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-rw-r--r--tools/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/Makefile b/tools/Makefile
index df6fcb293fbc..c03b4f69d5b7 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
# Some of the tools (perf) use same make variables
# as in kernel build.
export srctree=