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07b86b52 JD |
1 | #!/bin/bash |
2 | # | |
3 | # Copyright (C) - 2013 Julien Desfossez <jdesfossez@efficios.com> | |
4 | # | |
5 | # This library is free software; you can redistribute it and/or modify it under | |
6 | # the terms of the GNU Lesser General Public License as published by the Free | |
7 | # Software Foundation; version 2.1 of the License. | |
8 | # | |
9 | # This library is distributed in the hope that it will be useful, but WITHOUT | |
10 | # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
11 | # FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more | |
12 | # details. | |
13 | # | |
14 | # You should have received a copy of the GNU Lesser General Public License | |
15 | # along with this library; if not, write to the Free Software Foundation, Inc., | |
16 | # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
17 | TEST_DESC="Snapshots - Kernel tracing" | |
18 | ||
19 | CURDIR=$(dirname $0)/ | |
20 | TESTDIR=$CURDIR/../../.. | |
21 | EVENT_NAME="sched_switch" | |
22 | PID_RELAYD=0 | |
23 | SESSION_NAME="" | |
24 | CHANNEL_NAME="snapchan" | |
25 | ||
26 | TRACE_PATH=$(mktemp -d) | |
27 | ||
086e6add | 28 | NUM_TESTS=2060 |
07b86b52 JD |
29 | |
30 | source $TESTDIR/utils/utils.sh | |
31 | ||
32 | # LTTng kernel modules check | |
33 | out=`ls /lib/modules/$(uname -r)/extra | grep lttng` | |
34 | if [ -z "$out" ]; then | |
35 | BAIL_OUT "LTTng modules not detected." | |
36 | fi | |
37 | ||
38 | function test_kernel_local_snapshot () | |
39 | { | |
40 | diag "Test local kernel snapshots" | |
41 | create_lttng_session_no_output $SESSION_NAME | |
42 | enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME | |
43 | lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME | |
e563bbdb | 44 | start_lttng_tracing_ok $SESSION_NAME |
b5633831 | 45 | lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH |
07b86b52 | 46 | lttng_snapshot_record $SESSION_NAME |
96340a01 | 47 | stop_lttng_tracing_ok $SESSION_NAME |
67b4c664 | 48 | destroy_lttng_session_ok $SESSION_NAME |
07b86b52 JD |
49 | |
50 | # Validate test | |
78435723 | 51 | validate_trace $EVENT_NAME $TRACE_PATH/ |
07b86b52 JD |
52 | if [ $? -eq 0 ]; then |
53 | # Only delete if successful | |
54 | rm -rf $TRACE_PATH | |
55 | else | |
56 | break | |
57 | fi | |
58 | } | |
59 | ||
60 | function test_kernel_local_snapshot_after_stop () | |
61 | { | |
62 | diag "Test local kernel snapshots after stop" | |
63 | create_lttng_session_no_output $SESSION_NAME | |
64 | enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME | |
65 | lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME | |
e563bbdb | 66 | start_lttng_tracing_ok $SESSION_NAME |
96340a01 | 67 | stop_lttng_tracing_ok $SESSION_NAME |
b5633831 | 68 | lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH |
07b86b52 | 69 | lttng_snapshot_record $SESSION_NAME |
67b4c664 | 70 | destroy_lttng_session_ok $SESSION_NAME |
07b86b52 JD |
71 | |
72 | # Validate test | |
78435723 | 73 | validate_trace $EVENT_NAME $TRACE_PATH/ |
07b86b52 JD |
74 | if [ $? -eq 0 ]; then |
75 | # Only delete if successful | |
76 | rm -rf $TRACE_PATH | |
77 | else | |
78 | break | |
79 | fi | |
80 | } | |
81 | ||
82 | function test_kernel_local_snapshot_append_to_metadata () | |
83 | { | |
78435723 JD |
84 | local EVENT1=sched_switch |
85 | local EVENT2=sched_process_exit | |
07b86b52 JD |
86 | |
87 | diag "Test local kernel snapshots with one event $EVENT1" | |
88 | create_lttng_session_no_output $SESSION_NAME | |
89 | enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME | |
90 | lttng_enable_kernel_event $SESSION_NAME $EVENT1 $CHANNEL_NAME | |
e563bbdb | 91 | start_lttng_tracing_ok $SESSION_NAME |
b5633831 | 92 | lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH |
07b86b52 JD |
93 | |
94 | # first snapshot with only 1 event | |
95 | lttng_snapshot_record $SESSION_NAME | |
78435723 | 96 | validate_trace $EVENT_NAME $TRACE_PATH/ |
07b86b52 JD |
97 | if [ $? -eq 0 ]; then |
98 | # Only delete if successful | |
99 | rm -rf $TRACE_PATH | |
100 | else | |
101 | break | |
102 | fi | |
103 | ||
104 | diag "Adding event $EVENT2" | |
105 | # second snapshot with 2 events | |
106 | lttng_enable_kernel_event $SESSION_NAME $EVENT2 $CHANNEL_NAME | |
107 | rm -rf $TRACE_PATH/snapshot/* 2>/dev/null | |
108 | lttng_snapshot_record $SESSION_NAME | |
78435723 | 109 | validate_trace "${EVENT1},${EVENT2}" $TRACE_PATH/ |
07b86b52 JD |
110 | if [ $? -eq 0 ]; then |
111 | # Only delete if successful | |
112 | rm -rf $TRACE_PATH | |
113 | else | |
114 | break | |
115 | fi | |
116 | ||
96340a01 | 117 | stop_lttng_tracing_ok $SESSION_NAME |
67b4c664 | 118 | destroy_lttng_session_ok $SESSION_NAME |
07b86b52 JD |
119 | } |
120 | ||
086e6add MD |
121 | function true_loop_cpu0() |
122 | { | |
123 | # Generate many system call events (fill buffers) on CPU 0 | |
124 | for a in $(seq 1 $1); do | |
125 | taskset 0x00000001 /bin/true; | |
126 | done | |
127 | } | |
128 | ||
129 | function test_kernel_local_snapshot_discard () | |
130 | { | |
131 | diag "Test local kernel snapshots with small discard buffers" | |
132 | create_lttng_session_no_output $SESSION_NAME | |
133 | enable_lttng_mmap_discard_small_kernel_channel $SESSION_NAME \ | |
134 | $CHANNEL_NAME | |
135 | lttng_enable_kernel_syscall_ok $SESSION_NAME -a $CHANNEL_NAME | |
136 | start_lttng_tracing_ok $SESSION_NAME | |
137 | lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH | |
138 | ||
139 | true_loop_cpu0 10000 | |
140 | ||
141 | # Take first snapshot, remember first line. | |
142 | lttng_snapshot_record $SESSION_NAME | |
143 | FIRST_LINE="$(trace_first_line $TRACE_PATH/)" | |
144 | diag "First line (1st snapshot): $FIRST_LINE" | |
145 | ||
146 | rm -rf $TRACE_PATH | |
147 | ||
148 | true_loop_cpu0 10000 | |
149 | ||
150 | # Take 2nd snapshot, compare first line. In discard mode, they | |
151 | # should still be the same. | |
152 | lttng_snapshot_record $SESSION_NAME | |
153 | FIRST_LINE_2="$(trace_first_line $TRACE_PATH/)" | |
154 | diag "First line (2nd snapshot): $FIRST_LINE" | |
155 | rm -rf $TRACE_PATH | |
156 | ||
157 | if [ x"$FIRST_LINE" != x"$FIRST_LINE_2" ]; then | |
158 | fail "First snapshot event do not match." | |
159 | else | |
160 | pass "First snapshot event match." | |
161 | fi | |
162 | ||
163 | stop_lttng_tracing_ok $SESSION_NAME | |
164 | destroy_lttng_session_ok $SESSION_NAME | |
165 | } | |
166 | ||
167 | function test_kernel_local_snapshot_overwrite_small_buffers () | |
168 | { | |
169 | diag "Test local kernel snapshot with small overwrite buffers" | |
170 | create_lttng_session_no_output $SESSION_NAME | |
171 | enable_lttng_mmap_overwrite_small_kernel_channel $SESSION_NAME \ | |
172 | $CHANNEL_NAME | |
173 | lttng_enable_kernel_syscall_ok $SESSION_NAME -a $CHANNEL_NAME | |
174 | start_lttng_tracing_ok $SESSION_NAME | |
175 | lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH | |
176 | ||
177 | true_loop_cpu0 10000 | |
178 | ||
179 | # Take first snapshot, remember first line. | |
180 | lttng_snapshot_record $SESSION_NAME | |
181 | FIRST_LINE="$(trace_first_line $TRACE_PATH/)" | |
182 | diag "First line (1st snapshot): $FIRST_LINE" | |
183 | ||
184 | rm -rf $TRACE_PATH | |
185 | ||
186 | true_loop_cpu0 10000 | |
187 | ||
188 | # Take 2nd snapshot, compare first line. In overwrite mode, they | |
189 | # WILL be different. | |
190 | lttng_snapshot_record $SESSION_NAME | |
191 | FIRST_LINE_2="$(trace_first_line $TRACE_PATH/)" | |
192 | diag "First line (2nd snapshot): $FIRST_LINE_2" | |
193 | rm -rf $TRACE_PATH | |
194 | ||
195 | if [ x"$FIRST_LINE" != x"$FIRST_LINE_2" ]; then | |
196 | pass "First snapshot event do not match." | |
197 | else | |
198 | fail "First snapshot event match." | |
199 | fi | |
200 | ||
201 | stop_lttng_tracing_ok $SESSION_NAME | |
202 | destroy_lttng_session_ok $SESSION_NAME | |
203 | } | |
204 | ||
07b86b52 JD |
205 | function test_kernel_1000_local_snapshots () |
206 | { | |
207 | NB_SNAP=1000 | |
208 | ||
209 | diag "Test local kernel snapshots" | |
210 | create_lttng_session_no_output $SESSION_NAME | |
211 | enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME | |
212 | lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME | |
e563bbdb | 213 | start_lttng_tracing_ok $SESSION_NAME |
b5633831 | 214 | lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH |
07b86b52 JD |
215 | for i in $(seq 1 $NB_SNAP); do |
216 | diag "Snapshot $i/$NB_SNAP" | |
217 | rm -rf $TRACE_PATH/snapshot/* 2>/dev/null | |
218 | lttng_snapshot_record $SESSION_NAME | |
219 | # Validate test | |
78435723 | 220 | validate_trace $EVENT_NAME $TRACE_PATH/ |
07b86b52 JD |
221 | if [ $? -eq 0 ]; then |
222 | # Only delete if successful | |
223 | rm -rf $TRACE_PATH | |
224 | else | |
225 | break | |
226 | fi | |
227 | done | |
96340a01 | 228 | stop_lttng_tracing_ok $SESSION_NAME |
67b4c664 | 229 | destroy_lttng_session_ok $SESSION_NAME |
07b86b52 JD |
230 | } |
231 | ||
232 | plan_tests $NUM_TESTS | |
233 | ||
234 | print_test_banner "$TEST_DESC" | |
235 | ||
236 | if [ "$(id -u)" == "0" ]; then | |
237 | isroot=1 | |
238 | else | |
239 | isroot=0 | |
240 | fi | |
241 | ||
242 | skip $isroot "Root access is needed. Skipping all kernel snapshot tests." $NUM_TESTS || | |
243 | { | |
244 | start_lttng_sessiond | |
245 | ||
246 | #tests=( test_kernel_1000_local_snapshots ) | |
086e6add MD |
247 | tests=( test_kernel_local_snapshot |
248 | test_kernel_local_snapshot_after_stop | |
249 | test_kernel_local_snapshot_append_to_metadata | |
250 | test_kernel_local_snapshot_discard | |
251 | test_kernel_local_snapshot_overwrite_small_buffers | |
252 | test_kernel_1000_local_snapshots | |
253 | ) | |
07b86b52 JD |
254 | |
255 | for fct_test in ${tests[@]}; | |
256 | do | |
257 | SESSION_NAME=$(randstring 16 0) | |
258 | ${fct_test} | |
259 | ||
260 | done | |
261 | ||
262 | stop_lttng_sessiond | |
263 | } |