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

   1 #!/bin/sh
   2 # description: event trigger - test multiple histogram triggers
   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 if [ ! -f events/sched/sched_process_fork/hist ]; then
  27     echo "hist trigger is not supported"
  28     exit_unsupported
  29 fi
  30
  31 reset_tracer
  32 do_reset
  33
  34 reset_trigger
  35
  36 echo "Test histogram multiple tiggers"
  37
  38 echo 'hist:keys=parent_pid:vals=child_pid' > events/sched/sched_process_fork/trigger
  39 echo 'hist:keys=parent_comm:vals=child_pid' >> events/sched/sched_process_fork/trigger
  40 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  41 grep parent_pid events/sched/sched_process_fork/hist > /dev/null || \
  42     fail "hist trigger on sched_process_fork did not work"
  43 grep child events/sched/sched_process_fork/hist > /dev/null || \
  44     fail "hist trigger on sched_process_fork did not work"
  45 COMM=`cat /proc/$$/comm`
  46 grep "parent_comm: $COMM" events/sched/sched_process_fork/hist > /dev/null || \
  47     fail "string key on sched_process_fork did not work"
  48
  49 reset_trigger
  50
  51 echo "Test histogram with its name"
  52
  53 echo 'hist:name=test_hist:keys=common_pid' > events/sched/sched_process_fork/trigger
  54 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  55 grep test_hist events/sched/sched_process_fork/hist > /dev/null || \
  56     fail "named event on sched_process_fork did not work"
  57
  58 echo "Test same named histogram on different events"
  59
  60 echo 'hist:name=test_hist:keys=common_pid' > events/sched/sched_process_exit/trigger
  61 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  62 grep test_hist events/sched/sched_process_exit/hist > /dev/null || \
  63     fail "named event on sched_process_fork did not work"
  64
  65 diffs=`diff events/sched/sched_process_exit/hist events/sched/sched_process_fork/hist | wc -l`
  66 test $diffs -eq 0 || fail "Same name histograms are not same"
  67
  68 reset_trigger
  69
  70 do_reset
  71
  72 exit 0