lockdep_init_map(&(lock)->dep_map, #lock, \
(lock)->dep_map.key, sub)
+/*
+ * To initialize a lockdep_map statically use this macro.
+ * Note that _name must not be NULL.
+ */
+#define STATIC_LOCKDEP_MAP_INIT(_name, _key) \
+ { .name = (_name), .key = (void *)(_key), }
+
+
/*
* Acquire a lock.
*