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selftests: ftrace: Check whether snapshot trigger is supported correctly

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If "snapshot" special file doesn't exist, that kernel does
not support snapshot and snapshot trigger too. In that case
snapshot trigger test results to unsupported instead of fail.

Link: http://lkml.kernel.org/r/147928401215.22982.10411665829041109794.stgit@devbox

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Masami Hiramatsu 2016-11-16 17:13:32 +09:00 committed by Steven Rostedt
parent 7786bcca77
commit 131c60c39c
1 changed files with 5 additions and 0 deletions
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5
tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc
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@ -23,6 +23,11 @@ if [ ! -f events/sched/sched_process_fork/trigger ]; then
exit_unsupported
fi
if [ ! -f snapshot ]; then
echo "snapshot is not supported"
exit_unsupported
fi
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