| /* | |
| * Copyright 2017, Data61 | |
| * Commonwealth Scientific and Industrial Research Organisation (CSIRO) | |
| * ABN 41 687 119 230. | |
| * | |
| * This software may be distributed and modified according to the terms of | |
| * the BSD 2-Clause license. Note that NO WARRANTY is provided. | |
| * See "LICENSE_BSD2.txt" for details. | |
| * | |
| * @TAG(DATA61_BSD) | |
| */ | |
| #pragma once | |
| #include <vka/vka.h> | |
| #include <sel4/sel4.h> | |
| /* This is a delegating slab allocator which preallocates objects for | |
| * minimal cache collisions and maximal cache locality. | |
| * | |
| * Predefine the amount of objects and types required, | |
| * the allocator will sort them by size and | |
| * allocate from the start of an untyped, ensuring they | |
| * are adjacent. | |
| * | |
| * Initialise with another allocator to perform cspace allocation, | |
| * untyped allocation. | |
| * | |
| * When the slab allocator runs out, it will delegate any | |
| * further allocations. | |
| * | |
| * This allocator does not implement free, alloc_at, paddr or device related functions. | |
| */ | |
| /** | |
| * Initialise slab_vka | |
| * | |
| * @param slab_vka empty allocator to initialise | |
| * @param delegate initialised allocator to perform allocations with | |
| * @param object_freq frequency of objects required for slab allocation (indexed by object type). | |
| * @return 0 on success | |
| */ | |
| int slab_init(vka_t *slab_vka, vka_t *delegate, size_t object_freq[seL4_ObjectTypeCount]); |