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
5
6fail() { #msg
7    echo $1
8    exit_fail
9}
10
11grep -q "trace(<synthetic_event>" README || exit_unsupported # version issue
12
13echo "Test create synthetic event"
14
15echo 'wakeup_latency  u64 lat pid_t pid char comm[16]' > synthetic_events
16if [ ! -d events/synthetic/wakeup_latency ]; then
17    fail "Failed to create wakeup_latency synthetic event"
18fi
19
20echo "Test create histogram for synthetic event using trace action"
21echo "Test histogram variables,simple expression support and trace action"
22
23echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_wakeup/trigger
24echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_wakeup).trace(wakeup_latency,$wakeup_lat,next_pid,next_comm) if next_comm=="ping"' > events/sched/sched_switch/trigger
25echo 'hist:keys=comm,pid,lat:wakeup_lat=lat:sort=lat' > events/synthetic/wakeup_latency/trigger
26
27ping $LOCALHOST -c 5
28
29if ! grep -q "ping" events/synthetic/wakeup_latency/hist; then
30    fail "Failed to create trace action inter-event histogram"
31fi
32
33exit 0
34