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 # requires: set_event events/sched/sched_process_fork/trigger snapshot
   5
   6 fail() { #msg
   7     echo $1
   8     exit_fail
   9 }
  10
  11 FEATURE=`grep snapshot events/sched/sched_process_fork/trigger`
  12 if [ -z "$FEATURE" ]; then
  13     echo "snapshot trigger is not supported"
  14     exit_unsupported
  15 fi
  16
  17 echo "Test snapshot trigger"
  18 echo 0 > snapshot
  19 echo 1 > events/sched/sched_process_fork/enable
  20 ( echo "forked")
  21 echo 'snapshot:1' > events/sched/sched_process_fork/trigger
  22 ( echo "forked")
  23 grep sched_process_fork snapshot > /dev/null || \
  24     fail "snapshot trigger on sched_process_fork did not work"
  25
  26 reset_trigger
  27 echo 0 > snapshot
  28 echo 0 > events/sched/sched_process_fork/enable
  29
  30 echo "Test snapshot semantic errors"
  31
  32 ! echo "snapshot+1" > events/sched/sched_process_fork/trigger
  33 echo "snapshot" > events/sched/sched_process_fork/trigger
  34 ! echo "snapshot" > events/sched/sched_process_fork/trigger
  35
  36 exit 0