kmem_slab_alloc
slab = kmem_slab_alloc(KMALLOC_SLAB_SIZE, KMALLOC_SLAB_SIZE,
z = kmem_slab_alloc(ZoneSize, ZoneSize, flags|M_ZERO);
ZeroPage = kmem_slab_alloc(PAGE_SIZE, PAGE_SIZE, M_WAITOK|M_ZERO);
chunk = kmem_slab_alloc(size, PAGE_SIZE, flags);
void *kmem_slab_alloc(vm_size_t bytes, vm_offset_t align, int flags);