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

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: event tracing - enable/disable with top level files
   4
   5 do_reset() {
   6     echo > set_event
   7     clear_trace
   8 }
   9
  10 fail() { #msg
  11     echo $1
  12     exit_fail
  13 }
  14
  15 if [ ! -f available_events -o ! -f set_event -o ! -d events ]; then
  16     echo "event tracing is not supported"
  17     exit_unsupported
  18 fi
  19
  20 echo '*:*' > set_event
  21
  22 yield
  23
  24 echo 0 > tracing_on
  25
  26 count=`head -n 128 trace | grep -v ^# | wc -l`
  27 if [ $count -eq 0 ]; then
  28     fail "none of events are recorded"
  29 fi
  30
  31 do_reset
  32
  33 echo 1 > events/enable
  34 echo 1 > tracing_on
  35
  36 yield
  37
  38 echo 0 > tracing_on
  39 count=`head -n 128 trace | grep -v ^# | wc -l`
  40 if [ $count -eq 0 ]; then
  41     fail "none of events are recorded"
  42 fi
  43
  44 do_reset
  45
  46 echo 0 > events/enable
  47
  48 yield
  49
  50 count=`cat trace | grep -v ^# | wc -l`
  51 if [ $count -ne 0 ]; then
  52     fail "any of events should not be recorded"
  53 fi
  54
  55 exit 0