summaryrefslogtreecommitdiff
path: root/tools/testing/selftests/ftrace/test.d/event/event-pid.tc
blob: cc14feec6e1f2dd96a2f0aabf6ad02d45e00e069 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: event tracing - restricts events based on pid
# flags: instance

do_reset() {
    echo > set_event
    echo > set_event_pid
    echo 0 > options/event-fork
    clear_trace
}

fail() { #msg
    do_reset
    echo $1
    exit $FAIL
}

yield() {
    ping localhost -c 1 || sleep .001 || usleep 1 || sleep 1
}

if [ ! -f set_event -o ! -d events/sched ]; then
    echo "event tracing is not supported"
    exit_unsupported
fi

if [ ! -f set_event_pid ]; then
    echo "event pid filtering is not supported"
    exit_unsupported
fi

reset_tracer
do_reset

echo 1 > events/sched/sched_switch/enable

yield

count=`cat trace | grep sched_switch | wc -l`
if [ $count -eq 0 ]; then
    fail "sched_switch events are not recorded"
fi

do_reset

read mypid rest < /proc/self/stat

echo $mypid > set_event_pid
echo 'sched:sched_switch' > set_event

yield

count=`cat trace | grep sched_switch | grep -v "pid=$mypid" | wc -l`
if [ $count -ne 0 ]; then
    fail "sched_switch events from other task are recorded"
fi

do_reset

echo $mypid > set_event_pid
echo 1 > options/event-fork
echo 1 > events/sched/sched_switch/enable

yield

count=`cat trace | grep sched_switch | grep -v "pid=$mypid" | wc -l`
if [ $count -eq 0 ]; then
    fail "sched_switch events from other task are not recorded"
fi

do_reset

exit 0