tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-hist.tc

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: trace_marker trigger - test histogram trigger
   4 # flags: instance
   5
   6 do_reset() {
   7     reset_trigger
   8     echo > set_event
   9     clear_trace
  10 }
  11
  12 fail() { #msg
  13     do_reset
  14     echo $1
  15     exit_fail
  16 }
  17
  18 if [ ! -f set_event ]; then
  19     echo "event tracing is not supported"
  20     exit_unsupported
  21 fi
  22
  23 if [ ! -d events/ftrace/print ]; then
  24     echo "event trace_marker is not supported"
  25     exit_unsupported
  26 fi
  27
  28 if [ ! -f events/ftrace/print/trigger ]; then
  29     echo "event trigger is not supported"
  30     exit_unsupported
  31 fi
  32
  33 if [ ! -f events/ftrace/print/hist ]; then
  34     echo "hist trigger is not supported"
  35     exit_unsupported
  36 fi
  37
  38 do_reset
  39
  40 echo "Test histogram trace_marker tigger"
  41
  42 echo 'hist:keys=common_pid' > events/ftrace/print/trigger
  43 for i in `seq 1 10` ; do echo "hello" > trace_marker; done
  44 grep 'hitcount: *10$' events/ftrace/print/hist > /dev/null || \
  45     fail "hist trigger did not trigger correct times on trace_marker"
  46
  47 do_reset
  48
  49 exit 0