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selftests/ftrace: Add wakeup tracer testcase

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Add a testcase for wakeup tracer.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
This commit is contained in:
Masami Hiramatsu 2018-08-30 23:24:42 +09:00 committed by Shuah Khan (Samsung OSG)
parent 91ae08a265
commit c1edd060b4
2 changed files with 26 additions and 0 deletions
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1
tools/testing/selftests/ftrace/config
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@ -4,6 +4,7 @@ CONFIG_FUNCTION_PROFILER=y
CONFIG_TRACER_SNAPSHOT=y
CONFIG_STACK_TRACER=y
CONFIG_HIST_TRIGGERS=y
CONFIG_SCHED_TRACER=y
CONFIG_PREEMPT_TRACER=y
CONFIG_IRQSOFF_TRACER=y
CONFIG_PREEMPTIRQ_DELAY_TEST=m

25
tools/testing/selftests/ftrace/test.d/tracer/wakeup.tc Normal file
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@ -0,0 +1,25 @@
#!/bin/sh
# SPDX-License-Identifier: GPL2.0
# description: Test wakeup tracer
if ! which chrt ; then
echo "chrt is not found. This test requires nice command."
exit_unresolved
fi
if ! grep -wq "wakeup" available_tracers ; then
echo "wakeup tracer is not supported"
exit_unsupported
fi
echo wakeup > current_tracer
echo 1 > tracing_on
echo 0 > tracing_max_latency
: "Wakeup higher priority task"
chrt -f 5 sleep 1
echo 0 > tracing_on
grep '+ \[[[:digit:]]*\]' trace
grep '==> \[[[:digit:]]*\]' trace