diff options
Diffstat (limited to 'sys/vm/vm_page.h')
| -rw-r--r-- | sys/vm/vm_page.h | 106 |
1 files changed, 63 insertions, 43 deletions
diff --git a/sys/vm/vm_page.h b/sys/vm/vm_page.h index 072c6a29ba70..33ada305990b 100644 --- a/sys/vm/vm_page.h +++ b/sys/vm/vm_page.h @@ -34,7 +34,7 @@ * SUCH DAMAGE. * * from: @(#)vm_page.h 7.3 (Berkeley) 4/21/91 - * $Id: vm_page.h,v 1.2 1993/10/16 16:20:46 rgrimes Exp $ + * $Id: vm_page.h,v 1.8 1994/01/31 04:21:19 davidg Exp $ */ /* @@ -96,58 +96,53 @@ * queues (P). */ +#define PG_INACTIVE 0x0001 +#define PG_ACTIVE 0x0002 +#define PG_LAUNDRY 0x0004 +#define PG_CLEAN 0x0008 +#define PG_BUSY 0x0010 +#define PG_WANTED 0x0020 +#define PG_TABLED 0x0040 +#define PG_COPY_ON_WRITE 0x0080 +#define PG_FICTITIOUS 0x0100 +#define PG_ABSENT 0x0200 +#define PG_FAKE 0x0400 +#define PG_PAGEROWNED 0x0800 +#define PG_PTPAGE 0x1000 + 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 hashq; /* hash table links (O)*/ queue_chain_t listq; /* all pages in same object (O)*/ vm_object_t object; /* which object am I in (O,P)*/ vm_offset_t offset; /* offset into that object (O,P) */ - unsigned int wire_count:16, /* how many wired down maps use me? - (P) */ - /* boolean_t */ inactive:1, /* page is in inactive list (P) */ - active:1, /* page is in active list (P) */ - laundry:1, /* page is being cleaned now (P)*/ -#ifdef DEBUG - pagerowned:1, /* async paging op in progress */ - ptpage:1, /* is a user page table page */ -#endif - :0; /* (force to 'long' boundary) */ -#ifdef ns32000 - int pad; /* extra space for ns32000 bit ops */ -#endif ns32000 - boolean_t clean; /* page has not been modified */ - unsigned int - /* 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) */ - copy_on_write:1,/* page must be copied before being - changed (O) */ - fictitious:1, /* physical page doesn't exist (O) */ - absent:1, /* virtual page doesn't exist (O) */ - fake:1, /* page is a placeholder for page-in - (O) */ - :0; + unsigned int wire_count; /* how many wired down maps use me? */ + unsigned short flags; /* bit encoded flags */ + unsigned short deact; /* deactivation count */ vm_offset_t phys_addr; /* physical address of page */ - vm_prot_t page_lock; /* Uses prohibited by data manager */ - vm_prot_t unlock_request; /* Outstanding unlock request */ }; typedef struct vm_page *vm_page_t; +#define DEACT_START 5 +#define DEACT_DELAY 2 +#define DEACT_CLEAN 1 +#define DEACT_FREE 0 + #if VM_PAGE_DEBUG #define VM_PAGE_CHECK(mem) { \ - if ( (((unsigned int) mem) < ((unsigned int) &vm_page_array[0])) || \ + if ((((unsigned int) mem) < ((unsigned int) &vm_page_array[0])) || \ (((unsigned int) mem) > ((unsigned int) &vm_page_array[last_page-first_page])) || \ - (mem->active && mem->inactive) \ + ((mem->flags & PG_ACTIVE) && (mem->flags & PG_INACTIVE)) \ ) panic("vm_page_check: not valid!"); \ } -#else VM_PAGE_DEBUG +#else /* VM_PAGE_DEBUG */ #define VM_PAGE_CHECK(mem) -#endif VM_PAGE_DEBUG +#endif /* VM_PAGE_DEBUG */ #ifdef KERNEL /* @@ -223,7 +218,6 @@ simple_lock_data_t vm_page_queue_free_lock; vm_offset_t vm_page_startup(); vm_page_t vm_page_lookup(); vm_page_t vm_page_alloc(); -void vm_page_init(); void vm_page_free(); void vm_page_activate(); void vm_page_deactivate(); @@ -236,21 +230,20 @@ void vm_page_copy(); void vm_page_wire(); void vm_page_unwire(); -void vm_set_page_size(); /* * Functions implemented as macros */ #define PAGE_ASSERT_WAIT(m, interruptible) { \ - (m)->wanted = TRUE; \ + (m)->flags |= PG_WANTED; \ assert_wait((int) (m), (interruptible)); \ } #define PAGE_WAKEUP(m) { \ - (m)->busy = FALSE; \ - if ((m)->wanted) { \ - (m)->wanted = FALSE; \ + (m)->flags &= ~PG_BUSY; \ + if ((m)->flags & PG_WANTED) { \ + (m)->flags &= ~PG_WANTED; \ thread_wakeup((int) (m)); \ } \ } @@ -258,6 +251,33 @@ void vm_set_page_size(); #define vm_page_lock_queues() simple_lock(&vm_page_queue_lock) #define vm_page_unlock_queues() simple_unlock(&vm_page_queue_lock) -#define vm_page_set_modified(m) { (m)->clean = FALSE; } -#endif KERNEL -#endif _VM_PAGE_ +#define vm_page_set_modified(m) { (m)->flags &= ~PG_CLEAN; } + +/* Some pmap things are declared here for the convenience of other bits of + code. */ +extern void pmap_bootstrap(vm_offset_t, vm_offset_t); +extern void pmap_init(vm_offset_t, vm_offset_t); +extern vm_offset_t pmap_map(vm_offset_t, vm_offset_t, vm_offset_t, int); +extern void pmap_remove_all(vm_offset_t); +extern void pmap_copy_on_write(vm_offset_t); +extern void pmap_page_protect(vm_offset_t, vm_prot_t); +extern void pmap_update(void); +extern void pmap_zero_page(vm_offset_t); +extern void pmap_copy_page(vm_offset_t, vm_offset_t); +extern void pmap_clear_modify(vm_offset_t); +extern void pmap_clear_reference(vm_offset_t); +extern boolean_t pmap_is_referenced(vm_offset_t); +extern boolean_t pmap_is_modified(vm_offset_t); +extern vm_offset_t pmap_phys_ddress(int); + + +/* + * these macros are *MUCH* faster on a 386/486 type machine + * eventually they need to be implemented correctly and put + * somewhere in the machine dependant stuff. + */ +#define vm_disable_intr() (disable_intr(), 0) +#define vm_set_intr(spl) enable_intr() + +#endif /* KERNEL */ +#endif /* _VM_PAGE_ */ |