Commit c1edd060 authored by Masami Hiramatsu's avatar Masami Hiramatsu Committed by Shuah Khan (Samsung OSG)
Browse files

selftests/ftrace: Add wakeup tracer testcase 



Add a testcase for wakeup tracer.

Signed-off-by: default avatarMasami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: default avatarShuah Khan (Samsung OSG) <shuah@kernel.org>
parent 91ae08a2

tools/testing/selftests/ftrace/config

+1 −0
Original line number Diff line number Diff line
@@ -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

tools/testing/selftests/ftrace/test.d/tracer/wakeup.tc

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+25 −0
Original line number Diff line number Diff line 
#!/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