tests/Makefile.am: Add a comment about the subtest infrastructure

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 1c4412c..f725fc9 100644 (file)
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -107,6 +107,9 @@ TESTS_scripts = \
        ZZ_hangman \
        $(NULL)
 
+# This target contains testcases which support automagic subtest enumeration
+# from the piglit testrunner with --list-subtests and running individual
+# subtests with --run-subtest <testname>
 multi_kernel_tests = \
        $(TESTS_progs_M) \
        $(TESTS_scripts_M) \