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

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: event trigger - test histogram modifiers
   4 # flags: instance
   5
   6 do_reset() {
   7     reset_trigger
   8     echo > set_event
   9     clear_trace
  10 }
  11
  12 fail() { #msg
  13     do_reset
  14     echo $1
  15     exit $FAIL
  16 }
  17
  18 if [ ! -f set_event -o ! -d events/sched ]; then
  19     echo "event tracing is not supported"
  20     exit_unsupported
  21 fi
  22
  23 if [ ! -f events/sched/sched_process_fork/trigger ]; then
  24     echo "event trigger is not supported"
  25     exit_unsupported
  26 fi
  27
  28 if [ ! -f events/sched/sched_process_fork/hist ]; then
  29     echo "hist trigger is not supported"
  30     exit_unsupported
  31 fi
  32
  33 reset_tracer
  34 do_reset
  35
  36 echo "Test histogram with execname modifier"
  37
  38 echo 'hist:keys=common_pid.execname' > events/sched/sched_process_fork/trigger
  39 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  40 COMM=`cat /proc/$$/comm`
  41 grep "common_pid: $COMM" events/sched/sched_process_fork/hist > /dev/null || \
  42     fail "execname modifier on sched_process_fork did not work"
  43
  44 reset_trigger
  45
  46 echo "Test histogram with hex modifier"
  47
  48 echo 'hist:keys=parent_pid.hex' > events/sched/sched_process_fork/trigger
  49 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  50 # Note that $$ is the parent pid. $PID is current PID.
  51 HEX=`printf %x $PID`
  52 grep "parent_pid: $HEX" events/sched/sched_process_fork/hist > /dev/null || \
  53     fail "hex modifier on sched_process_fork did not work"
  54
  55 reset_trigger
  56
  57 echo "Test histogram with syscall modifier"
  58
  59 echo 'hist:keys=id.syscall' > events/raw_syscalls/sys_exit/trigger
  60 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  61 grep "id: \(unknown_\|sys_\)" events/raw_syscalls/sys_exit/hist > /dev/null || \
  62     fail "syscall modifier on raw_syscalls/sys_exit did not work"
  63
  64
  65 reset_trigger
  66
  67 echo "Test histgram with log2 modifier"
  68
  69 echo 'hist:keys=bytes_req.log2' > events/kmem/kmalloc/trigger
  70 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
  71 grep 'bytes_req: ~ 2^[0-9]*' events/kmem/kmalloc/hist > /dev/null || \
  72     fail "log2 modifier on kmem/kmalloc did not work"
  73
  74 do_reset
  75
  76 exit 0