blob: 6fed4cf2db81d420e43c8c7d8b159a8e3fd3ea17 (
plain) (
blame)
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
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: ftrace - test for function event triggers
# flags: instance
#
# Ftrace allows to add triggers to functions, such as enabling or disabling
# tracing, enabling or disabling trace events, or recording a stack trace
# within the ring buffer.
#
# This test is designed to test event triggers
#
# The triggers are set within the set_ftrace_filter file
if [ ! -f set_ftrace_filter ]; then
echo "set_ftrace_filter not found? Is dynamic ftrace not set?"
exit_unsupported
fi
do_reset() {
reset_ftrace_filter
reset_tracer
disable_events
clear_trace
enable_tracing
}
fail() { # mesg
do_reset
echo $1
exit_fail
}
SLEEP_TIME=".1"
do_reset
echo "Testing function probes with events:"
EVENT="sched:sched_switch"
EVENT_ENABLE="events/sched/sched_switch/enable"
cnt_trace() {
grep -v '^#' trace | wc -l
}
test_event_enabled() {
val=$1
e=`cat $EVENT_ENABLE`
if [ "$e" != $val ]; then
fail "Expected $val but found $e"
fi
}
run_enable_disable() {
enable=$1 # enable
Enable=$2 # Enable
check_disable=$3 # 0
check_enable_star=$4 # 1*
check_disable_star=$5 # 0*
cnt=`cnt_trace`
if [ $cnt -ne 0 ]; then
fail "Found junk in trace file"
fi
echo "$Enable event all the time"
echo $check_disable > $EVENT_ENABLE
sleep $SLEEP_TIME
test_event_enabled $check_disable
echo "schedule:${enable}_event:$EVENT" > set_ftrace_filter
if [ -d ../../instances ]; then # Check instances
cur=`cat set_ftrace_filter`
top=`cat ../../set_ftrace_filter`
if [ "$cur" = "$top" ]; then
echo "This kernel is too old to support per instance filter"
reset_ftrace_filter
exit_unsupported
fi
fi
echo " make sure it works 5 times"
for i in `seq 5`; do
sleep $SLEEP_TIME
echo " test $i"
test_event_enabled $check_enable_star
echo $check_disable > $EVENT_ENABLE
done
sleep $SLEEP_TIME
echo " make sure it's still works"
test_event_enabled $check_enable_star
reset_ftrace_filter
echo " make sure it only works 3 times"
echo $check_disable > $EVENT_ENABLE
sleep $SLEEP_TIME
echo "schedule:${enable}_event:$EVENT:3" > set_ftrace_filter
for i in `seq 3`; do
sleep $SLEEP_TIME
echo " test $i"
test_event_enabled $check_enable_star
echo $check_disable > $EVENT_ENABLE
done
sleep $SLEEP_TIME
echo " make sure it stop working"
test_event_enabled $check_disable_star
do_reset
}
run_enable_disable enable Enable 0 "1*" "0*"
run_enable_disable disable Disable 1 "0*" "1*"
|