tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc

   1 #!/bin/sh
   2 # description: event trigger - test snapshot-trigger
   3
   4 do_reset() {
   5     reset_trigger
   6     echo > set_event
   7     clear_trace
   8 }
   9
  10 fail() { #msg
  11     do_reset
  12     echo $1
  13     exit $FAIL
  14 }
  15
  16 if [ ! -f set_event -o ! -d events/sched ]; then
  17     echo "event tracing is not supported"
  18     exit_unsupported
  19 fi
  20
  21 if [ ! -f events/sched/sched_process_fork/trigger ]; then
  22     echo "event trigger is not supported"
  23     exit_unsupported
  24 fi
  25
  26 reset_tracer
  27 do_reset
  28
  29 FEATURE=`grep snapshot events/sched/sched_process_fork/trigger`
  30 if [ -z "$FEATURE" ]; then
  31     echo "snapshot trigger is not supported"
  32     exit_unsupported
  33 fi
  34
  35 echo "Test snapshot tigger"
  36 echo 0 > snapshot
  37 echo 1 > events/sched/sched_process_fork/enable
  38 ( echo "forked")
  39 echo 'snapshot:1' > events/sched/sched_process_fork/trigger
  40 ( echo "forked")
  41 grep sched_process_fork snapshot > /dev/null || \
  42     fail "snapshot trigger on sched_process_fork did not work"
  43
  44 reset_trigger
  45 echo 0 > snapshot
  46 echo 0 > events/sched/sched_process_fork/enable
  47
  48 echo "Test snapshot semantic errors"
  49
  50 ! echo "snapshot+1" > events/sched/sched_process_fork/trigger
  51 echo "snapshot" > events/sched/sched_process_fork/trigger
  52 ! echo "snapshot" > events/sched/sched_process_fork/trigger
  53
  54 do_reset
  55
  56 exit 0