tools/testing/selftests/ftrace/test.d/event/toplevel-enable.tc

   1 #!/bin/sh
   2 # description: event tracing - enable/disable with top level files
   3
   4 do_reset() {
   5     echo > set_event
   6     clear_trace
   7 }
   8
   9 fail() { #msg
  10     do_reset
  11     echo $1
  12     exit $FAIL
  13 }
  14
  15 yield() {
  16     ping localhost -c 1 || sleep .001 || usleep 1 || sleep 1
  17 }
  18
  19 if [ ! -f available_events -o ! -f set_event -o ! -d events ]; then
  20     echo "event tracing is not supported"
  21     exit_unsupported
  22 fi
  23
  24 reset_tracer
  25 do_reset
  26
  27 echo '*:*' > set_event
  28
  29 yield
  30
  31 count=`cat trace | grep -v ^# | wc -l`
  32 if [ $count -eq 0 ]; then
  33     fail "none of events are recorded"
  34 fi
  35
  36 do_reset
  37
  38 echo 1 > events/enable
  39
  40 yield
  41
  42 count=`cat trace | grep -v ^# | wc -l`
  43 if [ $count -eq 0 ]; then
  44     fail "none of events are recorded"
  45 fi
  46
  47 do_reset
  48
  49 echo 0 > events/enable
  50
  51 yield
  52
  53 count=`cat trace | grep -v ^# | wc -l`
  54 if [ $count -ne 0 ]; then
  55     fail "any of events should not be recorded"
  56 fi
  57
  58 do_reset
  59
  60 exit 0