selftests/ftrace: Return unsupported if it detects older kernel
Return unsupported if the kernel is too old to support
instance independent ftrace filter for some testcases.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc
index aa31368..77dfb6b 100644
--- a/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc
+++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc
@@ -72,6 +72,15 @@
test_event_enabled $check_disable
echo "schedule:${enable}_event:$EVENT" > set_ftrace_filter
+ if [ -d ../../instances ]; then # Check instances
+ cur=`cat set_ftrace_filter`
+ top=`cat ../../set_ftrace_filter`
+ if [ "$cur" = "$top" ]; then
+ echo "This kernel is too old to support per instance filter"
+ reset_ftrace_filter
+ exit_unsupported
+ fi
+ fi
echo " make sure it works 5 times"
diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc
index 1b0817b..9cf3852 100644
--- a/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc
+++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc
@@ -75,6 +75,15 @@
echo '** SET TRACEOFF'
echo "$func:traceoff" > set_ftrace_filter
+if [ -d ../../instances ]; then # Check instances
+ cur=`cat set_ftrace_filter`
+ top=`cat ../../set_ftrace_filter`
+ if [ "$cur" = "$top" ]; then
+ echo "This kernel is too old to support per instance filter"
+ reset_ftrace_filter
+ exit_unsupported
+ fi
+fi
cnt=`grep schedule set_ftrace_filter | wc -l`
if [ $cnt -ne 1 ]; then
