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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
#!/bin/bash
#
# SPDX-FileCopyrightText: 2013 Christian Babeux <christian.babeux@efficios.com>
# Copyright (C) 2014, 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
#
# SPDX-License-Identifier: GPL-2.0-only
#
TEST_DESC="Kernel tracer - Clock override plugin"
CURDIR=$(dirname $0)/
TESTDIR=$CURDIR/../..
SESSION_NAME="clock_override"
NUM_TESTS=32
EVENT_NAME="lttng_test_filter_event"
TESTCMD="echo -n 10 > /proc/lttng-test-filter-event"
METADATA_CLOCK_START_TOKEN="clock {"
METADATA_CLOCK_END_TOKEN="};"
METADATA_TOKEN_LIST=(
"name"
"uuid"
"description"
"freq"
)
CLOCK_TOKEN_VALUE=(
"lttng_test_clock_override"
"83c63deb-7aa4-48fb-abda-946f400d76e6"
"Freeze time with 1KHz for regression test"
"1000"
)
source $TESTDIR/utils/utils.sh
function signal_cleanup()
{
diag "*** Exiting ***"
stop_lttng_sessiond
modprobe --remove lttng-test lttng-clock-plugin-test lttng-clock
full_cleanup
}
function extract_clock_metadata()
{
local metadata_file=$1
local clock_metadata_file_destination=$2
cat $metadata_file \
| sed -n "/$METADATA_CLOCK_START_TOKEN/,/$METADATA_CLOCK_END_TOKEN/p" \
> $clock_metadata_file_destination
ok $? "Clock metadata extraction"
}
function extract_clock_metadata_token()
{
local clock_metadata_file=$1
local token=$2
# Look for token and get value between ""
cat $clock_metadata_file | grep $token | awk -F"= |;" '{print $2}' | tr -d '"'
}
function test_clock_override_metadata()
{
local ctf_metadata_file=$(TMPDIR="$TRACE_PATH" mktemp -t ctf-metadata.XXXXXX)
local clock_metadata_file=$(TMPDIR="$TRACE_PATH" mktemp -t clock-metadata.XXXXXX)
local result=""
diag "Clock override plugin metadata test"
modprobe lttng-clock-plugin-test
start_lttng_sessiond
modprobe lttng-test
create_lttng_session_ok $SESSION_NAME $TRACE_PATH
enable_kernel_lttng_event_ok $SESSION_NAME "$EVENT_NAME"
start_lttng_tracing_ok $SESSION_NAME
eval ${TESTCMD}
stop_lttng_tracing_ok $SESSION_NAME
destroy_lttng_session_ok $SESSION_NAME
stop_lttng_sessiond
modprobe --remove lttng-test lttng-clock-plugin-test lttng-clock
local TRACE_METADATA_FILE_PATH="$(find "$TRACE_PATH" -name metadata -type f)"
local TRACE_METADATA_DIR="$(dirname "$TRACE_METADATA_FILE_PATH")"
_run_babeltrace_cmd -o ctf-metadata -w $ctf_metadata_file $TRACE_METADATA_DIR
ok $? "Metadata extraction from babeltrace"
extract_clock_metadata $ctf_metadata_file $clock_metadata_file
test ${#METADATA_TOKEN_LIST[@]} -eq ${#CLOCK_TOKEN_VALUE[@]}
ok $? "Tokens to check(${#METADATA_TOKEN_LIST[@]}) and provided values(${#CLOCK_TOKEN_VALUE[@]}) count is equal"
local counter=0
while [ "$counter" -lt "${#METADATA_TOKEN_LIST[@]}" ]; do
result=$(extract_clock_metadata_token $clock_metadata_file \
${METADATA_TOKEN_LIST[$counter]})
test "$result" == "${CLOCK_TOKEN_VALUE[$counter]}"
ok $? "Token \"${METADATA_TOKEN_LIST[$counter]}\" expect:${CLOCK_TOKEN_VALUE[$counter]} got:$result"
let "counter++"
done
rm -rf $ctf_metadata_file
rm -rf $clock_metadata_file
}
function test_clock_override_timestamp()
{
diag "Clock override test"
# Test without the plugin
diag "Plugin disabled"
start_lttng_sessiond
modprobe lttng-test
create_lttng_session_ok $SESSION_NAME $TRACE_PATH
enable_kernel_lttng_event_ok $SESSION_NAME "$EVENT_NAME"
start_lttng_tracing_ok $SESSION_NAME
eval ${TESTCMD}
stop_lttng_tracing_ok $SESSION_NAME
destroy_lttng_session_ok $SESSION_NAME
# Use Babeltrace with "-n all" to give a comma separated list for
# easy extraction of timestamps.
unique_timestamps_count=$(_run_babeltrace_cmd -n all $TRACE_PATH | \
cut -d, -f1 | uniq | wc -l)
test $unique_timestamps_count -gt 1
ok $? "Unique event timestamps without clock override: $unique_timestamps_count expect >1"
modprobe --remove lttng-test
stop_lttng_sessiond
# Test with clock override plugin.
diag "Plugin enabled"
modprobe lttng-clock-plugin-test
modprobe lttng-test
start_lttng_sessiond
create_lttng_session_ok $SESSION_NAME $TRACE_PATH
enable_kernel_lttng_event_ok $SESSION_NAME "$EVENT_NAME"
start_lttng_tracing_ok $SESSION_NAME
eval ${TESTCMD}
stop_lttng_tracing_ok $SESSION_NAME
destroy_lttng_session_ok $SESSION_NAME
modprobe --remove lttng-test
stop_lttng_sessiond
modprobe --remove lttng-clock-plugin-test lttng-clock
# Use Babeltrace with "-n all" to give a comma separated list for
# easy extraction of timestamps.
unique_timestamps_count=$(_run_babeltrace_cmd -n all $TRACE_PATH | \
cut -d, -f1 | uniq | wc -l)
test $unique_timestamps_count -eq 1
ok $? "Unique event timestamps with clock override: $unique_timestamps_count expect 1"
}
# MUST set TESTDIR before calling those functions
plan_tests $NUM_TESTS
print_test_banner "$TEST_DESC"
bail_out_if_no_babeltrace
TESTS=(
"test_clock_override_metadata"
"test_clock_override_timestamp"
)
TEST_COUNT=${#TESTS[@]}
i=0
check_skip_kernel_test "$NUM_TESTS" "Skipping all tests." ||
{
lttng_modules_loaded_fail
validate_lttng_modules_present
trap signal_cleanup SIGTERM SIGINT
while [ "$i" -lt "$TEST_COUNT" ]; do
TRACE_PATH=$(mktemp -d -t tmp.test_clock_override_trace_path.XXXXXX)
# Execute test
${TESTS[$i]}
rm -rf $TRACE_PATH
let "i++"
done
lttng_modules_loaded_fail
}
|
