--- zzzz-none-000/linux-2.6.39.4/include/linux/rcupdate.h	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/include/linux/rcupdate.h	2021-11-10 13:38:17.000000000 +0000
@@ -159,11 +159,11 @@
 extern void init_rcu_head_on_stack(struct rcu_head *head);
 extern void destroy_rcu_head_on_stack(struct rcu_head *head);
 #else /* !CONFIG_DEBUG_OBJECTS_RCU_HEAD */
-static inline void init_rcu_head_on_stack(struct rcu_head *head)
+static inline void init_rcu_head_on_stack(struct rcu_head *head __attribute__((unused)))
 {
 }
 
-static inline void destroy_rcu_head_on_stack(struct rcu_head *head)
+static inline void destroy_rcu_head_on_stack(struct rcu_head *head __attribute__((unused)))
 {
 }
 #endif	/* #else !CONFIG_DEBUG_OBJECTS_RCU_HEAD */
@@ -788,11 +788,11 @@
 	debug_object_deactivate(head, &rcuhead_debug_descr);
 }
 #else	/* !CONFIG_DEBUG_OBJECTS_RCU_HEAD */
-static inline void debug_rcu_head_queue(struct rcu_head *head)
+static inline void debug_rcu_head_queue(struct rcu_head *head __attribute__((unused)))
 {
 }
 
-static inline void debug_rcu_head_unqueue(struct rcu_head *head)
+static inline void debug_rcu_head_unqueue(struct rcu_head *head __attribute__((unused)))
 {
 }
 #endif	/* #else !CONFIG_DEBUG_OBJECTS_RCU_HEAD */