42,11 → 42,12 |
#define FRAME2ADDR(zone, frame) ((zone)->base + ((frame) - (zone)->frames) * FRAME_SIZE) |
#define ADDR2FRAME(zone, addr) (&((zone)->frames[((addr) - (zone)->base) / FRAME_SIZE])) |
#define FRAME_INDEX(zone, frame) ((count_t)((frame) - (zone)->frames)) |
#define IS_BUDDY_LEFT_BLOCK(zone, frame) ((FRAME_INDEX((zone), (frame)) % (1 >> ((frame)->buddy_order + 1))) == 0) |
#define IS_BUDDY_RIGHT_BLOCK(zone, frame) ((FRAME_INDEX((zone), (frame)) % (1 >> ((frame)->buddy_order + 1))) == (1 >> (frame)->buddy_order)) |
#define FRAME_INDEX_VALID(zone, index) (((index) >= 0) && ((index) < ((zone)->free_count + (zone)->busy_count))) |
#define IS_BUDDY_LEFT_BLOCK(zone, frame) ((FRAME_INDEX((zone), (frame)) % (1 << ((frame)->buddy_order + 1))) == 0) |
#define IS_BUDDY_RIGHT_BLOCK(zone, frame) ((FRAME_INDEX((zone), (frame)) % (1 << ((frame)->buddy_order + 1))) == (1 << (frame)->buddy_order)) |
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#define ZONE_BLACKLIST_SIZE 3 |
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struct zone { |
link_t link; /**< link to previous and next zone */ |
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68,6 → 69,16 |
link_t buddy_link; /**< link to the next free block inside one order*/ |
}; |
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struct region { |
__address base; |
size_t size; |
}; |
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extern region_t zone_blacklist[]; |
extern count_t zone_blacklist_count; |
extern void frame_region_not_free(__address base, size_t size); |
extern void zone_create_in_region(__address base, size_t size); |
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extern spinlock_t zone_head_lock; /**< this lock protects zone_head list */ |
extern link_t zone_head; /**< list of all zones in the system */ |
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77,10 → 88,8 |
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extern void frame_init(void); |
extern void frame_initialize(frame_t *frame, zone_t *zone); |
__address frame_alloc(int flags); |
__address frame_alloc(int flags, __u8 order); |
extern void frame_free(__address addr); |
extern void frame_not_free(__address addr); |
extern void frame_region_not_free(__address start, __address stop); |
zone_t * get_zone_by_frame(frame_t * frame); |
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/* |
91,10 → 100,8 |
link_t * zone_buddy_coalesce(buddy_system_t *b, link_t * buddy_l, link_t * buddy_r); |
void zone_buddy_set_order(buddy_system_t *b, link_t * block, __u8 order); |
__u8 zone_buddy_get_order(buddy_system_t *b, link_t * block); |
void zone_buddy_mark_busy(buddy_system_t *b, link_t * block); |
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__address zone_buddy_frame_alloc(int flags, __u8 order); |
void zone_buddy_frame_free(__address addr); |
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/* |
* TODO: Implement the following functions. |
*/ |