1#!/bin/sh
2# description: event trigger - test field variable support
3
4do_reset() {
5    reset_trigger
6    echo > set_event
7    clear_trace
8}
9
10fail() { #msg
11    do_reset
12    echo $1
13    exit_fail
14}
15
16if [ ! -f set_event ]; then
17    echo "event tracing is not supported"
18    exit_unsupported
19fi
20
21if [ ! -f synthetic_events ]; then
22    echo "synthetic event is not supported"
23    exit_unsupported
24fi
25
26clear_synthetic_events
27reset_tracer
28do_reset
29
30echo "Test field variable support"
31
32echo 'wakeup_latency u64 lat; pid_t pid; int prio; char comm[16]' > synthetic_events
33echo 'hist:keys=comm:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_waking/trigger
34echo 'hist:keys=next_comm:wakeup_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).wakeup_latency($wakeup_lat,next_pid,sched.sched_waking.prio,next_comm) if next_comm=="ping"' > events/sched/sched_switch/trigger
35echo 'hist:keys=pid,prio,comm:vals=lat:sort=pid,prio' > events/synthetic/wakeup_latency/trigger
36
37ping localhost -c 3
38if ! grep -q "ping" events/synthetic/wakeup_latency/hist; then
39    fail "Failed to create inter-event histogram"
40fi
41
42if ! grep -q "synthetic_prio=prio" events/sched/sched_waking/hist; then
43    fail "Failed to create histogram with field variable"
44fi
45
46echo '!hist:keys=next_comm:wakeup_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).wakeup_latency($wakeup_lat,next_pid,sched.sched_waking.prio,next_comm) if next_comm=="ping"' >> events/sched/sched_switch/trigger
47
48if grep -q "synthetic_prio=prio" events/sched/sched_waking/hist; then
49    fail "Failed to remove histogram with field variable"
50fi
51
52do_reset
53
54exit 0
55