tools/testing/selftests/ftrace/test.d/00basic/trace_pipe.tc

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