Fix: snapshot path have domain subdir duplicate "ust/ust" or "kernel/kernel"
[lttng-tools.git] / tests / regression / tools / snapshots / test_kernel
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1#!/bin/bash
2#
9d16b343 3# Copyright (C) 2013 Julien Desfossez <jdesfossez@efficios.com>
07b86b52 4#
9d16b343
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5# SPDX-License-Identifier: LGPL-2.1-only
6
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7TEST_DESC="Snapshots - Kernel tracing"
8
9CURDIR=$(dirname $0)/
10TESTDIR=$CURDIR/../../..
11EVENT_NAME="sched_switch"
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12SESSION_NAME=""
13CHANNEL_NAME="snapchan"
14
15TRACE_PATH=$(mktemp -d)
16
bd666153 17NUM_TESTS=2061
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18
19source $TESTDIR/utils/utils.sh
20
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21function 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 $SESSION_NAME
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32
33 # Validate test
bd666153 34 validate_trace_path_kernel_snapshot "$TRACE_PATH" "" "snapshot-1" 0 ""
78435723 35 validate_trace $EVENT_NAME $TRACE_PATH/
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36 if [ $? -eq 0 ]; then
37 # Only delete if successful
38 rm -rf $TRACE_PATH
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39 fi
40}
41
42function 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
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53
54 # Validate test
78435723 55 validate_trace $EVENT_NAME $TRACE_PATH/
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56 if [ $? -eq 0 ]; then
57 # Only delete if successful
58 rm -rf $TRACE_PATH
59 else
60 break
61 fi
62}
63
64function test_kernel_local_snapshot_append_to_metadata ()
65{
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66 local EVENT1=sched_switch
67 local EVENT2=sched_process_exit
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68
69 diag "Test local kernel snapshots with one event $EVENT1"
70 create_lttng_session_no_output $SESSION_NAME
71 enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
72 lttng_enable_kernel_event $SESSION_NAME $EVENT1 $CHANNEL_NAME
e563bbdb 73 start_lttng_tracing_ok $SESSION_NAME
9f0e230a 74 lttng_snapshot_add_output_ok $SESSION_NAME file://$TRACE_PATH
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75
76 # first snapshot with only 1 event
77 lttng_snapshot_record $SESSION_NAME
78435723 78 validate_trace $EVENT_NAME $TRACE_PATH/
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79 if [ $? -eq 0 ]; then
80 # Only delete if successful
81 rm -rf $TRACE_PATH
82 else
83 break
84 fi
85
86 diag "Adding event $EVENT2"
87 # second snapshot with 2 events
88 lttng_enable_kernel_event $SESSION_NAME $EVENT2 $CHANNEL_NAME
89 rm -rf $TRACE_PATH/snapshot/* 2>/dev/null
90 lttng_snapshot_record $SESSION_NAME
78435723 91 validate_trace "${EVENT1},${EVENT2}" $TRACE_PATH/
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92 if [ $? -eq 0 ]; then
93 # Only delete if successful
94 rm -rf $TRACE_PATH
95 else
96 break
97 fi
98
96340a01 99 stop_lttng_tracing_ok $SESSION_NAME
67b4c664 100 destroy_lttng_session_ok $SESSION_NAME
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101}
102
086e6add
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103function true_loop_cpu0()
104{
105 # Generate many system call events (fill buffers) on CPU 0
106 for a in $(seq 1 $1); do
107 taskset 0x00000001 /bin/true;
108 done
109}
110
111function test_kernel_local_snapshot_discard ()
112{
113 diag "Test local kernel snapshots with small discard buffers"
114 create_lttng_session_no_output $SESSION_NAME
115 enable_lttng_mmap_discard_small_kernel_channel $SESSION_NAME \
116 $CHANNEL_NAME
117 lttng_enable_kernel_syscall_ok $SESSION_NAME -a $CHANNEL_NAME
118 start_lttng_tracing_ok $SESSION_NAME
9f0e230a 119 lttng_snapshot_add_output_ok $SESSION_NAME file://$TRACE_PATH
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120
121 true_loop_cpu0 10000
122
123 # Take first snapshot, remember first line.
124 lttng_snapshot_record $SESSION_NAME
125 FIRST_LINE="$(trace_first_line $TRACE_PATH/)"
126 diag "First line (1st snapshot): $FIRST_LINE"
127
128 rm -rf $TRACE_PATH
129
130 true_loop_cpu0 10000
131
132 # Take 2nd snapshot, compare first line. In discard mode, they
133 # should still be the same.
134 lttng_snapshot_record $SESSION_NAME
135 FIRST_LINE_2="$(trace_first_line $TRACE_PATH/)"
136 diag "First line (2nd snapshot): $FIRST_LINE"
137 rm -rf $TRACE_PATH
138
139 if [ x"$FIRST_LINE" != x"$FIRST_LINE_2" ]; then
ce83431d 140 fail "First snapshot event do not match"
086e6add 141 else
ce83431d 142 pass "First snapshot event match"
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143 fi
144
145 stop_lttng_tracing_ok $SESSION_NAME
146 destroy_lttng_session_ok $SESSION_NAME
147}
148
149function test_kernel_local_snapshot_overwrite_small_buffers ()
150{
151 diag "Test local kernel snapshot with small overwrite buffers"
152 create_lttng_session_no_output $SESSION_NAME
153 enable_lttng_mmap_overwrite_small_kernel_channel $SESSION_NAME \
154 $CHANNEL_NAME
155 lttng_enable_kernel_syscall_ok $SESSION_NAME -a $CHANNEL_NAME
156 start_lttng_tracing_ok $SESSION_NAME
9f0e230a 157 lttng_snapshot_add_output_ok $SESSION_NAME file://$TRACE_PATH
086e6add
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158
159 true_loop_cpu0 10000
160
161 # Take first snapshot, remember first line.
162 lttng_snapshot_record $SESSION_NAME
163 FIRST_LINE="$(trace_first_line $TRACE_PATH/)"
164 diag "First line (1st snapshot): $FIRST_LINE"
165
166 rm -rf $TRACE_PATH
167
168 true_loop_cpu0 10000
169
170 # Take 2nd snapshot, compare first line. In overwrite mode, they
171 # WILL be different.
172 lttng_snapshot_record $SESSION_NAME
173 FIRST_LINE_2="$(trace_first_line $TRACE_PATH/)"
174 diag "First line (2nd snapshot): $FIRST_LINE_2"
175 rm -rf $TRACE_PATH
176
177 if [ x"$FIRST_LINE" != x"$FIRST_LINE_2" ]; then
ce83431d 178 pass "First snapshot event do not match"
086e6add 179 else
ce83431d 180 fail "First snapshot event match"
086e6add
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181 fi
182
183 stop_lttng_tracing_ok $SESSION_NAME
184 destroy_lttng_session_ok $SESSION_NAME
185}
186
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187function test_kernel_1000_local_snapshots ()
188{
189 NB_SNAP=1000
190
191 diag "Test local kernel snapshots"
192 create_lttng_session_no_output $SESSION_NAME
193 enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
194 lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
e563bbdb 195 start_lttng_tracing_ok $SESSION_NAME
9f0e230a 196 lttng_snapshot_add_output_ok $SESSION_NAME file://$TRACE_PATH
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197 for i in $(seq 1 $NB_SNAP); do
198 diag "Snapshot $i/$NB_SNAP"
199 rm -rf $TRACE_PATH/snapshot/* 2>/dev/null
200 lttng_snapshot_record $SESSION_NAME
201 # Validate test
78435723 202 validate_trace $EVENT_NAME $TRACE_PATH/
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203 if [ $? -eq 0 ]; then
204 # Only delete if successful
205 rm -rf $TRACE_PATH
206 else
207 break
208 fi
209 done
96340a01 210 stop_lttng_tracing_ok $SESSION_NAME
67b4c664 211 destroy_lttng_session_ok $SESSION_NAME
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212}
213
214plan_tests $NUM_TESTS
215
216print_test_banner "$TEST_DESC"
217
218if [ "$(id -u)" == "0" ]; then
219 isroot=1
220else
221 isroot=0
222fi
223
ce83431d 224skip $isroot "Root access is needed. Skipping all kernel snapshot tests" $NUM_TESTS ||
07b86b52 225{
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226
227 validate_lttng_modules_present
228
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229 start_lttng_sessiond
230
231 #tests=( test_kernel_1000_local_snapshots )
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232 tests=( test_kernel_local_snapshot
233 test_kernel_local_snapshot_after_stop
234 test_kernel_local_snapshot_append_to_metadata
235 test_kernel_local_snapshot_discard
236 test_kernel_local_snapshot_overwrite_small_buffers
237 test_kernel_1000_local_snapshots
238 )
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239
240 for fct_test in ${tests[@]};
241 do
242 SESSION_NAME=$(randstring 16 0)
243 ${fct_test}
244
245 done
246
247 stop_lttng_sessiond
248}
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