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author | 2018-05-14 15:38:57 -0400 | |
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committer | 2018-05-29 08:29:54 -0400 | |
commit | c349d4af86d6fd925b75d5a340011d17c321313f (patch) | |
tree | a38e837f5c29a547f14753a4d7d865afe1321e50 /tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-hist.tc | |
parent | ftrace/selftest: Fix reset_trigger() to handle triggers with filters (diff) | |
download | linux-dev-c349d4af86d6fd925b75d5a340011d17c321313f.tar.xz linux-dev-c349d4af86d6fd925b75d5a340011d17c321313f.zip |
tracing/selftest: Add selftests to test trace_marker histogram triggers
Add a couple of tests that test the trace_marker histogram triggers.
One does a straight histogram test, the other will create a synthetic event
and test the latency between two different writes (using filters to
differentiate between them).
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-hist.tc')
-rw-r--r-- | tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-hist.tc | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-hist.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-hist.tc new file mode 100644 index 000000000000..2acbfe2c0c0c --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-hist.tc @@ -0,0 +1,49 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: trace_marker trigger - test histogram trigger +# flags: instance + +do_reset() { + reset_trigger + echo > set_event + clear_trace +} + +fail() { #msg + do_reset + echo $1 + exit_fail +} + +if [ ! -f set_event ]; then + echo "event tracing is not supported" + exit_unsupported +fi + +if [ ! -d events/ftrace/print ]; then + echo "event trace_marker is not supported" + exit_unsupported +fi + +if [ ! -f events/ftrace/print/trigger ]; then + echo "event trigger is not supported" + exit_unsupported +fi + +if [ ! -f events/ftrace/print/hist ]; then + echo "hist trigger is not supported" + exit_unsupported +fi + +do_reset + +echo "Test histogram trace_marker tigger" + +echo 'hist:keys=common_pid' > events/ftrace/print/trigger +for i in `seq 1 10` ; do echo "hello" > trace_marker; done +grep 'hitcount: *10$' events/ftrace/print/hist > /dev/null || \ + fail "hist trigger did not trigger correct times on trace_marker" + +do_reset + +exit 0 |