v4.19.13 snapshot.
diff --git a/include/linux/static_key.h b/include/linux/static_key.h
new file mode 100644
index 0000000..27bd3f8
--- /dev/null
+++ b/include/linux/static_key.h
@@ -0,0 +1 @@
+#include <linux/jump_label.h>