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: sta...@vger.kernel.org
Signed-off-by: Masami Hiramatsu <mhira...@kernel.org>
---
.../ftrace/test.d/ftrace/tracing-error-log.tc | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/tracing-error-log.tc
b/tools/testing/selftests/ftrace/test.d/ftrace/tracing-error-log.tc
index 021c03fd885d..23465823532b 100644
--- 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
