tools headers UAPI: Sync drm/i915_drm.h with the kernel sources

[linux-2.6-microblaze.git] / mm / slub.c

diff --git a/mm/slub.c b/mm/slub.c
index b22a4b1..f5baf42 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3933,6 +3933,46 @@ int __kmem_cache_shutdown(struct kmem_cache *s)
        return 0;
 }
 
+void kmem_obj_info(struct kmem_obj_info *kpp, void *object, struct page *page)
+{
+       void *base;
+       int __maybe_unused i;
+       unsigned int objnr;
+       void *objp;
+       void *objp0;
+       struct kmem_cache *s = page->slab_cache;
+       struct track __maybe_unused *trackp;
+
+       kpp->kp_ptr = object;
+       kpp->kp_page = page;
+       kpp->kp_slab_cache = s;
+       base = page_address(page);
+       objp0 = kasan_reset_tag(object);
+#ifdef CONFIG_SLUB_DEBUG
+       objp = restore_red_left(s, objp0);
+#else
+       objp = objp0;
+#endif
+       objnr = obj_to_index(s, page, objp);
+       kpp->kp_data_offset = (unsigned long)((char *)objp0 - (char *)objp);
+       objp = base + s->size * objnr;
+       kpp->kp_objp = objp;
+       if (WARN_ON_ONCE(objp < base || objp >= base + page->objects * s->size || (objp - base) % s->size) ||
+           !(s->flags & SLAB_STORE_USER))
+               return;
+#ifdef CONFIG_SLUB_DEBUG
+       trackp = get_track(s, objp, TRACK_ALLOC);
+       kpp->kp_ret = (void *)trackp->addr;
+#ifdef CONFIG_STACKTRACE
+       for (i = 0; i < KS_ADDRS_COUNT && i < TRACK_ADDRS_COUNT; i++) {
+               kpp->kp_stack[i] = (void *)trackp->addrs[i];
+               if (!kpp->kp_stack[i])
+                       break;
+       }
+#endif
+#endif
+}
+
 /********************************************************************
  *             Kmalloc subsystem
  *******************************************************************/