } for( color = 0; color < vm_colors; color++ ) { - npages += vm_page_verify_free_list(&vm_page_queue_free[color], + npages += vm_page_verify_free_list(&vm_page_queue_free[color].qhead, color, VM_PAGE_NULL, FALSE); } nlopages = vm_page_verify_free_list(&vm_lopage_queue_free, @@ -3584,33 +4974,57 @@ vm_page_verify_free_lists( void ) "npages %u free_count %d nlopages %u lo_free_count %u", npages, vm_page_free_count, nlopages, vm_lopage_free_count); + if (toggle == TRUE) { + vm_page_verify_this_free_list_enabled = FALSE; + } + lck_mtx_unlock(&vm_page_queue_free_lock); } -void -vm_page_queues_assert( - vm_page_t mem, - int val) +#endif /* MACH_ASSERT */ + + + +#if __arm64__ +/* + * 1 or more clients (currently only SEP) ask for a large contiguous chunk of memory + * after the system has 'aged'. To ensure that other allocation requests don't mess + * with the chances of that request being satisfied, we pre-allocate a single contiguous + * 10MB buffer and hand it out to the first request of >= 4MB. + */ + +kern_return_t cpm_preallocate_early(void); + +vm_page_t cpm_preallocated_pages_list = NULL; +boolean_t preallocated_buffer_available = FALSE; + +#define PREALLOCATED_CONTIG_BUFFER_PAGES_COUNT ((10 * 1024 * 1024) / PAGE_SIZE_64) /* 10 MB */ +#define MIN_CONTIG_PAGES_REQUEST_FOR_PREALLOCATED_BUFFER ((4 * 1024 *1024) / PAGE_SIZE_64) /* 4 MB */ + +kern_return_t +cpm_preallocate_early(void) { -#if DEBUG - lck_mtx_assert(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); -#endif - if (mem->free + mem->active + mem->inactive + mem->speculative + - mem->throttled + mem->pageout_queue > (val)) { - _vm_page_print(mem); - panic("vm_page_queues_assert(%p, %d)\n", mem, val); - } - if (VM_PAGE_WIRED(mem)) { - assert(!mem->active); - assert(!mem->inactive); - assert(!mem->speculative); - assert(!mem->throttled); - assert(!mem->pageout_queue); + + kern_return_t kr = KERN_SUCCESS; + vm_map_size_t prealloc_size = (PREALLOCATED_CONTIG_BUFFER_PAGES_COUNT * PAGE_SIZE_64); + + printf("cpm_preallocate_early called to preallocate contiguous buffer of %llu pages\n", PREALLOCATED_CONTIG_BUFFER_PAGES_COUNT); + + kr = cpm_allocate(CAST_DOWN(vm_size_t, prealloc_size), &cpm_preallocated_pages_list, 0, 0, TRUE, 0); + + if (kr != KERN_SUCCESS) { + printf("cpm_allocate for preallocated contig buffer failed with %d.\n", kr); + } else { + preallocated_buffer_available = TRUE; } + + return kr; } -#endif /* MACH_ASSERT */ +#endif /* __arm64__ */ +extern boolean_t (* volatile consider_buffer_cache_collect)(int); + /* * CONTIGUOUS PAGE ALLOCATION * @@ -3686,34 +5100,93 @@ vm_page_find_contiguous( int flags) { vm_page_t m = NULL; - ppnum_t prevcontaddr; - ppnum_t start_pnum; - unsigned int npages, considered, scanned; - unsigned int page_idx, start_idx, last_idx, orig_last_idx; + ppnum_t prevcontaddr = 0; + ppnum_t start_pnum = 0; + unsigned int npages = 0, considered = 0, scanned = 0; + unsigned int page_idx = 0, start_idx = 0, last_idx = 0, orig_last_idx = 0; unsigned int idx_last_contig_page_found = 0; - int free_considered, free_available; - int substitute_needed; - boolean_t wrapped; + int free_considered = 0, free_available = 0; + int substitute_needed = 0; + boolean_t wrapped, zone_gc_called = FALSE; + kern_return_t kr; #if DEBUG - clock_sec_t tv_start_sec, tv_end_sec; - clock_usec_t tv_start_usec, tv_end_usec; + clock_sec_t tv_start_sec = 0, tv_end_sec = 0; + clock_usec_t tv_start_usec = 0, tv_end_usec = 0; #endif -#if MACH_ASSERT + int yielded = 0; int dumped_run = 0; int stolen_pages = 0; -#endif + int compressed_pages = 0; + if (contig_pages == 0) return VM_PAGE_NULL; +full_scan_again: + #if MACH_ASSERT vm_page_verify_free_lists(); #endif #if DEBUG clock_get_system_microtime(&tv_start_sec, &tv_start_usec); #endif + PAGE_REPLACEMENT_ALLOWED(TRUE); + vm_page_lock_queues(); + +#if __arm64__ + if (preallocated_buffer_available) { + + if ((contig_pages >= MIN_CONTIG_PAGES_REQUEST_FOR_PREALLOCATED_BUFFER) && (contig_pages <= PREALLOCATED_CONTIG_BUFFER_PAGES_COUNT)) { + + m = cpm_preallocated_pages_list; + + start_idx = (unsigned int) (m - &vm_pages[0]); + + if (wire == FALSE) { + + last_idx = start_idx; + + for(npages = 0; npages < contig_pages; npages++, last_idx++) { + + assert(vm_pages[last_idx].gobbled == FALSE); + + vm_pages[last_idx].gobbled = TRUE; + vm_page_gobble_count++; + + assert(1 == vm_pages[last_idx].wire_count); + /* + * Gobbled pages are counted as wired pages. So no need to drop + * the global wired page count. Just the page's wire count is fine. + */ + vm_pages[last_idx].wire_count--; + vm_pages[last_idx].vm_page_q_state = VM_PAGE_NOT_ON_Q; + } + + } + + last_idx = start_idx + contig_pages - 1; + + vm_pages[last_idx].snext = NULL; + + printf("Using preallocated buffer: Requested size (pages):%d... index range: %d-%d...freeing %llu pages\n", contig_pages, start_idx, last_idx, PREALLOCATED_CONTIG_BUFFER_PAGES_COUNT - contig_pages); + + last_idx += 1; + for(npages = contig_pages; npages < PREALLOCATED_CONTIG_BUFFER_PAGES_COUNT; npages++, last_idx++) { + + VM_PAGE_ZERO_PAGEQ_ENTRY(&vm_pages[last_idx]); + vm_page_free(&vm_pages[last_idx]); + } + + cpm_preallocated_pages_list = NULL; + preallocated_buffer_available = FALSE; + + goto done_scanning; + } + } +#endif /* __arm64__ */ + lck_mtx_lock(&vm_page_queue_free_lock); RESET_STATE_OF_RUN(); @@ -3752,20 +5225,19 @@ retry: assert(!m->fictitious); assert(!m->private); - if (max_pnum && m->phys_page > max_pnum) { + if (max_pnum && VM_PAGE_GET_PHYS_PAGE(m) > max_pnum) { /* no more low pages... */ break; } - if (!npages & ((m->phys_page & pnum_mask) != 0)) { + if (!npages & ((VM_PAGE_GET_PHYS_PAGE(m) & pnum_mask) != 0)) { /* * not aligned */ RESET_STATE_OF_RUN(); } else if (VM_PAGE_WIRED(m) || m->gobbled || - m->encrypted || m->encrypted_cleaning || m->cs_validated || m->cs_tainted || - m->error || m->absent || m->pageout_queue || m->laundry || m->wanted || m->precious || - m->cleaning || m->overwriting || m->restart || m->unusual || m->pageout) { + m->laundry || m->wanted || + m->cleaning || m->overwriting || m->free_when_done) { /* * page is in a transient state * or a state we don't want to deal @@ -3774,9 +5246,15 @@ retry: */ RESET_STATE_OF_RUN(); - } else if (!m->free && !m->active && !m->inactive && !m->speculative && !m->throttled) { + } else if ((m->vm_page_q_state == VM_PAGE_NOT_ON_Q) || + (m->vm_page_q_state == VM_PAGE_ON_FREE_LOCAL_Q) || + (m->vm_page_q_state == VM_PAGE_ON_FREE_LOPAGE_Q) || + (m->vm_page_q_state == VM_PAGE_ON_PAGEOUT_Q)) { /* - * page needs to be on one of our queues + * page needs to be on one of our queues (other then the pageout or special free queues) + * or it needs to belong to the compressor pool (which is now indicated + * by vm_page_q_state == VM_PAGE_USED_BY_COMPRESSOR and falls out + * from the check for VM_PAGE_NOT_ON_Q) * in order for it to be stable behind the * locks we hold at this point... * if not, don't consider it which @@ -3784,7 +5262,7 @@ retry: */ RESET_STATE_OF_RUN(); - } else if (!m->free && (!m->tabled || m->busy)) { + } else if ((m->vm_page_q_state != VM_PAGE_ON_FREE_Q) && (!m->tabled || m->busy)) { /* * pages on the free list are always 'busy' * so we couldn't test for 'busy' in the check @@ -3799,22 +5277,22 @@ retry: RESET_STATE_OF_RUN(); } else { - if (m->phys_page != prevcontaddr + 1) { - if ((m->phys_page & pnum_mask) != 0) { + if (VM_PAGE_GET_PHYS_PAGE(m) != prevcontaddr + 1) { + if ((VM_PAGE_GET_PHYS_PAGE(m) & pnum_mask) != 0) { RESET_STATE_OF_RUN(); goto did_consider; } else { npages = 1; start_idx = page_idx; - start_pnum = m->phys_page; + start_pnum = VM_PAGE_GET_PHYS_PAGE(m); } } else { npages++; } - prevcontaddr = m->phys_page; + prevcontaddr = VM_PAGE_GET_PHYS_PAGE(m); VM_PAGE_CHECK(m); - if (m->free) { + if (m->vm_page_q_state == VM_PAGE_ON_FREE_Q) { free_considered++; } else { /* @@ -3827,7 +5305,7 @@ retry: * into a substitute page. */ #if VM_PAGE_FIND_CONTIGUOUS_CAN_STEAL - if (m->pmapped || m->dirty) { + if (m->pmapped || m->dirty || m->precious) { substitute_needed++; } #else @@ -3862,12 +5340,16 @@ retry: } did_consider: if (considered > MAX_CONSIDERED_BEFORE_YIELD && npages <= 1) { - + + PAGE_REPLACEMENT_ALLOWED(FALSE); + lck_mtx_unlock(&vm_page_queue_free_lock); vm_page_unlock_queues(); mutex_pause(0); + PAGE_REPLACEMENT_ALLOWED(TRUE); + vm_page_lock_queues(); lck_mtx_lock(&vm_page_queue_free_lock); @@ -3878,9 +5360,9 @@ did_consider: */ free_available = vm_page_free_count - vm_page_free_reserved; considered = 0; -#if MACH_ASSERT + yielded++; -#endif + goto retry; } considered++; @@ -3931,42 +5413,36 @@ did_consider: m1 = &vm_pages[start_idx++]; #if !VM_PAGE_FIND_CONTIGUOUS_CAN_STEAL - assert(m1->free); + assert(m1->vm_page_q_state == VM_PAGE_ON_FREE_Q); #endif - if (m1->free) { + if (m1->vm_page_q_state == VM_PAGE_ON_FREE_Q) { unsigned int color; - color = m1->phys_page & vm_color_mask; + color = VM_PAGE_GET_COLOR(m1); #if MACH_ASSERT - vm_page_verify_free_list(&vm_page_queue_free[color], color, m1, TRUE); + vm_page_verify_free_list(&vm_page_queue_free[color].qhead, color, m1, TRUE); #endif - queue_remove(&vm_page_queue_free[color], - m1, - vm_page_t, - pageq); - m1->pageq.next = NULL; - m1->pageq.prev = NULL; + vm_page_queue_remove(&vm_page_queue_free[color].qhead, + m1, + vm_page_t, + pageq); + + VM_PAGE_ZERO_PAGEQ_ENTRY(m1); #if MACH_ASSERT - vm_page_verify_free_list(&vm_page_queue_free[color], color, VM_PAGE_NULL, FALSE); + vm_page_verify_free_list(&vm_page_queue_free[color].qhead, color, VM_PAGE_NULL, FALSE); #endif /* * Clear the "free" bit so that this page * does not get considered for another * concurrent physically-contiguous allocation. */ - m1->free = FALSE; + m1->vm_page_q_state = VM_PAGE_NOT_ON_Q; assert(m1->busy); vm_page_free_count--; } } - /* - * adjust global freelist counts - */ - if (vm_page_free_count < vm_page_free_count_minimum) - vm_page_free_count_minimum = vm_page_free_count; - if( flags & KMA_LOMEM) vm_page_lomem_find_contiguous_last_idx = page_idx; else @@ -3991,23 +5467,27 @@ did_consider: */ m1 = &vm_pages[cur_idx--]; - assert(!m1->free); - if (m1->object == VM_OBJECT_NULL) { + if (m1->vm_page_object == 0) { /* * page has already been removed from * the free list in the 1st pass */ + assert(m1->vm_page_q_state == VM_PAGE_NOT_ON_Q); assert(m1->offset == (vm_object_offset_t) -1); assert(m1->busy); assert(!m1->wanted); assert(!m1->laundry); } else { vm_object_t object; + int refmod; + boolean_t disconnected, reusable; if (abort_run == TRUE) continue; - object = m1->object; + assert(m1->vm_page_q_state != VM_PAGE_NOT_ON_Q); + + object = VM_PAGE_OBJECT(m1); if (object != locked_object) { if (locked_object) { @@ -4019,9 +5499,9 @@ did_consider: } if (locked_object == VM_OBJECT_NULL || (VM_PAGE_WIRED(m1) || m1->gobbled || - m1->encrypted || m1->encrypted_cleaning || m1->cs_validated || m1->cs_tainted || - m1->error || m1->absent || m1->pageout_queue || m1->laundry || m1->wanted || m1->precious || - m1->cleaning || m1->overwriting || m1->restart || m1->unusual || m1->busy)) { + m1->laundry || m1->wanted || + m1->cleaning || m1->overwriting || m1->free_when_done || m1->busy) || + (m1->vm_page_q_state == VM_PAGE_ON_PAGEOUT_Q)) { if (locked_object) { vm_object_unlock(locked_object); @@ -4031,8 +5511,31 @@ did_consider: abort_run = TRUE; continue; } - if (m1->pmapped || m1->dirty) { - int refmod; + + disconnected = FALSE; + reusable = FALSE; + + if ((m1->reusable || + object->all_reusable) && + (m1->vm_page_q_state == VM_PAGE_ON_INACTIVE_INTERNAL_Q) && + !m1->dirty && + !m1->reference) { + /* reusable page... */ + refmod = pmap_disconnect(VM_PAGE_GET_PHYS_PAGE(m1)); + disconnected = TRUE; + if (refmod == 0) { + /* + * ... not reused: can steal + * without relocating contents. + */ + reusable = TRUE; + } + } + + if ((m1->pmapped && + ! reusable) || + m1->dirty || + m1->precious) { vm_object_offset_t offset; m2 = vm_page_grab(); @@ -4046,30 +5549,67 @@ did_consider: abort_run = TRUE; continue; } - if (m1->pmapped) - refmod = pmap_disconnect(m1->phys_page); - else - refmod = 0; - vm_page_copy(m1, m2); - - m2->reference = m1->reference; - m2->dirty = m1->dirty; - - if (refmod & VM_MEM_REFERENCED) - m2->reference = TRUE; - if (refmod & VM_MEM_MODIFIED) { - SET_PAGE_DIRTY(m2, TRUE); + if (! disconnected) { + if (m1->pmapped) + refmod = pmap_disconnect(VM_PAGE_GET_PHYS_PAGE(m1)); + else + refmod = 0; } - offset = m1->offset; + + /* copy the page's contents */ + pmap_copy_page(VM_PAGE_GET_PHYS_PAGE(m1), VM_PAGE_GET_PHYS_PAGE(m2)); + /* copy the page's state */ + assert(!VM_PAGE_WIRED(m1)); + assert(m1->vm_page_q_state != VM_PAGE_ON_FREE_Q); + assert(m1->vm_page_q_state != VM_PAGE_ON_PAGEOUT_Q); + assert(!m1->laundry); + m2->reference = m1->reference; + assert(!m1->gobbled); + assert(!m1->private); + m2->no_cache = m1->no_cache; + m2->xpmapped = 0; + assert(!m1->busy); + assert(!m1->wanted); + assert(!m1->fictitious); + m2->pmapped = m1->pmapped; /* should flush cache ? */ + m2->wpmapped = m1->wpmapped; + assert(!m1->free_when_done); + m2->absent = m1->absent; + m2->error = m1->error; + m2->dirty = m1->dirty; + assert(!m1->cleaning); + m2->precious = m1->precious; + m2->clustered = m1->clustered; + assert(!m1->overwriting); + m2->restart = m1->restart; + m2->unusual = m1->unusual; + m2->cs_validated = m1->cs_validated; + m2->cs_tainted = m1->cs_tainted; + m2->cs_nx = m1->cs_nx; /* - * completely cleans up the state - * of the page so that it is ready - * to be put onto the free list, or - * for this purpose it looks like it - * just came off of the free list + * If m1 had really been reusable, + * we would have just stolen it, so + * let's not propagate it's "reusable" + * bit and assert that m2 is not + * marked as "reusable". */ - vm_page_free_prepare(m1); + // m2->reusable = m1->reusable; + assert(!m2->reusable); + + // assert(!m1->lopage); + m2->slid = m1->slid; + + if (m1->vm_page_q_state == VM_PAGE_USED_BY_COMPRESSOR) + m2->vm_page_q_state = VM_PAGE_USED_BY_COMPRESSOR; + + /* + * page may need to be flushed if + * it is marshalled into a UPL + * that is going to be used by a device + * that doesn't support coherency + */ + m2->written_by_kernel = TRUE; /* * make sure we clear the ref/mod state @@ -4077,20 +5617,52 @@ did_consider: * inheriting state from the last time * this page was used... */ - pmap_clear_refmod(m2->phys_page, VM_MEM_MODIFIED | VM_MEM_REFERENCED); + pmap_clear_refmod(VM_PAGE_GET_PHYS_PAGE(m2), VM_MEM_MODIFIED | VM_MEM_REFERENCED); + + if (refmod & VM_MEM_REFERENCED) + m2->reference = TRUE; + if (refmod & VM_MEM_MODIFIED) { + SET_PAGE_DIRTY(m2, TRUE); + } + offset = m1->offset; + + /* + * completely cleans up the state + * of the page so that it is ready + * to be put onto the free list, or + * for this purpose it looks like it + * just came off of the free list + */ + vm_page_free_prepare(m1); + /* - * now put the substitute page on the object + * now put the substitute page + * on the object */ - vm_page_insert_internal(m2, locked_object, offset, TRUE, TRUE, FALSE); + vm_page_insert_internal(m2, locked_object, offset, VM_KERN_MEMORY_NONE, TRUE, TRUE, FALSE, FALSE, NULL); - if (m2->reference) - vm_page_activate(m2); - else - vm_page_deactivate(m2); + if (m2->vm_page_q_state == VM_PAGE_USED_BY_COMPRESSOR) { + m2->pmapped = TRUE; + m2->wpmapped = TRUE; + PMAP_ENTER(kernel_pmap, m2->offset, m2, + VM_PROT_READ | VM_PROT_WRITE, VM_PROT_NONE, 0, TRUE, kr); + + assert(kr == KERN_SUCCESS); + + compressed_pages++; + + } else { + if (m2->reference) + vm_page_activate(m2); + else + vm_page_deactivate(m2); + } PAGE_WAKEUP_DONE(m2); } else { + assert(m1->vm_page_q_state != VM_PAGE_USED_BY_COMPRESSOR); + /* * completely cleans up the state * of the page so that it is ready @@ -4100,12 +5672,15 @@ did_consider: */ vm_page_free_prepare(m1); } -#if MACH_ASSERT + stolen_pages++; -#endif + } - m1->pageq.next = (queue_entry_t) m; - m1->pageq.prev = NULL; +#if CONFIG_BACKGROUND_QUEUE + vm_page_assign_background_state(m1); +#endif + VM_PAGE_ZERO_PAGEQ_ENTRY(m1); + m1->snext = m; m = m1; } if (locked_object) { @@ -4114,12 +5689,6 @@ did_consider: } if (abort_run == TRUE) { - if (m != VM_PAGE_NULL) { - vm_page_free_list(m, FALSE); - } -#if MACH_ASSERT - dumped_run++; -#endif /* * want the index of the last * page in this run that was @@ -4129,8 +5698,16 @@ did_consider: */ page_idx = tmp_start_idx + 2; if (page_idx >= vm_pages_count) { - if (wrapped) + if (wrapped) { + if (m != VM_PAGE_NULL) { + vm_page_unlock_queues(); + vm_page_free_list(m, FALSE); + vm_page_lock_queues(); + m = VM_PAGE_NULL; + } + dumped_run++; goto done_scanning; + } page_idx = last_idx = 0; wrapped = TRUE; } @@ -4150,6 +5727,14 @@ did_consider: last_idx = page_idx; + if (m != VM_PAGE_NULL) { + vm_page_unlock_queues(); + vm_page_free_list(m, FALSE); + vm_page_lock_queues(); + m = VM_PAGE_NULL; + } + dumped_run++; + lck_mtx_lock(&vm_page_queue_free_lock); /* * reset our free page limit since we @@ -4161,9 +5746,13 @@ did_consider: for (m1 = m; m1 != VM_PAGE_NULL; m1 = NEXT_PAGE(m1)) { - if (wire == TRUE) + assert(m1->vm_page_q_state == VM_PAGE_NOT_ON_Q); + assert(m1->wire_count == 0); + + if (wire == TRUE) { m1->wire_count++; - else + m1->vm_page_q_state = VM_PAGE_IS_WIRED; + } else m1->gobbled = TRUE; } if (wire == FALSE) @@ -4177,6 +5766,8 @@ did_consider: assert(vm_page_verify_contiguous(m, npages)); } done_scanning: + PAGE_REPLACEMENT_ALLOWED(FALSE); + vm_page_unlock_queues(); #if DEBUG @@ -4193,16 +5784,33 @@ done_scanning: tv_end_sec -= 1000000; } if (vm_page_find_contig_debug) { - printf("%s(num=%d,low=%d): found %d pages at 0x%llx in %ld.%06ds... started at %d... scanned %d pages... yielded %d times... dumped run %d times... stole %d pages\n", - __func__, contig_pages, max_pnum, npages, (vm_object_offset_t)start_pnum << PAGE_SHIFT, - (long)tv_end_sec, tv_end_usec, orig_last_idx, - scanned, yielded, dumped_run, stolen_pages); + printf("%s(num=%d,low=%d): found %d pages at 0x%llx in %ld.%06ds... started at %d... scanned %d pages... yielded %d times... dumped run %d times... stole %d pages... stole %d compressed pages\n", + __func__, contig_pages, max_pnum, npages, (vm_object_offset_t)start_pnum << PAGE_SHIFT, + (long)tv_end_sec, tv_end_usec, orig_last_idx, + scanned, yielded, dumped_run, stolen_pages, compressed_pages); } #endif #if MACH_ASSERT vm_page_verify_free_lists(); #endif + if (m == NULL && zone_gc_called == FALSE) { + printf("%s(num=%d,low=%d): found %d pages at 0x%llx...scanned %d pages... yielded %d times... dumped run %d times... stole %d pages... stole %d compressed pages... wired count is %d\n", + __func__, contig_pages, max_pnum, npages, (vm_object_offset_t)start_pnum << PAGE_SHIFT, + scanned, yielded, dumped_run, stolen_pages, compressed_pages, vm_page_wire_count); + + if (consider_buffer_cache_collect != NULL) { + (void)(*consider_buffer_cache_collect)(1); + } + + consider_zone_gc(FALSE); + + zone_gc_called = TRUE; + + printf("vm_page_find_contiguous: zone_gc called... wired count is %d\n", vm_page_wire_count); + goto full_scan_again; + } + return m; } @@ -4284,6 +5892,7 @@ unsigned int vm_max_delayed_work_limit = DEFAULT_DELAYED_WORK_LIMIT; void vm_page_do_delayed_work( vm_object_t object, + vm_tag_t tag, struct vm_page_delayed_work *dwp, int dw_count) { @@ -4324,31 +5933,34 @@ vm_page_do_delayed_work( if (dwp->dw_mask & DW_vm_pageout_throttle_up) vm_pageout_throttle_up(m); - +#if CONFIG_PHANTOM_CACHE + if (dwp->dw_mask & DW_vm_phantom_cache_update) + vm_phantom_cache_update(m); +#endif if (dwp->dw_mask & DW_vm_page_wire) - vm_page_wire(m); + vm_page_wire(m, tag, FALSE); else if (dwp->dw_mask & DW_vm_page_unwire) { boolean_t queueit; - queueit = (dwp->dw_mask & DW_vm_page_free) ? FALSE : TRUE; + queueit = (dwp->dw_mask & (DW_vm_page_free | DW_vm_page_deactivate_internal)) ? FALSE : TRUE; vm_page_unwire(m, queueit); } if (dwp->dw_mask & DW_vm_page_free) { vm_page_free_prepare_queues(m); - assert(m->pageq.next == NULL && m->pageq.prev == NULL); + assert(m->pageq.next == 0 && m->pageq.prev == 0); /* * Add this page to our list of reclaimed pages, * to be freed later. */ - m->pageq.next = (queue_entry_t) local_free_q; + m->snext = local_free_q; local_free_q = m; } else { if (dwp->dw_mask & DW_vm_page_deactivate_internal) vm_page_deactivate_internal(m, FALSE); else if (dwp->dw_mask & DW_vm_page_activate) { - if (m->active == FALSE) { + if (m->vm_page_q_state != VM_PAGE_ON_ACTIVE_Q) { vm_page_activate(m); } } @@ -4362,7 +5974,7 @@ vm_page_do_delayed_work( * cleaned queue, and so we would have a referenced (maybe even dirty) * page on that queue, which we don't want */ - int refmod_state = pmap_disconnect(m->phys_page); + int refmod_state = pmap_disconnect(VM_PAGE_GET_PHYS_PAGE(m)); if ((refmod_state & VM_MEM_REFERENCED)) { /* @@ -4373,7 +5985,7 @@ vm_page_do_delayed_work( vm_pageout_cleaned_reactivated++; vm_pageout_cleaned_commit_reactivated++; - if (m->active == FALSE) + if (m->vm_page_q_state != VM_PAGE_ON_ACTIVE_Q) vm_page_activate(m); } else { m->reference = FALSE; @@ -4383,8 +5995,8 @@ vm_page_do_delayed_work( else if (dwp->dw_mask & DW_vm_page_lru) vm_page_lru(m); else if (dwp->dw_mask & DW_VM_PAGE_QUEUES_REMOVE) { - if ( !m->pageout_queue) - VM_PAGE_QUEUES_REMOVE(m); + if (m->vm_page_q_state != VM_PAGE_ON_PAGEOUT_Q) + vm_page_queues_remove(m, TRUE); } if (dwp->dw_mask & DW_set_reference) m->reference = TRUE; @@ -4392,12 +6004,12 @@ vm_page_do_delayed_work( m->reference = FALSE; if (dwp->dw_mask & DW_move_page) { - if ( !m->pageout_queue) { - VM_PAGE_QUEUES_REMOVE(m); + if (m->vm_page_q_state != VM_PAGE_ON_PAGEOUT_Q) { + vm_page_queues_remove(m, FALSE); - assert(m->object != kernel_object); + assert(VM_PAGE_OBJECT(m) != kernel_object); - VM_PAGE_ENQUEUE_INACTIVE(m, FALSE); + vm_page_enqueue_inactive(m, FALSE); } } if (dwp->dw_mask & DW_clear_busy) @@ -4441,7 +6053,7 @@ vm_page_alloc_list( return (KERN_RESOURCE_SHORTAGE); } - mem->pageq.next = (queue_entry_t) lo_page_list; + mem->snext = lo_page_list; lo_page_list = mem; } *list = lo_page_list; @@ -4458,7 +6070,7 @@ vm_page_set_offset(vm_page_t page, vm_object_offset_t offset) vm_page_t vm_page_get_next(vm_page_t page) { - return ((vm_page_t) page->pageq.next); + return (page->snext); } vm_object_offset_t @@ -4470,7 +6082,7 @@ vm_page_get_offset(vm_page_t page) ppnum_t vm_page_get_phys_page(vm_page_t page) { - return (page->phys_page); + return (VM_PAGE_GET_PHYS_PAGE(page)); } @@ -4480,16 +6092,20 @@ vm_page_get_phys_page(vm_page_t page) static vm_page_t hibernate_gobble_queue; -extern boolean_t (* volatile consider_buffer_cache_collect)(int); - static int hibernate_drain_pageout_queue(struct vm_pageout_queue *); -static int hibernate_flush_dirty_pages(void); -static int hibernate_flush_queue(queue_head_t *, int); +static int hibernate_flush_dirty_pages(int); +static int hibernate_flush_queue(vm_page_queue_head_t *, int); void hibernate_flush_wait(void); void hibernate_mark_in_progress(void); void hibernate_clear_in_progress(void); +void hibernate_free_range(int, int); +void hibernate_hash_insert_page(vm_page_t); +uint32_t hibernate_mark_as_unneeded(addr64_t, addr64_t, hibernate_page_list_t *, hibernate_page_list_t *); +void hibernate_rebuild_vm_structs(void); +uint32_t hibernate_teardown_vm_structs(hibernate_page_list_t *, hibernate_page_list_t *); +ppnum_t hibernate_lookup_paddr(unsigned int); struct hibernate_statistics { int hibernate_considered; @@ -4498,6 +6114,7 @@ struct hibernate_statistics { int hibernate_skipped_cleaning; int hibernate_skipped_transient; int hibernate_skipped_precious; + int hibernate_skipped_external; int hibernate_queue_nolock; int hibernate_queue_paused; int hibernate_throttled; @@ -4512,15 +6129,25 @@ struct hibernate_statistics { int cd_found_cleaning; int cd_found_laundry; int cd_found_dirty; + int cd_found_xpmapped; + int cd_skipped_xpmapped; int cd_local_free; int cd_total_free; int cd_vm_page_wire_count; + int cd_vm_struct_pages_unneeded; int cd_pages; int cd_discarded; int cd_count_wire; } hibernate_stats; +/* + * clamp the number of 'xpmapped' pages we'll sweep into the hibernation image + * so that we don't overrun the estimated image size, which would + * result in a hibernation failure. + */ +#define HIBERNATE_XPMAPPED_LIMIT 40000 + static int hibernate_drain_pageout_queue(struct vm_pageout_queue *q) @@ -4529,7 +6156,7 @@ hibernate_drain_pageout_queue(struct vm_pageout_queue *q) vm_page_lock_queues(); - while (q->pgo_laundry) { + while ( !vm_page_queue_empty(&q->pgo_pending) ) { q->pgo_draining = TRUE; @@ -4539,8 +6166,12 @@ hibernate_drain_pageout_queue(struct vm_pageout_queue *q) wait_result = thread_block(THREAD_CONTINUE_NULL); - if (wait_result == THREAD_TIMED_OUT) { + if (wait_result == THREAD_TIMED_OUT && !vm_page_queue_empty(&q->pgo_pending)) { hibernate_stats.hibernate_drain_timeout++; + + if (q == &vm_pageout_queue_external) + return (0); + return (1); } vm_page_lock_queues(); @@ -4553,8 +6184,10 @@ hibernate_drain_pageout_queue(struct vm_pageout_queue *q) } +boolean_t hibernate_skip_external = FALSE; + static int -hibernate_flush_queue(queue_head_t *q, int qcount) +hibernate_flush_queue(vm_page_queue_head_t *q, int qcount) { vm_page_t m; vm_object_t l_object = NULL; @@ -4567,16 +6200,15 @@ hibernate_flush_queue(queue_head_t *q, int qcount) struct vm_pageout_queue *eq; struct vm_pageout_queue *tq; - hibernate_cleaning_in_progress = TRUE; + KDBG(IOKDBG_CODE(DBG_HIBERNATE, 4) | DBG_FUNC_START, + VM_KERNEL_UNSLIDE_OR_PERM(q), qcount); - KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 4) | DBG_FUNC_START, q, qcount, 0, 0, 0); - iq = &vm_pageout_queue_internal; eq = &vm_pageout_queue_external; vm_page_lock_queues(); - while (qcount && !queue_empty(q)) { + while (qcount && !vm_page_queue_empty(q)) { if (current_run++ == 1000) { if (hibernate_should_abort()) { @@ -4586,8 +6218,8 @@ hibernate_flush_queue(queue_head_t *q, int qcount) current_run = 0; } - m = (vm_page_t) queue_first(q); - m_object = m->object; + m = (vm_page_t) vm_page_queue_first(q); + m_object = VM_PAGE_OBJECT(m); /* * check to see if we currently are working @@ -4618,7 +6250,6 @@ hibernate_flush_queue(queue_head_t *q, int qcount) goto reenter_pg_on_q; } - vm_pageout_scan_wants_object = m_object; vm_page_unlock_queues(); mutex_pause(try_failed_count++); @@ -4628,10 +6259,9 @@ hibernate_flush_queue(queue_head_t *q, int qcount) continue; } else { l_object = m_object; - vm_pageout_scan_wants_object = VM_OBJECT_NULL; } } - if ( !m_object->alive || m->encrypted_cleaning || m->cleaning || m->laundry || m->busy || m->absent || m->error) { + if ( !m_object->alive || m->cleaning || m->laundry || m->busy || m->absent || m->error) { /* * page is not to be cleaned * put it back on the head of its queue @@ -4643,9 +6273,6 @@ hibernate_flush_queue(queue_head_t *q, int qcount) goto reenter_pg_on_q; } - if ( !m_object->pager_initialized && m_object->pager_created) - goto reenter_pg_on_q; - if (m_object->copy == VM_OBJECT_NULL) { if (m_object->purgable == VM_PURGABLE_VOLATILE || m_object->purgable == VM_PURGABLE_EMPTY) { /* @@ -4656,7 +6283,7 @@ hibernate_flush_queue(queue_head_t *q, int qcount) } } if ( !m->dirty && m->pmapped) { - refmod_state = pmap_get_refmod(m->phys_page); + refmod_state = pmap_get_refmod(VM_PAGE_GET_PHYS_PAGE(m)); if ((refmod_state & VM_MEM_MODIFIED)) { SET_PAGE_DIRTY(m, FALSE); @@ -4674,6 +6301,13 @@ hibernate_flush_queue(queue_head_t *q, int qcount) goto reenter_pg_on_q; } + + if (hibernate_skip_external == TRUE && !m_object->internal) { + + hibernate_stats.hibernate_skipped_external++; + + goto reenter_pg_on_q; + } tq = NULL; if (m_object->internal) { @@ -4690,12 +6324,11 @@ hibernate_flush_queue(queue_head_t *q, int qcount) vm_object_unlock(l_object); l_object = NULL; } - vm_pageout_scan_wants_object = VM_OBJECT_NULL; - - tq->pgo_throttled = TRUE; while (retval == 0) { + tq->pgo_throttled = TRUE; + assert_wait_timeout((event_t) &tq->pgo_laundry, THREAD_INTERRUPTIBLE, 1000, 1000*NSEC_PER_USEC); vm_page_unlock_queues(); @@ -4704,14 +6337,22 @@ hibernate_flush_queue(queue_head_t *q, int qcount) vm_page_lock_queues(); + if (wait_result != THREAD_TIMED_OUT) + break; + if (!VM_PAGE_Q_THROTTLED(tq)) + break; + if (hibernate_should_abort()) retval = 1; - if (wait_result != THREAD_TIMED_OUT) - break; - if (--wait_count == 0) { + hibernate_stats.hibernate_throttle_timeout++; + + if (tq == eq) { + hibernate_skip_external = TRUE; + break; + } retval = 1; } } @@ -4725,21 +6366,22 @@ hibernate_flush_queue(queue_head_t *q, int qcount) /* * we've already factored out pages in the laundry which * means this page can't be on the pageout queue so it's - * safe to do the VM_PAGE_QUEUES_REMOVE + * safe to do the vm_page_queues_remove */ - assert(!m->pageout_queue); + vm_page_queues_remove(m, TRUE); - VM_PAGE_QUEUES_REMOVE(m); + if (m_object->internal == TRUE) + pmap_disconnect_options(VM_PAGE_GET_PHYS_PAGE(m), PMAP_OPTIONS_COMPRESSOR, NULL); - vm_pageout_cluster(m, FALSE); + vm_pageout_cluster(m); hibernate_stats.hibernate_found_dirty++; goto next_pg; reenter_pg_on_q: - queue_remove(q, m, vm_page_t, pageq); - queue_enter(q, m, vm_page_t, pageq); + vm_page_queue_remove(q, m, vm_page_t, pageq); + vm_page_queue_enter(q, m, vm_page_t, pageq); hibernate_stats.hibernate_reentered_on_q++; next_pg: @@ -4752,26 +6394,21 @@ next_pg: vm_object_unlock(l_object); l_object = NULL; } - vm_pageout_scan_wants_object = VM_OBJECT_NULL; vm_page_unlock_queues(); KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 4) | DBG_FUNC_END, hibernate_stats.hibernate_found_dirty, retval, 0, 0, 0); - hibernate_cleaning_in_progress = FALSE; - return (retval); } static int -hibernate_flush_dirty_pages() +hibernate_flush_dirty_pages(int pass) { struct vm_speculative_age_q *aq; uint32_t i; - bzero(&hibernate_stats, sizeof(struct hibernate_statistics)); - if (vm_page_local_q) { for (i = 0; i < vm_page_local_q_count; i++) vm_page_reactivate_local(i, TRUE, FALSE); @@ -4783,13 +6420,13 @@ hibernate_flush_dirty_pages() aq = &vm_page_queue_speculative[i]; - if (queue_empty(&aq->age_q)) + if (vm_page_queue_empty(&aq->age_q)) continue; qcount = 0; vm_page_lockspin_queues(); - queue_iterate(&aq->age_q, + vm_page_queue_iterate(&aq->age_q, m, vm_page_t, pageq) @@ -4803,57 +6440,97 @@ hibernate_flush_dirty_pages() return (1); } } - if (hibernate_flush_queue(&vm_page_queue_active, vm_page_active_count)) - return (1); if (hibernate_flush_queue(&vm_page_queue_inactive, vm_page_inactive_count - vm_page_anonymous_count - vm_page_cleaned_count)) return (1); + /* XXX FBDP TODO: flush secluded queue */ if (hibernate_flush_queue(&vm_page_queue_anonymous, vm_page_anonymous_count)) return (1); if (hibernate_flush_queue(&vm_page_queue_cleaned, vm_page_cleaned_count)) return (1); - if (hibernate_drain_pageout_queue(&vm_pageout_queue_internal)) return (1); - return (hibernate_drain_pageout_queue(&vm_pageout_queue_external)); + + if (pass == 1) + vm_compressor_record_warmup_start(); + + if (hibernate_flush_queue(&vm_page_queue_active, vm_page_active_count)) { + if (pass == 1) + vm_compressor_record_warmup_end(); + return (1); + } + if (hibernate_drain_pageout_queue(&vm_pageout_queue_internal)) { + if (pass == 1) + vm_compressor_record_warmup_end(); + return (1); + } + if (pass == 1) + vm_compressor_record_warmup_end(); + + if (hibernate_skip_external == FALSE && hibernate_drain_pageout_queue(&vm_pageout_queue_external)) + return (1); + + return (0); } -extern void IOSleep(unsigned int); -extern int sync_internal(void); +void +hibernate_reset_stats() +{ + bzero(&hibernate_stats, sizeof(struct hibernate_statistics)); +} + int hibernate_flush_memory() { int retval; + assert(VM_CONFIG_COMPRESSOR_IS_PRESENT); + KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 3) | DBG_FUNC_START, vm_page_free_count, 0, 0, 0, 0); - IOSleep(2 * 1000); + hibernate_cleaning_in_progress = TRUE; + hibernate_skip_external = FALSE; + + if ((retval = hibernate_flush_dirty_pages(1)) == 0) { + + KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 10) | DBG_FUNC_START, VM_PAGE_COMPRESSOR_COUNT, 0, 0, 0, 0); - KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 3) | DBG_FUNC_NONE, vm_page_free_count, 0, 0, 0, 0); + vm_compressor_flush(); + + KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 10) | DBG_FUNC_END, VM_PAGE_COMPRESSOR_COUNT, 0, 0, 0, 0); - if ((retval = hibernate_flush_dirty_pages()) == 0) { if (consider_buffer_cache_collect != NULL) { + unsigned int orig_wire_count; - KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 7) | DBG_FUNC_START, vm_page_wire_count, 0, 0, 0, 0); + KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 7) | DBG_FUNC_START, 0, 0, 0, 0, 0); + orig_wire_count = vm_page_wire_count; - sync_internal(); (void)(*consider_buffer_cache_collect)(1); - consider_zone_gc(TRUE); + consider_zone_gc(FALSE); + + HIBLOG("hibernate_flush_memory: buffer_cache_gc freed up %d wired pages\n", orig_wire_count - vm_page_wire_count); - KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 7) | DBG_FUNC_END, vm_page_wire_count, 0, 0, 0, 0); + KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 7) | DBG_FUNC_END, orig_wire_count - vm_page_wire_count, 0, 0, 0, 0); } } + hibernate_cleaning_in_progress = FALSE; + KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 3) | DBG_FUNC_END, vm_page_free_count, hibernate_stats.hibernate_found_dirty, retval, 0, 0); + if (retval) + HIBLOG("hibernate_flush_memory() failed to finish - vm_page_compressor_count(%d)\n", VM_PAGE_COMPRESSOR_COUNT); + + HIBPRINT("hibernate_flush_memory() considered(%d) reentered_on_q(%d) found_dirty(%d)\n", hibernate_stats.hibernate_considered, hibernate_stats.hibernate_reentered_on_q, hibernate_stats.hibernate_found_dirty); - HIBPRINT(" skipped_cleaning(%d) skipped_transient(%d) skipped_precious(%d) queue_nolock(%d)\n", + HIBPRINT(" skipped_cleaning(%d) skipped_transient(%d) skipped_precious(%d) skipped_external(%d) queue_nolock(%d)\n", hibernate_stats.hibernate_skipped_cleaning, hibernate_stats.hibernate_skipped_transient, hibernate_stats.hibernate_skipped_precious, + hibernate_stats.hibernate_skipped_external, hibernate_stats.hibernate_queue_nolock); HIBPRINT(" queue_paused(%d) throttled(%d) throttle_timeout(%d) drained(%d) drain_timeout(%d)\n", hibernate_stats.hibernate_queue_paused, @@ -4887,38 +6564,6 @@ hibernate_page_list_zero(hibernate_page_list_t *list) } } -void -hibernate_gobble_pages(uint32_t gobble_count, uint32_t free_page_time) -{ - uint32_t i; - vm_page_t m; - uint64_t start, end, timeout, nsec; - clock_interval_to_deadline(free_page_time, 1000 * 1000 /*ms*/, &timeout); - clock_get_uptime(&start); - - for (i = 0; i < gobble_count; i++) - { - while (VM_PAGE_NULL == (m = vm_page_grab())) - { - clock_get_uptime(&end); - if (end >= timeout) - break; - VM_PAGE_WAIT(); - } - if (!m) - break; - m->busy = FALSE; - vm_page_gobble(m); - - m->pageq.next = (queue_entry_t) hibernate_gobble_queue; - hibernate_gobble_queue = m; - } - - clock_get_uptime(&end); - absolutetime_to_nanoseconds(end - start, &nsec); - HIBLOG("Gobbled %d pages, time: %qd ms\n", i, nsec / 1000000ULL); -} - void hibernate_free_gobble_pages(void) { @@ -4928,7 +6573,7 @@ hibernate_free_gobble_pages(void) m = (vm_page_t) hibernate_gobble_queue; while(m) { - next = (vm_page_t) m->pageq.next; + next = m->snext; vm_page_free(m); count++; m = next; @@ -4940,7 +6585,7 @@ hibernate_free_gobble_pages(void) } static boolean_t -hibernate_consider_discard(vm_page_t m) +hibernate_consider_discard(vm_page_t m, boolean_t preflight) { vm_object_t object = NULL; int refmod_state; @@ -4951,45 +6596,46 @@ hibernate_consider_discard(vm_page_t m) if (m->private) panic("hibernate_consider_discard: private"); - if (!vm_object_lock_try(m->object)) { - hibernate_stats.cd_lock_failed++; + object = VM_PAGE_OBJECT(m); + + if (!vm_object_lock_try(object)) { + object = NULL; + if (!preflight) hibernate_stats.cd_lock_failed++; break; } - object = m->object; - if (VM_PAGE_WIRED(m)) { - hibernate_stats.cd_found_wired++; + if (!preflight) hibernate_stats.cd_found_wired++; break; } if (m->precious) { - hibernate_stats.cd_found_precious++; + if (!preflight) hibernate_stats.cd_found_precious++; break; } if (m->busy || !object->alive) { /* * Somebody is playing with this page. */ - hibernate_stats.cd_found_busy++; + if (!preflight) hibernate_stats.cd_found_busy++; break; } if (m->absent || m->unusual || m->error) { /* * If it's unusual in anyway, ignore it */ - hibernate_stats.cd_found_unusual++; + if (!preflight) hibernate_stats.cd_found_unusual++; break; } if (m->cleaning) { - hibernate_stats.cd_found_cleaning++; + if (!preflight) hibernate_stats.cd_found_cleaning++; break; } if (m->laundry) { - hibernate_stats.cd_found_laundry++; + if (!preflight) hibernate_stats.cd_found_laundry++; break; } if (!m->dirty) { - refmod_state = pmap_get_refmod(m->phys_page); + refmod_state = pmap_get_refmod(VM_PAGE_GET_PHYS_PAGE(m)); if (refmod_state & VM_MEM_REFERENCED) m->reference = TRUE; @@ -5005,8 +6651,20 @@ hibernate_consider_discard(vm_page_t m) || (VM_PURGABLE_VOLATILE == object->purgable) || (VM_PURGABLE_EMPTY == object->purgable); - if (discard == FALSE) - hibernate_stats.cd_found_dirty++; + + if (discard == FALSE) { + if (!preflight) + hibernate_stats.cd_found_dirty++; + } else if (m->xpmapped && m->reference && !object->internal) { + if (hibernate_stats.cd_found_xpmapped < HIBERNATE_XPMAPPED_LIMIT) { + if (!preflight) + hibernate_stats.cd_found_xpmapped++; + discard = FALSE; + } else { + if (!preflight) + hibernate_stats.cd_skipped_xpmapped++; + } + } } while (FALSE); @@ -5020,24 +6678,27 @@ hibernate_consider_discard(vm_page_t m) static void hibernate_discard_page(vm_page_t m) { + vm_object_t m_object; + if (m->absent || m->unusual || m->error) /* * If it's unusual in anyway, ignore */ return; -#if DEBUG - vm_object_t object = m->object; - if (!vm_object_lock_try(m->object)) + m_object = VM_PAGE_OBJECT(m); + +#if MACH_ASSERT || DEBUG + if (!vm_object_lock_try(m_object)) panic("hibernate_discard_page(%p) !vm_object_lock_try", m); #else /* No need to lock page queue for token delete, hibernate_vm_unlock() makes sure these locks are uncontended before sleep */ -#endif /* !DEBUG */ +#endif /* MACH_ASSERT || DEBUG */ if (m->pmapped == TRUE) { - __unused int refmod_state = pmap_disconnect(m->phys_page); + __unused int refmod_state = pmap_disconnect(VM_PAGE_GET_PHYS_PAGE(m)); } if (m->laundry) @@ -5047,21 +6708,75 @@ hibernate_discard_page(vm_page_t m) if (m->fictitious) panic("hibernate_discard_page(%p) fictitious", m); - if (VM_PURGABLE_VOLATILE == m->object->purgable) + if (VM_PURGABLE_VOLATILE == m_object->purgable) { /* object should be on a queue */ - assert((m->object->objq.next != NULL) && (m->object->objq.prev != NULL)); - purgeable_q_t old_queue = vm_purgeable_object_remove(m->object); + assert((m_object->objq.next != NULL) && (m_object->objq.prev != NULL)); + purgeable_q_t old_queue = vm_purgeable_object_remove(m_object); assert(old_queue); - vm_purgeable_token_delete_first(old_queue); - m->object->purgable = VM_PURGABLE_EMPTY; + if (m_object->purgeable_when_ripe) { + vm_purgeable_token_delete_first(old_queue); + } + vm_object_lock_assert_exclusive(m_object); + m_object->purgable = VM_PURGABLE_EMPTY; + + /* + * Purgeable ledgers: pages of VOLATILE and EMPTY objects are + * accounted in the "volatile" ledger, so no change here. + * We have to update vm_page_purgeable_count, though, since we're + * effectively purging this object. + */ + unsigned int delta; + assert(m_object->resident_page_count >= m_object->wired_page_count); + delta = (m_object->resident_page_count - m_object->wired_page_count); + assert(vm_page_purgeable_count >= delta); + assert(delta > 0); + OSAddAtomic(-delta, (SInt32 *)&vm_page_purgeable_count); } vm_page_free(m); -#if DEBUG - vm_object_unlock(object); -#endif /* DEBUG */ +#if MACH_ASSERT || DEBUG + vm_object_unlock(m_object); +#endif /* MACH_ASSERT || DEBUG */ +} + +/* + Grab locks for hibernate_page_list_setall() +*/ +void +hibernate_vm_lock_queues(void) +{ + vm_object_lock(compressor_object); + vm_page_lock_queues(); + lck_mtx_lock(&vm_page_queue_free_lock); + lck_mtx_lock(&vm_purgeable_queue_lock); + + if (vm_page_local_q) { + uint32_t i; + for (i = 0; i < vm_page_local_q_count; i++) { + struct vpl *lq; + lq = &vm_page_local_q[i].vpl_un.vpl; + VPL_LOCK(&lq->vpl_lock); + } + } +} + +void +hibernate_vm_unlock_queues(void) +{ + if (vm_page_local_q) { + uint32_t i; + for (i = 0; i < vm_page_local_q_count; i++) { + struct vpl *lq; + lq = &vm_page_local_q[i].vpl_un.vpl; + VPL_UNLOCK(&lq->vpl_lock); + } + } + lck_mtx_unlock(&vm_purgeable_queue_lock); + lck_mtx_unlock(&vm_page_queue_free_lock); + vm_page_unlock_queues(); + vm_object_unlock(compressor_object); } /* @@ -5074,12 +6789,15 @@ void hibernate_page_list_setall(hibernate_page_list_t * page_list, hibernate_page_list_t * page_list_wired, hibernate_page_list_t * page_list_pal, + boolean_t preflight, + boolean_t will_discard, uint32_t * pagesOut) { uint64_t start, end, nsec; vm_page_t m; + vm_page_t next; uint32_t pages = page_list->page_count; - uint32_t count_zf = 0, count_throttled = 0; + uint32_t count_anonymous = 0, count_throttled = 0, count_compressor = 0; uint32_t count_inactive = 0, count_active = 0, count_speculative = 0, count_cleaned = 0; uint32_t count_wire = pages; uint32_t count_discard_active = 0; @@ -5087,15 +6805,29 @@ hibernate_page_list_setall(hibernate_page_list_t * page_list, uint32_t count_discard_cleaned = 0; uint32_t count_discard_purgeable = 0; uint32_t count_discard_speculative = 0; + uint32_t count_discard_vm_struct_pages = 0; uint32_t i; uint32_t bank; hibernate_bitmap_t * bitmap; hibernate_bitmap_t * bitmap_wired; + boolean_t discard_all; + boolean_t discard; + + HIBLOG("hibernate_page_list_setall(preflight %d) start\n", preflight); + + if (preflight) { + page_list = NULL; + page_list_wired = NULL; + page_list_pal = NULL; + discard_all = FALSE; + } else { + discard_all = will_discard; + } - - HIBLOG("hibernate_page_list_setall start %p, %p\n", page_list, page_list_wired); - -#if DEBUG +#if MACH_ASSERT || DEBUG + if (!preflight) + { + assert(hibernate_vm_locks_are_safe()); vm_page_lock_queues(); if (vm_page_local_q) { for (i = 0; i < vm_page_local_q_count; i++) { @@ -5104,45 +6836,58 @@ hibernate_page_list_setall(hibernate_page_list_t * page_list, VPL_LOCK(&lq->vpl_lock); } } -#endif /* DEBUG */ + } +#endif /* MACH_ASSERT || DEBUG */ KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 8) | DBG_FUNC_START, count_wire, 0, 0, 0, 0); clock_get_uptime(&start); - hibernate_page_list_zero(page_list); - hibernate_page_list_zero(page_list_wired); - hibernate_page_list_zero(page_list_pal); - - hibernate_stats.cd_vm_page_wire_count = vm_page_wire_count; - hibernate_stats.cd_pages = pages; + if (!preflight) { + hibernate_page_list_zero(page_list); + hibernate_page_list_zero(page_list_wired); + hibernate_page_list_zero(page_list_pal); + + hibernate_stats.cd_vm_page_wire_count = vm_page_wire_count; + hibernate_stats.cd_pages = pages; + } if (vm_page_local_q) { for (i = 0; i < vm_page_local_q_count; i++) - vm_page_reactivate_local(i, TRUE, TRUE); + vm_page_reactivate_local(i, TRUE, !preflight); + } + + if (preflight) { + vm_object_lock(compressor_object); + vm_page_lock_queues(); + lck_mtx_lock(&vm_page_queue_free_lock); } m = (vm_page_t) hibernate_gobble_queue; - while(m) + while (m) { pages--; count_wire--; - hibernate_page_bitset(page_list, TRUE, m->phys_page); - hibernate_page_bitset(page_list_wired, TRUE, m->phys_page); - m = (vm_page_t) m->pageq.next; + if (!preflight) { + hibernate_page_bitset(page_list, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); + hibernate_page_bitset(page_list_wired, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); + } + m = m->snext; } - for( i = 0; i < real_ncpus; i++ ) + if (!preflight) for( i = 0; i < real_ncpus; i++ ) { if (cpu_data_ptr[i] && cpu_data_ptr[i]->cpu_processor) { - for (m = PROCESSOR_DATA(cpu_data_ptr[i]->cpu_processor, free_pages); m; m = (vm_page_t)m->pageq.next) + for (m = PROCESSOR_DATA(cpu_data_ptr[i]->cpu_processor, free_pages); m; m = m->snext) { + assert(m->vm_page_q_state == VM_PAGE_ON_FREE_LOCAL_Q); + pages--; count_wire--; - hibernate_page_bitset(page_list, TRUE, m->phys_page); - hibernate_page_bitset(page_list_wired, TRUE, m->phys_page); + hibernate_page_bitset(page_list, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); + hibernate_page_bitset(page_list_wired, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); hibernate_stats.cd_local_free++; hibernate_stats.cd_total_free++; @@ -5152,188 +6897,271 @@ hibernate_page_list_setall(hibernate_page_list_t * page_list, for( i = 0; i < vm_colors; i++ ) { - queue_iterate(&vm_page_queue_free[i], - m, - vm_page_t, - pageq) + vm_page_queue_iterate(&vm_page_queue_free[i].qhead, + m, + vm_page_t, + pageq) { + assert(m->vm_page_q_state == VM_PAGE_ON_FREE_Q); + pages--; count_wire--; - hibernate_page_bitset(page_list, TRUE, m->phys_page); - hibernate_page_bitset(page_list_wired, TRUE, m->phys_page); - - hibernate_stats.cd_total_free++; + if (!preflight) { + hibernate_page_bitset(page_list, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); + hibernate_page_bitset(page_list_wired, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); + + hibernate_stats.cd_total_free++; + } } } - queue_iterate(&vm_lopage_queue_free, - m, - vm_page_t, - pageq) + vm_page_queue_iterate(&vm_lopage_queue_free, + m, + vm_page_t, + pageq) { + assert(m->vm_page_q_state == VM_PAGE_ON_FREE_LOPAGE_Q); + pages--; count_wire--; - hibernate_page_bitset(page_list, TRUE, m->phys_page); - hibernate_page_bitset(page_list_wired, TRUE, m->phys_page); - - hibernate_stats.cd_total_free++; + if (!preflight) { + hibernate_page_bitset(page_list, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); + hibernate_page_bitset(page_list_wired, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); + + hibernate_stats.cd_total_free++; + } } - queue_iterate( &vm_page_queue_throttled, - m, - vm_page_t, - pageq ) + m = (vm_page_t) vm_page_queue_first(&vm_page_queue_throttled); + while (m && !vm_page_queue_end(&vm_page_queue_throttled, (vm_page_queue_entry_t)m)) { + assert(m->vm_page_q_state == VM_PAGE_ON_THROTTLED_Q); + + next = (vm_page_t)VM_PAGE_UNPACK_PTR(m->pageq.next); + discard = FALSE; if ((kIOHibernateModeDiscardCleanInactive & gIOHibernateMode) - && hibernate_consider_discard(m)) + && hibernate_consider_discard(m, preflight)) { - hibernate_page_bitset(page_list, TRUE, m->phys_page); + if (!preflight) hibernate_page_bitset(page_list, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); count_discard_inactive++; + discard = discard_all; } else count_throttled++; count_wire--; - hibernate_page_bitset(page_list_wired, TRUE, m->phys_page); + if (!preflight) hibernate_page_bitset(page_list_wired, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); + + if (discard) hibernate_discard_page(m); + m = next; } - queue_iterate( &vm_page_queue_anonymous, - m, - vm_page_t, - pageq ) + m = (vm_page_t) vm_page_queue_first(&vm_page_queue_anonymous); + while (m && !vm_page_queue_end(&vm_page_queue_anonymous, (vm_page_queue_entry_t)m)) { + assert(m->vm_page_q_state == VM_PAGE_ON_INACTIVE_INTERNAL_Q); + + next = (vm_page_t)VM_PAGE_UNPACK_PTR(m->pageq.next); + discard = FALSE; if ((kIOHibernateModeDiscardCleanInactive & gIOHibernateMode) - && hibernate_consider_discard(m)) + && hibernate_consider_discard(m, preflight)) { - hibernate_page_bitset(page_list, TRUE, m->phys_page); + if (!preflight) hibernate_page_bitset(page_list, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); if (m->dirty) count_discard_purgeable++; else count_discard_inactive++; + discard = discard_all; } else - count_zf++; + count_anonymous++; count_wire--; - hibernate_page_bitset(page_list_wired, TRUE, m->phys_page); + if (!preflight) hibernate_page_bitset(page_list_wired, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); + if (discard) hibernate_discard_page(m); + m = next; } - queue_iterate( &vm_page_queue_inactive, - m, - vm_page_t, - pageq ) + m = (vm_page_t) vm_page_queue_first(&vm_page_queue_cleaned); + while (m && !vm_page_queue_end(&vm_page_queue_cleaned, (vm_page_queue_entry_t)m)) { + assert(m->vm_page_q_state == VM_PAGE_ON_INACTIVE_CLEANED_Q); + + next = (vm_page_t)VM_PAGE_UNPACK_PTR(m->pageq.next); + discard = FALSE; if ((kIOHibernateModeDiscardCleanInactive & gIOHibernateMode) - && hibernate_consider_discard(m)) + && hibernate_consider_discard(m, preflight)) { - hibernate_page_bitset(page_list, TRUE, m->phys_page); + if (!preflight) hibernate_page_bitset(page_list, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); if (m->dirty) count_discard_purgeable++; else - count_discard_inactive++; + count_discard_cleaned++; + discard = discard_all; } else - count_inactive++; + count_cleaned++; count_wire--; - hibernate_page_bitset(page_list_wired, TRUE, m->phys_page); + if (!preflight) hibernate_page_bitset(page_list_wired, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); + if (discard) hibernate_discard_page(m); + m = next; } - queue_iterate( &vm_page_queue_cleaned, - m, - vm_page_t, - pageq ) + m = (vm_page_t) vm_page_queue_first(&vm_page_queue_active); + while (m && !vm_page_queue_end(&vm_page_queue_active, (vm_page_queue_entry_t)m)) { - if ((kIOHibernateModeDiscardCleanInactive & gIOHibernateMode) - && hibernate_consider_discard(m)) + assert(m->vm_page_q_state == VM_PAGE_ON_ACTIVE_Q); + + next = (vm_page_t)VM_PAGE_UNPACK_PTR(m->pageq.next); + discard = FALSE; + if ((kIOHibernateModeDiscardCleanActive & gIOHibernateMode) + && hibernate_consider_discard(m, preflight)) { - hibernate_page_bitset(page_list, TRUE, m->phys_page); + if (!preflight) hibernate_page_bitset(page_list, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); if (m->dirty) count_discard_purgeable++; else - count_discard_cleaned++; + count_discard_active++; + discard = discard_all; } else - count_cleaned++; + count_active++; count_wire--; - hibernate_page_bitset(page_list_wired, TRUE, m->phys_page); + if (!preflight) hibernate_page_bitset(page_list_wired, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); + if (discard) hibernate_discard_page(m); + m = next; } - for( i = 0; i <= VM_PAGE_MAX_SPECULATIVE_AGE_Q; i++ ) + m = (vm_page_t) vm_page_queue_first(&vm_page_queue_inactive); + while (m && !vm_page_queue_end(&vm_page_queue_inactive, (vm_page_queue_entry_t)m)) { - queue_iterate(&vm_page_queue_speculative[i].age_q, - m, - vm_page_t, - pageq) - { - if ((kIOHibernateModeDiscardCleanInactive & gIOHibernateMode) - && hibernate_consider_discard(m)) - { - hibernate_page_bitset(page_list, TRUE, m->phys_page); - count_discard_speculative++; - } - else - count_speculative++; - count_wire--; - hibernate_page_bitset(page_list_wired, TRUE, m->phys_page); - } - } + assert(m->vm_page_q_state == VM_PAGE_ON_INACTIVE_EXTERNAL_Q); - queue_iterate( &vm_page_queue_active, - m, - vm_page_t, - pageq ) - { - if ((kIOHibernateModeDiscardCleanActive & gIOHibernateMode) - && hibernate_consider_discard(m)) + next = (vm_page_t)VM_PAGE_UNPACK_PTR(m->pageq.next); + discard = FALSE; + if ((kIOHibernateModeDiscardCleanInactive & gIOHibernateMode) + && hibernate_consider_discard(m, preflight)) { - hibernate_page_bitset(page_list, TRUE, m->phys_page); + if (!preflight) hibernate_page_bitset(page_list, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); if (m->dirty) count_discard_purgeable++; else - count_discard_active++; + count_discard_inactive++; + discard = discard_all; } else - count_active++; + count_inactive++; count_wire--; - hibernate_page_bitset(page_list_wired, TRUE, m->phys_page); + if (!preflight) hibernate_page_bitset(page_list_wired, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); + if (discard) hibernate_discard_page(m); + m = next; } + /* XXX FBDP TODO: secluded queue */ + + for( i = 0; i <= VM_PAGE_MAX_SPECULATIVE_AGE_Q; i++ ) + { + m = (vm_page_t) vm_page_queue_first(&vm_page_queue_speculative[i].age_q); + while (m && !vm_page_queue_end(&vm_page_queue_speculative[i].age_q, (vm_page_queue_entry_t)m)) + { + assert(m->vm_page_q_state == VM_PAGE_ON_SPECULATIVE_Q); - // pull wired from hibernate_bitmap + next = (vm_page_t)VM_PAGE_UNPACK_PTR(m->pageq.next); + discard = FALSE; + if ((kIOHibernateModeDiscardCleanInactive & gIOHibernateMode) + && hibernate_consider_discard(m, preflight)) + { + if (!preflight) hibernate_page_bitset(page_list, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); + count_discard_speculative++; + discard = discard_all; + } + else + count_speculative++; + count_wire--; + if (!preflight) hibernate_page_bitset(page_list_wired, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); + if (discard) hibernate_discard_page(m); + m = next; + } + } - bitmap = &page_list->bank_bitmap[0]; - bitmap_wired = &page_list_wired->bank_bitmap[0]; - for (bank = 0; bank < page_list->bank_count; bank++) + vm_page_queue_iterate(&compressor_object->memq, m, vm_page_t, listq) { - for (i = 0; i < bitmap->bitmapwords; i++) - bitmap->bitmap[i] = bitmap->bitmap[i] | ~bitmap_wired->bitmap[i]; - bitmap = (hibernate_bitmap_t *) &bitmap->bitmap [bitmap->bitmapwords]; - bitmap_wired = (hibernate_bitmap_t *) &bitmap_wired->bitmap[bitmap_wired->bitmapwords]; + assert(m->vm_page_q_state == VM_PAGE_USED_BY_COMPRESSOR); + + count_compressor++; + count_wire--; + if (!preflight) hibernate_page_bitset(page_list_wired, TRUE, VM_PAGE_GET_PHYS_PAGE(m)); } - // machine dependent adjustments - hibernate_page_list_setall_machine(page_list, page_list_wired, &pages); + if (preflight == FALSE && discard_all == TRUE) { + KDBG(IOKDBG_CODE(DBG_HIBERNATE, 12) | DBG_FUNC_START); - hibernate_stats.cd_count_wire = count_wire; - hibernate_stats.cd_discarded = count_discard_active + count_discard_inactive + count_discard_purgeable + count_discard_speculative + count_discard_cleaned; + HIBLOG("hibernate_teardown started\n"); + count_discard_vm_struct_pages = hibernate_teardown_vm_structs(page_list, page_list_wired); + HIBLOG("hibernate_teardown completed - discarded %d\n", count_discard_vm_struct_pages); - clock_get_uptime(&end); - absolutetime_to_nanoseconds(end - start, &nsec); - HIBLOG("hibernate_page_list_setall time: %qd ms\n", nsec / 1000000ULL); + pages -= count_discard_vm_struct_pages; + count_wire -= count_discard_vm_struct_pages; - HIBLOG("pages %d, wire %d, act %d, inact %d, cleaned %d spec %d, zf %d, throt %d, could discard act %d inact %d purgeable %d spec %d cleaned %d\n", - pages, count_wire, count_active, count_inactive, count_cleaned, count_speculative, count_zf, count_throttled, - count_discard_active, count_discard_inactive, count_discard_purgeable, count_discard_speculative, count_discard_cleaned); + hibernate_stats.cd_vm_struct_pages_unneeded = count_discard_vm_struct_pages; - *pagesOut = pages - count_discard_active - count_discard_inactive - count_discard_purgeable - count_discard_speculative - count_discard_cleaned; + KDBG(IOKDBG_CODE(DBG_HIBERNATE, 12) | DBG_FUNC_END); + } -#if DEBUG - if (vm_page_local_q) { - for (i = 0; i < vm_page_local_q_count; i++) { + if (!preflight) { + // pull wired from hibernate_bitmap + bitmap = &page_list->bank_bitmap[0]; + bitmap_wired = &page_list_wired->bank_bitmap[0]; + for (bank = 0; bank < page_list->bank_count; bank++) + { + for (i = 0; i < bitmap->bitmapwords; i++) + bitmap->bitmap[i] = bitmap->bitmap[i] | ~bitmap_wired->bitmap[i]; + bitmap = (hibernate_bitmap_t *) &bitmap->bitmap [bitmap->bitmapwords]; + bitmap_wired = (hibernate_bitmap_t *) &bitmap_wired->bitmap[bitmap_wired->bitmapwords]; + } + } + + // machine dependent adjustments + hibernate_page_list_setall_machine(page_list, page_list_wired, preflight, &pages); + + if (!preflight) { + hibernate_stats.cd_count_wire = count_wire; + hibernate_stats.cd_discarded = count_discard_active + count_discard_inactive + count_discard_purgeable + + count_discard_speculative + count_discard_cleaned + count_discard_vm_struct_pages; + } + + clock_get_uptime(&end); + absolutetime_to_nanoseconds(end - start, &nsec); + HIBLOG("hibernate_page_list_setall time: %qd ms\n", nsec / 1000000ULL); + + HIBLOG("pages %d, wire %d, act %d, inact %d, cleaned %d spec %d, zf %d, throt %d, compr %d, xpmapped %d\n %s discard act %d inact %d purgeable %d spec %d cleaned %d\n", + pages, count_wire, count_active, count_inactive, count_cleaned, count_speculative, count_anonymous, count_throttled, count_compressor, hibernate_stats.cd_found_xpmapped, + discard_all ? "did" : "could", + count_discard_active, count_discard_inactive, count_discard_purgeable, count_discard_speculative, count_discard_cleaned); + + if (hibernate_stats.cd_skipped_xpmapped) + HIBLOG("WARNING: hibernate_page_list_setall skipped %d xpmapped pages\n", hibernate_stats.cd_skipped_xpmapped); + + *pagesOut = pages - count_discard_active - count_discard_inactive - count_discard_purgeable - count_discard_speculative - count_discard_cleaned; + + if (preflight && will_discard) *pagesOut -= count_compressor + count_throttled + count_anonymous + count_inactive + count_cleaned + count_speculative + count_active; + +#if MACH_ASSERT || DEBUG + if (!preflight) + { + if (vm_page_local_q) { + for (i = 0; i < vm_page_local_q_count; i++) { struct vpl *lq; lq = &vm_page_local_q[i].vpl_un.vpl; VPL_UNLOCK(&lq->vpl_lock); } } vm_page_unlock_queues(); -#endif /* DEBUG */ + } +#endif /* MACH_ASSERT || DEBUG */ + + if (preflight) { + lck_mtx_unlock(&vm_page_queue_free_lock); + vm_page_unlock_queues(); + vm_object_unlock(compressor_object); + } KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 8) | DBG_FUNC_END, count_wire, *pagesOut, 0, 0, 0); } @@ -5351,7 +7179,8 @@ hibernate_page_list_discard(hibernate_page_list_t * page_list) uint32_t count_discard_cleaned = 0; uint32_t count_discard_speculative = 0; -#if DEBUG + +#if MACH_ASSERT || DEBUG vm_page_lock_queues(); if (vm_page_local_q) { for (i = 0; i < vm_page_local_q_count; i++) { @@ -5360,15 +7189,17 @@ hibernate_page_list_discard(hibernate_page_list_t * page_list) VPL_LOCK(&lq->vpl_lock); } } -#endif /* DEBUG */ +#endif /* MACH_ASSERT || DEBUG */ clock_get_uptime(&start); - m = (vm_page_t) queue_first(&vm_page_queue_anonymous); - while (m && !queue_end(&vm_page_queue_anonymous, (queue_entry_t)m)) + m = (vm_page_t) vm_page_queue_first(&vm_page_queue_anonymous); + while (m && !vm_page_queue_end(&vm_page_queue_anonymous, (vm_page_queue_entry_t)m)) { - next = (vm_page_t) m->pageq.next; - if (hibernate_page_bittst(page_list, m->phys_page)) + assert(m->vm_page_q_state == VM_PAGE_ON_INACTIVE_INTERNAL_Q); + + next = (vm_page_t) VM_PAGE_UNPACK_PTR(m->pageq.next); + if (hibernate_page_bittst(page_list, VM_PAGE_GET_PHYS_PAGE(m))) { if (m->dirty) count_discard_purgeable++; @@ -5381,11 +7212,13 @@ hibernate_page_list_discard(hibernate_page_list_t * page_list) for( i = 0; i <= VM_PAGE_MAX_SPECULATIVE_AGE_Q; i++ ) { - m = (vm_page_t) queue_first(&vm_page_queue_speculative[i].age_q); - while (m && !queue_end(&vm_page_queue_speculative[i].age_q, (queue_entry_t)m)) + m = (vm_page_t) vm_page_queue_first(&vm_page_queue_speculative[i].age_q); + while (m && !vm_page_queue_end(&vm_page_queue_speculative[i].age_q, (vm_page_queue_entry_t)m)) { - next = (vm_page_t) m->pageq.next; - if (hibernate_page_bittst(page_list, m->phys_page)) + assert(m->vm_page_q_state == VM_PAGE_ON_SPECULATIVE_Q); + + next = (vm_page_t) VM_PAGE_UNPACK_PTR(m->pageq.next); + if (hibernate_page_bittst(page_list, VM_PAGE_GET_PHYS_PAGE(m))) { count_discard_speculative++; hibernate_discard_page(m); @@ -5394,11 +7227,13 @@ hibernate_page_list_discard(hibernate_page_list_t * page_list) } } - m = (vm_page_t) queue_first(&vm_page_queue_inactive); - while (m && !queue_end(&vm_page_queue_inactive, (queue_entry_t)m)) + m = (vm_page_t) vm_page_queue_first(&vm_page_queue_inactive); + while (m && !vm_page_queue_end(&vm_page_queue_inactive, (vm_page_queue_entry_t)m)) { - next = (vm_page_t) m->pageq.next; - if (hibernate_page_bittst(page_list, m->phys_page)) + assert(m->vm_page_q_state == VM_PAGE_ON_INACTIVE_EXTERNAL_Q); + + next = (vm_page_t) VM_PAGE_UNPACK_PTR(m->pageq.next); + if (hibernate_page_bittst(page_list, VM_PAGE_GET_PHYS_PAGE(m))) { if (m->dirty) count_discard_purgeable++; @@ -5408,12 +7243,15 @@ hibernate_page_list_discard(hibernate_page_list_t * page_list) } m = next; } + /* XXX FBDP TODO: secluded queue */ - m = (vm_page_t) queue_first(&vm_page_queue_active); - while (m && !queue_end(&vm_page_queue_active, (queue_entry_t)m)) + m = (vm_page_t) vm_page_queue_first(&vm_page_queue_active); + while (m && !vm_page_queue_end(&vm_page_queue_active, (vm_page_queue_entry_t)m)) { - next = (vm_page_t) m->pageq.next; - if (hibernate_page_bittst(page_list, m->phys_page)) + assert(m->vm_page_q_state == VM_PAGE_ON_ACTIVE_Q); + + next = (vm_page_t) VM_PAGE_UNPACK_PTR(m->pageq.next); + if (hibernate_page_bittst(page_list, VM_PAGE_GET_PHYS_PAGE(m))) { if (m->dirty) count_discard_purgeable++; @@ -5424,11 +7262,13 @@ hibernate_page_list_discard(hibernate_page_list_t * page_list) m = next; } - m = (vm_page_t) queue_first(&vm_page_queue_cleaned); - while (m && !queue_end(&vm_page_queue_cleaned, (queue_entry_t)m)) + m = (vm_page_t) vm_page_queue_first(&vm_page_queue_cleaned); + while (m && !vm_page_queue_end(&vm_page_queue_cleaned, (vm_page_queue_entry_t)m)) { - next = (vm_page_t) m->pageq.next; - if (hibernate_page_bittst(page_list, m->phys_page)) + assert(m->vm_page_q_state == VM_PAGE_ON_INACTIVE_CLEANED_Q); + + next = (vm_page_t) VM_PAGE_UNPACK_PTR(m->pageq.next); + if (hibernate_page_bittst(page_list, VM_PAGE_GET_PHYS_PAGE(m))) { if (m->dirty) count_discard_purgeable++; @@ -5439,7 +7279,7 @@ hibernate_page_list_discard(hibernate_page_list_t * page_list) m = next; } -#if DEBUG +#if MACH_ASSERT || DEBUG if (vm_page_local_q) { for (i = 0; i < vm_page_local_q_count; i++) { struct vpl *lq; @@ -5448,7 +7288,7 @@ hibernate_page_list_discard(hibernate_page_list_t * page_list) } } vm_page_unlock_queues(); -#endif /* DEBUG */ +#endif /* MACH_ASSERT || DEBUG */ clock_get_uptime(&end); absolutetime_to_nanoseconds(end - start, &nsec); @@ -5457,6 +7297,373 @@ hibernate_page_list_discard(hibernate_page_list_t * page_list) count_discard_active, count_discard_inactive, count_discard_purgeable, count_discard_speculative, count_discard_cleaned); } +boolean_t hibernate_paddr_map_inited = FALSE; +unsigned int hibernate_teardown_last_valid_compact_indx = -1; +vm_page_t hibernate_rebuild_hash_list = NULL; + +unsigned int hibernate_teardown_found_tabled_pages = 0; +unsigned int hibernate_teardown_found_created_pages = 0; +unsigned int hibernate_teardown_found_free_pages = 0; +unsigned int hibernate_teardown_vm_page_free_count; + + +struct ppnum_mapping { + struct ppnum_mapping *ppnm_next; + ppnum_t ppnm_base_paddr; + unsigned int ppnm_sindx; + unsigned int ppnm_eindx; +}; + +struct ppnum_mapping *ppnm_head; +struct ppnum_mapping *ppnm_last_found = NULL; + + +void +hibernate_create_paddr_map() +{ + unsigned int i; + ppnum_t next_ppnum_in_run = 0; + struct ppnum_mapping *ppnm = NULL; + + if (hibernate_paddr_map_inited == FALSE) { + + for (i = 0; i < vm_pages_count; i++) { + + if (ppnm) + ppnm->ppnm_eindx = i; + + if (ppnm == NULL || VM_PAGE_GET_PHYS_PAGE(&vm_pages[i]) != next_ppnum_in_run) { + + ppnm = kalloc(sizeof(struct ppnum_mapping)); + + ppnm->ppnm_next = ppnm_head; + ppnm_head = ppnm; + + ppnm->ppnm_sindx = i; + ppnm->ppnm_base_paddr = VM_PAGE_GET_PHYS_PAGE(&vm_pages[i]); + } + next_ppnum_in_run = VM_PAGE_GET_PHYS_PAGE(&vm_pages[i]) + 1; + } + ppnm->ppnm_eindx++; + + hibernate_paddr_map_inited = TRUE; + } +} + +ppnum_t +hibernate_lookup_paddr(unsigned int indx) +{ + struct ppnum_mapping *ppnm = NULL; + + ppnm = ppnm_last_found; + + if (ppnm) { + if (indx >= ppnm->ppnm_sindx && indx < ppnm->ppnm_eindx) + goto done; + } + for (ppnm = ppnm_head; ppnm; ppnm = ppnm->ppnm_next) { + + if (indx >= ppnm->ppnm_sindx && indx < ppnm->ppnm_eindx) { + ppnm_last_found = ppnm; + break; + } + } + if (ppnm == NULL) + panic("hibernate_lookup_paddr of %d failed\n", indx); +done: + return (ppnm->ppnm_base_paddr + (indx - ppnm->ppnm_sindx)); +} + + +uint32_t +hibernate_mark_as_unneeded(addr64_t saddr, addr64_t eaddr, hibernate_page_list_t *page_list, hibernate_page_list_t *page_list_wired) +{ + addr64_t saddr_aligned; + addr64_t eaddr_aligned; + addr64_t addr; + ppnum_t paddr; + unsigned int mark_as_unneeded_pages = 0; + + saddr_aligned = (saddr + PAGE_MASK_64) & ~PAGE_MASK_64; + eaddr_aligned = eaddr & ~PAGE_MASK_64; + + for (addr = saddr_aligned; addr < eaddr_aligned; addr += PAGE_SIZE_64) { + + paddr = pmap_find_phys(kernel_pmap, addr); + + assert(paddr); + + hibernate_page_bitset(page_list, TRUE, paddr); + hibernate_page_bitset(page_list_wired, TRUE, paddr); + + mark_as_unneeded_pages++; + } + return (mark_as_unneeded_pages); +} + + +void +hibernate_hash_insert_page(vm_page_t mem) +{ + vm_page_bucket_t *bucket; + int hash_id; + vm_object_t m_object; + + m_object = VM_PAGE_OBJECT(mem); + + assert(mem->hashed); + assert(m_object); + assert(mem->offset != (vm_object_offset_t) -1); + + /* + * Insert it into the object_object/offset hash table + */ + hash_id = vm_page_hash(m_object, mem->offset); + bucket = &vm_page_buckets[hash_id]; + + mem->next_m = bucket->page_list; + bucket->page_list = VM_PAGE_PACK_PTR(mem); +} + + +void +hibernate_free_range(int sindx, int eindx) +{ + vm_page_t mem; + unsigned int color; + + while (sindx < eindx) { + mem = &vm_pages[sindx]; + + vm_page_init(mem, hibernate_lookup_paddr(sindx), FALSE); + + mem->lopage = FALSE; + mem->vm_page_q_state = VM_PAGE_ON_FREE_Q; + + color = VM_PAGE_GET_COLOR(mem); +#if defined(__x86_64__) + vm_page_queue_enter_clump(&vm_page_queue_free[color].qhead, + mem, + vm_page_t, + pageq); +#else + vm_page_queue_enter(&vm_page_queue_free[color].qhead, + mem, + vm_page_t, + pageq); +#endif + vm_page_free_count++; + + sindx++; + } +} + + +extern void hibernate_rebuild_pmap_structs(void); + +void +hibernate_rebuild_vm_structs(void) +{ + int i, cindx, sindx, eindx; + vm_page_t mem, tmem, mem_next; + AbsoluteTime startTime, endTime; + uint64_t nsec; + + if (hibernate_rebuild_needed == FALSE) + return; + + KDBG(IOKDBG_CODE(DBG_HIBERNATE, 13) | DBG_FUNC_START); + HIBLOG("hibernate_rebuild started\n"); + + clock_get_uptime(&startTime); + + hibernate_rebuild_pmap_structs(); + + bzero(&vm_page_buckets[0], vm_page_bucket_count * sizeof(vm_page_bucket_t)); + eindx = vm_pages_count; + + /* + * Mark all the vm_pages[] that have not been initialized yet as being + * transient. This is needed to ensure that buddy page search is corrrect. + * Without this random data in these vm_pages[] can trip the buddy search + */ + for (i = hibernate_teardown_last_valid_compact_indx+1; i < eindx; ++i) + vm_pages[i].vm_page_q_state = VM_PAGE_NOT_ON_Q; + + for (cindx = hibernate_teardown_last_valid_compact_indx; cindx >= 0; cindx--) { + + mem = &vm_pages[cindx]; + assert(mem->vm_page_q_state != VM_PAGE_ON_FREE_Q); + /* + * hibernate_teardown_vm_structs leaves the location where + * this vm_page_t must be located in "next". + */ + tmem = (vm_page_t)(VM_PAGE_UNPACK_PTR(mem->next_m)); + mem->next_m = VM_PAGE_PACK_PTR(NULL); + + sindx = (int)(tmem - &vm_pages[0]); + + if (mem != tmem) { + /* + * this vm_page_t was moved by hibernate_teardown_vm_structs, + * so move it back to its real location + */ + *tmem = *mem; + mem = tmem; + } + if (mem->hashed) + hibernate_hash_insert_page(mem); + /* + * the 'hole' between this vm_page_t and the previous + * vm_page_t we moved needs to be initialized as + * a range of free vm_page_t's + */ + hibernate_free_range(sindx + 1, eindx); + + eindx = sindx; + } + if (sindx) + hibernate_free_range(0, sindx); + + assert(vm_page_free_count == hibernate_teardown_vm_page_free_count); + + /* + * process the list of vm_page_t's that were entered in the hash, + * but were not located in the vm_pages arrary... these are + * vm_page_t's that were created on the fly (i.e. fictitious) + */ + for (mem = hibernate_rebuild_hash_list; mem; mem = mem_next) { + mem_next = (vm_page_t)(VM_PAGE_UNPACK_PTR(mem->next_m)); + + mem->next_m = 0; + hibernate_hash_insert_page(mem); + } + hibernate_rebuild_hash_list = NULL; + + clock_get_uptime(&endTime); + SUB_ABSOLUTETIME(&endTime, &startTime); + absolutetime_to_nanoseconds(endTime, &nsec); + + HIBLOG("hibernate_rebuild completed - took %qd msecs\n", nsec / 1000000ULL); + + hibernate_rebuild_needed = FALSE; + + KDBG(IOKDBG_CODE(DBG_HIBERNATE, 13) | DBG_FUNC_END); +} + + +extern void hibernate_teardown_pmap_structs(addr64_t *, addr64_t *); + +uint32_t +hibernate_teardown_vm_structs(hibernate_page_list_t *page_list, hibernate_page_list_t *page_list_wired) +{ + unsigned int i; + unsigned int compact_target_indx; + vm_page_t mem, mem_next; + vm_page_bucket_t *bucket; + unsigned int mark_as_unneeded_pages = 0; + unsigned int unneeded_vm_page_bucket_pages = 0; + unsigned int unneeded_vm_pages_pages = 0; + unsigned int unneeded_pmap_pages = 0; + addr64_t start_of_unneeded = 0; + addr64_t end_of_unneeded = 0; + + + if (hibernate_should_abort()) + return (0); + + hibernate_rebuild_needed = TRUE; + + HIBLOG("hibernate_teardown: wired_pages %d, free_pages %d, active_pages %d, inactive_pages %d, speculative_pages %d, cleaned_pages %d, compressor_pages %d\n", + vm_page_wire_count, vm_page_free_count, vm_page_active_count, vm_page_inactive_count, vm_page_speculative_count, + vm_page_cleaned_count, compressor_object->resident_page_count); + + for (i = 0; i < vm_page_bucket_count; i++) { + + bucket = &vm_page_buckets[i]; + + for (mem = (vm_page_t)(VM_PAGE_UNPACK_PTR(bucket->page_list)); mem != VM_PAGE_NULL; mem = mem_next) { + assert(mem->hashed); + + mem_next = (vm_page_t)(VM_PAGE_UNPACK_PTR(mem->next_m)); + + if (mem < &vm_pages[0] || mem >= &vm_pages[vm_pages_count]) { + mem->next_m = VM_PAGE_PACK_PTR(hibernate_rebuild_hash_list); + hibernate_rebuild_hash_list = mem; + } + } + } + unneeded_vm_page_bucket_pages = hibernate_mark_as_unneeded((addr64_t)&vm_page_buckets[0], (addr64_t)&vm_page_buckets[vm_page_bucket_count], page_list, page_list_wired); + mark_as_unneeded_pages += unneeded_vm_page_bucket_pages; + + hibernate_teardown_vm_page_free_count = vm_page_free_count; + + compact_target_indx = 0; + + for (i = 0; i < vm_pages_count; i++) { + + mem = &vm_pages[i]; + + if (mem->vm_page_q_state == VM_PAGE_ON_FREE_Q) { + unsigned int color; + + assert(mem->busy); + assert(!mem->lopage); + + color = VM_PAGE_GET_COLOR(mem); + + vm_page_queue_remove(&vm_page_queue_free[color].qhead, + mem, + vm_page_t, + pageq); + + VM_PAGE_ZERO_PAGEQ_ENTRY(mem); + + vm_page_free_count--; + + hibernate_teardown_found_free_pages++; + + if (vm_pages[compact_target_indx].vm_page_q_state != VM_PAGE_ON_FREE_Q) + compact_target_indx = i; + } else { + /* + * record this vm_page_t's original location + * we need this even if it doesn't get moved + * as an indicator to the rebuild function that + * we don't have to move it + */ + mem->next_m = VM_PAGE_PACK_PTR(mem); + + if (vm_pages[compact_target_indx].vm_page_q_state == VM_PAGE_ON_FREE_Q) { + /* + * we've got a hole to fill, so + * move this vm_page_t to it's new home + */ + vm_pages[compact_target_indx] = *mem; + mem->vm_page_q_state = VM_PAGE_ON_FREE_Q; + + hibernate_teardown_last_valid_compact_indx = compact_target_indx; + compact_target_indx++; + } else + hibernate_teardown_last_valid_compact_indx = i; + } + } + unneeded_vm_pages_pages = hibernate_mark_as_unneeded((addr64_t)&vm_pages[hibernate_teardown_last_valid_compact_indx+1], + (addr64_t)&vm_pages[vm_pages_count-1], page_list, page_list_wired); + mark_as_unneeded_pages += unneeded_vm_pages_pages; + + hibernate_teardown_pmap_structs(&start_of_unneeded, &end_of_unneeded); + + if (start_of_unneeded) { + unneeded_pmap_pages = hibernate_mark_as_unneeded(start_of_unneeded, end_of_unneeded, page_list, page_list_wired); + mark_as_unneeded_pages += unneeded_pmap_pages; + } + HIBLOG("hibernate_teardown: mark_as_unneeded_pages %d, %d, %d\n", unneeded_vm_page_bucket_pages, unneeded_vm_pages_pages, unneeded_pmap_pages); + + return (mark_as_unneeded_pages); +} + + #endif /* HIBERNATION */ /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ @@ -5497,7 +7704,9 @@ vm_page_info( bucket_lock = &vm_page_bucket_locks[i / BUCKETS_PER_LOCK]; lck_spin_lock(bucket_lock); - for (m = bucket->pages; m != VM_PAGE_NULL; m = m->next) + for (m = (vm_page_t)(VM_PAGE_UNPACK_PTR(bucket->page_list)); + m != VM_PAGE_NULL; + m = (vm_page_t)(VM_PAGE_UNPACK_PTR(m->next_m))) bucket_count++; lck_spin_unlock(bucket_lock); @@ -5509,3 +7718,1258 @@ vm_page_info( return vm_page_bucket_count; } #endif /* MACH_VM_DEBUG */ + +#if VM_PAGE_BUCKETS_CHECK +void +vm_page_buckets_check(void) +{ + unsigned int i; + vm_page_t p; + unsigned int p_hash; + vm_page_bucket_t *bucket; + lck_spin_t *bucket_lock; + + if (!vm_page_buckets_check_ready) { + return; + } + +#if HIBERNATION + if (hibernate_rebuild_needed || + hibernate_rebuild_hash_list) { + panic("BUCKET_CHECK: hibernation in progress: " + "rebuild_needed=%d rebuild_hash_list=%p\n", + hibernate_rebuild_needed, + hibernate_rebuild_hash_list); + } +#endif /* HIBERNATION */ + +#if VM_PAGE_FAKE_BUCKETS + char *cp; + for (cp = (char *) vm_page_fake_buckets_start; + cp < (char *) vm_page_fake_buckets_end; + cp++) { + if (*cp != 0x5a) { + panic("BUCKET_CHECK: corruption at %p in fake buckets " + "[0x%llx:0x%llx]\n", + cp, + (uint64_t) vm_page_fake_buckets_start, + (uint64_t) vm_page_fake_buckets_end); + } + } +#endif /* VM_PAGE_FAKE_BUCKETS */ + + for (i = 0; i < vm_page_bucket_count; i++) { + vm_object_t p_object; + + bucket = &vm_page_buckets[i]; + if (!bucket->page_list) { + continue; + } + + bucket_lock = &vm_page_bucket_locks[i / BUCKETS_PER_LOCK]; + lck_spin_lock(bucket_lock); + p = (vm_page_t)(VM_PAGE_UNPACK_PTR(bucket->page_list)); + + while (p != VM_PAGE_NULL) { + p_object = VM_PAGE_OBJECT(p); + + if (!p->hashed) { + panic("BUCKET_CHECK: page %p (%p,0x%llx) " + "hash %d in bucket %d at %p " + "is not hashed\n", + p, p_object, p->offset, + p_hash, i, bucket); + } + p_hash = vm_page_hash(p_object, p->offset); + if (p_hash != i) { + panic("BUCKET_CHECK: corruption in bucket %d " + "at %p: page %p object %p offset 0x%llx " + "hash %d\n", + i, bucket, p, p_object, p->offset, + p_hash); + } + p = (vm_page_t)(VM_PAGE_UNPACK_PTR(p->next_m)); + } + lck_spin_unlock(bucket_lock); + } + +// printf("BUCKET_CHECK: checked buckets\n"); +} +#endif /* VM_PAGE_BUCKETS_CHECK */ + +/* + * 'vm_fault_enter' will place newly created pages (zero-fill and COW) onto the + * local queues if they exist... its the only spot in the system where we add pages + * to those queues... once on those queues, those pages can only move to one of the + * global page queues or the free queues... they NEVER move from local q to local q. + * the 'local' state is stable when vm_page_queues_remove is called since we're behind + * the global vm_page_queue_lock at this point... we still need to take the local lock + * in case this operation is being run on a different CPU then the local queue's identity, + * but we don't have to worry about the page moving to a global queue or becoming wired + * while we're grabbing the local lock since those operations would require the global + * vm_page_queue_lock to be held, and we already own it. + * + * this is why its safe to utilze the wire_count field in the vm_page_t as the local_id... + * 'wired' and local are ALWAYS mutually exclusive conditions. + */ + +#if CONFIG_BACKGROUND_QUEUE +void +vm_page_queues_remove(vm_page_t mem, boolean_t remove_from_backgroundq) +#else +void +vm_page_queues_remove(vm_page_t mem, boolean_t __unused remove_from_backgroundq) +#endif +{ + boolean_t was_pageable = TRUE; + vm_object_t m_object; + + m_object = VM_PAGE_OBJECT(mem); + + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); + + if (mem->vm_page_q_state == VM_PAGE_NOT_ON_Q) + { + assert(mem->pageq.next == 0 && mem->pageq.prev == 0); +#if CONFIG_BACKGROUND_QUEUE + if (remove_from_backgroundq == TRUE) { + vm_page_remove_from_backgroundq(mem); + } + if (mem->vm_page_on_backgroundq) { + assert(mem->vm_page_backgroundq.next != 0); + assert(mem->vm_page_backgroundq.prev != 0); + } else { + assert(mem->vm_page_backgroundq.next == 0); + assert(mem->vm_page_backgroundq.prev == 0); + } +#endif /* CONFIG_BACKGROUND_QUEUE */ + return; + } + + if (mem->vm_page_q_state == VM_PAGE_USED_BY_COMPRESSOR) + { + assert(mem->pageq.next == 0 && mem->pageq.prev == 0); +#if CONFIG_BACKGROUND_QUEUE + assert(mem->vm_page_backgroundq.next == 0 && + mem->vm_page_backgroundq.prev == 0 && + mem->vm_page_on_backgroundq == FALSE); +#endif + return; + } + if (mem->vm_page_q_state == VM_PAGE_IS_WIRED) { + /* + * might put these guys on a list for debugging purposes + * if we do, we'll need to remove this assert + */ + assert(mem->pageq.next == 0 && mem->pageq.prev == 0); +#if CONFIG_BACKGROUND_QUEUE + assert(mem->vm_page_backgroundq.next == 0 && + mem->vm_page_backgroundq.prev == 0 && + mem->vm_page_on_backgroundq == FALSE); +#endif + return; + } + + assert(m_object != compressor_object); + assert(m_object != kernel_object); + assert(m_object != vm_submap_object); + assert(!mem->fictitious); + + switch(mem->vm_page_q_state) { + + case VM_PAGE_ON_ACTIVE_LOCAL_Q: + { + struct vpl *lq; + + lq = &vm_page_local_q[mem->local_id].vpl_un.vpl; + VPL_LOCK(&lq->vpl_lock); + vm_page_queue_remove(&lq->vpl_queue, + mem, vm_page_t, pageq); + mem->local_id = 0; + lq->vpl_count--; + if (m_object->internal) { + lq->vpl_internal_count--; + } else { + lq->vpl_external_count--; + } + VPL_UNLOCK(&lq->vpl_lock); + was_pageable = FALSE; + break; + } + case VM_PAGE_ON_ACTIVE_Q: + { + vm_page_queue_remove(&vm_page_queue_active, + mem, vm_page_t, pageq); + vm_page_active_count--; + break; + } + + case VM_PAGE_ON_INACTIVE_INTERNAL_Q: + { + assert(m_object->internal == TRUE); + + vm_page_inactive_count--; + vm_page_queue_remove(&vm_page_queue_anonymous, + mem, vm_page_t, pageq); + vm_page_anonymous_count--; + vm_purgeable_q_advance_all(); + break; + } + + case VM_PAGE_ON_INACTIVE_EXTERNAL_Q: + { + assert(m_object->internal == FALSE); + + vm_page_inactive_count--; + vm_page_queue_remove(&vm_page_queue_inactive, + mem, vm_page_t, pageq); + vm_purgeable_q_advance_all(); + break; + } + + case VM_PAGE_ON_INACTIVE_CLEANED_Q: + { + assert(m_object->internal == FALSE); + + vm_page_inactive_count--; + vm_page_queue_remove(&vm_page_queue_cleaned, + mem, vm_page_t, pageq); + vm_page_cleaned_count--; + break; + } + + case VM_PAGE_ON_THROTTLED_Q: + { + assert(m_object->internal == TRUE); + + vm_page_queue_remove(&vm_page_queue_throttled, + mem, vm_page_t, pageq); + vm_page_throttled_count--; + was_pageable = FALSE; + break; + } + + case VM_PAGE_ON_SPECULATIVE_Q: + { + assert(m_object->internal == FALSE); + + vm_page_remque(&mem->pageq); + vm_page_speculative_count--; + break; + } + +#if CONFIG_SECLUDED_MEMORY + case VM_PAGE_ON_SECLUDED_Q: + { + vm_page_queue_remove(&vm_page_queue_secluded, + mem, vm_page_t, pageq); + vm_page_secluded_count--; + if (m_object == VM_OBJECT_NULL) { + vm_page_secluded_count_free--; + was_pageable = FALSE; + } else { + assert(!m_object->internal); + vm_page_secluded_count_inuse--; + was_pageable = FALSE; +// was_pageable = TRUE; + } + break; + } +#endif /* CONFIG_SECLUDED_MEMORY */ + + default: + { + /* + * if (mem->vm_page_q_state == VM_PAGE_ON_PAGEOUT_Q) + * NOTE: vm_page_queues_remove does not deal with removing pages from the pageout queue... + * the caller is responsible for determing if the page is on that queue, and if so, must + * either first remove it (it needs both the page queues lock and the object lock to do + * this via vm_pageout_steal_laundry), or avoid the call to vm_page_queues_remove + * + * we also don't expect to encounter VM_PAGE_ON_FREE_Q, VM_PAGE_ON_FREE_LOCAL_Q, VM_PAGE_ON_FREE_LOPAGE_Q + * or any of the undefined states + */ + panic("vm_page_queues_remove - bad page q_state (%p, %d)\n", mem, mem->vm_page_q_state); + break; + } + + } + VM_PAGE_ZERO_PAGEQ_ENTRY(mem); + mem->vm_page_q_state = VM_PAGE_NOT_ON_Q; + +#if CONFIG_BACKGROUND_QUEUE + if (remove_from_backgroundq == TRUE) + vm_page_remove_from_backgroundq(mem); +#endif + if (was_pageable) { + if (m_object->internal) { + vm_page_pageable_internal_count--; + } else { + vm_page_pageable_external_count--; + } + } +} + +void +vm_page_remove_internal(vm_page_t page) +{ + vm_object_t __object = VM_PAGE_OBJECT(page); + if (page == __object->memq_hint) { + vm_page_t __new_hint; + vm_page_queue_entry_t __qe; + __qe = (vm_page_queue_entry_t)vm_page_queue_next(&page->listq); + if (vm_page_queue_end(&__object->memq, __qe)) { + __qe = (vm_page_queue_entry_t)vm_page_queue_prev(&page->listq); + if (vm_page_queue_end(&__object->memq, __qe)) { + __qe = NULL; + } + } + __new_hint = (vm_page_t)((uintptr_t) __qe); + __object->memq_hint = __new_hint; + } + vm_page_queue_remove(&__object->memq, page, vm_page_t, listq); +#if CONFIG_SECLUDED_MEMORY + if (__object->eligible_for_secluded) { + vm_page_secluded.eligible_for_secluded--; + } +#endif /* CONFIG_SECLUDED_MEMORY */ +} + +void +vm_page_enqueue_inactive(vm_page_t mem, boolean_t first) +{ + vm_object_t m_object; + + m_object = VM_PAGE_OBJECT(mem); + + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); + assert(!mem->fictitious); + assert(!mem->laundry); + assert(mem->vm_page_q_state == VM_PAGE_NOT_ON_Q); + vm_page_check_pageable_safe(mem); + + if (m_object->internal) { + mem->vm_page_q_state = VM_PAGE_ON_INACTIVE_INTERNAL_Q; + + if (first == TRUE) + vm_page_queue_enter_first(&vm_page_queue_anonymous, mem, vm_page_t, pageq); + else + vm_page_queue_enter(&vm_page_queue_anonymous, mem, vm_page_t, pageq); + + vm_page_anonymous_count++; + vm_page_pageable_internal_count++; + } else { + mem->vm_page_q_state = VM_PAGE_ON_INACTIVE_EXTERNAL_Q; + + if (first == TRUE) + vm_page_queue_enter_first(&vm_page_queue_inactive, mem, vm_page_t, pageq); + else + vm_page_queue_enter(&vm_page_queue_inactive, mem, vm_page_t, pageq); + + vm_page_pageable_external_count++; + } + vm_page_inactive_count++; + token_new_pagecount++; + +#if CONFIG_BACKGROUND_QUEUE + if (mem->vm_page_in_background) + vm_page_add_to_backgroundq(mem, FALSE); +#endif +} + +void +vm_page_enqueue_active(vm_page_t mem, boolean_t first) +{ + vm_object_t m_object; + + m_object = VM_PAGE_OBJECT(mem); + + LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED); + assert(!mem->fictitious); + assert(!mem->laundry); + assert(mem->vm_page_q_state == VM_PAGE_NOT_ON_Q); + vm_page_check_pageable_safe(mem); + + mem->vm_page_q_state = VM_PAGE_ON_ACTIVE_Q; + if (first == TRUE) + vm_page_queue_enter_first(&vm_page_queue_active, mem, vm_page_t, pageq); + else + vm_page_queue_enter(&vm_page_queue_active, mem, vm_page_t, pageq); + vm_page_active_count++; + + if (m_object->internal) { + vm_page_pageable_internal_count++; + } else { + vm_page_pageable_external_count++; + } + +#if CONFIG_BACKGROUND_QUEUE + if (mem->vm_page_in_background) + vm_page_add_to_backgroundq(mem, FALSE); +#endif +} + +/* + * Pages from special kernel objects shouldn't + * be placed on pageable queues. + */ +void +vm_page_check_pageable_safe(vm_page_t page) +{ + vm_object_t page_object; + + page_object = VM_PAGE_OBJECT(page); + + if (page_object == kernel_object) { + panic("vm_page_check_pageable_safe: trying to add page" \ + "from kernel object (%p) to pageable queue", kernel_object); + } + + if (page_object == compressor_object) { + panic("vm_page_check_pageable_safe: trying to add page" \ + "from compressor object (%p) to pageable queue", compressor_object); + } + + if (page_object == vm_submap_object) { + panic("vm_page_check_pageable_safe: trying to add page" \ + "from submap object (%p) to pageable queue", vm_submap_object); + } +} + +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * wired page diagnose + * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ + +#include + +#define KA_SIZE(namelen, subtotalscount) \ + (sizeof(struct vm_allocation_site) + (namelen) + 1 + ((subtotalscount) * sizeof(struct vm_allocation_total))) + +#define KA_NAME(alloc) \ + ((char *)(&(alloc)->subtotals[(alloc->subtotalscount)])) + +#define KA_NAME_LEN(alloc) \ + (VM_TAG_NAME_LEN_MAX & (alloc->flags >> VM_TAG_NAME_LEN_SHIFT)) + +vm_tag_t +vm_tag_bt(void) +{ + uintptr_t* frameptr; + uintptr_t* frameptr_next; + uintptr_t retaddr; + uintptr_t kstackb, kstackt; + const vm_allocation_site_t * site; + thread_t cthread; + kern_allocation_name_t name; + + cthread = current_thread(); + if (__improbable(cthread == NULL)) return VM_KERN_MEMORY_OSFMK; + + if ((name = thread_get_kernel_state(cthread)->allocation_name)) + { + if (!name->tag) vm_tag_alloc(name); + return name->tag; + } + + kstackb = cthread->kernel_stack; + kstackt = kstackb + kernel_stack_size; + + /* Load stack frame pointer (EBP on x86) into frameptr */ + frameptr = __builtin_frame_address(0); + site = NULL; + while (frameptr != NULL) + { + /* Verify thread stack bounds */ + if (((uintptr_t)(frameptr + 2) > kstackt) || ((uintptr_t)frameptr < kstackb)) break; + + /* Next frame pointer is pointed to by the previous one */ + frameptr_next = (uintptr_t*) *frameptr; + + /* Pull return address from one spot above the frame pointer */ + retaddr = *(frameptr + 1); + + + if ((retaddr < vm_kernel_stext) || (retaddr > vm_kernel_top)) + { + site = OSKextGetAllocationSiteForCaller(retaddr); + break; + } + frameptr = frameptr_next; + } + + return (site ? site->tag : VM_KERN_MEMORY_NONE); +} + +static uint64_t free_tag_bits[VM_MAX_TAG_VALUE/64]; + +void +vm_tag_alloc_locked(vm_allocation_site_t * site, vm_allocation_site_t ** releasesiteP) +{ + vm_tag_t tag; + uint64_t avail; + uint32_t idx; + vm_allocation_site_t * prev; + + if (site->tag) return; + + idx = 0; + while (TRUE) + { + avail = free_tag_bits[idx]; + if (avail) + { + tag = __builtin_clzll(avail); + avail &= ~(1ULL << (63 - tag)); + free_tag_bits[idx] = avail; + tag += (idx << 6); + break; + } + idx++; + if (idx >= ARRAY_COUNT(free_tag_bits)) + { + for (idx = 0; idx < ARRAY_COUNT(vm_allocation_sites); idx++) + { + prev = vm_allocation_sites[idx]; + if (!prev) continue; + if (!KA_NAME_LEN(prev)) continue; + if (!prev->tag) continue; + if (prev->total) continue; + if (1 != prev->refcount) continue; + + assert(idx == prev->tag); + tag = idx; + prev->tag = VM_KERN_MEMORY_NONE; + *releasesiteP = prev; + break; + } + if (idx >= ARRAY_COUNT(vm_allocation_sites)) + { + tag = VM_KERN_MEMORY_ANY; + } + break; + } + } + site->tag = tag; + + OSAddAtomic16(1, &site->refcount); + + if (VM_KERN_MEMORY_ANY != tag) vm_allocation_sites[tag] = site; + + if (tag > vm_allocation_tag_highest) vm_allocation_tag_highest = tag; +} + +static void +vm_tag_free_locked(vm_tag_t tag) +{ + uint64_t avail; + uint32_t idx; + uint64_t bit; + + if (VM_KERN_MEMORY_ANY == tag) return; + + idx = (tag >> 6); + avail = free_tag_bits[idx]; + tag &= 63; + bit = (1ULL << (63 - tag)); + assert(!(avail & bit)); + free_tag_bits[idx] = (avail | bit); +} + +static void +vm_tag_init(void) +{ + vm_tag_t tag; + for (tag = VM_KERN_MEMORY_FIRST_DYNAMIC; tag < VM_KERN_MEMORY_ANY; tag++) + { + vm_tag_free_locked(tag); + } + + for (tag = VM_KERN_MEMORY_ANY + 1; tag < VM_MAX_TAG_VALUE; tag++) + { + vm_tag_free_locked(tag); + } +} + +vm_tag_t +vm_tag_alloc(vm_allocation_site_t * site) +{ + vm_tag_t tag; + vm_allocation_site_t * releasesite; + + if (VM_TAG_BT & site->flags) + { + tag = vm_tag_bt(); + if (VM_KERN_MEMORY_NONE != tag) return (tag); + } + + if (!site->tag) + { + releasesite = NULL; + lck_spin_lock(&vm_allocation_sites_lock); + vm_tag_alloc_locked(site, &releasesite); + lck_spin_unlock(&vm_allocation_sites_lock); + if (releasesite) kern_allocation_name_release(releasesite); + } + + return (site->tag); +} + +void +vm_tag_update_size(vm_tag_t tag, int64_t delta) +{ + vm_allocation_site_t * allocation; + uint64_t prior; + + assert(VM_KERN_MEMORY_NONE != tag); + assert(tag < VM_MAX_TAG_VALUE); + + allocation = vm_allocation_sites[tag]; + assert(allocation); + + if (delta < 0) { + assertf(allocation->total >= ((uint64_t)-delta), "tag %d, site %p", tag, allocation); + } + prior = OSAddAtomic64(delta, &allocation->total); + +#if DEBUG || DEVELOPMENT + + uint64_t new, peak; + new = prior + delta; + do + { + peak = allocation->peak; + if (new <= peak) break; + } + while (!OSCompareAndSwap64(peak, new, &allocation->peak)); + +#endif /* DEBUG || DEVELOPMENT */ + + if (tag < VM_KERN_MEMORY_FIRST_DYNAMIC) return; + + if (!prior && !allocation->tag) vm_tag_alloc(allocation); +} + +void +kern_allocation_update_size(kern_allocation_name_t allocation, int64_t delta) +{ + uint64_t prior; + + if (delta < 0) { + assertf(allocation->total >= ((uint64_t)-delta), "name %p", allocation); + } + prior = OSAddAtomic64(delta, &allocation->total); + +#if DEBUG || DEVELOPMENT + + uint64_t new, peak; + new = prior + delta; + do + { + peak = allocation->peak; + if (new <= peak) break; + } + while (!OSCompareAndSwap64(peak, new, &allocation->peak)); + +#endif /* DEBUG || DEVELOPMENT */ + + if (!prior && !allocation->tag) vm_tag_alloc(allocation); +} + +#if VM_MAX_TAG_ZONES + +void +vm_allocation_zones_init(void) +{ + kern_return_t ret; + vm_offset_t addr; + vm_size_t size; + + size = VM_MAX_TAG_VALUE * sizeof(vm_allocation_zone_total_t **) + + 2 * VM_MAX_TAG_ZONES * sizeof(vm_allocation_zone_total_t); + + ret = kernel_memory_allocate(kernel_map, + &addr, round_page(size), 0, + KMA_ZERO, VM_KERN_MEMORY_DIAG); + assert(KERN_SUCCESS == ret); + + vm_allocation_zone_totals = (vm_allocation_zone_total_t **) addr; + addr += VM_MAX_TAG_VALUE * sizeof(vm_allocation_zone_total_t **); + + // prepopulate VM_KERN_MEMORY_DIAG & VM_KERN_MEMORY_KALLOC so allocations + // in vm_tag_update_zone_size() won't recurse + vm_allocation_zone_totals[VM_KERN_MEMORY_DIAG] = (vm_allocation_zone_total_t *) addr; + addr += VM_MAX_TAG_ZONES * sizeof(vm_allocation_zone_total_t); + vm_allocation_zone_totals[VM_KERN_MEMORY_KALLOC] = (vm_allocation_zone_total_t *) addr; +} + +void +vm_tag_will_update_zone(vm_tag_t tag, uint32_t zidx) +{ + vm_allocation_zone_total_t * zone; + + assert(VM_KERN_MEMORY_NONE != tag); + assert(tag < VM_MAX_TAG_VALUE); + + if (zidx >= VM_MAX_TAG_ZONES) return; + + zone = vm_allocation_zone_totals[tag]; + if (!zone) + { + zone = kalloc_tag(VM_MAX_TAG_ZONES * sizeof(*zone), VM_KERN_MEMORY_DIAG); + if (!zone) return; + bzero(zone, VM_MAX_TAG_ZONES * sizeof(*zone)); + if (!OSCompareAndSwapPtr(NULL, zone, &vm_allocation_zone_totals[tag])) + { + kfree(zone, VM_MAX_TAG_ZONES * sizeof(*zone)); + } + } +} + +void +vm_tag_update_zone_size(vm_tag_t tag, uint32_t zidx, int64_t delta, int64_t dwaste) +{ + vm_allocation_zone_total_t * zone; + uint32_t new; + + assert(VM_KERN_MEMORY_NONE != tag); + assert(tag < VM_MAX_TAG_VALUE); + + if (zidx >= VM_MAX_TAG_ZONES) return; + + zone = vm_allocation_zone_totals[tag]; + assert(zone); + zone += zidx; + + /* the zone is locked */ + if (delta < 0) + { + assertf(zone->total >= ((uint64_t)-delta), "zidx %d, tag %d, %p", zidx, tag, zone); + zone->total += delta; + } + else + { + zone->total += delta; + if (zone->total > zone->peak) zone->peak = zone->total; + if (dwaste) + { + new = zone->waste; + if (zone->wastediv < 65536) zone->wastediv++; + else new -= (new >> 16); + __assert_only bool ov = os_add_overflow(new, dwaste, &new); + assert(!ov); + zone->waste = new; + } + } +} + +#endif /* VM_MAX_TAG_ZONES */ + +void +kern_allocation_update_subtotal(kern_allocation_name_t allocation, uint32_t subtag, int64_t delta) +{ + kern_allocation_name_t other; + struct vm_allocation_total * total; + uint32_t subidx; + + subidx = 0; + assert(VM_KERN_MEMORY_NONE != subtag); + for (; subidx < allocation->subtotalscount; subidx++) + { + if (VM_KERN_MEMORY_NONE == allocation->subtotals[subidx].tag) + { + allocation->subtotals[subidx].tag = subtag; + break; + } + if (subtag == allocation->subtotals[subidx].tag) break; + } + assert(subidx < allocation->subtotalscount); + if (subidx >= allocation->subtotalscount) return; + + total = &allocation->subtotals[subidx]; + other = vm_allocation_sites[subtag]; + assert(other); + + if (delta < 0) + { + assertf(total->total >= ((uint64_t)-delta), "name %p", allocation); + OSAddAtomic64(delta, &total->total); + assertf(other->mapped >= ((uint64_t)-delta), "other %p", other); + OSAddAtomic64(delta, &other->mapped); + } + else + { + OSAddAtomic64(delta, &other->mapped); + OSAddAtomic64(delta, &total->total); + } +} + +const char * +kern_allocation_get_name(kern_allocation_name_t allocation) +{ + return (KA_NAME(allocation)); +} + +kern_allocation_name_t +kern_allocation_name_allocate(const char * name, uint32_t subtotalscount) +{ + uint32_t namelen; + + namelen = (uint32_t) strnlen(name, MACH_MEMORY_INFO_NAME_MAX_LEN - 1); + + kern_allocation_name_t allocation; + allocation = kalloc(KA_SIZE(namelen, subtotalscount)); + bzero(allocation, KA_SIZE(namelen, subtotalscount)); + + allocation->refcount = 1; + allocation->subtotalscount = subtotalscount; + allocation->flags = (namelen << VM_TAG_NAME_LEN_SHIFT); + strlcpy(KA_NAME(allocation), name, namelen + 1); + + return (allocation); +} + +void +kern_allocation_name_release(kern_allocation_name_t allocation) +{ + assert(allocation->refcount > 0); + if (1 == OSAddAtomic16(-1, &allocation->refcount)) + { + kfree(allocation, KA_SIZE(KA_NAME_LEN(allocation), allocation->subtotalscount)); + } +} + +vm_tag_t +kern_allocation_name_get_vm_tag(kern_allocation_name_t allocation) +{ + return (vm_tag_alloc(allocation)); +} + +static void +vm_page_count_object(mach_memory_info_t * info, unsigned int __unused num_info, vm_object_t object) +{ + if (!object->wired_page_count) return; + if (object != kernel_object) + { + assert(object->wire_tag < num_info); + info[object->wire_tag].size += ptoa_64(object->wired_page_count); + } +} + +typedef void (*vm_page_iterate_proc)(mach_memory_info_t * info, + unsigned int num_info, vm_object_t object); + +static void +vm_page_iterate_purgeable_objects(mach_memory_info_t * info, unsigned int num_info, + vm_page_iterate_proc proc, purgeable_q_t queue, + int group) +{ + vm_object_t object; + + for (object = (vm_object_t) queue_first(&queue->objq[group]); + !queue_end(&queue->objq[group], (queue_entry_t) object); + object = (vm_object_t) queue_next(&object->objq)) + { + proc(info, num_info, object); + } +} + +static void +vm_page_iterate_objects(mach_memory_info_t * info, unsigned int num_info, + vm_page_iterate_proc proc) +{ + purgeable_q_t volatile_q; + queue_head_t * nonvolatile_q; + vm_object_t object; + int group; + + lck_spin_lock(&vm_objects_wired_lock); + queue_iterate(&vm_objects_wired, + object, + vm_object_t, + objq) + { + proc(info, num_info, object); + } + lck_spin_unlock(&vm_objects_wired_lock); + + lck_mtx_lock(&vm_purgeable_queue_lock); + nonvolatile_q = &purgeable_nonvolatile_queue; + for (object = (vm_object_t) queue_first(nonvolatile_q); + !queue_end(nonvolatile_q, (queue_entry_t) object); + object = (vm_object_t) queue_next(&object->objq)) + { + proc(info, num_info, object); + } + + volatile_q = &purgeable_queues[PURGEABLE_Q_TYPE_OBSOLETE]; + vm_page_iterate_purgeable_objects(info, num_info, proc, volatile_q, 0); + + volatile_q = &purgeable_queues[PURGEABLE_Q_TYPE_FIFO]; + for (group = 0; group < NUM_VOLATILE_GROUPS; group++) + { + vm_page_iterate_purgeable_objects(info, num_info, proc, volatile_q, group); + } + + volatile_q = &purgeable_queues[PURGEABLE_Q_TYPE_LIFO]; + for (group = 0; group < NUM_VOLATILE_GROUPS; group++) + { + vm_page_iterate_purgeable_objects(info, num_info, proc, volatile_q, group); + } + lck_mtx_unlock(&vm_purgeable_queue_lock); +} + +static uint64_t +process_account(mach_memory_info_t * info, unsigned int num_info, uint64_t zones_collectable_bytes, boolean_t iterated) +{ + size_t namelen; + unsigned int idx, count, nextinfo; + vm_allocation_site_t * site; + lck_spin_lock(&vm_allocation_sites_lock); + + for (idx = 0; idx <= vm_allocation_tag_highest; idx++) + { + site = vm_allocation_sites[idx]; + if (!site) continue; + info[idx].mapped = site->mapped; + info[idx].tag = site->tag; + if (!iterated) + { + info[idx].size = site->total; +#if DEBUG || DEVELOPMENT + info[idx].peak = site->peak; +#endif /* DEBUG || DEVELOPMENT */ + } + else + { + if (!site->subtotalscount && (site->total != info[idx].size)) + { + printf("tag mismatch[%d] 0x%qx, iter 0x%qx\n", idx, site->total, info[idx].size); + info[idx].size = site->total; + } + } + } + + nextinfo = (vm_allocation_tag_highest + 1); + count = nextinfo; + if (count >= num_info) count = num_info; + + for (idx = 0; idx < count; idx++) + { + site = vm_allocation_sites[idx]; + if (!site) continue; + info[idx].flags |= VM_KERN_SITE_WIRED; + if (idx < VM_KERN_MEMORY_FIRST_DYNAMIC) + { + info[idx].site = idx; + info[idx].flags |= VM_KERN_SITE_TAG; + if (VM_KERN_MEMORY_ZONE == idx) + { + info[idx].flags |= VM_KERN_SITE_HIDE; + info[idx].flags &= ~VM_KERN_SITE_WIRED; + info[idx].collectable_bytes = zones_collectable_bytes; + } + } + else if ((namelen = (VM_TAG_NAME_LEN_MAX & (site->flags >> VM_TAG_NAME_LEN_SHIFT)))) + { + info[idx].site = 0; + info[idx].flags |= VM_KERN_SITE_NAMED; + if (namelen > sizeof(info[idx].name)) namelen = sizeof(info[idx].name); + strncpy(&info[idx].name[0], KA_NAME(site), namelen); + } + else if (VM_TAG_KMOD & site->flags) + { + info[idx].site = OSKextGetKmodIDForSite(site, NULL, 0); + info[idx].flags |= VM_KERN_SITE_KMOD; + } + else + { + info[idx].site = VM_KERNEL_UNSLIDE(site); + info[idx].flags |= VM_KERN_SITE_KERNEL; + } +#if VM_MAX_TAG_ZONES + vm_allocation_zone_total_t * zone; + unsigned int zidx; + vm_size_t elem_size; + + if (vm_allocation_zone_totals + && (zone = vm_allocation_zone_totals[idx]) + && (nextinfo < num_info)) + { + for (zidx = 0; zidx < VM_MAX_TAG_ZONES; zidx++) + { + if (!zone[zidx].peak) continue; + info[nextinfo] = info[idx]; + info[nextinfo].zone = zone_index_from_tag_index(zidx, &elem_size); + info[nextinfo].flags &= ~VM_KERN_SITE_WIRED; + info[nextinfo].flags |= VM_KERN_SITE_ZONE; + info[nextinfo].size = zone[zidx].total; + info[nextinfo].peak = zone[zidx].peak; + info[nextinfo].mapped = 0; + if (zone[zidx].wastediv) + { + info[nextinfo].collectable_bytes = ((zone[zidx].waste * zone[zidx].total / elem_size) / zone[zidx].wastediv); + } + nextinfo++; + } + } +#endif /* VM_MAX_TAG_ZONES */ + if (site->subtotalscount) + { + uint64_t mapped, mapcost, take; + uint32_t sub; + vm_tag_t alloctag; + + info[idx].size = site->total; + mapped = info[idx].size; + info[idx].mapped = mapped; + mapcost = 0; + for (sub = 0; sub < site->subtotalscount; sub++) + { + alloctag = site->subtotals[sub].tag; + assert(alloctag < num_info); + if (info[alloctag].name[0]) continue; + take = info[alloctag].mapped; + if (take > info[alloctag].size) take = info[alloctag].size; + if (take > mapped) take = mapped; + info[alloctag].mapped -= take; + info[alloctag].size -= take; + mapped -= take; + mapcost += take; + } + info[idx].size = mapcost; + } + } + lck_spin_unlock(&vm_allocation_sites_lock); + + return (0); +} + +uint32_t +vm_page_diagnose_estimate(void) +{ + vm_allocation_site_t * site; + uint32_t count; + uint32_t idx; + + lck_spin_lock(&vm_allocation_sites_lock); + for (count = idx = 0; idx < VM_MAX_TAG_VALUE; idx++) + { + site = vm_allocation_sites[idx]; + if (!site) continue; + count++; +#if VM_MAX_TAG_ZONES + if (vm_allocation_zone_totals) + { + vm_allocation_zone_total_t * zone; + zone = vm_allocation_zone_totals[idx]; + if (!zone) continue; + for (uint32_t zidx = 0; zidx < VM_MAX_TAG_ZONES; zidx++) if (zone[zidx].peak) count++; + } +#endif + } + lck_spin_unlock(&vm_allocation_sites_lock); + + /* some slop for new tags created */ + count += 8; + count += VM_KERN_COUNTER_COUNT; + + return (count); +} + + +kern_return_t +vm_page_diagnose(mach_memory_info_t * info, unsigned int num_info, uint64_t zones_collectable_bytes) +{ + uint64_t wired_size; + uint64_t wired_managed_size; + uint64_t wired_reserved_size; + uint64_t booter_size; + boolean_t iterate; + mach_memory_info_t * counts; + + bzero(info, num_info * sizeof(mach_memory_info_t)); + + if (!vm_page_wire_count_initial) return (KERN_ABORTED); + +#if CONFIG_EMBEDDED + wired_size = ptoa_64(vm_page_wire_count); + wired_reserved_size = ptoa_64(vm_page_wire_count_initial - vm_page_stolen_count); +#else + wired_size = ptoa_64(vm_page_wire_count + vm_lopage_free_count + vm_page_throttled_count); + wired_reserved_size = ptoa_64(vm_page_wire_count_initial - vm_page_stolen_count + vm_page_throttled_count); +#endif + wired_managed_size = ptoa_64(vm_page_wire_count - vm_page_wire_count_initial); + + booter_size = ml_get_booter_memory_size(); + wired_size += booter_size; + + assert(num_info >= VM_KERN_COUNTER_COUNT); + num_info -= VM_KERN_COUNTER_COUNT; + counts = &info[num_info]; + +#define SET_COUNT(xcount, xsize, xflags) \ + counts[xcount].tag = VM_MAX_TAG_VALUE + xcount; \ + counts[xcount].site = (xcount); \ + counts[xcount].size = (xsize); \ + counts[xcount].mapped = (xsize); \ + counts[xcount].flags = VM_KERN_SITE_COUNTER | xflags; + + SET_COUNT(VM_KERN_COUNT_MANAGED, ptoa_64(vm_page_pages), 0); + SET_COUNT(VM_KERN_COUNT_WIRED, wired_size, 0); + SET_COUNT(VM_KERN_COUNT_WIRED_MANAGED, wired_managed_size, 0); + SET_COUNT(VM_KERN_COUNT_RESERVED, wired_reserved_size, VM_KERN_SITE_WIRED); + SET_COUNT(VM_KERN_COUNT_STOLEN, ptoa_64(vm_page_stolen_count), VM_KERN_SITE_WIRED); + SET_COUNT(VM_KERN_COUNT_LOPAGE, ptoa_64(vm_lopage_free_count), VM_KERN_SITE_WIRED); + SET_COUNT(VM_KERN_COUNT_WIRED_BOOT, ptoa_64(vm_page_wire_count_on_boot), 0); + SET_COUNT(VM_KERN_COUNT_BOOT_STOLEN, booter_size, VM_KERN_SITE_WIRED); + +#define SET_MAP(xcount, xsize, xfree, xlargest) \ + counts[xcount].site = (xcount); \ + counts[xcount].size = (xsize); \ + counts[xcount].mapped = (xsize); \ + counts[xcount].free = (xfree); \ + counts[xcount].largest = (xlargest); \ + counts[xcount].flags = VM_KERN_SITE_COUNTER; + + vm_map_size_t map_size, map_free, map_largest; + + vm_map_sizes(kernel_map, &map_size, &map_free, &map_largest); + SET_MAP(VM_KERN_COUNT_MAP_KERNEL, map_size, map_free, map_largest); + + vm_map_sizes(zone_map, &map_size, &map_free, &map_largest); + SET_MAP(VM_KERN_COUNT_MAP_ZONE, map_size, map_free, map_largest); + + vm_map_sizes(kalloc_map, &map_size, &map_free, &map_largest); + SET_MAP(VM_KERN_COUNT_MAP_KALLOC, map_size, map_free, map_largest); + + iterate = !VM_TAG_ACTIVE_UPDATE; + if (iterate) + { + enum { kMaxKernelDepth = 1 }; + vm_map_t maps [kMaxKernelDepth]; + vm_map_entry_t entries[kMaxKernelDepth]; + vm_map_t map; + vm_map_entry_t entry; + vm_object_offset_t offset; + vm_page_t page; + int stackIdx, count; + + vm_page_iterate_objects(info, num_info, &vm_page_count_object); + + map = kernel_map; + stackIdx = 0; + while (map) + { + vm_map_lock(map); + for (entry = map->hdr.links.next; map; entry = entry->links.next) + { + if (entry->is_sub_map) + { + assert(stackIdx < kMaxKernelDepth); + maps[stackIdx] = map; + entries[stackIdx] = entry; + stackIdx++; + map = VME_SUBMAP(entry); + entry = NULL; + break; + } + if (VME_OBJECT(entry) == kernel_object) + { + count = 0; + vm_object_lock(VME_OBJECT(entry)); + for (offset = entry->links.start; offset < entry->links.end; offset += page_size) + { + page = vm_page_lookup(VME_OBJECT(entry), offset); + if (page && VM_PAGE_WIRED(page)) count++; + } + vm_object_unlock(VME_OBJECT(entry)); + + if (count) + { + assert(VME_ALIAS(entry) != VM_KERN_MEMORY_NONE); + assert(VME_ALIAS(entry) < num_info); + info[VME_ALIAS(entry)].size += ptoa_64(count); + } + } + while (map && (entry == vm_map_last_entry(map))) + { + vm_map_unlock(map); + if (!stackIdx) map = NULL; + else + { + --stackIdx; + map = maps[stackIdx]; + entry = entries[stackIdx]; + } + } + } + } + } + + process_account(info, num_info, zones_collectable_bytes, iterate); + + return (KERN_SUCCESS); +} + +#if DEBUG || DEVELOPMENT + +kern_return_t +vm_kern_allocation_info(uintptr_t addr, vm_size_t * size, vm_tag_t * tag, vm_size_t * zone_size) +{ + kern_return_t ret; + vm_size_t zsize; + vm_map_t map; + vm_map_entry_t entry; + + zsize = zone_element_info((void *) addr, tag); + if (zsize) + { + *zone_size = *size = zsize; + return (KERN_SUCCESS); + } + + *zone_size = 0; + ret = KERN_INVALID_ADDRESS; + for (map = kernel_map; map; ) + { + vm_map_lock(map); + if (!vm_map_lookup_entry(map, addr, &entry)) break; + if (entry->is_sub_map) + { + if (map != kernel_map) break; + map = VME_SUBMAP(entry); + continue; + } + if (entry->vme_start != addr) break; + *tag = VME_ALIAS(entry); + *size = (entry->vme_end - addr); + ret = KERN_SUCCESS; + break; + } + if (map != kernel_map) vm_map_unlock(map); + vm_map_unlock(kernel_map); + + return (ret); +} + +#endif /* DEBUG || DEVELOPMENT */ + +uint32_t +vm_tag_get_kext(vm_tag_t tag, char * name, vm_size_t namelen) +{ + vm_allocation_site_t * site; + uint32_t kmodId; + + kmodId = 0; + lck_spin_lock(&vm_allocation_sites_lock); + if ((site = vm_allocation_sites[tag])) + { + if (VM_TAG_KMOD & site->flags) + { + kmodId = OSKextGetKmodIDForSite(site, name, namelen); + } + } + lck_spin_unlock(&vm_allocation_sites_lock); + + return (kmodId); +}