#include <kern/kalloc.h>
#include <kern/zalloc.h>
#include <kern/xpr.h>
+#include <kern/ledger.h>
#include <vm/pmap.h>
#include <vm/vm_init.h>
#include <vm/vm_map.h>
#include <vm/vm_protos.h>
#include <vm/memory_object.h>
#include <vm/vm_purgeable_internal.h>
+#include <vm/vm_compressor.h>
+
+#if CONFIG_PHANTOM_CACHE
+#include <vm/vm_phantom_cache.h>
+#endif
#include <IOKit/IOHibernatePrivate.h>
* 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 */
lck_spin_t *vm_page_bucket_locks;
+#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
/* This routine is only for debug. It is intended to be called by
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 */
+unsigned int vm_free_magazine_refill_limit = 0;
queue_head_t vm_page_queue_free[MAX_COLORS];
unsigned int vm_page_free_wanted;
unsigned int vm_page_free_wanted_privileged;
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
* resident page structures that do not refer to
* 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;
unsigned int vm_page_wire_count;
unsigned int vm_page_wire_count_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_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;
+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;
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");
break;
}
+#define COLOR_GROUPS_TO_STEAL 4
+
/* Called once during statup, once the cache geometry is known.
*/
vm_colors = n;
vm_color_mask = n - 1;
+
+ vm_free_magazine_refill_limit = vm_colors * COLOR_GROUPS_TO_STEAL;
}
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();
}
void
VPL_LOCK_INIT(lq, &vm_page_lck_grp_local, &vm_page_lck_attr);
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;
m->pageq.prev = NULL;
m->listq.next = NULL;
m->listq.prev = NULL;
- m->next = VM_PAGE_NULL;
+ m->next_m = VM_PAGE_PACK_PTR(VM_PAGE_NULL);
m->object = VM_OBJECT_NULL; /* reset later */
m->offset = (vm_object_offset_t) -1; /* reset later */
m->busy = TRUE;
m->wanted = FALSE;
m->tabled = FALSE;
+ m->hashed = FALSE;
m->fictitious = FALSE;
m->pmapped = FALSE;
m->wpmapped = FALSE;
m->no_cache = FALSE;
m->reusable = FALSE;
m->slid = FALSE;
- m->was_dirty = FALSE;
+ m->xpmapped = FALSE;
+ m->compressor = FALSE;
+ m->written_by_kernel = FALSE;
m->__unused_object_bits = 0;
-
/*
* Initialize the page queues.
*/
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]);
/*
* Steal memory for the map and zone subsystems.
*/
+ kernel_debug_string("zone_steal_memory");
zone_steal_memory();
+ kernel_debug_string("vm_map_steal_memory");
vm_map_steal_memory();
/*
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("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("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];
- 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;
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);
+#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.
* to get the alignment right.
*/
+ kernel_debug_string("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);
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 */
vm_page_wire_count_initial = vm_page_wire_count;
- vm_page_free_count_minimum = vm_page_free_count;
printf("vm_page_bootstrap: %d free pages and %d wired pages\n",
vm_page_free_count, vm_page_wire_count);
+ kernel_debug_string("vm_page_bootstrap complete");
simple_lock_init(&vm_paging_lock, 0);
}
return (void *) addr;
}
+void vm_page_release_startup(vm_page_t mem);
void
pmap_startup(
vm_offset_t *startp,
ppnum_t phys_page;
addr64_t tmpaddr;
+
+#if defined(__LP64__)
+ /*
+ * struct vm_page must be of size 64 due to VM_PAGE_PACK_PTR use
+ */
+ assert(sizeof(struct vm_page) == 64);
+
+ /*
+ * 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.
/*
* Initialize the page frames.
*/
+ kernel_debug_string("Initialize the page frames");
for (i = 0, pages_initialized = 0; i < npages; i++) {
if (!pmap_next_page(&phys_page))
break;
}
vm_pages_count = pages_initialized;
+#if defined(__LP64__)
+
+ if (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_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("page fill/release");
/*
* Check if we want to initialize pages to a known value
*/
// 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]);
+ vm_page_release_startup(&vm_pages[i - 1]);
}
}
else
*/
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]);
+ vm_page_release_startup(&vm_pages[i - 1]);
}
+ VM_CHECK_MEMORYSTATUS;
+
#if 0
{
vm_page_t xx, xxo, xxl;
boolean_t insert_in_hash,
boolean_t batch_pmap_op)
{
- 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",
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));
+
+ /* the vm_submap_object is only a placeholder for submaps */
+ assert(object != vm_submap_object);
vm_object_lock_assert_exclusive(object);
#if DEBUG
#endif /* DEBUG */
if (insert_in_hash == TRUE) {
-#if DEBUG
+#if DEBUG || VM_PAGE_CHECK_BUCKETS
if (mem->tabled || mem->object != VM_OBJECT_NULL)
panic("vm_page_insert: page %p for (obj=%p,off=0x%llx) "
"already in (obj=%p,off=0x%llx)",
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_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);
}
/*
* Now link into the object's list of backed pages.
*/
-
VM_PAGE_INSERT(mem, object);
mem->tabled = TRUE;
}
assert(object->resident_page_count >= object->wired_page_count);
+ 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 (mem->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))) {
+ /* 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) {
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 */
}
/*
VM_PAGE_CHECK(mem);
#endif
vm_object_lock_assert_exclusive(object);
-#if DEBUG
+#if DEBUG || VM_PAGE_CHECK_BUCKETS
if (mem->tabled || mem->object != VM_OBJECT_NULL)
panic("vm_page_replace: page %p for (obj=%p,off=0x%llx) "
"already in (obj=%p,off=0x%llx)",
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_UNPACK_PTR(*mp);
do {
if (m->object == object && m->offset == offset) {
/*
* Remove old page from hash list
*/
- *mp = m->next;
+ *mp = m->next_m;
+ m->hashed = FALSE;
found_m = m;
break;
}
- mp = &m->next;
- } while ((m = *mp));
+ mp = &m->next_m;
+ } while ((m = 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(VM_PAGE_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);
vm_page_t this;
lck_spin_t *bucket_lock;
int hash_id;
+ task_t owner;
XPR(XPR_VM_PAGE,
"vm_page_remove, object 0x%X offset 0x%X page 0x%X\n",
lck_spin_lock(bucket_lock);
- if ((this = bucket->pages) == mem) {
+ if ((this = 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_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;
lck_spin_unlock(bucket_lock);
}
/*
assert(mem->object->resident_page_count > 0);
mem->object->resident_page_count--;
+ if (mem->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->xpmapped) {
+ assert(vm_page_xpmapped_external_count);
+ OSAddAtomic(-1, &vm_page_xpmapped_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);
vm_page_stats_reusable.reused_remove++;
}
+ if (mem->object->purgable == VM_PURGABLE_DENY) {
+ owner = TASK_NULL;
+ } else {
+ owner = mem->object->vo_purgeable_owner;
+ }
+ if (owner &&
+ (mem->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 &&
+ (mem->object->purgable == VM_PURGABLE_VOLATILE ||
+ mem->object->purgable == VM_PURGABLE_EMPTY)) {
+ assert(! VM_PAGE_WIRED(mem));
+ /* less volatile bytes */
+ ledger_debit(owner->ledger,
+ task_ledgers.purgeable_volatile,
+ PAGE_SIZE);
+ }
if (mem->object->purgable == VM_PURGABLE_VOLATILE) {
if (VM_PAGE_WIRED(mem)) {
assert(vm_page_purgeable_wired_count > 0);
* 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) {
+ if (!bucket->page_list) {
vm_page_lookup_bucket_NULL++;
return (VM_PAGE_NULL);
lck_spin_lock(bucket_lock);
- for (mem = bucket->pages; mem != VM_PAGE_NULL; mem = mem->next) {
+ for (mem = VM_PAGE_UNPACK_PTR(bucket->page_list); mem != VM_PAGE_NULL; mem = VM_PAGE_UNPACK_PTR(mem->next_m)) {
#if 0
/*
* we don't hold the page queue lock
vm_object_offset_t new_offset,
boolean_t encrypted_ok)
{
+ boolean_t internal_to_external, external_to_internal;
+
assert(mem->object != new_object);
/*
*/
vm_page_lockspin_queues();
+ internal_to_external = FALSE;
+ external_to_internal = FALSE;
+
+ if (mem->local) {
+ /*
+ * 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);
+ vm_page_activate(mem);
+ }
+ if (mem->active || mem->inactive || mem->speculative) {
+ if (mem->object->internal && !new_object->internal) {
+ internal_to_external = TRUE;
+ }
+ if (!mem->object->internal && new_object->internal) {
+ external_to_internal = TRUE;
+ }
+ }
+
vm_page_remove(mem, TRUE);
vm_page_insert_internal(mem, new_object, new_offset, TRUE, TRUE, FALSE);
+ 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();
}
vm_page_wait(THREAD_UNINT);
return;
}
+
+ /* Increment zone page count. We account for all memory managed by the zone in z->page_count */
+ OSAddAtomic64(1, &(vm_page_zone->page_count));
+
zcram(vm_page_zone, addr, PAGE_SIZE);
lck_mtx_unlock(&vm_page_alloc_lock);
* 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;
/*
* request from the per-cpu queue.
*/
-#define COLOR_GROUPS_TO_STEAL 4
-
vm_page_t
vm_page_grab( void )
return_page_from_cpu_list:
PROCESSOR_DATA(current_processor(), page_grab_count) += 1;
PROCESSOR_DATA(current_processor(), free_pages) = mem->pageq.next;
- mem->pageq.next = NULL;
enable_preemption();
+ mem->pageq.next = NULL;
assert(mem->listq.next == NULL && mem->listq.prev == NULL);
assert(mem->tabled == FALSE);
* 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);
/*
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;
+
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]))
color = (color + 1) & vm_color_mask;
tail->pageq.next = (queue_t)mem;
tail = mem;
- mem->pageq.prev = NULL;
assert(mem->listq.next == NULL && mem->listq.prev == NULL);
assert(mem->tabled == FALSE);
assert(mem->object == VM_OBJECT_NULL);
assert(!mem->wpmapped);
assert(!pmap_is_noencrypt(mem->phys_page));
}
+ lck_mtx_unlock(&vm_page_queue_free_lock);
+
PROCESSOR_DATA(current_processor(), free_pages) = head->pageq.next;
PROCESSOR_DATA(current_processor(), start_color) = color;
mem = head;
mem->pageq.next = NULL;
- lck_mtx_unlock(&vm_page_queue_free_lock);
-
enable_preemption();
}
/*
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(
+ register vm_page_t mem)
+{
+ queue_t queue_free;
+
+ if (vm_lopage_free_count < vm_lopage_free_limit &&
+ mem->phys_page < max_valid_low_ppnum) {
+ mem->lopage = TRUE;
+ vm_lopage_free_count++;
+ queue_free = &vm_lopage_queue_free;
+ } else {
+ mem->lopage = FALSE;
+ mem->free = TRUE;
+ vm_page_free_count++;
+ queue_free = &vm_page_queue_free[mem->phys_page & vm_color_mask];
+ }
+ queue_enter_first(queue_free, mem, vm_page_t, pageq);
+}
+
/*
* vm_page_wait:
*
if (need_wakeup)
thread_wakeup((event_t)&vm_page_free_wanted);
- if (wait_result == THREAD_WAITING)
+ 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, 0, 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);
} else {
VM_PAGE_CHECK(mem);
assert(!mem->free);
assert(!mem->cleaning);
-#if DEBUG
+
+#if MACH_ASSERT || 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
+#endif /* MACH_ASSERT || DEBUG */
if (mem->object) {
vm_object_lock_assert_exclusive(mem->object);
}
vm_pageout_steal_laundry(mem, TRUE);
counter(++c_laundry_pages_freed);
}
-
+
VM_PAGE_QUEUES_REMOVE(mem); /* clears local/active/inactive/throttled/speculative */
if (VM_PAGE_WIRED(mem)) {
assert(vm_page_purgeable_wired_count > 0);
OSAddAtomic(-1, &vm_page_purgeable_wired_count);
}
+ if ((mem->object->purgable == VM_PURGABLE_VOLATILE ||
+ mem->object->purgable == VM_PURGABLE_EMPTY) &&
+ mem->object->vo_purgeable_owner != TASK_NULL) {
+ task_t owner;
+
+ owner = mem->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--;
OSAddAtomic(-1, &vm_page_purgeable_count);
OSAddAtomic(1, &vm_page_purgeable_wired_count);
}
+ if ((mem->object->purgable == VM_PURGABLE_VOLATILE ||
+ mem->object->purgable == VM_PURGABLE_EMPTY) &&
+ mem->object->vo_purgeable_owner != TASK_NULL) {
+ task_t owner;
+
+ owner = mem->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 (mem->object->all_reusable) {
/*
* Wired pages are not counted as "re-usable"
assert(vm_page_purgeable_wired_count > 0);
OSAddAtomic(-1, &vm_page_purgeable_wired_count);
}
- assert(!mem->laundry);
+ if ((mem->object->purgable == VM_PURGABLE_VOLATILE ||
+ mem->object->purgable == VM_PURGABLE_EMPTY) &&
+ mem->object->vo_purgeable_owner != TASK_NULL) {
+ task_t owner;
+
+ owner = mem->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(mem->object != kernel_object);
assert(mem->pageq.next == NULL && mem->pageq.prev == NULL);
* 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)))
+ if (m->laundry || m->pageout_queue || m->private || m->fictitious || m->compressor || (VM_PAGE_WIRED(m)))
return;
if (!m->absent && clear_hw_reference == TRUE)
* 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)
+ if (m->laundry || m->clean_queue || m->pageout_queue || m->private || m->fictitious)
return;
VM_PAGE_QUEUES_REMOVE(m);
m->inactive = TRUE;
vm_page_inactive_count++;
+ if (m->object->internal) {
+ vm_page_pageable_internal_count++;
+ } else {
+ vm_page_pageable_external_count++;
+ }
vm_pageout_enqueued_cleaned++;
}
* 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->pageout_queue || m->private || m->fictitious || m->compressor)
return;
#if DEBUG
queue_enter(&vm_page_queue_active, m, vm_page_t, pageq);
m->active = TRUE;
vm_page_active_count++;
+ if (m->object->internal) {
+ vm_page_pageable_internal_count++;
+ } else {
+ vm_page_pageable_external_count++;
+ }
}
m->reference = TRUE;
m->no_cache = FALSE;
* 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->pageout_queue || m->private || m->fictitious || m->compressor)
return;
VM_PAGE_QUEUES_REMOVE(m);
enqueue_tail(&aq->age_q, &m->pageq);
m->speculative = TRUE;
vm_page_speculative_count++;
+ if (m->object->internal) {
+ vm_page_pageable_internal_count++;
+ } else {
+ vm_page_pageable_external_count++;
+ }
if (new == TRUE) {
vm_object_lock_assert_exclusive(m->object);
* 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->pageout_queue || m->private || m->compressor || (VM_PAGE_WIRED(m)))
return;
m->no_cache = FALSE;
vm_page_t first_active;
vm_page_t m;
int extra_active_count;
+ int extra_internal_count, extra_external_count;
if (!VM_DYNAMIC_PAGING_ENABLED(memory_manager_default))
return;
extra_active_count = 0;
+ extra_internal_count = 0;
+ extra_external_count = 0;
vm_page_lock_queues();
if (! queue_empty(&vm_page_queue_throttled)) {
/*
assert(!VM_PAGE_WIRED(m));
extra_active_count++;
+ if (m->object->internal) {
+ extra_internal_count++;
+ } else {
+ extra_external_count++;
+ }
m->throttled = FALSE;
m->active = TRUE;
* 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);
* 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));
*
* 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
/*
#ifdef PMAP_ZERO_PART_PAGE_IMPLEMENTED
pmap_zero_part_page(m->phys_page, m_pa, len);
#else
+ vm_page_t tmp;
while (1) {
tmp = vm_page_grab();
if (tmp == VM_PAGE_NULL) {
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(" next=%p\n", VM_PAGE_UNPACK_PTR(p->next_m));
printf(" object=%p offset=0x%llx\n", p->object, p->offset);
printf(" wire_count=%u\n", p->wire_count);
/*
* 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_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;
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 %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);
}
int yielded = 0;
int dumped_run = 0;
int stolen_pages = 0;
+ int compressed_pages = 0;
#endif
if (contig_pages == 0)
#if DEBUG
clock_get_system_microtime(&tv_start_sec, &tv_start_usec);
#endif
+ PAGE_REPLACEMENT_ALLOWED(TRUE);
+
vm_page_lock_queues();
lck_mtx_lock(&vm_page_queue_free_lock);
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->encrypted_cleaning ||
+ m->pageout_queue || m->laundry || m->wanted ||
+ m->cleaning || m->overwriting || m->pageout) {
/*
* page is in a transient state
* or a state we don't want to deal
*/
RESET_STATE_OF_RUN();
- } else if (!m->free && !m->active && !m->inactive && !m->speculative && !m->throttled) {
+ } else if (!m->free && !m->active && !m->inactive && !m->speculative && !m->throttled && !m->compressor) {
/*
* page needs to be on one of our queues
+ * or it needs to belong to the compressor pool
* in order for it to be stable behind the
* locks we hold at this point...
* if not, don't consider it which
* 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
}
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);
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
m1 = &vm_pages[cur_idx--];
assert(!m1->free);
+
if (m1->object == VM_OBJECT_NULL) {
/*
* page has already been removed from
assert(!m1->laundry);
} else {
vm_object_t object;
+ int refmod;
+ boolean_t disconnected, reusable;
if (abort_run == TRUE)
continue;
}
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->encrypted_cleaning ||
+ m1->pageout_queue || m1->laundry || m1->wanted ||
+ m1->cleaning || m1->overwriting || m1->pageout || m1->busy)) {
if (locked_object) {
vm_object_unlock(locked_object);
abort_run = TRUE;
continue;
}
- if (m1->pmapped || m1->dirty) {
- int refmod;
+
+ disconnected = FALSE;
+ reusable = FALSE;
+
+ if ((m1->reusable ||
+ m1->object->all_reusable) &&
+ m1->inactive &&
+ !m1->dirty &&
+ !m1->reference) {
+ /* reusable page... */
+ refmod = pmap_disconnect(m1->phys_page);
+ 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();
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 (! disconnected) {
+ if (m1->pmapped)
+ refmod = pmap_disconnect(m1->phys_page);
+ else
+ refmod = 0;
+ }
+
+ /* copy the page's contents */
+ pmap_copy_page(m1->phys_page, m2->phys_page);
+ /* copy the page's state */
+ assert(!VM_PAGE_WIRED(m1));
+ assert(!m1->free);
+ assert(!m1->pageout_queue);
+ 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->pageout);
+ 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->encrypted = m1->encrypted;
+ assert(!m1->encrypted_cleaning);
+ m2->cs_validated = m1->cs_validated;
+ m2->cs_tainted = m1->cs_tainted;
+
+ /*
+ * 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".
+ */
+ // m2->reusable = m1->reusable;
+ assert(!m2->reusable);
+
+ assert(!m1->lopage);
+ m2->slid = m1->slid;
+ m2->compressor = m1->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
+ * from the pmap layer... else we risk
+ * inheriting state from the last time
+ * this page was used...
+ */
+ pmap_clear_refmod(m2->phys_page, VM_MEM_MODIFIED | VM_MEM_REFERENCED);
if (refmod & VM_MEM_REFERENCED)
m2->reference = TRUE;
vm_page_free_prepare(m1);
/*
- * make sure we clear the ref/mod state
- * from the pmap layer... else we risk
- * inheriting state from the last time
- * this page was used...
- */
- pmap_clear_refmod(m2->phys_page, VM_MEM_MODIFIED | VM_MEM_REFERENCED);
- /*
- * 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);
- if (m2->reference)
- vm_page_activate(m2);
- else
- vm_page_deactivate(m2);
+ if (m2->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);
+#if MACH_ASSERT
+ compressed_pages++;
+#endif
+ } else {
+ if (m2->reference)
+ vm_page_activate(m2);
+ else
+ vm_page_deactivate(m2);
+ }
PAGE_WAKEUP_DONE(m2);
} else {
+ assert(!m1->compressor);
+
/*
* completely cleans up the state
* of the page so that it is ready
assert(vm_page_verify_contiguous(m, npages));
}
done_scanning:
+ PAGE_REPLACEMENT_ALLOWED(FALSE);
+
vm_page_unlock_queues();
#if DEBUG
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 (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);
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);
}
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_dirty_pages(int);
static int hibernate_flush_queue(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;
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;
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)
vm_page_lock_queues();
- while (q->pgo_laundry) {
+ while ( !queue_empty(&q->pgo_pending) ) {
q->pgo_draining = TRUE;
wait_result = thread_block(THREAD_CONTINUE_NULL);
- if (wait_result == THREAD_TIMED_OUT) {
+ if (wait_result == THREAD_TIMED_OUT && !queue_empty(&q->pgo_pending)) {
hibernate_stats.hibernate_drain_timeout++;
+
+ if (q == &vm_pageout_queue_external)
+ return (0);
+
return (1);
}
vm_page_lock_queues();
}
+boolean_t hibernate_skip_external = FALSE;
+
static int
hibernate_flush_queue(queue_head_t *q, int qcount)
{
struct vm_pageout_queue *eq;
struct vm_pageout_queue *tq;
- hibernate_cleaning_in_progress = TRUE;
KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 4) | DBG_FUNC_START, q, qcount, 0, 0, 0);
goto reenter_pg_on_q;
}
- vm_pageout_scan_wants_object = m_object;
vm_page_unlock_queues();
mutex_pause(try_failed_count++);
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) {
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) {
/*
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) {
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();
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;
}
}
VM_PAGE_QUEUES_REMOVE(m);
+ if (COMPRESSED_PAGER_IS_ACTIVE && m_object->internal == TRUE)
+ pmap_disconnect_options(m->phys_page, PMAP_OPTIONS_COMPRESSOR, NULL);
+
vm_pageout_cluster(m, FALSE);
hibernate_stats.hibernate_found_dirty++;
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);
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);
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 (COMPRESSED_PAGER_IS_ACTIVE && pass == 1)
+ vm_compressor_record_warmup_start();
+
+ if (hibernate_flush_queue(&vm_page_queue_active, vm_page_active_count)) {
+ if (COMPRESSED_PAGER_IS_ACTIVE && pass == 1)
+ vm_compressor_record_warmup_end();
+ return (1);
+ }
+ if (hibernate_drain_pageout_queue(&vm_pageout_queue_internal)) {
+ if (COMPRESSED_PAGER_IS_ACTIVE && pass == 1)
+ vm_compressor_record_warmup_end();
+ return (1);
+ }
+ if (COMPRESSED_PAGER_IS_ACTIVE && 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()
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) {
+
+ if (COMPRESSED_PAGER_IS_ACTIVE) {
- KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 3) | DBG_FUNC_NONE, vm_page_free_count, 0, 0, 0, 0);
+ KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 10) | DBG_FUNC_START, VM_PAGE_COMPRESSOR_COUNT, 0, 0, 0, 0);
- if ((retval = hibernate_flush_dirty_pages()) == 0) {
+ vm_compressor_flush();
+
+ KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 10) | DBG_FUNC_END, VM_PAGE_COMPRESSOR_COUNT, 0, 0, 0, 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);
- KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 7) | DBG_FUNC_END, vm_page_wire_count, 0, 0, 0, 0);
+ 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, 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 && COMPRESSED_PAGER_IS_ACTIVE)
+ 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,
|| (VM_PURGABLE_VOLATILE == object->purgable)
|| (VM_PURGABLE_EMPTY == object->purgable);
- if (discard == FALSE) {
- if (!preflight) 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);
*/
return;
-#if DEBUG
+#if MACH_ASSERT || DEBUG
vm_object_t object = m->object;
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)
{
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);
+ if (m->object->purgeable_when_ripe) {
+ vm_purgeable_token_delete_first(old_queue);
+ }
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
+#if MACH_ASSERT || DEBUG
vm_object_unlock(object);
-#endif /* DEBUG */
+#endif /* MACH_ASSERT || DEBUG */
}
/*
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_unlock(&vm_page_queue_free_lock);
vm_page_unlock_queues();
+ vm_object_unlock(compressor_object);
}
/*
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 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;
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 %p, %p\n", preflight, page_list, page_list_wired);
page_list = NULL;
page_list_wired = NULL;
page_list_pal = NULL;
+ discard_all = FALSE;
+ } else {
+ discard_all = will_discard;
}
-#if DEBUG
+#if MACH_ASSERT || DEBUG
+ if (!preflight)
+ {
vm_page_lock_queues();
if (vm_page_local_q) {
for (i = 0; i < vm_page_local_q_count; i++) {
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);
}
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--;
}
}
- queue_iterate( &vm_page_queue_throttled,
- m,
- vm_page_t,
- pageq )
+ m = (vm_page_t) queue_first(&vm_page_queue_throttled);
+ while (m && !queue_end(&vm_page_queue_throttled, (queue_entry_t)m))
{
+ next = (vm_page_t) m->pageq.next;
+ discard = FALSE;
if ((kIOHibernateModeDiscardCleanInactive & gIOHibernateMode)
&& hibernate_consider_discard(m, preflight))
{
if (!preflight) hibernate_page_bitset(page_list, TRUE, m->phys_page);
count_discard_inactive++;
+ discard = discard_all;
}
else
count_throttled++;
count_wire--;
if (!preflight) hibernate_page_bitset(page_list_wired, TRUE, m->phys_page);
+
+ if (discard) hibernate_discard_page(m);
+ m = next;
}
- queue_iterate( &vm_page_queue_anonymous,
- m,
- vm_page_t,
- pageq )
+ m = (vm_page_t) queue_first(&vm_page_queue_anonymous);
+ while (m && !queue_end(&vm_page_queue_anonymous, (queue_entry_t)m))
{
+ next = (vm_page_t) m->pageq.next;
+ discard = FALSE;
if ((kIOHibernateModeDiscardCleanInactive & gIOHibernateMode)
&& hibernate_consider_discard(m, preflight))
{
count_discard_purgeable++;
else
count_discard_inactive++;
+ discard = discard_all;
}
else
- count_zf++;
+ count_anonymous++;
count_wire--;
if (!preflight) hibernate_page_bitset(page_list_wired, TRUE, m->phys_page);
+ if (discard) hibernate_discard_page(m);
+ m = next;
}
- queue_iterate( &vm_page_queue_inactive,
- m,
- vm_page_t,
- pageq )
+ m = (vm_page_t) queue_first(&vm_page_queue_cleaned);
+ while (m && !queue_end(&vm_page_queue_cleaned, (queue_entry_t)m))
{
+ next = (vm_page_t) m->pageq.next;
+ discard = FALSE;
if ((kIOHibernateModeDiscardCleanInactive & gIOHibernateMode)
&& hibernate_consider_discard(m, preflight))
{
if (m->dirty)
count_discard_purgeable++;
else
- count_discard_inactive++;
+ count_discard_cleaned++;
+ discard = discard_all;
}
else
- count_inactive++;
+ count_cleaned++;
count_wire--;
if (!preflight) hibernate_page_bitset(page_list_wired, TRUE, m->phys_page);
+ if (discard) hibernate_discard_page(m);
+ m = next;
}
- queue_iterate( &vm_page_queue_cleaned,
- m,
- vm_page_t,
- pageq )
+ m = (vm_page_t) queue_first(&vm_page_queue_active);
+ while (m && !queue_end(&vm_page_queue_active, (queue_entry_t)m))
{
- if ((kIOHibernateModeDiscardCleanInactive & gIOHibernateMode)
+ next = (vm_page_t) m->pageq.next;
+ discard = FALSE;
+ if ((kIOHibernateModeDiscardCleanActive & gIOHibernateMode)
&& hibernate_consider_discard(m, preflight))
{
if (!preflight) hibernate_page_bitset(page_list, TRUE, m->phys_page);
if (m->dirty)
count_discard_purgeable++;
else
- count_discard_cleaned++;
+ count_discard_active++;
+ discard = discard_all;
}
else
- count_cleaned++;
+ count_active++;
count_wire--;
if (!preflight) hibernate_page_bitset(page_list_wired, TRUE, m->phys_page);
+ if (discard) hibernate_discard_page(m);
+ m = next;
}
- for( i = 0; i <= VM_PAGE_MAX_SPECULATIVE_AGE_Q; i++ )
- {
- queue_iterate(&vm_page_queue_speculative[i].age_q,
- m,
- vm_page_t,
- pageq)
- {
- if ((kIOHibernateModeDiscardCleanInactive & gIOHibernateMode)
- && hibernate_consider_discard(m, preflight))
- {
- if (!preflight) hibernate_page_bitset(page_list, TRUE, m->phys_page);
- count_discard_speculative++;
- }
- else
- count_speculative++;
- count_wire--;
- if (!preflight) hibernate_page_bitset(page_list_wired, TRUE, m->phys_page);
- }
- }
-
- queue_iterate( &vm_page_queue_active,
- m,
- vm_page_t,
- pageq )
+ m = (vm_page_t) queue_first(&vm_page_queue_inactive);
+ while (m && !queue_end(&vm_page_queue_inactive, (queue_entry_t)m))
{
- if ((kIOHibernateModeDiscardCleanActive & gIOHibernateMode)
+ next = (vm_page_t) m->pageq.next;
+ discard = FALSE;
+ if ((kIOHibernateModeDiscardCleanInactive & gIOHibernateMode)
&& hibernate_consider_discard(m, preflight))
{
if (!preflight) hibernate_page_bitset(page_list, TRUE, m->phys_page);
if (m->dirty)
count_discard_purgeable++;
else
- count_discard_active++;
+ count_discard_inactive++;
+ discard = discard_all;
}
else
- count_active++;
+ count_inactive++;
count_wire--;
if (!preflight) hibernate_page_bitset(page_list_wired, TRUE, m->phys_page);
+ if (discard) hibernate_discard_page(m);
+ m = next;
+ }
+
+ 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))
+ {
+ next = (vm_page_t) m->pageq.next;
+ discard = FALSE;
+ if ((kIOHibernateModeDiscardCleanInactive & gIOHibernateMode)
+ && hibernate_consider_discard(m, preflight))
+ {
+ if (!preflight) hibernate_page_bitset(page_list, TRUE, m->phys_page);
+ count_discard_speculative++;
+ discard = discard_all;
+ }
+ else
+ count_speculative++;
+ count_wire--;
+ if (!preflight) hibernate_page_bitset(page_list_wired, TRUE, m->phys_page);
+ if (discard) hibernate_discard_page(m);
+ m = next;
+ }
+ }
+
+ queue_iterate(&compressor_object->memq, m, vm_page_t, listq)
+ {
+ count_compressor++;
+ count_wire--;
+ if (!preflight) hibernate_page_bitset(page_list_wired, TRUE, m->phys_page);
+ }
+
+ if (preflight == FALSE && discard_all == TRUE) {
+ KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 12) | DBG_FUNC_START, 0, 0, 0, 0, 0);
+
+ 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);
+
+ pages -= count_discard_vm_struct_pages;
+ count_wire -= count_discard_vm_struct_pages;
+
+ hibernate_stats.cd_vm_struct_pages_unneeded = count_discard_vm_struct_pages;
+
+ KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 13) | DBG_FUNC_END, 0, 0, 0, 0, 0);
}
if (!preflight) {
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;
+ 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, 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,
+ 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 DEBUG
+ 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;
}
}
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);
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++) {
VPL_LOCK(&lq->vpl_lock);
}
}
-#endif /* DEBUG */
+#endif /* MACH_ASSERT || DEBUG */
clock_get_uptime(&start);
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;
}
}
vm_page_unlock_queues();
-#endif /* DEBUG */
+#endif /* MACH_ASSERT || DEBUG */
clock_get_uptime(&end);
absolutetime_to_nanoseconds(end - start, &nsec);
count_discard_active, count_discard_inactive, count_discard_purgeable, count_discard_speculative, count_discard_cleaned);
}
+boolean_t hibernate_paddr_map_inited = FALSE;
+boolean_t hibernate_rebuild_needed = 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_pages[i].phys_page != 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_pages[i].phys_page;
+ }
+ next_ppnum_in_run = vm_pages[i].phys_page + 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;
+
+ assert(mem->hashed);
+ assert(mem->object);
+ assert(mem->offset != (vm_object_offset_t) -1);
+
+ /*
+ * Insert it into the object_object/offset hash table
+ */
+ hash_id = vm_page_hash(mem->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->free = TRUE;
+
+ color = mem->phys_page & vm_color_mask;
+ queue_enter_first(&vm_page_queue_free[color],
+ mem,
+ vm_page_t,
+ pageq);
+ vm_page_free_count++;
+
+ sindx++;
+ }
+}
+
+
+extern void hibernate_rebuild_pmap_structs(void);
+
+void
+hibernate_rebuild_vm_structs(void)
+{
+ int cindx, sindx, eindx;
+ vm_page_t mem, tmem, mem_next;
+ AbsoluteTime startTime, endTime;
+ uint64_t nsec;
+
+ if (hibernate_rebuild_needed == FALSE)
+ return;
+
+ KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 13) | DBG_FUNC_START, 0, 0, 0, 0, 0);
+ 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;
+
+ for (cindx = hibernate_teardown_last_valid_compact_indx; cindx >= 0; cindx--) {
+
+ mem = &vm_pages[cindx];
+ /*
+ * hibernate_teardown_vm_structs leaves the location where
+ * this vm_page_t must be located in "next".
+ */
+ tmem = 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_UNPACK_PTR(mem->next_m);
+
+ mem->next_m = VM_PAGE_PACK_PTR(NULL);
+ 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;
+
+ KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 13) | DBG_FUNC_END, 0, 0, 0, 0, 0);
+}
+
+
+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);
+
+ 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_UNPACK_PTR(bucket->page_list); mem != VM_PAGE_NULL; mem = mem_next) {
+ assert(mem->hashed);
+
+ mem_next = 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->free) {
+ unsigned int color;
+
+ assert(mem->busy);
+ assert(!mem->lopage);
+
+ color = mem->phys_page & vm_color_mask;
+
+ queue_remove(&vm_page_queue_free[color],
+ mem,
+ vm_page_t,
+ pageq);
+ mem->pageq.next = NULL;
+ mem->pageq.prev = NULL;
+
+ vm_page_free_count--;
+
+ hibernate_teardown_found_free_pages++;
+
+ if ( !vm_pages[compact_target_indx].free)
+ 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].free) {
+ /*
+ * 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->free = TRUE;
+
+ 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);
+
+ hibernate_rebuild_needed = TRUE;
+
+ return (mark_as_unneeded_pages);
+}
+
+
#endif /* HIBERNATION */
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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_UNPACK_PTR(bucket->page_list); m != VM_PAGE_NULL; m = VM_PAGE_UNPACK_PTR(m->next_m))
bucket_count++;
lck_spin_unlock(bucket_lock);
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++) {
+ 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_UNPACK_PTR(bucket->page_list);
+ while (p != VM_PAGE_NULL) {
+ 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_UNPACK_PTR(p->next_m);
+ }
+ lck_spin_unlock(bucket_lock);
+ }
+
+// printf("BUCKET_CHECK: checked buckets\n");
+}
+#endif /* VM_PAGE_BUCKETS_CHECK */
projects / apple / xnu.git / blobdiff