[PATCH v3 14/14] tracing/selftest: Add test to test hist trigger between kernel event and trace_marker
From: Steven Rostedt <rostedt@goodmis.org>
Date: 2018-05-16 15:02:41
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Subsystem:
kernel selftest framework, the rest, tracing · Maintainers:
Shuah Khan, Linus Torvalds, Steven Rostedt, Masami Hiramatsu
From: "Steven Rostedt (VMware)" <rostedt@goodmis.org> Add a test that tests a trigger that is initiated by a kernel event (sched_waking) and compared to a write to the trace_marker. Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> --- .../trigger/trigger-trace-marker-synthetic.tc | 22 +++++++++++++++++++ 1 file changed, 22 insertions(+)
diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-synthetic.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-synthetic.tc
index 3666dd6ab02a..b06996ecd5e0 100644
--- a/tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-synthetic.tc
+++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-synthetic.tc@@ -31,6 +31,11 @@ if [ ! -d events/ftrace/print ]; then exit_unsupported fi +if [ ! -d events/sched/sched_waking ]; then + echo "event sched_waking is not supported" + exit_unsupported +fi + if [ ! -f events/ftrace/print/trigger ]; then echo "event trigger is not supported" exit_unsupported
@@ -63,4 +68,21 @@ grep 'hitcount: *1$' events/synthetic/latency/hist > /dev/null || \ do_reset +echo "Test histogram kernel event to trace_marker latency histogram trigger" + +echo 'latency u64 lat' > synthetic_events +echo 'hist:keys=pid:ts0=common_timestamp.usecs' > events/sched/sched_waking/trigger +echo 'hist:keys=common_pid:lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).latency($lat)' > events/ftrace/print/trigger +echo 'hist:keys=common_pid,lat:sort=lat' > events/synthetic/latency/trigger +sleep 1 +echo "hello" > trace_marker + +grep 'hitcount: *1$' events/ftrace/print/hist > /dev/null || \ + fail "hist trigger did not trigger correct times on trace_marker" + +grep 'hitcount: *1$' events/synthetic/latency/hist > /dev/null || \ + fail "hist trigger did not trigger " + +do_reset + exit 0
--
2.17.0