selftests: lib.mk: move running and printing result to a new function

RUN_TESTS function has grown and becoming harder to maintain. Move
the code that runs and tests for returns codes to a new function
and call it from RUN_TESTS.

A new RUN_TEST_PRINT_RESULT is created to simplify RUN_TESTS and make it
easier to add handling for other return codes as needed.
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>

tools/testing/selftests/lib.mk

@@ -19,14 +19,7 @@ TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES))
 all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)
 
 .ONESHELL:
-define RUN_TESTS
-	@export KSFT_TAP_LEVEL=`echo 1`;		\
-	test_num=`echo 0`;				\
-	skip=`echo 4`;					\
-	echo "TAP version 13";				\
-	for TEST in $(1); do				\
-		BASENAME_TEST=`basename $$TEST`;	\
-		test_num=`echo $$test_num+1 | bc`;	\
+define RUN_TEST_PRINT_RESULT
 	echo "selftests: $$BASENAME_TEST";	\
 	echo "========================================";	\
 	if [ ! -x $$TEST ]; then	\
@@ -50,7 +43,18 @@ define RUN_TESTS
 			fi;)		\
 		fi;				\
 		cd - > /dev/null;		\
-		fi;					\
+	fi;
+endef
+
+define RUN_TESTS
+	@export KSFT_TAP_LEVEL=`echo 1`;		\
+	test_num=`echo 0`;				\
+	skip=`echo 4`;					\
+	echo "TAP version 13";				\
+	for TEST in $(1); do				\
+		BASENAME_TEST=`basename $$TEST`;	\
+		test_num=`echo $$test_num+1 | bc`;	\
+		$(call RUN_TEST_PRINT_RESULT,$(TEST),$(BASENAME_TEST),$(test_num),$(skip))						\
 	done;
 endef