tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: event tracing - enable/disable with subsystem level files
   4 # flags: instance
   5
   6 do_reset() {
   7     echo > set_event
   8     clear_trace
   9 }
  10
  11 fail() { #msg
  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 echo 'sched:*' > set_event
  22
  23 yield
  24
  25 count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
  26 if [ $count -lt 3 ]; then
  27     fail "at least fork, exec and exit events should be recorded"
  28 fi
  29
  30 do_reset
  31
  32 echo 1 > events/sched/enable
  33
  34 yield
  35
  36 count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
  37 if [ $count -lt 3 ]; then
  38     fail "at least fork, exec and exit events should be recorded"
  39 fi
  40
  41 do_reset
  42
  43 echo 0 > events/sched/enable
  44
  45 yield
  46
  47 count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
  48 if [ $count -ne 0 ]; then
  49     fail "any of scheduler events should not be recorded"
  50 fi
  51
  52 exit 0