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| author |   Tom Zanussi <zanussi@kernel.org> | 2020-10-04 17:14:08 -0500 |
|---|---|---|
| committer |   Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-10-08 15:28:41 -0400 |
| commit | cbcd9c83695e0f24c0497e6db8b73c3819ab08d4 (patch) | |
| tree | 28dce7caa56559897b8f2509bc63797bc72fba29 /tools/testing/selftests/ftrace | |
| parent | tracing: Add README information for synthetic_events file (diff) | |
| download | linux-dev-cbcd9c83695e0f24c0497e6db8b73c3819ab08d4.tar.xz linux-dev-cbcd9c83695e0f24c0497e6db8b73c3819ab08d4.zip | |
selftests/ftrace: Add test case for synthetic event dynamic strings
Add a selftest that defines and traces a synthetic event that uses a
dynamic string event field.
Link: https://lkml.kernel.org/r/74445afb005046d76d59fb06696a2ceaa164dec9.1601848695.git.zanussi@kernel.org
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Tom Zanussi <zanussi@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'tools/testing/selftests/ftrace')
| -rw-r--r-- | tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-dynstring.tc | 31 |
1 files changed, 31 insertions, 0 deletions
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 |