[lttng-tools.git] / tests / regression / tools / snapshots / test_kernel

#!/bin/bash
#
# Copyright (C) - 2013 Julien Desfossez <jdesfossez@efficios.com>
#
# This library is free software; you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the Free
# Software Foundation; version 2.1 of the License.
#
# This library is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this library; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
TEST_DESC="Snapshots - Kernel tracing"

CURDIR=$(dirname $0)/
TESTDIR=$CURDIR/../../..
EVENT_NAME="sched_switch"
SESSION_NAME=""
CHANNEL_NAME="snapchan"

TRACE_PATH=$(mktemp -d)

NUM_TESTS=2060

source $TESTDIR/utils/utils.sh

function test_kernel_local_snapshot ()
{
	diag "Test local kernel snapshots"
	create_lttng_session_no_output $SESSION_NAME
	enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
	lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
	start_lttng_tracing_ok $SESSION_NAME
	lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH
	lttng_snapshot_record $SESSION_NAME
	stop_lttng_tracing_ok $SESSION_NAME
	destroy_lttng_session_ok $SESSION_NAME

	# Validate test
	validate_trace $EVENT_NAME $TRACE_PATH/
	if [ $? -eq 0 ]; then
		# Only delete if successful
		rm -rf $TRACE_PATH
	else
		break
	fi
}

function test_kernel_local_snapshot_after_stop ()
{
	diag "Test local kernel snapshots after stop"
	create_lttng_session_no_output $SESSION_NAME
	enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
	lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
	start_lttng_tracing_ok $SESSION_NAME
	stop_lttng_tracing_ok $SESSION_NAME
	lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH
	lttng_snapshot_record $SESSION_NAME
	destroy_lttng_session_ok $SESSION_NAME

	# Validate test
	validate_trace $EVENT_NAME $TRACE_PATH/
	if [ $? -eq 0 ]; then
		# Only delete if successful
		rm -rf $TRACE_PATH
	else
		break
	fi
}

function test_kernel_local_snapshot_append_to_metadata ()
{
	local EVENT1=sched_switch
	local EVENT2=sched_process_exit

	diag "Test local kernel snapshots with one event $EVENT1"
	create_lttng_session_no_output $SESSION_NAME
	enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
	lttng_enable_kernel_event $SESSION_NAME $EVENT1 $CHANNEL_NAME
	start_lttng_tracing_ok $SESSION_NAME
	lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH

	# first snapshot with only 1 event
	lttng_snapshot_record $SESSION_NAME
	validate_trace $EVENT_NAME $TRACE_PATH/
	if [ $? -eq 0 ]; then
		# Only delete if successful
		rm -rf $TRACE_PATH
	else
		break
	fi

	diag "Adding event $EVENT2"
	# second snapshot with 2 events
	lttng_enable_kernel_event $SESSION_NAME $EVENT2 $CHANNEL_NAME
	rm -rf $TRACE_PATH/snapshot/* 2>/dev/null
	lttng_snapshot_record $SESSION_NAME
	validate_trace "${EVENT1},${EVENT2}" $TRACE_PATH/
	if [ $? -eq 0 ]; then
		# Only delete if successful
		rm -rf $TRACE_PATH
	else
		break
	fi

	stop_lttng_tracing_ok $SESSION_NAME
	destroy_lttng_session_ok $SESSION_NAME
}

function true_loop_cpu0()
{
	# Generate many system call events (fill buffers) on CPU 0
	for a in $(seq 1 $1); do
		taskset 0x00000001 /bin/true;
	done
}

function test_kernel_local_snapshot_discard ()
{
	diag "Test local kernel snapshots with small discard buffers"
	create_lttng_session_no_output $SESSION_NAME
	enable_lttng_mmap_discard_small_kernel_channel $SESSION_NAME \
			$CHANNEL_NAME
	lttng_enable_kernel_syscall_ok $SESSION_NAME -a $CHANNEL_NAME
	start_lttng_tracing_ok $SESSION_NAME
	lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH

	true_loop_cpu0 10000

	# Take first snapshot, remember first line.
	lttng_snapshot_record $SESSION_NAME
	FIRST_LINE="$(trace_first_line $TRACE_PATH/)"
	diag "First line (1st snapshot): $FIRST_LINE"

	rm -rf $TRACE_PATH

	true_loop_cpu0 10000

	# Take 2nd snapshot, compare first line. In discard mode, they
	# should still be the same.
	lttng_snapshot_record $SESSION_NAME
	FIRST_LINE_2="$(trace_first_line $TRACE_PATH/)"
	diag "First line (2nd snapshot): $FIRST_LINE"
	rm -rf $TRACE_PATH

	if [ x"$FIRST_LINE" != x"$FIRST_LINE_2" ]; then
		fail "First snapshot event do not match."
	else
		pass "First snapshot event match."
	fi

	stop_lttng_tracing_ok $SESSION_NAME
	destroy_lttng_session_ok $SESSION_NAME
}

function test_kernel_local_snapshot_overwrite_small_buffers ()
{
	diag "Test local kernel snapshot with small overwrite buffers"
	create_lttng_session_no_output $SESSION_NAME
	enable_lttng_mmap_overwrite_small_kernel_channel $SESSION_NAME \
			$CHANNEL_NAME
	lttng_enable_kernel_syscall_ok $SESSION_NAME -a $CHANNEL_NAME
	start_lttng_tracing_ok $SESSION_NAME
	lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH

	true_loop_cpu0 10000

	# Take first snapshot, remember first line.
	lttng_snapshot_record $SESSION_NAME
	FIRST_LINE="$(trace_first_line $TRACE_PATH/)"
	diag "First line (1st snapshot): $FIRST_LINE"

	rm -rf $TRACE_PATH

	true_loop_cpu0 10000

	# Take 2nd snapshot, compare first line. In overwrite mode, they
	# WILL be different.
	lttng_snapshot_record $SESSION_NAME
	FIRST_LINE_2="$(trace_first_line $TRACE_PATH/)"
	diag "First line (2nd snapshot): $FIRST_LINE_2"
	rm -rf $TRACE_PATH

	if [ x"$FIRST_LINE" != x"$FIRST_LINE_2" ]; then
		pass "First snapshot event do not match."
	else
		fail "First snapshot event match."
	fi

	stop_lttng_tracing_ok $SESSION_NAME
	destroy_lttng_session_ok $SESSION_NAME
}

function test_kernel_1000_local_snapshots ()
{
	NB_SNAP=1000

	diag "Test local kernel snapshots"
	create_lttng_session_no_output $SESSION_NAME
	enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
	lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
	start_lttng_tracing_ok $SESSION_NAME
	lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH
	for i in $(seq 1 $NB_SNAP); do
		diag "Snapshot $i/$NB_SNAP"
		rm -rf $TRACE_PATH/snapshot/* 2>/dev/null
		lttng_snapshot_record $SESSION_NAME
		# Validate test
		validate_trace $EVENT_NAME $TRACE_PATH/
		if [ $? -eq 0 ]; then
			# Only delete if successful
			rm -rf $TRACE_PATH
		else
			break
		fi
	done
	stop_lttng_tracing_ok $SESSION_NAME
	destroy_lttng_session_ok $SESSION_NAME
}

plan_tests $NUM_TESTS

print_test_banner "$TEST_DESC"

if [ "$(id -u)" == "0" ]; then
	isroot=1
else
	isroot=0
fi

skip $isroot "Root access is needed. Skipping all kernel snapshot tests." $NUM_TESTS ||
{

	validate_lttng_modules_present

	start_lttng_sessiond

	#tests=( test_kernel_1000_local_snapshots )
	tests=( test_kernel_local_snapshot
		test_kernel_local_snapshot_after_stop
		test_kernel_local_snapshot_append_to_metadata
		test_kernel_local_snapshot_discard
		test_kernel_local_snapshot_overwrite_small_buffers
		test_kernel_1000_local_snapshots
	)

	for fct_test in ${tests[@]};
	do
		SESSION_NAME=$(randstring 16 0)
		${fct_test}

	done

	stop_lttng_sessiond
}
Commit	Line	Data
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"
07b86b52 JD	22	SESSION_NAME=""
	23	CHANNEL_NAME="snapchan"
	24
	25	TRACE_PATH=$(mktemp -d)
	26
086e6add	27	NUM_TESTS=2060
07b86b52 JD	28
	29	source $TESTDIR/utils/utils.sh
	30
07b86b52 JD	31	function test_kernel_local_snapshot ()
	32	{
	33	diag "Test local kernel snapshots"
	34	create_lttng_session_no_output $SESSION_NAME
	35	enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
	36	lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
e563bbdb	37	start_lttng_tracing_ok $SESSION_NAME
b5633831	38	lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH
07b86b52	39	lttng_snapshot_record $SESSION_NAME
96340a01	40	stop_lttng_tracing_ok $SESSION_NAME
67b4c664	41	destroy_lttng_session_ok $SESSION_NAME
07b86b52 JD	42
07b86b52 JD	43	# Validate test
78435723	44	validate_trace $EVENT_NAME $TRACE_PATH/
07b86b52 JD	45	if [ $? -eq 0 ]; then
	46	# Only delete if successful
	47	rm -rf $TRACE_PATH
	48	else
	49	break
	50	fi
	51	}
	52
	53	function test_kernel_local_snapshot_after_stop ()
	54	{
	55	diag "Test local kernel snapshots after stop"
	56	create_lttng_session_no_output $SESSION_NAME
	57	enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
	58	lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
e563bbdb	59	start_lttng_tracing_ok $SESSION_NAME
96340a01	60	stop_lttng_tracing_ok $SESSION_NAME
b5633831	61	lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH
07b86b52	62	lttng_snapshot_record $SESSION_NAME
67b4c664	63	destroy_lttng_session_ok $SESSION_NAME
07b86b52 JD	64
07b86b52 JD	65	# Validate test
78435723	66	validate_trace $EVENT_NAME $TRACE_PATH/
07b86b52 JD	67	if [ $? -eq 0 ]; then
	68	# Only delete if successful
	69	rm -rf $TRACE_PATH
	70	else
	71	break
	72	fi
	73	}
	74
	75	function test_kernel_local_snapshot_append_to_metadata ()
	76	{
78435723 JD	77	local EVENT1=sched_switch
78435723 JD	78	local EVENT2=sched_process_exit
07b86b52 JD	79
	80	diag "Test local kernel snapshots with one event $EVENT1"
	81	create_lttng_session_no_output $SESSION_NAME
	82	enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
	83	lttng_enable_kernel_event $SESSION_NAME $EVENT1 $CHANNEL_NAME
e563bbdb	84	start_lttng_tracing_ok $SESSION_NAME
b5633831	85	lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH
07b86b52 JD	86
	87	# first snapshot with only 1 event
	88	lttng_snapshot_record $SESSION_NAME
78435723	89	validate_trace $EVENT_NAME $TRACE_PATH/
07b86b52 JD	90	if [ $? -eq 0 ]; then
	91	# Only delete if successful
	92	rm -rf $TRACE_PATH
	93	else
	94	break
	95	fi
	96
	97	diag "Adding event $EVENT2"
	98	# second snapshot with 2 events
	99	lttng_enable_kernel_event $SESSION_NAME $EVENT2 $CHANNEL_NAME
	100	rm -rf $TRACE_PATH/snapshot/* 2>/dev/null
	101	lttng_snapshot_record $SESSION_NAME
78435723	102	validate_trace "${EVENT1},${EVENT2}" $TRACE_PATH/
07b86b52 JD	103	if [ $? -eq 0 ]; then
	104	# Only delete if successful
	105	rm -rf $TRACE_PATH
	106	else
	107	break
	108	fi
	109
96340a01	110	stop_lttng_tracing_ok $SESSION_NAME
67b4c664	111	destroy_lttng_session_ok $SESSION_NAME
07b86b52 JD	112	}
07b86b52 JD	113
086e6add MD	114	function true_loop_cpu0()
	115	{
	116	# Generate many system call events (fill buffers) on CPU 0
	117	for a in $(seq 1 $1); do
	118	taskset 0x00000001 /bin/true;
	119	done
	120	}
	121
	122	function test_kernel_local_snapshot_discard ()
	123	{
	124	diag "Test local kernel snapshots with small discard buffers"
	125	create_lttng_session_no_output $SESSION_NAME
	126	enable_lttng_mmap_discard_small_kernel_channel $SESSION_NAME \
	127	$CHANNEL_NAME
	128	lttng_enable_kernel_syscall_ok $SESSION_NAME -a $CHANNEL_NAME
	129	start_lttng_tracing_ok $SESSION_NAME
	130	lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH
	131
	132	true_loop_cpu0 10000
	133
	134	# Take first snapshot, remember first line.
	135	lttng_snapshot_record $SESSION_NAME
	136	FIRST_LINE="$(trace_first_line $TRACE_PATH/)"
	137	diag "First line (1st snapshot): $FIRST_LINE"
	138
	139	rm -rf $TRACE_PATH
	140
	141	true_loop_cpu0 10000
	142
	143	# Take 2nd snapshot, compare first line. In discard mode, they
	144	# should still be the same.
	145	lttng_snapshot_record $SESSION_NAME
	146	FIRST_LINE_2="$(trace_first_line $TRACE_PATH/)"
	147	diag "First line (2nd snapshot): $FIRST_LINE"
	148	rm -rf $TRACE_PATH
	149
	150	if [ x"$FIRST_LINE" != x"$FIRST_LINE_2" ]; then
	151	fail "First snapshot event do not match."
	152	else
	153	pass "First snapshot event match."
	154	fi
	155
	156	stop_lttng_tracing_ok $SESSION_NAME
	157	destroy_lttng_session_ok $SESSION_NAME
	158	}
	159
	160	function test_kernel_local_snapshot_overwrite_small_buffers ()
	161	{
	162	diag "Test local kernel snapshot with small overwrite buffers"
	163	create_lttng_session_no_output $SESSION_NAME
	164	enable_lttng_mmap_overwrite_small_kernel_channel $SESSION_NAME \
	165	$CHANNEL_NAME
	166	lttng_enable_kernel_syscall_ok $SESSION_NAME -a $CHANNEL_NAME
	167	start_lttng_tracing_ok $SESSION_NAME
	168	lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH
	169
	170	true_loop_cpu0 10000
	171
	172	# Take first snapshot, remember first line.
	173	lttng_snapshot_record $SESSION_NAME
	174	FIRST_LINE="$(trace_first_line $TRACE_PATH/)"
	175	diag "First line (1st snapshot): $FIRST_LINE"
	176
	177	rm -rf $TRACE_PATH
178
179	true_loop_cpu0 10000
180
181	# Take 2nd snapshot, compare first line. In overwrite mode, they
182	# WILL be different.
183	lttng_snapshot_record $SESSION_NAME
184	FIRST_LINE_2="$(trace_first_line $TRACE_PATH/)"
185	diag "First line (2nd snapshot): $FIRST_LINE_2"
186	rm -rf $TRACE_PATH
187
188	if [ x"$FIRST_LINE" != x"$FIRST_LINE_2" ]; then
189	pass "First snapshot event do not match."
190	else
191	fail "First snapshot event match."
192	fi
193
194	stop_lttng_tracing_ok $SESSION_NAME
195	destroy_lttng_session_ok $SESSION_NAME
196	}
197
07b86b52 JD	198	function test_kernel_1000_local_snapshots ()
	199	{
	200	NB_SNAP=1000
	201
	202	diag "Test local kernel snapshots"
	203	create_lttng_session_no_output $SESSION_NAME
	204	enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
	205	lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
e563bbdb	206	start_lttng_tracing_ok $SESSION_NAME
b5633831	207	lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH
07b86b52 JD	208	for i in $(seq 1 $NB_SNAP); do
	209	diag "Snapshot $i/$NB_SNAP"
	210	rm -rf $TRACE_PATH/snapshot/* 2>/dev/null
	211	lttng_snapshot_record $SESSION_NAME
	212	# Validate test
78435723	213	validate_trace $EVENT_NAME $TRACE_PATH/
07b86b52 JD	214	if [ $? -eq 0 ]; then
	215	# Only delete if successful
	216	rm -rf $TRACE_PATH
	217	else
	218	break
	219	fi
	220	done
96340a01	221	stop_lttng_tracing_ok $SESSION_NAME
67b4c664	222	destroy_lttng_session_ok $SESSION_NAME
07b86b52 JD	223	}
	224
	225	plan_tests $NUM_TESTS
	226
	227	print_test_banner "$TEST_DESC"
	228
	229	if [ "$(id -u)" == "0" ]; then
	230	isroot=1
	231	else
	232	isroot=0
	233	fi
	234
	235	skip $isroot "Root access is needed. Skipping all kernel snapshot tests." $NUM_TESTS \|\|
	236	{
9c8a3964 JR	237
	238	validate_lttng_modules_present
	239
07b86b52 JD	240	start_lttng_sessiond
	241
	242	#tests=( test_kernel_1000_local_snapshots )
086e6add MD	243	tests=( test_kernel_local_snapshot
	244	test_kernel_local_snapshot_after_stop
	245	test_kernel_local_snapshot_append_to_metadata
	246	test_kernel_local_snapshot_discard
	247	test_kernel_local_snapshot_overwrite_small_buffers
	248	test_kernel_1000_local_snapshots
	249	)
07b86b52 JD	250
	251	for fct_test in ${tests[@]};
	252	do
	253	SESSION_NAME=$(randstring 16 0)
	254	${fct_test}
	255
	256	done
	257
	258	stop_lttng_sessiond
	259	}