tools/testing/selftests/ftrace/test.d/trigger/trigger-stacktrace.tc

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: event trigger - test stacktrace-trigger
   4
   5 do_reset() {
   6     reset_trigger
   7     echo > set_event
   8     clear_trace
   9 }
  10
  11 fail() { #msg
  12     do_reset
  13     echo $1
  14     exit $FAIL
  15 }
  16
  17 if [ ! -f set_event -o ! -d events/sched ]; then
  18     echo "event tracing is not supported"
  19     exit_unsupported
  20 fi
  21
  22 if [ ! -f events/sched/sched_process_fork/trigger ]; then
  23     echo "event trigger is not supported"
  24     exit_unsupported
  25 fi
  26
  27 reset_tracer
  28 do_reset
  29
  30 FEATURE=`grep stacktrace events/sched/sched_process_fork/trigger`
  31 if [ -z "$FEATURE" ]; then
  32     echo "stacktrace trigger is not supported"
  33     exit_unsupported
  34 fi
  35
  36 echo "Test stacktrace tigger"
  37 echo 0 > trace
  38 echo 0 > options/stacktrace
  39 echo 'stacktrace' > events/sched/sched_process_fork/trigger
  40 ( echo "forked")
  41 grep "<stack trace>" trace > /dev/null || \
  42     fail "stacktrace trigger on sched_process_fork did not work"
  43
  44 reset_trigger
  45
  46 echo "Test stacktrace semantic errors"
  47
  48 ! echo "stacktrace:foo" > events/sched/sched_process_fork/trigger
  49 echo "stacktrace" > events/sched/sched_process_fork/trigger
  50 ! echo "stacktrace" > events/sched/sched_process_fork/trigger
  51
  52 do_reset
  53
  54 exit 0