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Subject[PATCH 5.7 138/163] selftests/ftrace: Return unsupported if no error_log file
Date
From: Masami Hiramatsu <mhiramat@kernel.org>

commit 619ee76f5c9f6a1d601d1a056a454d62bf676ae4 upstream.

Check whether error_log file exists in tracing/error_log testcase
and return UNSUPPORTED if no error_log file.

This can happen if we run the ftracetest on the older stable
kernel.

Fixes: 4eab1cc461a6 ("selftests/ftrace: Add tracing/error_log testcase")
Cc: stable@vger.kernel.org
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
tools/testing/selftests/ftrace/test.d/ftrace/tracing-error-log.tc | 2 ++
1 file changed, 2 insertions(+)

--- a/tools/testing/selftests/ftrace/test.d/ftrace/tracing-error-log.tc
+++ b/tools/testing/selftests/ftrace/test.d/ftrace/tracing-error-log.tc
@@ -14,6 +14,8 @@ if [ ! -f set_event ]; then
exit_unsupported
fi

+[ -f error_log ] || exit_unsupported
+
ftrace_errlog_check 'event filter parse error' '((sig >= 10 && sig < 15) || dsig ^== 17) && comm != bash' 'events/signal/signal_generate/filter'

exit 0

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