1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0
3 # description: event trigger - test inter-event histogram trigger trace action
4 # requires: set_event synthetic_events events/sched/sched_process_fork/hist "trace(<synthetic_event>":README ping:program
5
6 fail() { #msg
7 echo $1
8 exit_fail
9 }
10
11 echo "Test create synthetic event"
12
13 echo 'wakeup_latency u64 lat pid_t pid char comm[16]' > synthetic_events
14 if [ ! -d events/synthetic/wakeup_latency ]; then
15 fail "Failed to create wakeup_latency synthetic event"
16 fi
17
18 echo "Test create histogram for synthetic event using trace action"
19 echo "Test histogram variables,simple expression support and trace action"
20
21 echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_wakeup/trigger
22 echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_wakeup).trace(wakeup_latency,$wakeup_lat,next_pid,next_comm) if next_comm=="ping"' > events/sched/sched_switch/trigger
23 echo 'hist:keys=comm,pid,lat:wakeup_lat=lat:sort=lat' > events/synthetic/wakeup_latency/trigger
24
25 ping $LOCALHOST -c 5
26
27 if ! grep -q "ping" events/synthetic/wakeup_latency/hist; then
28 fail "Failed to create trace action inter-event histogram"
29 fi
30
31 exit 0
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