Add a selftest that defines and traces a synthetic event that uses a
dynamic string event field.
Signed-off-by: Tom Zanussi <zanu...@kernel.org>
---
.../trigger-synthetic-event-dynstring.tc | 31 +++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644
tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-dynstring.tc
diff --git
a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-dynstring.tc
b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-dynstring.tc
new file mode 100644
index 000000000000..3d65c856eca3
--- /dev/null
+++
b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-dynstring.tc
@@ -0,0 +1,31 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test inter-event histogram trigger trace action
with dynamic string param
+# requires: set_event synthetic_events events/sched/sched_process_exec/hist
"char name[]' >> synthetic_events":README
+
+fail() { #msg
+ echo $1
+ exit_fail
+}
+
+echo "Test create synthetic event"
+
+echo 'ping_test_latency u64 lat; char filename[]' > synthetic_events
+if [ ! -d events/synthetic/ping_test_latency ]; then
+ fail "Failed to create ping_test_latency synthetic event"
+fi
+
+echo "Test create histogram for synthetic event using trace action and dynamic
strings"
+echo "Test histogram dynamic string variables,simple expression support and
trace action"
+
+echo 'hist:key=pid:filenamevar=filename:ts0=common_timestamp.usecs' >
events/sched/sched_process_exec/trigger
+echo
'hist:key=pid:lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_process_exec).ping_test_latency($lat,$filenamevar)
if comm == "ping"' > events/sched/sched_process_exit/trigger
+echo 'hist:keys=filename,lat:sort=filename,lat' >
events/synthetic/ping_test_latency/trigger
+
+ping $LOCALHOST -c 5
+
+if ! grep -q "ping" events/synthetic/ping_test_latency/hist; then
+ fail "Failed to create dynamic string trace action inter-event histogram"
+fi
+
+exit 0
--
2.17.1
