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

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: event trigger - test histogram trigger
   4 # flags: instance
   5
   6 fail() { #msg
   7     echo $1
   8     exit_fail
   9 }
  10
  11 if [ ! -f set_event -o ! -d events/sched ]; then
  12     echo "event tracing is not supported"
  13     exit_unsupported
  14 fi
  15
  16 if [ ! -f events/sched/sched_process_fork/trigger ]; then
  17     echo "event trigger is not supported"
  18     exit_unsupported
  19 fi
  20
  21 if [ ! -f events/sched/sched_process_fork/hist ]; then
  22     echo "hist trigger is not supported"
  23     exit_unsupported
  24 fi
  25
  26 echo "Test histogram basic tigger"
  27
  28 echo 'hist:keys=parent_pid:vals=child_pid' > events/sched/sched_process_fork/trigger
  29 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  30 grep parent_pid events/sched/sched_process_fork/hist > /dev/null || \
  31     fail "hist trigger on sched_process_fork did not work"
  32 grep child events/sched/sched_process_fork/hist > /dev/null || \
  33     fail "hist trigger on sched_process_fork did not work"
  34
  35 reset_trigger
  36
  37 echo "Test histogram with compound keys"
  38
  39 echo 'hist:keys=parent_pid,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:.*, child_pid:.*}' events/sched/sched_process_fork/hist > /dev/null || \
  42     fail "compound keys on sched_process_fork did not work"
  43
  44 reset_trigger
  45
  46 echo "Test histogram with string key"
  47
  48 echo 'hist:keys=parent_comm' > events/sched/sched_process_fork/trigger
  49 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  50 COMM=`cat /proc/$$/comm`
  51 grep "parent_comm: $COMM" events/sched/sched_process_fork/hist > /dev/null || \
  52     fail "string key on sched_process_fork did not work"
  53
  54 reset_trigger
  55
  56 echo "Test histogram with sort key"
  57
  58 echo 'hist:keys=parent_pid,child_pid:sort=child_pid.ascending' > events/sched/sched_process_fork/trigger
  59 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  60
  61 check_inc() {
  62     while [ $# -gt 1 ]; do
  63         [ $1 -gt $2 ] && return 1
  64         shift 1
  65     done
  66     return 0
  67 }
  68 check_inc `grep -o "child_pid:[[:space:]]*[[:digit:]]*" \
  69     events/sched/sched_process_fork/hist | cut -d: -f2 ` ||
  70     fail "sort param on sched_process_fork did not work"
  71
  72 exit 0