#define _VM_VM_PAGE_H_
#include <debug.h>
+#include <vm/vm_options.h>
#include <mach/boolean.h>
#include <mach/vm_prot.h>
#include <mach/vm_param.h>
#include <vm/vm_object.h>
#include <kern/queue.h>
-#include <kern/lock.h>
+#include <kern/locks.h>
#include <kern/macro_help.h>
#include <libkern/OSAtomic.h>
#define VM_PAGE_SPECULATIVE_Q_AGE_MS 500
-
struct vm_speculative_age_q {
/*
* memory queue for speculative pages via clustered pageins
};
+
extern
struct vm_speculative_age_q vm_page_queue_speculative[];
extern int speculative_steal_index;
extern int speculative_age_index;
+extern unsigned int vm_page_speculative_q_age_ms;
+
+#define VM_PAGE_COMPRESSOR_COUNT (compressor_object->resident_page_count)
/*
* Management of resident (logical) pages.
* change that field; holding either lock is sufficient to read.]
*/
+
+#if defined(__LP64__)
+
+/*
+ * in order to make the size of a vm_page_t 64 bytes (cache line size for both arm64 and x86_64)
+ * we'll keep the next_m pointer packed... as long as the kernel virtual space where we allocate
+ * vm_page_t's from doesn't span more then 256 Gbytes, we're safe. There are live tests in the
+ * vm_page_t array allocation and the zone init code to determine if we can safely pack and unpack
+ * pointers from the 2 ends of these spaces
+ */
+typedef uint32_t vm_page_packed_t;
+
+#define VM_PAGE_PACK_PTR(m) (!(m) ? (vm_page_packed_t)0 : ((vm_page_packed_t)((uintptr_t)(((uintptr_t)(m) - (uintptr_t) VM_MIN_KERNEL_AND_KEXT_ADDRESS)) >> 6)))
+#define VM_PAGE_UNPACK_PTR(p) (!(p) ? VM_PAGE_NULL : ((vm_page_t)((((uintptr_t)(p)) << 6) + (uintptr_t) VM_MIN_KERNEL_AND_KEXT_ADDRESS)))
+
+#else
+
+/*
+ * we can't do the packing trick on 32 bit architectures, so
+ * just turn the macros into noops.
+ */
+typedef struct vm_page *vm_page_packed_t;
+
+#define VM_PAGE_PACK_PTR(m) ((vm_page_packed_t)(m))
+#define VM_PAGE_UNPACK_PTR(p) ((vm_page_t)(p))
+
+#endif
+
+
struct vm_page {
- queue_chain_t pageq; /* queue info for FIFO
- * queue or free list (P) */
+ queue_chain_t pageq; /* queue info for FIFO */
+ /* queue or free list (P) */
+
queue_chain_t listq; /* all pages in same object (O) */
- struct vm_page *next; /* VP bucket link (O) */
- vm_object_t object; /* which object am I in (O&P) */
vm_object_offset_t offset; /* offset into that object (O,P) */
+ vm_object_t object; /* which object am I in (O&P) */
+ vm_page_packed_t next_m; /* VP bucket link (O) */
/*
* The following word of flags is protected
* by the "page queues" lock.
+ *
+ * we use the 'wire_count' field to store the local
+ * queue id if local queues are enabled...
+ * see the comments at 'VM_PAGE_QUEUES_REMOVE' as to
+ * why this is safe to do
*/
+#define local_id wire_count
unsigned int wire_count:16, /* how many wired down maps use me? (O&P) */
- /* boolean_t */ inactive:1, /* page is in inactive list (P) */
- active:1, /* page is in active list (P) */
+ /* boolean_t */ active:1, /* page is in active list (P) */
+ inactive:1, /* page is in inactive list (P) */
+ clean_queue:1, /* page is in pre-cleaned list (P) */
+ local:1, /* page is in one of the local queues (P) */
+ speculative:1, /* page is in speculative list (P) */
+ throttled:1, /* pager is not responding or doesn't exist(P) */
+ free:1, /* page is on free list (P) */
pageout_queue:1,/* page is on queue for pageout (P) */
- speculative:1, /* page is on speculative list (P) */
laundry:1, /* page is being cleaned now (P)*/
- free:1, /* page is on free list (P) */
reference:1, /* page has been used (P) */
- pageout:1, /* page wired & busy for pageout (P) */
gobbled:1, /* page used internally (P) */
private:1, /* Page should not be returned to
* the free list (P) */
- throttled:1, /* pager is not responding (P) */
- __unused_pageq_bits:5; /* 5 bits available here */
+ no_cache:1, /* page is not to be cached and should
+ * be reused ahead of other pages (P) */
+
+ __unused_pageq_bits:3; /* 3 bits available here */
+
+ ppnum_t phys_page; /* Physical address of page, passed
+ * to pmap_enter (read-only) */
/*
* The following word of flags is protected
/* boolean_t */ busy:1, /* page is in transit (O) */
wanted:1, /* someone is waiting for page (O) */
tabled:1, /* page is in VP table (O) */
+ hashed:1, /* page is in vm_page_buckets[]
+ (O) + the bucket lock */
fictitious:1, /* Physical page doesn't exist (O) */
+ /*
+ * IMPORTANT: the "pmapped", "xpmapped" and "clustered" bits can be modified while holding the
+ * VM object "shared" lock + the page lock provided through the pmap_lock_phys_page function.
+ * This is done in vm_fault_enter and the CONSUME_CLUSTERED macro.
+ * It's also ok to modify them behind just the VM object "exclusive" lock.
+ */
+ clustered:1, /* page is not the faulted page (O) or (O-shared AND pmap_page) */
pmapped:1, /* page has been entered at some
- * point into a pmap (O) */
+ * point into a pmap (O) or (O-shared AND pmap_page) */
+ xpmapped:1, /* page has been entered with execute permission (O)
+ or (O-shared AND pmap_page) */
+
wpmapped:1, /* page has been entered at some
* point into a pmap for write (O) */
+ pageout:1, /* page wired & busy for pageout (O) */
absent:1, /* Data has been requested, but is
* not yet available (O) */
error:1, /* Data manager was unable to provide
cleaning:1, /* Page clean has begun (O) */
precious:1, /* Page is precious; data must be
* returned even if clean (O) */
- clustered:1, /* page is not the faulted page (O) */
overwriting:1, /* Request to unlock has been made
* without having data. (O)
* [See vm_fault_page_overwrite] */
page locked */
encrypted:1, /* encrypted for secure swap (O) */
encrypted_cleaning:1, /* encrypting page */
- list_req_pending:1, /* pagein/pageout alt mechanism */
- /* allows creation of list */
- /* requests on pages that are */
- /* actively being paged. */
- dump_cleaning:1, /* set by the pageout daemon when */
- /* a page being cleaned is */
- /* encountered and targeted as */
- /* a pageout candidate */
cs_validated:1, /* code-signing: page was checked */
cs_tainted:1, /* code-signing: page is tainted */
- no_cache:1, /* page is not to be cached and */
- /* should be reused ahead of */
- /* other pages */
- deactivated:1,
- zero_fill:1,
- __unused_object_bits:8; /* 8 bits available here */
-
- ppnum_t phys_page; /* Physical address of page, passed
- * to pmap_enter (read-only) */
+ reusable:1,
+ lopage:1,
+ slid:1,
+ compressor:1, /* page owned by compressor pool */
+ written_by_kernel:1, /* page was written by kernel (i.e. decompressed) */
+ __unused_object_bits:5; /* 5 bits available here */
};
#define DEBUG_ENCRYPTED_SWAP 1
typedef struct vm_page *vm_page_t;
+
+typedef struct vm_locks_array {
+ char pad __attribute__ ((aligned (64)));
+ lck_mtx_t vm_page_queue_lock2 __attribute__ ((aligned (64)));
+ lck_mtx_t vm_page_queue_free_lock2 __attribute__ ((aligned (64)));
+ char pad2 __attribute__ ((aligned (64)));
+} vm_locks_array_t;
+
+
+#define VM_PAGE_WIRED(m) ((!(m)->local && (m)->wire_count))
#define VM_PAGE_NULL ((vm_page_t) 0)
#define NEXT_PAGE(m) ((vm_page_t) (m)->pageq.next)
#define NEXT_PAGE_PTR(m) ((vm_page_t *) &(m)->pageq.next)
* some useful check on a page structure.
*/
-#define VM_PAGE_CHECK(mem) do {} while (0)
+#define VM_PAGE_CHECK(mem) \
+ MACRO_BEGIN \
+ VM_PAGE_QUEUES_ASSERT(mem, 1); \
+ MACRO_END
/* Page coloring:
*
extern
unsigned int vm_cache_geometry_colors; /* optimal #colors based on cache geometry */
+/*
+ * Wired memory is a very limited resource and we can't let users exhaust it
+ * and deadlock the entire system. We enforce the following limits:
+ *
+ * vm_user_wire_limit (default: all memory minus vm_global_no_user_wire_amount)
+ * how much memory can be user-wired in one user task
+ *
+ * vm_global_user_wire_limit (default: same as vm_user_wire_limit)
+ * how much memory can be user-wired in all user tasks
+ *
+ * vm_global_no_user_wire_amount (default: VM_NOT_USER_WIREABLE)
+ * how much memory must remain user-unwired at any time
+ */
+#define VM_NOT_USER_WIREABLE (64*1024*1024) /* 64MB */
+extern
+vm_map_size_t vm_user_wire_limit;
+extern
+vm_map_size_t vm_global_user_wire_limit;
+extern
+vm_map_size_t vm_global_no_user_wire_amount;
+
/*
* Each pageable resident page falls into one of three lists:
*
* ordered, in LRU-like fashion.
*/
+
+#define VPL_LOCK_SPIN 1
+
+struct vpl {
+ unsigned int vpl_count;
+ unsigned int vpl_internal_count;
+ unsigned int vpl_external_count;
+ queue_head_t vpl_queue;
+#ifdef VPL_LOCK_SPIN
+ lck_spin_t vpl_lock;
+#else
+ lck_mtx_t vpl_lock;
+ lck_mtx_ext_t vpl_lock_ext;
+#endif
+};
+
+struct vplq {
+ union {
+ char cache_line_pad[128];
+ struct vpl vpl;
+ } vpl_un;
+};
+extern
+unsigned int vm_page_local_q_count;
+extern
+struct vplq *vm_page_local_q;
+extern
+unsigned int vm_page_local_q_soft_limit;
+extern
+unsigned int vm_page_local_q_hard_limit;
+extern
+vm_locks_array_t vm_page_locks;
+
extern
queue_head_t vm_page_queue_free[MAX_COLORS]; /* memory free queue */
extern
queue_head_t vm_lopage_queue_free; /* low memory free queue */
extern
-vm_page_t vm_page_queue_fictitious; /* fictitious free queue */
-extern
queue_head_t vm_page_queue_active; /* active memory queue */
extern
queue_head_t vm_page_queue_inactive; /* inactive memory queue for normal pages */
extern
-queue_head_t vm_page_queue_zf; /* inactive memory queue for zero fill */
+queue_head_t vm_page_queue_cleaned; /* clean-queue inactive memory */
+extern
+queue_head_t vm_page_queue_anonymous; /* inactive memory queue for anonymous pages */
+extern
queue_head_t vm_page_queue_throttled; /* memory queue for throttled pageout pages */
extern
extern
unsigned int vm_page_inactive_count; /* How many pages are inactive? */
extern
+unsigned int vm_page_cleaned_count; /* How many pages are in the clean queue? */
+extern
unsigned int vm_page_throttled_count;/* How many inactives are throttled */
extern
unsigned int vm_page_speculative_count; /* How many speculative pages are unclaimed? */
+extern unsigned int vm_page_pageable_internal_count;
+extern unsigned int vm_page_pageable_external_count;
+extern
+unsigned int vm_page_xpmapped_external_count; /* How many pages are mapped executable? */
+extern
+unsigned int vm_page_external_count; /* How many pages are file-backed? */
extern
-unsigned int vm_page_wire_count; /* How many pages are wired? */
+unsigned int vm_page_internal_count; /* How many pages are anonymous? */
extern
-vm_map_size_t vm_user_wire_limit; /* How much memory can be locked by a user? */
+unsigned int vm_page_wire_count; /* How many pages are wired? */
extern
-vm_map_size_t vm_global_user_wire_limit; /* How much memory can be locked system wide by users? */
+unsigned int vm_page_wire_count_initial; /* How many pages wired at startup */
extern
unsigned int vm_page_free_target; /* How many do we want free? */
extern
unsigned int vm_page_free_min; /* When to wakeup pageout */
extern
+unsigned int vm_page_throttle_limit; /* When to throttle new page creation */
+extern
+uint32_t vm_page_creation_throttle; /* When to throttle new page creation */
+extern
unsigned int vm_page_inactive_target;/* How many do we want inactive? */
extern
+unsigned int vm_page_anonymous_min; /* When it's ok to pre-clean */
+extern
unsigned int vm_page_inactive_min; /* When do wakeup pageout */
extern
unsigned int vm_page_free_reserved; /* How many pages reserved to do pageout */
extern
-unsigned int vm_page_zfill_throttle_count;/* Count of zero-fill allocations throttled */
+unsigned int vm_page_throttle_count; /* Count of page allocations throttled */
extern
unsigned int vm_page_gobble_count;
-extern
-unsigned int vm_page_speculative_unused;
+#if DEVELOPMENT || DEBUG
extern
unsigned int vm_page_speculative_used;
+#endif
+
extern
unsigned int vm_page_purgeable_count;/* How many pages are purgeable now ? */
extern
+unsigned int vm_page_purgeable_wired_count;/* How many purgeable pages are wired now ? */
+extern
uint64_t vm_page_purged_count; /* How many pages got purged so far ? */
-decl_mutex_data(,vm_page_queue_lock)
- /* lock on active and inactive page queues */
-decl_mutex_data(,vm_page_queue_free_lock)
- /* lock on free page queue array (ie, all colors) */
-
extern unsigned int vm_page_free_wanted;
/* how many threads are waiting for memory */
extern unsigned int vm_page_free_wanted_privileged;
/* how many VM privileged threads are waiting for memory */
-extern vm_offset_t vm_page_fictitious_addr;
+extern ppnum_t vm_page_fictitious_addr;
/* (fake) phys_addr of fictitious pages */
-extern vm_offset_t vm_page_guard_addr;
+extern ppnum_t vm_page_guard_addr;
/* (fake) phys_addr of guard pages */
extern boolean_t vm_page_deactivate_hint;
-// 0 = all pages avail, 1 = disable high mem, 2 = prefer himem
+extern int vm_compressor_mode;
+
+/*
+ 0 = all pages avail ( default. )
+ 1 = disable high mem ( cap max pages to 4G)
+ 2 = prefer himem
+*/
extern int vm_himemory_mode;
-extern ppnum_t vm_lopage_poolend;
-extern int vm_lopage_poolsize;
+extern boolean_t vm_lopage_needed;
+extern uint32_t vm_lopage_free_count;
+extern uint32_t vm_lopage_free_limit;
+extern uint32_t vm_lopage_lowater;
+extern boolean_t vm_lopage_refill;
extern uint64_t max_valid_dma_address;
-
+extern ppnum_t max_valid_low_ppnum;
/*
* Prototypes for functions exported by this module.
*/
extern void vm_page_bootstrap(
vm_offset_t *startp,
- vm_offset_t *endp) __attribute__((section("__TEXT, initcode")));
+ vm_offset_t *endp);
-extern void vm_page_module_init(void) __attribute__((section("__TEXT, initcode")));
+extern void vm_page_module_init(void);
+extern void vm_page_init_local_q(void);
+
extern void vm_page_create(
ppnum_t start,
ppnum_t end);
extern void vm_page_init(
vm_page_t page,
- ppnum_t phys_page);
+ ppnum_t phys_page,
+ boolean_t lopage);
extern void vm_page_free(
- vm_page_t page);
+ vm_page_t page);
-extern void vm_page_free_prepare(
- vm_page_t page);
+extern void vm_page_free_unlocked(
+ vm_page_t page,
+ boolean_t remove_from_hash);
extern void vm_page_activate(
vm_page_t page);
extern void vm_page_deactivate(
vm_page_t page);
+extern void vm_page_deactivate_internal(
+ vm_page_t page,
+ boolean_t clear_hw_reference);
+
+extern void vm_page_enqueue_cleaned(vm_page_t page);
+
extern void vm_page_lru(
vm_page_t page);
extern void vm_page_speculate_ageit(
struct vm_speculative_age_q *aq);
+extern void vm_page_reactivate_all_throttled(void);
+
+extern void vm_page_reactivate_local(uint32_t lid, boolean_t force, boolean_t nolocks);
+
extern void vm_page_rename(
vm_page_t page,
vm_object_t new_object,
vm_object_offset_t offset);
extern void vm_page_insert_internal(
- vm_page_t page,
+ vm_page_t page,
vm_object_t object,
vm_object_offset_t offset,
- boolean_t queues_lock_held);
+ boolean_t queues_lock_held,
+ boolean_t insert_in_hash,
+ boolean_t batch_pmap_op);
extern void vm_page_replace(
vm_page_t mem,
vm_object_offset_t offset);
extern void vm_page_remove(
- vm_page_t page);
+ vm_page_t page,
+ boolean_t remove_from_hash);
extern void vm_page_zero_fill(
vm_page_t page);
vm_page_t page);
extern void vm_page_unwire(
- vm_page_t page);
+ vm_page_t page,
+ boolean_t queueit);
extern void vm_set_page_size(void);
vm_page_t page,
const void *kaddr);
+extern void vm_page_free_prepare_queues(
+ vm_page_t page);
+
+extern void vm_page_free_prepare_object(
+ vm_page_t page,
+ boolean_t remove_from_hash);
+
+#if CONFIG_IOSCHED
+extern wait_result_t vm_page_sleep(
+ vm_object_t object,
+ vm_page_t m,
+ int interruptible);
+#endif
+
+extern void vm_pressure_response(void);
+
+#if CONFIG_JETSAM
+extern void memorystatus_pages_update(unsigned int pages_avail);
+
+#define VM_CHECK_MEMORYSTATUS do { \
+ memorystatus_pages_update( \
+ vm_page_pageable_external_count + \
+ vm_page_free_count + \
+ (VM_DYNAMIC_PAGING_ENABLED(memory_manager_default) ? 0 : vm_page_purgeable_count) \
+ ); \
+ } while(0)
+
+#else /* CONFIG_JETSAM */
+
+
+#define VM_CHECK_MEMORYSTATUS vm_pressure_response()
+
+
+#endif /* CONFIG_JETSAM */
+
/*
* Functions implemented as macros. m->wanted and m->busy are
* protected by the object lock.
*/
+#define SET_PAGE_DIRTY(m, set_pmap_modified) \
+ MACRO_BEGIN \
+ vm_page_t __page__ = (m); \
+ __page__->dirty = TRUE; \
+ MACRO_END
+
#define PAGE_ASSERT_WAIT(m, interruptible) \
(((m)->wanted = TRUE), \
assert_wait((event_t) (m), (interruptible)))
+#if CONFIG_IOSCHED
#define PAGE_SLEEP(o, m, interruptible) \
- (((m)->wanted = TRUE), \
- thread_sleep_vm_object((o), (m), (interruptible)))
+ vm_page_sleep(o, m, interruptible)
+#else
+#define PAGE_SLEEP(o, m, interruptible) \
+ (((m)->wanted = TRUE), \
+ thread_sleep_vm_object((o), (m), (interruptible)))
+#endif
#define PAGE_WAKEUP_DONE(m) \
MACRO_BEGIN \
#define VM_PAGE_FREE(p) \
MACRO_BEGIN \
- vm_page_lock_queues(); \
- vm_page_free(p); \
- vm_page_unlock_queues(); \
+ vm_page_free_unlocked(p, TRUE); \
MACRO_END
#define VM_PAGE_GRAB_FICTITIOUS(M) \
vm_page_more_fictitious(); \
MACRO_END
-#define VM_PAGE_ZFILL_THROTTLED() \
- (vm_page_free_count < vm_page_free_min && \
- !(current_thread()->options & TH_OPT_VMPRIV) && \
- ++vm_page_zfill_throttle_count)
-
#define VM_PAGE_WAIT() ((void)vm_page_wait(THREAD_UNINT))
-#define vm_page_lock_queues() mutex_lock(&vm_page_queue_lock)
-#define vm_page_unlock_queues() mutex_unlock(&vm_page_queue_lock)
+#define vm_page_queue_lock (vm_page_locks.vm_page_queue_lock2)
+#define vm_page_queue_free_lock (vm_page_locks.vm_page_queue_free_lock2)
+
+#define vm_page_lock_queues() lck_mtx_lock(&vm_page_queue_lock)
+#define vm_page_unlock_queues() lck_mtx_unlock(&vm_page_queue_lock)
+
+#define vm_page_lockspin_queues() lck_mtx_lock_spin(&vm_page_queue_lock)
+#define vm_page_trylockspin_queues() lck_mtx_try_lock_spin(&vm_page_queue_lock)
+#define vm_page_lockconvert_queues() lck_mtx_convert_spin(&vm_page_queue_lock)
+
+#ifdef VPL_LOCK_SPIN
+#define VPL_LOCK_INIT(vlq, vpl_grp, vpl_attr) lck_spin_init(&vlq->vpl_lock, vpl_grp, vpl_attr)
+#define VPL_LOCK(vpl) lck_spin_lock(vpl)
+#define VPL_UNLOCK(vpl) lck_spin_unlock(vpl)
+#else
+#define VPL_LOCK_INIT(vlq, vpl_grp, vpl_attr) lck_mtx_init_ext(&vlq->vpl_lock, &vlq->vpl_lock_ext, vpl_grp, vpl_attr)
+#define VPL_LOCK(vpl) lck_mtx_lock_spin(vpl)
+#define VPL_UNLOCK(vpl) lck_mtx_unlock(vpl)
+#endif
+
+#if MACH_ASSERT
+extern void vm_page_queues_assert(vm_page_t mem, int val);
+#define VM_PAGE_QUEUES_ASSERT(mem, val) vm_page_queues_assert((mem), (val))
+#else
+#define VM_PAGE_QUEUES_ASSERT(mem, val)
+#endif
-#define vm_page_lockspin_queues() mutex_lock_spin(&vm_page_queue_lock)
+
+/*
+ * '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.
+ */
#define VM_PAGE_QUEUES_REMOVE(mem) \
MACRO_BEGIN \
- assert(!mem->laundry); \
- if (mem->active) { \
+ boolean_t was_pageable; \
+ \
+ VM_PAGE_QUEUES_ASSERT(mem, 1); \
+ assert(!mem->pageout_queue); \
+/* \
+ * if (mem->pageout_queue) \
+ * 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 \
+ */ \
+ if (mem->local) { \
+ struct vpl *lq; \
+ assert(mem->object != kernel_object); \
+ assert(mem->object != compressor_object); \
+ assert(!mem->inactive && !mem->speculative); \
+ assert(!mem->active && !mem->throttled); \
+ assert(!mem->clean_queue); \
+ assert(!mem->fictitious); \
+ lq = &vm_page_local_q[mem->local_id].vpl_un.vpl; \
+ VPL_LOCK(&lq->vpl_lock); \
+ queue_remove(&lq->vpl_queue, \
+ mem, vm_page_t, pageq); \
+ mem->local = FALSE; \
+ mem->local_id = 0; \
+ lq->vpl_count--; \
+ if (mem->object->internal) { \
+ lq->vpl_internal_count--; \
+ } else { \
+ lq->vpl_external_count--; \
+ } \
+ VPL_UNLOCK(&lq->vpl_lock); \
+ was_pageable = FALSE; \
+ } \
+ \
+ else if (mem->active) { \
assert(mem->object != kernel_object); \
+ assert(mem->object != compressor_object); \
assert(!mem->inactive && !mem->speculative); \
+ assert(!mem->clean_queue); \
assert(!mem->throttled); \
+ assert(!mem->fictitious); \
queue_remove(&vm_page_queue_active, \
mem, vm_page_t, pageq); \
mem->active = FALSE; \
- if (!mem->fictitious) { \
- vm_page_active_count--; \
- } else { \
- assert(mem->phys_page == \
- vm_page_fictitious_addr); \
- } \
+ vm_page_active_count--; \
+ was_pageable = TRUE; \
} \
\
else if (mem->inactive) { \
assert(mem->object != kernel_object); \
+ assert(mem->object != compressor_object); \
assert(!mem->active && !mem->speculative); \
assert(!mem->throttled); \
- if (mem->zero_fill) { \
- queue_remove(&vm_page_queue_zf, \
- mem, vm_page_t, pageq); \
- vm_zf_queue_count--; \
+ assert(!mem->fictitious); \
+ vm_page_inactive_count--; \
+ if (mem->clean_queue) { \
+ queue_remove(&vm_page_queue_cleaned, \
+ mem, vm_page_t, pageq); \
+ mem->clean_queue = FALSE; \
+ vm_page_cleaned_count--; \
} else { \
- queue_remove(&vm_page_queue_inactive, \
- mem, vm_page_t, pageq); \
- } \
- mem->inactive = FALSE; \
- if (!mem->fictitious) { \
- vm_page_inactive_count--; \
+ if (mem->object->internal) { \
+ queue_remove(&vm_page_queue_anonymous, \
+ mem, vm_page_t, pageq); \
+ vm_page_anonymous_count--; \
+ } else { \
+ queue_remove(&vm_page_queue_inactive, \
+ mem, vm_page_t, pageq); \
+ } \
vm_purgeable_q_advance_all(); \
- } else { \
- assert(mem->phys_page == \
- vm_page_fictitious_addr); \
} \
+ mem->inactive = FALSE; \
+ was_pageable = TRUE; \
} \
\
else if (mem->throttled) { \
+ assert(mem->object != compressor_object); \
assert(!mem->active && !mem->inactive); \
assert(!mem->speculative); \
+ assert(!mem->fictitious); \
queue_remove(&vm_page_queue_throttled, \
mem, vm_page_t, pageq); \
mem->throttled = FALSE; \
- if (!mem->fictitious) \
- vm_page_throttled_count--; \
+ vm_page_throttled_count--; \
+ was_pageable = FALSE; \
} \
\
else if (mem->speculative) { \
+ assert(mem->object != compressor_object); \
assert(!mem->active && !mem->inactive); \
assert(!mem->throttled); \
assert(!mem->fictitious); \
remque(&mem->pageq); \
mem->speculative = FALSE; \
vm_page_speculative_count--; \
+ was_pageable = TRUE; \
} \
+ \
+ else if (mem->pageq.next || mem->pageq.prev) { \
+ was_pageable = FALSE; \
+ panic("VM_PAGE_QUEUES_REMOVE: unmarked page on Q"); \
+ } else { \
+ was_pageable = FALSE; \
+ } \
+ \
mem->pageq.next = NULL; \
mem->pageq.prev = NULL; \
+ VM_PAGE_QUEUES_ASSERT(mem, 0); \
+ if (was_pageable) { \
+ if (mem->object->internal) { \
+ vm_page_pageable_internal_count--; \
+ } else { \
+ vm_page_pageable_external_count--; \
+ } \
+ } \
+ MACRO_END
+
+
+#define VM_PAGE_ENQUEUE_INACTIVE(mem, first) \
+ MACRO_BEGIN \
+ VM_PAGE_QUEUES_ASSERT(mem, 0); \
+ assert(!mem->fictitious); \
+ assert(!mem->laundry); \
+ assert(!mem->pageout_queue); \
+ if (mem->object->internal) { \
+ if (first == TRUE) \
+ queue_enter_first(&vm_page_queue_anonymous, mem, vm_page_t, pageq); \
+ else \
+ queue_enter(&vm_page_queue_anonymous, mem, vm_page_t, pageq); \
+ vm_page_anonymous_count++; \
+ vm_page_pageable_internal_count++; \
+ } else { \
+ if (first == TRUE) \
+ queue_enter_first(&vm_page_queue_inactive, mem, vm_page_t, pageq); \
+ else \
+ queue_enter(&vm_page_queue_inactive, mem, vm_page_t, pageq); \
+ vm_page_pageable_external_count++; \
+ } \
+ mem->inactive = TRUE; \
+ vm_page_inactive_count++; \
+ token_new_pagecount++; \
+ MACRO_END
+
+
+#if DEVELOPMENT || DEBUG
+#define VM_PAGE_SPECULATIVE_USED_ADD() \
+ MACRO_BEGIN \
+ OSAddAtomic(1, &vm_page_speculative_used); \
MACRO_END
+#else
+#define VM_PAGE_SPECULATIVE_USED_ADD()
+#endif
#define VM_PAGE_CONSUME_CLUSTERED(mem) \
MACRO_BEGIN \
+ pmap_lock_phys_page(mem->phys_page); \
if (mem->clustered) { \
assert(mem->object); \
mem->object->pages_used++; \
mem->clustered = FALSE; \
- OSAddAtomic(1, (SInt32 *)&vm_page_speculative_used); \
+ VM_PAGE_SPECULATIVE_USED_ADD(); \
} \
+ pmap_unlock_phys_page(mem->phys_page); \
MACRO_END
+
+#define VM_PAGE_COUNT_AS_PAGEIN(mem) \
+ MACRO_BEGIN \
+ DTRACE_VM2(pgin, int, 1, (uint64_t *), NULL); \
+ current_task()->pageins++; \
+ if (mem->object->internal) { \
+ DTRACE_VM2(anonpgin, int, 1, (uint64_t *), NULL); \
+ } else { \
+ DTRACE_VM2(fspgin, int, 1, (uint64_t *), NULL); \
+ } \
+ MACRO_END
+
+
+#define DW_vm_page_unwire 0x01
+#define DW_vm_page_wire 0x02
+#define DW_vm_page_free 0x04
+#define DW_vm_page_activate 0x08
+#define DW_vm_page_deactivate_internal 0x10
+#define DW_vm_page_speculate 0x20
+#define DW_vm_page_lru 0x40
+#define DW_vm_pageout_throttle_up 0x80
+#define DW_PAGE_WAKEUP 0x100
+#define DW_clear_busy 0x200
+#define DW_clear_reference 0x400
+#define DW_set_reference 0x800
+#define DW_move_page 0x1000
+#define DW_VM_PAGE_QUEUES_REMOVE 0x2000
+#define DW_enqueue_cleaned 0x4000
+#define DW_vm_phantom_cache_update 0x8000
+
+struct vm_page_delayed_work {
+ vm_page_t dw_m;
+ int dw_mask;
+};
+
+void vm_page_do_delayed_work(vm_object_t object, struct vm_page_delayed_work *dwp, int dw_count);
+
+extern unsigned int vm_max_delayed_work_limit;
+
+#define DEFAULT_DELAYED_WORK_LIMIT 32
+
+#define DELAYED_WORK_LIMIT(max) ((vm_max_delayed_work_limit >= max ? max : vm_max_delayed_work_limit))
+
+/*
+ * vm_page_do_delayed_work may need to drop the object lock...
+ * if it does, we need the pages it's looking at to
+ * be held stable via the busy bit, so if busy isn't already
+ * set, we need to set it and ask vm_page_do_delayed_work
+ * to clear it and wakeup anyone that might have blocked on
+ * it once we're done processing the page.
+ */
+
+#define VM_PAGE_ADD_DELAYED_WORK(dwp, mem, dw_cnt) \
+ MACRO_BEGIN \
+ if (mem->busy == FALSE) { \
+ mem->busy = TRUE; \
+ if ( !(dwp->dw_mask & DW_vm_page_free)) \
+ dwp->dw_mask |= (DW_clear_busy | DW_PAGE_WAKEUP); \
+ } \
+ dwp->dw_m = mem; \
+ dwp++; \
+ dw_cnt++; \
+ MACRO_END
+
+extern vm_page_t vm_object_page_grab(vm_object_t);
+
+#if VM_PAGE_BUCKETS_CHECK
+extern void vm_page_buckets_check(void);
+#endif /* VM_PAGE_BUCKETS_CHECK */
+
#endif /* _VM_VM_PAGE_H_ */
projects / apple / xnu.git / blobdiff