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 $FAIL
  14 }
  15
  16 if [ ! -f set_event -o ! -d events/sched ]; then
  17     echo "event tracing is not supported"
  18     exit_unsupported
  19 fi
  20
  21 if [ ! -f events/sched/sched_process_fork/trigger ]; then
  22     echo "event trigger is not supported"
  23     exit_unsupported
  24 fi
  25
  26 reset_tracer
  27 do_reset
  28
  29 FEATURE=`grep hist events/sched/sched_process_fork/trigger`
  30 if [ -z "$FEATURE" ]; then
  31     echo "hist trigger is not supported"
  32     exit_unsupported
  33 fi
  34
  35 reset_trigger
  36
  37 echo "Test histogram multiple tiggers"
  38
  39 echo 'hist:keys=parent_pid:vals=child_pid' > events/sched/sched_process_fork/trigger
  40 echo 'hist:keys=parent_comm:vals=child_pid' >> events/sched/sched_process_fork/trigger
  41 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  42 grep parent_pid events/sched/sched_process_fork/hist > /dev/null || \
  43     fail "hist trigger on sched_process_fork did not work"
  44 grep child events/sched/sched_process_fork/hist > /dev/null || \
  45     fail "hist trigger on sched_process_fork did not work"
  46 COMM=`cat /proc/$$/comm`
  47 grep "parent_comm: $COMM" events/sched/sched_process_fork/hist > /dev/null || \
  48     fail "string key on sched_process_fork did not work"
  49
  50 reset_trigger
  51
  52 echo "Test histogram with its name"
  53
  54 echo 'hist:name=test_hist:keys=common_pid' > events/sched/sched_process_fork/trigger
  55 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  56 grep test_hist events/sched/sched_process_fork/hist > /dev/null || \
  57     fail "named event on sched_process_fork did not work"
  58
  59 echo "Test same named histogram on different events"
  60
  61 echo 'hist:name=test_hist:keys=common_pid' > events/sched/sched_process_exit/trigger
  62 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  63 grep test_hist events/sched/sched_process_exit/hist > /dev/null || \
  64     fail "named event on sched_process_fork did not work"
  65
  66 diffs=`diff events/sched/sched_process_exit/hist events/sched/sched_process_fork/hist | wc -l`
  67 test $diffs -eq 0 || fail "Same name histograms are not same"
  68
  69 reset_trigger
  70
  71 do_reset
  72
  73 exit 0