1 files changed, 36 insertions, 0 deletions
diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc
new file mode 100644
index 000000000..33f5bdee3
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc
@@ -0,0 +1,36 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test snapshot-trigger
+# requires: set_event events/sched/sched_process_fork/trigger snapshot
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+FEATURE=`grep snapshot events/sched/sched_process_fork/trigger`
+if [ -z "$FEATURE" ]; then
+    echo "snapshot trigger is not supported"
+    exit_unsupported
+fi
+
+echo "Test snapshot trigger"
+echo 0 > snapshot
+echo 1 > events/sched/sched_process_fork/enable
+( echo "forked")
+echo 'snapshot:1' > events/sched/sched_process_fork/trigger
+( echo "forked")
+grep sched_process_fork snapshot > /dev/null || \
+    fail "snapshot trigger on sched_process_fork did not work"
+
+reset_trigger
+echo 0 > snapshot
+echo 0 > events/sched/sched_process_fork/enable
+
+echo "Test snapshot semantic errors"
+
+! echo "snapshot+1" > events/sched/sched_process_fork/trigger
+echo "snapshot" > events/sched/sched_process_fork/trigger
+! echo "snapshot" > events/sched/sched_process_fork/trigger
+
+exit 0