1 files changed, 20 insertions, 0 deletions

diff --git a/include/linux/rculist.h b/include/linux/rculist.h
index 8089e35d47ac..f4b1001a4676 100644
--- a/include/linux/rculist.h
+++ b/include/linux/rculist.h
@@ -461,6 +461,26 @@ static inline void hlist_add_after_rcu(struct hlist_node *prev,
                         &(pos)->member)), typeof(*(pos)), member))
 
 /**
+ * hlist_for_each_entry_rcu_notrace - iterate over rcu list of given type (for tracing)
+ * @pos:        the type * to use as a loop cursor.
+ * @head:       the head for your list.
+ * @member:     the name of the hlist_node within the struct.
+ *
+ * This list-traversal primitive may safely run concurrently with
+ * the _rcu list-mutation primitives such as hlist_add_head_rcu()
+ * as long as the traversal is guarded by rcu_read_lock().
+ *
+ * This is the same as hlist_for_each_entry_rcu() except that it does
+ * not do any RCU debugging or tracing.
+ */
+#define hlist_for_each_entry_rcu_notrace(pos, head, member)                     \
+        for (pos = hlist_entry_safe (rcu_dereference_raw_notrace(hlist_first_rcu(head)),\
+                        typeof(*(pos)), member);                        \
+                pos;                                                    \
+                pos = hlist_entry_safe(rcu_dereference_raw_notrace(hlist_next_rcu(\
+                        &(pos)->member)), typeof(*(pos)), member))
+
+/**
  * hlist_for_each_entry_rcu_bh - iterate over rcu list of given type
  * @pos:        the type * to use as a loop cursor.
  * @head:       the head for your list.