diff options
Diffstat (limited to 'sys/vm/vm_page.h')
| -rw-r--r-- | sys/vm/vm_page.h | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/sys/vm/vm_page.h b/sys/vm/vm_page.h index 23637bb..e3eb08c 100644 --- a/sys/vm/vm_page.h +++ b/sys/vm/vm_page.h @@ -113,6 +113,20 @@ TAILQ_HEAD(pglist, vm_page); +#if PAGE_SIZE == 4096 +#define VM_PAGE_BITS_ALL 0xffu +typedef uint8_t vm_page_bits_t; +#elif PAGE_SIZE == 8192 +#define VM_PAGE_BITS_ALL 0xffffu +typedef uint16_t vm_page_bits_t; +#elif PAGE_SIZE == 16384 +#define VM_PAGE_BITS_ALL 0xffffffffu +typedef uint32_t vm_page_bits_t; +#elif PAGE_SIZE == 32768 +#define VM_PAGE_BITS_ALL 0xfffffffffffffffflu +typedef uint64_t vm_page_bits_t; +#endif + struct vm_page { TAILQ_ENTRY(vm_page) pageq; /* queue info for FIFO queue or free list (Q) */ TAILQ_ENTRY(vm_page) listq; /* pages in same object (O) */ @@ -137,20 +151,8 @@ struct vm_page { u_char busy; /* page busy count (O) */ /* NOTE that these must support one bit per DEV_BSIZE in a page!!! */ /* so, on normal X86 kernels, they must be at least 8 bits wide */ - /* In reality, support for 32KB pages is not fully implemented. */ -#if PAGE_SIZE == 4096 - uint8_t valid; /* map of valid DEV_BSIZE chunks (O) */ - uint8_t dirty; /* map of dirty DEV_BSIZE chunks (M) */ -#elif PAGE_SIZE == 8192 - uint16_t valid; /* map of valid DEV_BSIZE chunks (O) */ - uint16_t dirty; /* map of dirty DEV_BSIZE chunks (M) */ -#elif PAGE_SIZE == 16384 - uint32_t valid; /* map of valid DEV_BSIZE chunks (O) */ - uint32_t dirty; /* map of dirty DEV_BSIZE chunks (M) */ -#elif PAGE_SIZE == 32768 - uint64_t valid; /* map of valid DEV_BSIZE chunks (O) */ - uint64_t dirty; /* map of dirty DEV_BSIZE chunks (M) */ -#endif + vm_page_bits_t valid; /* map of valid DEV_BSIZE chunks (O) */ + vm_page_bits_t dirty; /* map of dirty DEV_BSIZE chunks (M) */ }; /* @@ -403,7 +405,7 @@ void vm_page_clear_dirty (vm_page_t, int, int); void vm_page_set_invalid (vm_page_t, int, int); int vm_page_is_valid (vm_page_t, int, int); void vm_page_test_dirty (vm_page_t); -int vm_page_bits (int, int); +vm_page_bits_t vm_page_bits(int base, int size); void vm_page_zero_invalid(vm_page_t m, boolean_t setvalid); void vm_page_free_toq(vm_page_t m); void vm_page_zero_idle_wakeup(void); |
