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charmOS docs

Buddy allocator

include/mem/buddy.h View source View on GitHub

Structs

Section titled “Structs”

buddy_free_area

Section titled “buddy_free_area”
struct buddy_free_area {
    struct buddy_page  *head;
    struct buddy_page  *tail;
    uint64_t           nr_free;
};

Functions

Section titled “Functions”

buddy_add_to_free_area

Section titled “buddy_add_to_free_area”
void buddy_add_to_free_area(struct buddy_page *page, struct buddy_free_area *area);

buddy_remove_from_free_area

Section titled “buddy_remove_from_free_area”
struct buddy_page * buddy_remove_from_free_area(struct buddy_free_area *area);

buddy_alloc_pages_global

Section titled “buddy_alloc_pages_global”
paddr_t buddy_alloc_pages_global(size_t count, enum alloc_flags flags);

buddy_free_pages_global

Section titled “buddy_free_pages_global”
void buddy_free_pages_global(paddr_t addr, uint64_t count);

buddy_add_entry

Section titled “buddy_add_entry”
void buddy_add_entry(struct page *page_array, struct limine_memmap_entry *entry, struct buddy_free_area *farea);

buddy_reserve_range

Section titled “buddy_reserve_range”
void buddy_reserve_range(uint64_t pfn, uint64_t pages);

buddy_alloc_pages

Section titled “buddy_alloc_pages”
paddr_t buddy_alloc_pages(struct buddy_free_area *free_area, size_t count);

buddy_free_pages

Section titled “buddy_free_pages”
void buddy_free_pages(paddr_t addr, size_t count, struct buddy_free_area *free_area, size_t total_pages);

buddy_init

Section titled “buddy_init”
void buddy_init(void);

Macros

Section titled “Macros”

BUDDY_MAX_ORDER

Section titled “BUDDY_MAX_ORDER”
#define BUDDY_MAX_ORDER 18