debugobjects: Provide and use free_object_list()

Move the loop to free a list of objects into a helper function so it can be
reused later.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20241007164913.453912357@linutronix.de

diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index fc54115..6ccdfeb 100644 (file)
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -125,6 +125,20 @@ static const char *obj_states[ODEBUG_STATE_MAX] = {
        [ODEBUG_STATE_NOTAVAILABLE]     = "not available",
 };
 
+static void free_object_list(struct hlist_head *head)
+{
+       struct hlist_node *tmp;
+       struct debug_obj *obj;
+       int cnt = 0;
+
+       hlist_for_each_entry_safe(obj, tmp, head, node) {
+               hlist_del(&obj->node);
+               kmem_cache_free(obj_cache, obj);
+               cnt++;
+       }
+       debug_objects_freed += cnt;
+}
+
 static void fill_pool(void)
 {
        gfp_t gfp = __GFP_HIGH | __GFP_NOWARN;
@@ -286,7 +300,6 @@ init_obj:
  */
 static void free_obj_work(struct work_struct *work)
 {
-       struct hlist_node *tmp;
        struct debug_obj *obj;
        unsigned long flags;
        HLIST_HEAD(tofree);
@@ -323,15 +336,11 @@ free_objs:
         */
        if (obj_nr_tofree) {
                hlist_move_list(&obj_to_free, &tofree);
-               debug_objects_freed += obj_nr_tofree;
                WRITE_ONCE(obj_nr_tofree, 0);
        }
        raw_spin_unlock_irqrestore(&pool_lock, flags);
 
-       hlist_for_each_entry_safe(obj, tmp, &tofree, node) {
-               hlist_del(&obj->node);
-               kmem_cache_free(obj_cache, obj);
-       }
+       free_object_list(&tofree);
 }
 
 static void __free_object(struct debug_obj *obj)
@@ -1334,6 +1343,7 @@ static bool __init debug_objects_replace_static_objects(struct kmem_cache *cache
        }
        return true;
 free:
+       /* Can't use free_object_list() as the cache is not populated yet */
        hlist_for_each_entry_safe(obj, tmp, &objects, node) {
                hlist_del(&obj->node);
                kmem_cache_free(cache, obj);