Add a simple testcase for trace_pipe which can consume ringbuffer.
Signed-off-by: Masami Hiramatsu mhiramat@kernel.org --- Changes in v3: - Run this on an instance too. --- .../selftests/ftrace/test.d/00basic/trace_pipe.tc | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/00basic/trace_pipe.tc
diff --git a/tools/testing/selftests/ftrace/test.d/00basic/trace_pipe.tc b/tools/testing/selftests/ftrace/test.d/00basic/trace_pipe.tc new file mode 100644 index 000000000000..5058fbcfd90f --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/00basic/trace_pipe.tc @@ -0,0 +1,16 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: trace_pipe and trace_marker +# flags: instance + +[ ! -f trace_marker ] && exit_unsupported + +echo "test input 1" > trace_marker + +: "trace interface never consume the ring buffer" +grep -q "test input 1" trace +grep -q "test input 1" trace + +: "trace interface never consume the ring buffer" +head -n 1 trace_pipe | grep -q "test input 1" +! grep -q "test input 1" trace