diff options
Diffstat (limited to 'mm/slab.c')
| -rw-r--r-- | mm/slab.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/mm/slab.c b/mm/slab.c index d7c8da9319c7..dcc55e78f353 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -3635,6 +3635,26 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t flags, EXPORT_SYMBOL(__kmalloc_node_track_caller); #endif /* CONFIG_NUMA */ +void kmem_obj_info(struct kmem_obj_info *kpp, void *object, struct page *page) +{ + struct kmem_cache *cachep; + unsigned int objnr; + void *objp; + + kpp->kp_ptr = object; + kpp->kp_page = page; + cachep = page->slab_cache; + kpp->kp_slab_cache = cachep; + objp = object - obj_offset(cachep); + kpp->kp_data_offset = obj_offset(cachep); + page = virt_to_head_page(objp); + objnr = obj_to_index(cachep, page, objp); + objp = index_to_obj(cachep, page, objnr); + kpp->kp_objp = objp; + if (DEBUG && cachep->flags & SLAB_STORE_USER) + kpp->kp_ret = *dbg_userword(cachep, objp); +} + /** * __do_kmalloc - allocate memory * @size: how many bytes of memory are required. |