diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 4679e237a7f5..f7517e1b73f8 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -708,15 +708,15 @@ TAG_FILES= ../../include/uapi/linux/perf_event.h
 
 TAGS:
 	$(QUIET_GEN)$(RM) TAGS; \
-	$(FIND) $(TAG_FOLDERS) -name '*.[hcS]' -print | xargs etags -a $(TAG_FILES)
+	$(FIND) $(TAG_FOLDERS) -name '*.[hcS]' -print -o -name '*.cpp' -print | xargs etags -a $(TAG_FILES)
 
 tags:
 	$(QUIET_GEN)$(RM) tags; \
-	$(FIND) $(TAG_FOLDERS) -name '*.[hcS]' -print | xargs ctags -a $(TAG_FILES)
+	$(FIND) $(TAG_FOLDERS) -name '*.[hcS]' -print -o -name '*.cpp' -print | xargs ctags -a $(TAG_FILES)
 
 cscope:
 	$(QUIET_GEN)$(RM) cscope*; \
-	$(FIND) $(TAG_FOLDERS) -name '*.[hcS]' -print | xargs cscope -b $(TAG_FILES)
+	$(FIND) $(TAG_FOLDERS) -name '*.[hcS]' -print -o -name '*.cpp' -print | xargs cscope -b $(TAG_FILES)
 
 ### Testing rules