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Buddy alloc now returns block size on liberation

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This commit is contained in:
Nathan Giddings
2023-09-08 03:54:05 -05:00
parent 217a73f2e9
commit e087e699c5
2 changed files with 6 additions and 4 deletions
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4
include/libmalloc/buddy_alloc.h
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@@ -45,9 +45,9 @@ unsigned long buddy_map_size(const memory_map_t *map, unsigned long block_size);
unsigned long buddy_reserve(buddy_descriptor_t *heap, unsigned long size);
void buddy_free(buddy_descriptor_t *heap, unsigned long location);
unsigned long buddy_free(buddy_descriptor_t *heap, unsigned long location);
void buddy_free_size(buddy_descriptor_t *heap, unsigned long size,
unsigned long buddy_free_size(buddy_descriptor_t *heap, unsigned long size,
unsigned long location);
int buddy_alloc_init(buddy_descriptor_t *heap, memory_map_t *map);

6
src/buddy_alloc.c
View File

@@ -83,19 +83,21 @@ unsigned long buddy_reserve(buddy_descriptor_t *heap, unsigned long size)
return NOMEM;
}
void buddy_free(buddy_descriptor_t *heap, unsigned long location)
unsigned long buddy_free(buddy_descriptor_t *heap, unsigned long location)
{
unsigned long index = (location - (unsigned long)heap->offset) / heap->block_size;
unsigned long k = llog2((heap->block_size * (1UL << heap->block_map[index].kval)) / heap->block_size);
insert_block(heap, index, k);
return (1UL << k) * heap->block_size;
}
void buddy_free_size(buddy_descriptor_t *heap, unsigned long location,
unsigned long buddy_free_size(buddy_descriptor_t *heap, unsigned long location,
unsigned long size)
{
unsigned long index = (location - (unsigned long)heap->offset) / heap->block_size;
unsigned long k = llog2(size / heap->block_size);
insert_block(heap, index, k);
return (1UL << k) * heap->block_size;
}
int buddy_alloc_init(buddy_descriptor_t *heap, memory_map_t *map)