Commit | Line | Data |
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07b86b52 JD |
1 | #!/bin/bash |
2 | # | |
9d16b343 | 3 | # Copyright (C) 2013 Julien Desfossez <jdesfossez@efficios.com> |
07b86b52 | 4 | # |
9d16b343 MJ |
5 | # SPDX-License-Identifier: LGPL-2.1-only |
6 | ||
07b86b52 JD |
7 | TEST_DESC="Snapshots - Kernel tracing" |
8 | ||
9 | CURDIR=$(dirname $0)/ | |
10 | TESTDIR=$CURDIR/../../.. | |
11 | EVENT_NAME="sched_switch" | |
07b86b52 JD |
12 | SESSION_NAME="" |
13 | CHANNEL_NAME="snapchan" | |
14 | ||
7539dcec | 15 | TRACE_PATH=$(mktemp --tmpdir -d tmp.test_snapshots_kernel_trace_path.XXXXXX) |
07b86b52 | 16 | |
e4061179 | 17 | NUM_TESTS=2061 |
07b86b52 JD |
18 | |
19 | source $TESTDIR/utils/utils.sh | |
20 | ||
07b86b52 JD |
21 | function test_kernel_local_snapshot () |
22 | { | |
23 | diag "Test local kernel snapshots" | |
24 | create_lttng_session_no_output $SESSION_NAME | |
25 | enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME | |
26 | lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME | |
e563bbdb | 27 | start_lttng_tracing_ok $SESSION_NAME |
9f0e230a | 28 | lttng_snapshot_add_output_ok $SESSION_NAME file://$TRACE_PATH |
07b86b52 | 29 | lttng_snapshot_record $SESSION_NAME |
96340a01 | 30 | stop_lttng_tracing_ok $SESSION_NAME |
67b4c664 | 31 | destroy_lttng_session_ok $SESSION_NAME |
07b86b52 JD |
32 | |
33 | # Validate test | |
e4061179 | 34 | validate_trace_path_kernel_snapshot "$TRACE_PATH" "" "snapshot-1" 0 "" |
78435723 | 35 | validate_trace $EVENT_NAME $TRACE_PATH/ |
07b86b52 JD |
36 | if [ $? -eq 0 ]; then |
37 | # Only delete if successful | |
38 | rm -rf $TRACE_PATH | |
07b86b52 JD |
39 | fi |
40 | } | |
41 | ||
42 | function test_kernel_local_snapshot_after_stop () | |
43 | { | |
44 | diag "Test local kernel snapshots after stop" | |
45 | create_lttng_session_no_output $SESSION_NAME | |
46 | enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME | |
47 | lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME | |
e563bbdb | 48 | start_lttng_tracing_ok $SESSION_NAME |
96340a01 | 49 | stop_lttng_tracing_ok $SESSION_NAME |
9f0e230a | 50 | lttng_snapshot_add_output_ok $SESSION_NAME file://$TRACE_PATH |
07b86b52 | 51 | lttng_snapshot_record $SESSION_NAME |
67b4c664 | 52 | destroy_lttng_session_ok $SESSION_NAME |
07b86b52 JD |
53 | |
54 | # Validate test | |
78435723 | 55 | validate_trace $EVENT_NAME $TRACE_PATH/ |
07b86b52 JD |
56 | if [ $? -eq 0 ]; then |
57 | # Only delete if successful | |
58 | rm -rf $TRACE_PATH | |
07b86b52 JD |
59 | fi |
60 | } | |
61 | ||
62 | function test_kernel_local_snapshot_append_to_metadata () | |
63 | { | |
78435723 JD |
64 | local EVENT1=sched_switch |
65 | local EVENT2=sched_process_exit | |
07b86b52 JD |
66 | |
67 | diag "Test local kernel snapshots with one event $EVENT1" | |
68 | create_lttng_session_no_output $SESSION_NAME | |
69 | enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME | |
70 | lttng_enable_kernel_event $SESSION_NAME $EVENT1 $CHANNEL_NAME | |
e563bbdb | 71 | start_lttng_tracing_ok $SESSION_NAME |
9f0e230a | 72 | lttng_snapshot_add_output_ok $SESSION_NAME file://$TRACE_PATH |
07b86b52 JD |
73 | |
74 | # first snapshot with only 1 event | |
75 | lttng_snapshot_record $SESSION_NAME | |
78435723 | 76 | validate_trace $EVENT_NAME $TRACE_PATH/ |
07b86b52 JD |
77 | if [ $? -eq 0 ]; then |
78 | # Only delete if successful | |
79 | rm -rf $TRACE_PATH | |
07b86b52 JD |
80 | fi |
81 | ||
82 | diag "Adding event $EVENT2" | |
83 | # second snapshot with 2 events | |
84 | lttng_enable_kernel_event $SESSION_NAME $EVENT2 $CHANNEL_NAME | |
85 | rm -rf $TRACE_PATH/snapshot/* 2>/dev/null | |
86 | lttng_snapshot_record $SESSION_NAME | |
78435723 | 87 | validate_trace "${EVENT1},${EVENT2}" $TRACE_PATH/ |
07b86b52 JD |
88 | if [ $? -eq 0 ]; then |
89 | # Only delete if successful | |
90 | rm -rf $TRACE_PATH | |
07b86b52 JD |
91 | fi |
92 | ||
96340a01 | 93 | stop_lttng_tracing_ok $SESSION_NAME |
67b4c664 | 94 | destroy_lttng_session_ok $SESSION_NAME |
07b86b52 JD |
95 | } |
96 | ||
43f71bbd | 97 | function generate_filter_events_cpu0() |
086e6add | 98 | { |
43f71bbd MD |
99 | # Generate many events (fill buffers) on CPU 0 |
100 | taskset 0x00000001 /bin/echo -n "$1" > /proc/lttng-test-filter-event 2> /dev/null | |
086e6add MD |
101 | } |
102 | ||
103 | function test_kernel_local_snapshot_discard () | |
104 | { | |
105 | diag "Test local kernel snapshots with small discard buffers" | |
43f71bbd MD |
106 | |
107 | local event_name="lttng_test_filter_event" | |
108 | ||
109 | modprobe lttng-test | |
086e6add MD |
110 | create_lttng_session_no_output $SESSION_NAME |
111 | enable_lttng_mmap_discard_small_kernel_channel $SESSION_NAME \ | |
112 | $CHANNEL_NAME | |
43f71bbd | 113 | enable_kernel_lttng_event_ok $SESSION_NAME $event_name $CHANNEL_NAME |
086e6add | 114 | start_lttng_tracing_ok $SESSION_NAME |
9f0e230a | 115 | lttng_snapshot_add_output_ok $SESSION_NAME file://$TRACE_PATH |
086e6add | 116 | |
43f71bbd | 117 | generate_filter_events_cpu0 10000 |
086e6add MD |
118 | |
119 | # Take first snapshot, remember first line. | |
120 | lttng_snapshot_record $SESSION_NAME | |
121 | FIRST_LINE="$(trace_first_line $TRACE_PATH/)" | |
122 | diag "First line (1st snapshot): $FIRST_LINE" | |
123 | ||
124 | rm -rf $TRACE_PATH | |
125 | ||
43f71bbd | 126 | generate_filter_events_cpu0 10000 |
086e6add MD |
127 | |
128 | # Take 2nd snapshot, compare first line. In discard mode, they | |
129 | # should still be the same. | |
130 | lttng_snapshot_record $SESSION_NAME | |
131 | FIRST_LINE_2="$(trace_first_line $TRACE_PATH/)" | |
132 | diag "First line (2nd snapshot): $FIRST_LINE" | |
133 | rm -rf $TRACE_PATH | |
134 | ||
135 | if [ x"$FIRST_LINE" != x"$FIRST_LINE_2" ]; then | |
ce83431d | 136 | fail "First snapshot event do not match" |
086e6add | 137 | else |
ce83431d | 138 | pass "First snapshot event match" |
086e6add MD |
139 | fi |
140 | ||
141 | stop_lttng_tracing_ok $SESSION_NAME | |
142 | destroy_lttng_session_ok $SESSION_NAME | |
43f71bbd | 143 | modprobe --remove lttng-test |
086e6add MD |
144 | } |
145 | ||
146 | function test_kernel_local_snapshot_overwrite_small_buffers () | |
147 | { | |
148 | diag "Test local kernel snapshot with small overwrite buffers" | |
43f71bbd MD |
149 | |
150 | local event_name="lttng_test_filter_event" | |
151 | ||
152 | modprobe lttng-test | |
086e6add MD |
153 | create_lttng_session_no_output $SESSION_NAME |
154 | enable_lttng_mmap_overwrite_small_kernel_channel $SESSION_NAME \ | |
155 | $CHANNEL_NAME | |
43f71bbd | 156 | enable_kernel_lttng_event_ok $SESSION_NAME $event_name $CHANNEL_NAME |
086e6add | 157 | start_lttng_tracing_ok $SESSION_NAME |
9f0e230a | 158 | lttng_snapshot_add_output_ok $SESSION_NAME file://$TRACE_PATH |
086e6add | 159 | |
43f71bbd | 160 | generate_filter_events_cpu0 10000 |
086e6add MD |
161 | |
162 | # Take first snapshot, remember first line. | |
163 | lttng_snapshot_record $SESSION_NAME | |
164 | FIRST_LINE="$(trace_first_line $TRACE_PATH/)" | |
165 | diag "First line (1st snapshot): $FIRST_LINE" | |
166 | ||
167 | rm -rf $TRACE_PATH | |
168 | ||
43f71bbd | 169 | generate_filter_events_cpu0 10000 |
086e6add MD |
170 | |
171 | # Take 2nd snapshot, compare first line. In overwrite mode, they | |
172 | # WILL be different. | |
173 | lttng_snapshot_record $SESSION_NAME | |
174 | FIRST_LINE_2="$(trace_first_line $TRACE_PATH/)" | |
175 | diag "First line (2nd snapshot): $FIRST_LINE_2" | |
176 | rm -rf $TRACE_PATH | |
177 | ||
178 | if [ x"$FIRST_LINE" != x"$FIRST_LINE_2" ]; then | |
ce83431d | 179 | pass "First snapshot event do not match" |
086e6add | 180 | else |
ce83431d | 181 | fail "First snapshot event match" |
086e6add MD |
182 | fi |
183 | ||
184 | stop_lttng_tracing_ok $SESSION_NAME | |
185 | destroy_lttng_session_ok $SESSION_NAME | |
43f71bbd | 186 | modprobe --remove lttng-test |
086e6add MD |
187 | } |
188 | ||
07b86b52 JD |
189 | function test_kernel_1000_local_snapshots () |
190 | { | |
191 | NB_SNAP=1000 | |
192 | ||
193 | diag "Test local kernel snapshots" | |
194 | create_lttng_session_no_output $SESSION_NAME | |
195 | enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME | |
196 | lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME | |
e563bbdb | 197 | start_lttng_tracing_ok $SESSION_NAME |
9f0e230a | 198 | lttng_snapshot_add_output_ok $SESSION_NAME file://$TRACE_PATH |
07b86b52 JD |
199 | for i in $(seq 1 $NB_SNAP); do |
200 | diag "Snapshot $i/$NB_SNAP" | |
201 | rm -rf $TRACE_PATH/snapshot/* 2>/dev/null | |
202 | lttng_snapshot_record $SESSION_NAME | |
203 | # Validate test | |
78435723 | 204 | validate_trace $EVENT_NAME $TRACE_PATH/ |
07b86b52 JD |
205 | if [ $? -eq 0 ]; then |
206 | # Only delete if successful | |
207 | rm -rf $TRACE_PATH | |
208 | else | |
209 | break | |
210 | fi | |
211 | done | |
96340a01 | 212 | stop_lttng_tracing_ok $SESSION_NAME |
67b4c664 | 213 | destroy_lttng_session_ok $SESSION_NAME |
07b86b52 JD |
214 | } |
215 | ||
216 | plan_tests $NUM_TESTS | |
217 | ||
218 | print_test_banner "$TEST_DESC" | |
219 | ||
220 | if [ "$(id -u)" == "0" ]; then | |
221 | isroot=1 | |
222 | else | |
223 | isroot=0 | |
224 | fi | |
225 | ||
ce83431d | 226 | skip $isroot "Root access is needed. Skipping all kernel snapshot tests" $NUM_TESTS || |
07b86b52 | 227 | { |
9c8a3964 JR |
228 | |
229 | validate_lttng_modules_present | |
230 | ||
07b86b52 JD |
231 | start_lttng_sessiond |
232 | ||
233 | #tests=( test_kernel_1000_local_snapshots ) | |
086e6add MD |
234 | tests=( test_kernel_local_snapshot |
235 | test_kernel_local_snapshot_after_stop | |
236 | test_kernel_local_snapshot_append_to_metadata | |
237 | test_kernel_local_snapshot_discard | |
238 | test_kernel_local_snapshot_overwrite_small_buffers | |
239 | test_kernel_1000_local_snapshots | |
240 | ) | |
07b86b52 JD |
241 | |
242 | for fct_test in ${tests[@]}; | |
243 | do | |
244 | SESSION_NAME=$(randstring 16 0) | |
245 | ${fct_test} | |
246 | ||
247 | done | |
248 | ||
249 | stop_lttng_sessiond | |
250 | } |