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Fix slab allocator

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ssimnb 2026-04-07 09:10:53 +02:00
parent 3b08a6ce99
commit 0db98c358e
8 changed files with 185 additions and 314 deletions
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4
include/mm/kmalloc.h
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@ -4,6 +4,6 @@
void _kmalloc_init(void);
void *kmalloc(size_t size);
void *kzalloc(size_t size);
void *kmalloc(size_t size) __attribute__ ((alloc_size (1)));
void *kzalloc(size_t size) __attribute__ ((alloc_size (1)));
kstatus kfree(void *addr);

9
include/mm/slab.h
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@ -43,11 +43,16 @@ struct ma_cache {
uint16_t flags; // Not useful yet
uint32_t num; // Number of objects per slab
uint32_t slabsize; // How many pages does a single slab take up. Useful for objects > PAGE_SIZE
uint16_t color; // Max color of the slab
uint16_t color_next; // Next color to use
uint16_t alignment; // Alignment required of the objects. Default is 8 bytes if 0 is passed
struct ma_slab *slabs_free;
struct ma_slab *slabs_partial;
struct ma_slab *slabs_used;
void (*constructor)(void *, size_t);
void (*destructor)(void *, size_t);
atomic_flag lock;
char name[KCACHE_NAME_LEN];
@ -55,6 +60,6 @@ struct ma_cache {
void *ma_cache_alloc(struct ma_cache *kcache, uint32_t flags);
kstatus ma_cache_dealloc(void *object);
struct ma_cache *ma_cache_create(char *name, size_t size, uint32_t flags, void (*constructor)(void *, size_t), void (*destructor)(void *, size_t));
struct ma_cache *ma_cache_create(char *name, size_t size, uint32_t flags, uint16_t align, void (*constructor)(void *, size_t), void (*destructor)(void *, size_t));
void cache_info(struct ma_cache *cache);
void create_base_caches();

2
include/neobbo.h
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@ -27,6 +27,8 @@ typedef char link_symbol_ptr[];
#define SIZE_IN_PAGES(size) size/PAGE_SIZE
#define UNLIKELY(c) (__builtin_expect(c, 0))
struct kernel_info *get_kinfo();
void initialize_kinfo();
void kkill(void); // phase this out in favor of assert