mirrors/Astral
1
0
Fork 0
mirror of https://github.com/Mathewnd/Astral.git synced 2026-10-27 12:48:22 +00:00
Code Issues Packages Projects Releases Wiki Activity

slab: support creating slabs out of pmm

Browse Source
This commit is contained in:
Matheus
2026-04-22 19:45:46 -03:00
parent 804cd32fc5
commit e297e6d3ae
2 changed files with 19 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel-src/include/kernel/slab.h
+1
View File
@@ -59,6 +59,7 @@ typedef struct scache_t {
void *slab_allocate(scache_t *cache);
void slab_free(scache_t *cache, void *addr);
scache_t *slab_newcache(size_t size, size_t alignment, bool (*ctor)(scache_t *, void *), void (*dtor)(scache_t *, void *));
scache_t *slab_create_new_cache_from_pmm(size_t size, size_t alignment, bool (*ctor)(scache_t *, void *), void (*dtor)(scache_t *, void *));
void slab_freecache(scache_t *cache);
#endif
kernel-src/mm/slab.c
+18 -3
View File
@@ -462,6 +462,23 @@ static scache_t *create_new_from_vmm(size_t size, size_t alignment, bool (*ctor)
return cache;
}
scache_t *slab_create_new_cache_from_pmm(size_t size, size_t alignment, bool (*ctor)(scache_t *, void *), void (*dtor)(scache_t *, void *)) {
__assert(size < SLAB_INDIRECT_CUTOFF);
size_t cache_size = sizeof(scache_t) + sizeof(cache_per_cpu_t) * arch_smp_get_cpu_count();
scache_t *cache = pmm_alloc(ROUND_UP(cache_size, PAGE_SIZE) / PAGE_SIZE, PMM_SECTION_DEFAULT);
__assert(cache);
cache = MAKE_HHDM(cache);
__assert(slab_initialize(cache, size, alignment, ctor, dtor));
return cache;
}
// initializes enough to allow for the vmm to bootstrap
void slab_early_init(void) {
size_t magazine_object_size = sizeof(magazine_t) + sizeof(void *) * MAGAZINE_SIZE;
__assert(magazine_object_size < SLAB_INDIRECT_CUTOFF);
magazine_cache = slab_create_new_cache_from_pmm(magazine_object_size, 0, magazine_ctor, NULL);
}
// TODO dynamically change the size of magazines
void slab_init(void) {
size_t cache_size = sizeof(scache_t) + sizeof(cache_per_cpu_t) * arch_smp_get_cpu_count();
@@ -470,9 +487,7 @@ void slab_init(void) {
indirect_cache = create_new_from_vmm(sizeof(slab_indirect_t), 0, NULL, NULL);
indirect_table_cache = create_new_from_vmm(sizeof(slab_indirect_t *) * 32, 0, NULL, NULL);
self_cache = create_new_from_vmm(cache_size, 0, NULL, NULL);
magazine_cache = slab_newcache(sizeof(magazine_t) + sizeof(void *) * MAGAZINE_SIZE, 0, magazine_ctor, NULL);
__assert(magazine_cache);
}
INIT_ROUTINE_DEFINE(slab, INIT_ROUTINE_FLAGS_NONE, slab_init, vmm);
INIT_ROUTINE_DEFINE(slab_early, INIT_ROUTINE_FLAGS_NONE, slab_early_init, pmm);