2 files changed, 14 insertions, 5 deletions

diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index 7daafdc2514b..7f28c32d9aca 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -149,19 +149,27 @@ struct execute_work {
 
 extern struct workqueue_struct *
 __create_workqueue_key(const char *name, int singlethread,
-                       int freezeable, struct lock_class_key *key);
+                       int freezeable, struct lock_class_key *key,
+                       const char *lock_name);
 
 #ifdef CONFIG_LOCKDEP
 #define __create_workqueue(name, singlethread, freezeable)      \
 ({                                                              \
         static struct lock_class_key __key;                     \
+        const char *__lock_name;                                \
+                                                                \
+        if (__builtin_constant_p(name))                         \
+                __lock_name = (name);                           \
+        else                                                    \
+                __lock_name = #name;                            \
                                                                 \
         __create_workqueue_key((name), (singlethread),          \
-                               (freezeable), &__key);           \
+                               (freezeable), &__key,            \
+                               __lock_name);                    \
 })
 #else
 #define __create_workqueue(name, singlethread, freezeable)      \
-        __create_workqueue_key((name), (singlethread), (freezeable), NULL)
+        __create_workqueue_key((name), (singlethread), (freezeable), NULL, NULL)
 #endif
 
 #define create_workqueue(name) __create_workqueue((name), 0, 0)
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 52d5e7c9a8e6..8db0b597509e 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -722,7 +722,8 @@ static void start_workqueue_thread(struct cpu_workqueue_struct *cwq, int cpu)
 struct workqueue_struct *__create_workqueue_key(const char *name,
                                                 int singlethread,
                                                 int freezeable,
-                                                struct lock_class_key *key)
+                                                struct lock_class_key *key,
+                                                const char *lock_name)
 {
         struct workqueue_struct *wq;
         struct cpu_workqueue_struct *cwq;
@@ -739,7 +740,7 @@ struct workqueue_struct *__create_workqueue_key(const char *name,
         }
 
         wq->name = name;
-        lockdep_init_map(&wq->lockdep_map, name, key, 0);
+        lockdep_init_map(&wq->lockdep_map, lock_name, key, 0);
         wq->singlethread = singlethread;
         wq->freezeable = freezeable;
         INIT_LIST_HEAD(&wq->list);