1 #!/bin/sh 2 # description: event trigger - test inter-event histogram trigger onmatch action 3 4 fail() { #msg 5 echo $1 6 exit_fail 7 } 8 9 if [ ! -f set_event ]; then 10 echo "event tracing is not supported" 11 exit_unsupported 12 fi 13 14 if [ ! -f synthetic_events ]; then 15 echo "synthetic event is not supported" 16 exit_unsupported 17 fi 18 19 echo "Test create synthetic event" 20 21 echo 'wakeup_latency u64 lat pid_t pid char comm[16]' > synthetic_events 22 if [ ! -d events/synthetic/wakeup_latency ]; then 23 fail "Failed to create wakeup_latency synthetic event" 24 fi 25 26 echo "Test create histogram for synthetic event" 27 echo "Test histogram variables,simple expression support and onmatch action" 28 29 echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_wakeup/trigger 30 echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_wakeup).wakeup_latency($wakeup_lat,next_pid,next_comm) if next_comm=="ping"' > events/sched/sched_switch/trigger 31 echo 'hist:keys=comm,pid,lat:wakeup_lat=lat:sort=lat' > events/synthetic/wakeup_latency/trigger 32 33 ping $LOCALHOST -c 5 34 if ! grep -q "ping" events/synthetic/wakeup_latency/hist; then 35 fail "Failed to create onmatch action inter-event histogram" 36 fi 37 38 exit 0 39
