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 # requires: set_event events/sched/sched_process_fork/trigger events/sched/sched_process_fork/hist
   5 # flags: instance
   6
   7 fail() { #msg
   8     echo $1
   9     exit_fail
  10 }
  11
  12 echo "Test histogram basic trigger"
  13
  14 echo 'hist:keys=parent_pid:vals=child_pid' > events/sched/sched_process_fork/trigger
  15 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  16 grep parent_pid events/sched/sched_process_fork/hist > /dev/null || \
  17     fail "hist trigger on sched_process_fork did not work"
  18 grep child events/sched/sched_process_fork/hist > /dev/null || \
  19     fail "hist trigger on sched_process_fork did not work"
  20
  21 reset_trigger
  22
  23 echo "Test histogram with compound keys"
  24
  25 echo 'hist:keys=parent_pid,child_pid' > events/sched/sched_process_fork/trigger
  26 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  27 grep '^{ parent_pid:.*, child_pid:.*}' events/sched/sched_process_fork/hist > /dev/null || \
  28     fail "compound keys on sched_process_fork did not work"
  29
  30 reset_trigger
  31
  32 echo "Test histogram with string key"
  33
  34 echo 'hist:keys=parent_comm' > events/sched/sched_process_fork/trigger
  35 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  36 COMM=`cat /proc/$$/comm`
  37 grep "parent_comm: $COMM" events/sched/sched_process_fork/hist > /dev/null || \
  38     fail "string key on sched_process_fork did not work"
  39
  40 reset_trigger
  41
  42 echo "Test histogram with sym modifier"
  43
  44 echo 'hist:keys=call_site.sym' > events/kmem/kmalloc/trigger
  45 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  46 grep '{ call_site: \[[0-9a-f][0-9a-f]*\] [_a-zA-Z][_a-zA-Z]* *}' events/kmem/kmalloc/hist > /dev/null || \
  47     fail "sym modifier on kmalloc call_site did not work"
  48
  49 reset_trigger
  50
  51 echo "Test histogram with sym-offset modifier"
  52
  53 echo 'hist:keys=call_site.sym-offset' > events/kmem/kmalloc/trigger
  54 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  55 grep '{ call_site: \[[0-9a-f][0-9a-f]*\] [_a-zA-Z][_a-zA-Z]*+0x[0-9a-f][0-9a-f]*' events/kmem/kmalloc/hist > /dev/null || \
  56     fail "sym-offset modifier on kmalloc call_site did not work"
  57
  58 reset_trigger
  59
  60 echo "Test histogram with sort key"
  61
  62 echo 'hist:keys=parent_pid,child_pid:sort=child_pid.ascending' > events/sched/sched_process_fork/trigger
  63 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  64
  65 check_inc() {
  66     while [ $# -gt 1 ]; do
  67         [ $1 -gt $2 ] && return 1
  68         shift 1
  69     done
  70     return 0
  71 }
  72 check_inc `grep -o "child_pid:[[:space:]]*[[:digit:]]*" \
  73     events/sched/sched_process_fork/hist | cut -d: -f2 ` ||
  74     fail "sort param on sched_process_fork did not work"
  75
  76 exit 0