tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-stack.tc

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: event trigger - test inter-event histogram trigger trace action with dynamic string param
   4 # requires: set_event synthetic_events events/sched/sched_process_exec/hist "can be any field, or the special string 'common_stacktrace'":README
   5
   6 fail() { #msg
   7     echo $1
   8     exit_fail
   9 }
  10
  11 echo "Test create synthetic event with stack"
  12
  13 echo 's:wake_lat pid_t pid; u64 delta; unsigned long[] stack;' > dynamic_events
  14 echo 'hist:keys=next_pid:ts=common_timestamp.usecs,st=common_stacktrace  if prev_state == 1||prev_state == 2' >> events/sched/sched_switch/trigger
  15 echo 'hist:keys=prev_pid:delta=common_timestamp.usecs-$ts,s=$st:onmax($delta).trace(wake_lat,prev_pid,$delta,$s)' >> events/sched/sched_switch/trigger
  16 echo 1 > events/synthetic/wake_lat/enable
  17 sleep 1
  18
  19 if ! grep -q "=>.*sched" trace; then
  20     fail "Failed to create synthetic event with stack"
  21 fi
  22
  23 exit 0