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-rw-r--r--tools/testing/selftests/ring-buffer/Makefile1
1 files changed, 0 insertions, 1 deletions
diff --git a/tools/testing/selftests/ring-buffer/Makefile b/tools/testing/selftests/ring-buffer/Makefile
index 627c5fa6d1ab..23605782639e 100644
--- a/tools/testing/selftests/ring-buffer/Makefile
+++ b/tools/testing/selftests/ring-buffer/Makefile
@@ -1,7 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
CFLAGS += -Wl,-no-as-needed -Wall
CFLAGS += $(KHDR_INCLUDES)
-CFLAGS += -D_GNU_SOURCE
TEST_GEN_PROGS = map_test