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 # requires: available_events set_event events/enable
   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 echo '*:*' > set_event
  17
  18 yield
  19
  20 echo 0 > tracing_on
  21
  22 count=`head -n 128 trace | grep -v ^# | wc -l`
  23 if [ $count -eq 0 ]; then
  24     fail "none of events are recorded"
  25 fi
  26
  27 do_reset
  28
  29 echo 1 > events/enable
  30 echo 1 > tracing_on
  31
  32 yield
  33
  34 echo 0 > tracing_on
  35 count=`head -n 128 trace | grep -v ^# | wc -l`
  36 if [ $count -eq 0 ]; then
  37     fail "none of events are recorded"
  38 fi
  39
  40 do_reset
  41
  42 echo 0 > events/enable
  43
  44 yield
  45
  46 count=`cat trace | grep -v ^# | wc -l`
  47 if [ $count -ne 0 ]; then
  48     fail "any of events should not be recorded"
  49 fi
  50
  51 exit 0