1 files changed, 53 insertions, 0 deletions

diff --git a/tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc b/tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc
new file mode 100644
index 000000000000..655c415b6e7f
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc
@@ -0,0 +1,53 @@
+#!/bin/sh
+# description: event tracing - enable/disable with subsystem level files
+
+do_reset() {
+    echo > set_event
+    clear_trace
+}
+
+fail() { #msg
+    do_reset
+    echo $1
+    exit -1
+}
+
+if [ ! -f set_event -o ! -d events/sched ]; then
+    echo "event tracing is not supported"
+    exit_unsupported
+fi
+
+reset_tracer
+do_reset
+
+echo 'sched:*' > set_event
+usleep 1
+
+count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
+if [ $count -lt 3 ]; then
+    fail "at least fork, exec and exit events should be recorded"
+fi
+
+do_reset
+
+echo 1 > events/sched/enable
+usleep 1
+
+count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
+if [ $count -lt 3 ]; then
+    fail "at least fork, exec and exit events should be recorded"
+fi
+
+do_reset
+
+echo 0 > events/sched/enable
+usleep 1
+
+count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
+if [ $count -ne 0 ]; then
+    fail "any of scheduler events should not be recorded"
+fi
+
+do_reset
+
+exit 0