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

   1 #!/bin/sh
   2 # description: event tracing - enable/disable with subsystem level files
   3 # flags: instance
   4
   5 do_reset() {
   6     echo > set_event
   7     clear_trace
   8 }
   9
  10 fail() { #msg
  11     do_reset
  12     echo $1
  13     exit $FAIL
  14 }
  15
  16 yield() {
  17     ping localhost -c 1 || sleep .001 || usleep 1 || sleep 1
  18 }
  19
  20 if [ ! -f set_event -o ! -d events/sched ]; then
  21     echo "event tracing is not supported"
  22     exit_unsupported
  23 fi
  24
  25 reset_tracer
  26 do_reset
  27
  28 echo 'sched:*' > set_event
  29
  30 yield
  31
  32 count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
  33 if [ $count -lt 3 ]; then
  34     fail "at least fork, exec and exit events should be recorded"
  35 fi
  36
  37 do_reset
  38
  39 echo 1 > events/sched/enable
  40
  41 yield
  42
  43 count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
  44 if [ $count -lt 3 ]; then
  45     fail "at least fork, exec and exit events should be recorded"
  46 fi
  47
  48 do_reset
  49
  50 echo 0 > events/sched/enable
  51
  52 yield
  53
  54 count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
  55 if [ $count -ne 0 ]; then
  56     fail "any of scheduler events should not be recorded"
  57 fi
  58
  59 do_reset
  60
  61 exit 0