If building with clang then enable -Wthread-safety warnings.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/Makefile.config | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index c41a090c0652..72dadafdbad9 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -19,6 +19,11 @@ detected_var = $(shell echo "$(1)=$($(1))" >> $(OUTPUT).config-detected)
 CFLAGS := $(EXTRA_CFLAGS) $(filter-out -Wnested-externs,$(EXTRA_WARNINGS))
 HOSTCFLAGS := $(filter-out -Wnested-externs,$(EXTRA_WARNINGS))
 
+# Enabled Wthread-safety analysis for clang builds.
+ifeq ($(CC_NO_CLANG), 0)
+  CFLAGS += -Wthread-safety
+endif
+
 include $(srctree)/tools/scripts/Makefile.arch
 
 $(call detected_var,SRCARCH)
-- 
2.37.2.672.g94769d06f0-goog