1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0 3# description: trace_pipe and trace_marker 4# flags: instance 5 6[ ! -f trace_marker ] && exit_unsupported 7 8echo "test input 1" > trace_marker 9 10: "trace interface never consume the ring buffer" 11grep -q "test input 1" trace 12grep -q "test input 1" trace 13 14: "trace interface never consume the ring buffer" 15head -n 1 trace_pipe | grep -q "test input 1" 16! grep -q "test input 1" trace 17