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

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