diff options
Diffstat (limited to 'vm/vm_object.c')
| -rw-r--r-- | vm/vm_object.c | 87 |
1 files changed, 46 insertions, 41 deletions
diff --git a/vm/vm_object.c b/vm/vm_object.c index 1c6e431..d80124a 100644 --- a/vm/vm_object.c +++ b/vm/vm_object.c @@ -147,7 +147,8 @@ struct kmem_cache vm_object_cache; /* vm backing store cache */ * All wired-down kernel memory belongs to a single virtual * memory object (kernel_object) to avoid wasting data structures. */ -vm_object_t kernel_object; +static struct vm_object kernel_object_store; +vm_object_t kernel_object = &kernel_object_store; /* * Virtual memory objects that are not referenced by @@ -198,7 +199,7 @@ decl_simple_lock_data(,vm_object_cached_lock_data) * object structure, be sure to add initialization * (see vm_object_init). */ -vm_object_t vm_object_template; +struct vm_object vm_object_template; /* * vm_object_allocate: @@ -206,6 +207,16 @@ vm_object_t vm_object_template; * Returns a new object with the given size. */ +static void _vm_object_setup( + vm_object_t object, + vm_size_t size) +{ + *object = vm_object_template; + queue_init(&object->memq); + vm_object_lock_init(object); + object->size = size; +} + vm_object_t _vm_object_allocate( vm_size_t size) { @@ -213,10 +224,7 @@ vm_object_t _vm_object_allocate( object = (vm_object_t) kmem_cache_alloc(&vm_object_cache); - *object = *vm_object_template; - queue_init(&object->memq); - vm_object_lock_init(object); - object->size = size; + _vm_object_setup(object, size); return object; } @@ -254,53 +262,50 @@ void vm_object_bootstrap(void) * Fill in a template object, for quick initialization */ - vm_object_template = (vm_object_t) kmem_cache_alloc(&vm_object_cache); - memset(vm_object_template, 0, sizeof *vm_object_template); - - vm_object_template->ref_count = 1; - vm_object_template->size = 0; - vm_object_template->resident_page_count = 0; - vm_object_template->copy = VM_OBJECT_NULL; - vm_object_template->shadow = VM_OBJECT_NULL; - vm_object_template->shadow_offset = (vm_offset_t) 0; + vm_object_template.ref_count = 1; + vm_object_template.size = 0; + vm_object_template.resident_page_count = 0; + vm_object_template.copy = VM_OBJECT_NULL; + vm_object_template.shadow = VM_OBJECT_NULL; + vm_object_template.shadow_offset = (vm_offset_t) 0; - vm_object_template->pager = IP_NULL; - vm_object_template->paging_offset = 0; - vm_object_template->pager_request = PAGER_REQUEST_NULL; - vm_object_template->pager_name = IP_NULL; + vm_object_template.pager = IP_NULL; + vm_object_template.paging_offset = 0; + vm_object_template.pager_request = PAGER_REQUEST_NULL; + vm_object_template.pager_name = IP_NULL; - vm_object_template->pager_created = FALSE; - vm_object_template->pager_initialized = FALSE; - vm_object_template->pager_ready = FALSE; + vm_object_template.pager_created = FALSE; + vm_object_template.pager_initialized = FALSE; + vm_object_template.pager_ready = FALSE; - vm_object_template->copy_strategy = MEMORY_OBJECT_COPY_NONE; + vm_object_template.copy_strategy = MEMORY_OBJECT_COPY_NONE; /* ignored if temporary, will be reset before * permanent object becomes ready */ - vm_object_template->use_shared_copy = FALSE; - vm_object_template->shadowed = FALSE; - - vm_object_template->absent_count = 0; - vm_object_template->all_wanted = 0; /* all bits FALSE */ - - vm_object_template->paging_in_progress = 0; - vm_object_template->can_persist = FALSE; - vm_object_template->internal = TRUE; - vm_object_template->temporary = TRUE; - vm_object_template->alive = TRUE; - vm_object_template->lock_in_progress = FALSE; - vm_object_template->lock_restart = FALSE; - vm_object_template->use_old_pageout = TRUE; /* XXX change later */ - vm_object_template->last_alloc = (vm_offset_t) 0; + vm_object_template.use_shared_copy = FALSE; + vm_object_template.shadowed = FALSE; + + vm_object_template.absent_count = 0; + vm_object_template.all_wanted = 0; /* all bits FALSE */ + + vm_object_template.paging_in_progress = 0; + vm_object_template.can_persist = FALSE; + vm_object_template.internal = TRUE; + vm_object_template.temporary = TRUE; + vm_object_template.alive = TRUE; + vm_object_template.lock_in_progress = FALSE; + vm_object_template.lock_restart = FALSE; + vm_object_template.use_old_pageout = TRUE; /* XXX change later */ + vm_object_template.last_alloc = (vm_offset_t) 0; #if MACH_PAGEMAP - vm_object_template->existence_info = VM_EXTERNAL_NULL; + vm_object_template.existence_info = VM_EXTERNAL_NULL; #endif /* MACH_PAGEMAP */ /* * Initialize the "kernel object" */ - kernel_object = _vm_object_allocate( + _vm_object_setup(kernel_object, VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS); /* @@ -308,7 +313,7 @@ void vm_object_bootstrap(void) * kernel object so that no limit is imposed on submap sizes. */ - vm_submap_object = _vm_object_allocate( + _vm_object_setup(vm_submap_object, VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS); #if MACH_PAGEMAP |