| 0,0 → 1,59 |
|---|
| |
| typedef struct |
| { |
| link_t buddy_link; /**< link to the next free block inside one order */ |
| count_t refcount; /**< tracking of shared frames */ |
| u32_t buddy_order; /**< buddy system block order */ |
| void *parent; /**< If allocated by slab, this points there */ |
| } frame_t; |
| |
| typedef struct { |
| SPINLOCK_DECLARE(lock); /**< this lock protects everything below */ |
| pfn_t base; /**< frame_no of the first frame in the frames array */ |
| count_t count; /**< Size of zone */ |
| |
| frame_t *frames; /**< array of frame_t structures in this zone */ |
| count_t free_count; /**< number of free frame_t structures */ |
| count_t busy_count; /**< number of busy frame_t structures */ |
| |
| u32_t max_order; |
| link_t order[21]; |
| |
| int flags; |
| } zone_t; |
| |
| |
| # define PA2KA(x) (((u32_t) (x)) + OS_BASE) |
| # define KA2PA(x) (((u32_t) (x)) - OS_BASE) |
| |
| #define PAGE_SIZE 4096 |
| #define FRAME_WIDTH 12 |
| |
| #define BUDDY_SYSTEM_INNER_BLOCK 0xff |
| |
| static inline count_t SIZE2FRAMES(size_t size) |
| { |
| if (!size) |
| return 0; |
| return (count_t) ((size - 1) >> FRAME_WIDTH) + 1; |
| } |
| |
| static inline addr_t PFN2ADDR(pfn_t frame) |
| { |
| return (addr_t) (frame << FRAME_WIDTH); |
| } |
| |
| static inline pfn_t ADDR2PFN(addr_t addr) |
| { |
| return (pfn_t) (addr >> FRAME_WIDTH); |
| }; |
| |
| void init_mm(); |
| |
| pfn_t core_alloc(u32_t order); |
| |
| pfn_t alloc_page() __attribute__ ((deprecated)); |
| pfn_t __stdcall alloc_pages(count_t count) __asm__ ("_alloc_pages") __attribute__ ((deprecated)); |
| |
| void core_free(pfn_t frame); |
| void frame_free(pfn_t frame); |