| 51,7 → 51,6 |
|---|
| }; |
| |
| struct frame { |
| zone_t *zone; /**< host zone */ |
| count_t refcount; /**< when > 0, the frame is in busy list, otherwise the frame is in free list */ |
| link_t link; /**< link either to frame_zone free or busy list */ |
| }; |
| 59,39 → 58,20 |
|---|
| extern spinlock_t zone_head_lock; /**< this lock protects zone_head list */ |
| extern link_t zone_head; /**< list of all zones in the system */ |
| |
| extern count_t frames; |
| extern count_t frames_free; |
| extern void zone_init(void); |
| extern zone_t *zone_create(__address start, size_t size, int flags); |
| extern void zone_attach(zone_t *zone); |
| |
| extern count_t kernel_frames; |
| extern count_t kernel_frames_free; |
| |
| extern __u8 *frame_bitmap; |
| extern count_t frame_bitmap_octets; |
| |
| extern __u8 *frame_kernel_bitmap; |
| |
| extern void frame_init(void); |
| |
| extern void frame_initialize(frame_t *frame, zone_t *zone); |
| __address frame_alloc(int flags); |
| extern void frame_free(__address addr); |
| extern void frame_not_free(__address addr); |
| extern void frame_region_not_free(__address start, __address stop); |
| |
| extern void zone_init(void); |
| extern zone_t *zone_create(__address start, size_t size, int flags); |
| extern void zone_attach(zone_t *zone); |
| |
| extern void frame_initialize(frame_t *frame, zone_t *zone); |
| extern __address frame_get_address(frame_t *frame); |
| |
| /* |
| * TODO: Implement the following functions. |
| */ |
| |
| /* |
| extern frame_t *frame_alloc(int flags); |
| extern void frame_free(frame_t *frame); |
| */ |
| extern frame_t *frame_reference(frame_t *frame); |
| extern void frame_release(frame_t *frame); |
| |