v4.19.13 snapshot.
diff --git a/tools/lib/api/fs/Build b/tools/lib/api/fs/Build
new file mode 100644
index 0000000..f4ed962
--- /dev/null
+++ b/tools/lib/api/fs/Build
@@ -0,0 +1,2 @@
+libapi-y += fs.o
+libapi-y += tracing_path.o