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

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: event tracing - enable/disable with event level files
   4 # flags: instance
   5
   6 do_reset() {
   7     echo > set_event
   8     clear_trace
   9 }
  10
  11 fail() { #msg
  12     do_reset
  13     echo $1
  14     exit $FAIL
  15 }
  16
  17 yield() {
  18     ping localhost -c 1 || sleep .001 || usleep 1 || sleep 1
  19 }
  20
  21 if [ ! -f set_event -o ! -d events/sched ]; then
  22     echo "event tracing is not supported"
  23     exit_unsupported
  24 fi
  25
  26 reset_tracer
  27 do_reset
  28
  29 echo 'sched:sched_switch' > set_event
  30
  31 yield
  32
  33 count=`cat trace | grep sched_switch | wc -l`
  34 if [ $count -eq 0 ]; then
  35     fail "sched_switch events are not recorded"
  36 fi
  37
  38 do_reset
  39
  40 echo 1 > events/sched/sched_switch/enable
  41
  42 yield
  43
  44 count=`cat trace | grep sched_switch | wc -l`
  45 if [ $count -eq 0 ]; then
  46     fail "sched_switch events are not recorded"
  47 fi
  48
  49 do_reset
  50
  51 echo 0 > events/sched/sched_switch/enable
  52
  53 yield
  54
  55 count=`cat trace | grep sched_switch | wc -l`
  56 if [ $count -ne 0 ]; then
  57     fail "sched_switch events should not be recorded"
  58 fi
  59
  60 do_reset
  61
  62 exit 0