X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=tests%2Fregression%2Ftools%2Fsnapshots%2Ftest_kernel;h=02cf98d945516b416c552d6abd3c6efdb611ce8a;hb=dcab38776573ef1a59f79f6d4b77825451e9cb62;hp=886c4557a513732b093f53c61f5f6992ca016445;hpb=086e6add1bf22aa48ef5a3c3e800eea7020a1fed;p=lttng-tools.git

diff --git a/tests/regression/tools/snapshots/test_kernel b/tests/regression/tools/snapshots/test_kernel
index 886c4557a..02cf98d94 100755
--- a/tests/regression/tools/snapshots/test_kernel
+++ b/tests/regression/tools/snapshots/test_kernel
@@ -1,40 +1,23 @@
 #!/bin/bash
 #
-# Copyright (C) - 2013 Julien Desfossez <jdesfossez@efficios.com>
+# 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
+# SPDX-License-Identifier: LGPL-2.1-only
+
 TEST_DESC="Snapshots - Kernel tracing"
 
 CURDIR=$(dirname $0)/
 TESTDIR=$CURDIR/../../..
 EVENT_NAME="sched_switch"
-PID_RELAYD=0
 SESSION_NAME=""
 CHANNEL_NAME="snapchan"
 
-TRACE_PATH=$(mktemp -d)
+TRACE_PATH=$(mktemp --tmpdir -d tmp.test_snapshots_kernel_trace_path.XXXXXX)
 
-NUM_TESTS=2060
+NUM_TESTS=2061
 
 source $TESTDIR/utils/utils.sh
 
-# LTTng kernel modules check
-out=`ls /lib/modules/$(uname -r)/extra | grep lttng`
-if [ -z "$out" ]; then
-	BAIL_OUT "LTTng modules not detected."
-fi
-
 function test_kernel_local_snapshot ()
 {
 	diag "Test local kernel snapshots"
@@ -42,18 +25,17 @@ function test_kernel_local_snapshot ()
 	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_add_output_ok $SESSION_NAME file://$TRACE_PATH
 	lttng_snapshot_record $SESSION_NAME
 	stop_lttng_tracing_ok $SESSION_NAME
 	destroy_lttng_session_ok $SESSION_NAME
 
 	# Validate test
+	validate_trace_path_kernel_snapshot "$TRACE_PATH" "" "snapshot-1" 0 ""
 	validate_trace $EVENT_NAME $TRACE_PATH/
 	if [ $? -eq 0 ]; then
 		# Only delete if successful
 		rm -rf $TRACE_PATH
-	else
-		break
 	fi
 }
 
@@ -65,7 +47,7 @@ function test_kernel_local_snapshot_after_stop ()
 	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_add_output_ok $SESSION_NAME file://$TRACE_PATH
 	lttng_snapshot_record $SESSION_NAME
 	destroy_lttng_session_ok $SESSION_NAME
 
@@ -89,7 +71,7 @@ function test_kernel_local_snapshot_append_to_metadata ()
 	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
+	lttng_snapshot_add_output_ok $SESSION_NAME file://$TRACE_PATH
 
 	# first snapshot with only 1 event
 	lttng_snapshot_record $SESSION_NAME
@@ -118,25 +100,27 @@ function test_kernel_local_snapshot_append_to_metadata ()
 	destroy_lttng_session_ok $SESSION_NAME
 }
 
-function true_loop_cpu0()
+function generate_filter_events_cpu0()
 {
-	# Generate many system call events (fill buffers) on CPU 0
-	for a in $(seq 1 $1); do
-		taskset 0x00000001 /bin/true;
-	done
+	# Generate many events (fill buffers) on CPU 0
+	taskset 0x00000001 /bin/echo -n "$1" > /proc/lttng-test-filter-event 2> /dev/null
 }
 
 function test_kernel_local_snapshot_discard ()
 {
 	diag "Test local kernel snapshots with small discard buffers"
+
+	local event_name="lttng_test_filter_event"
+
+	modprobe lttng-test
 	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
+	enable_kernel_lttng_event_ok $SESSION_NAME $event_name $CHANNEL_NAME
 	start_lttng_tracing_ok $SESSION_NAME
-	lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH
+	lttng_snapshot_add_output_ok $SESSION_NAME file://$TRACE_PATH
 
-	true_loop_cpu0 10000
+	generate_filter_events_cpu0 10000
 
 	# Take first snapshot, remember first line.
 	lttng_snapshot_record $SESSION_NAME
@@ -145,7 +129,8 @@ function test_kernel_local_snapshot_discard ()
 
 	rm -rf $TRACE_PATH
 
-	true_loop_cpu0 10000
+	# Fill CPU 0's buffer and overwrite previous contents
+	generate_filter_events_cpu0 10000
 
 	# Take 2nd snapshot, compare first line. In discard mode, they
 	# should still be the same.
@@ -155,26 +140,31 @@ function test_kernel_local_snapshot_discard ()
 	rm -rf $TRACE_PATH
 
 	if [ x"$FIRST_LINE" != x"$FIRST_LINE_2" ]; then
-		fail "First snapshot event do not match."
+		fail "First snapshot event do not match"
 	else
-		pass "First snapshot event match."
+		pass "First snapshot event match"
 	fi
 
 	stop_lttng_tracing_ok $SESSION_NAME
 	destroy_lttng_session_ok $SESSION_NAME
+	modprobe --remove lttng-test
 }
 
 function test_kernel_local_snapshot_overwrite_small_buffers ()
 {
 	diag "Test local kernel snapshot with small overwrite buffers"
+
+	local event_name="lttng_test_filter_event"
+
+	modprobe lttng-test
 	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
+	enable_kernel_lttng_event_ok $SESSION_NAME $event_name $CHANNEL_NAME
 	start_lttng_tracing_ok $SESSION_NAME
-	lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH
+	lttng_snapshot_add_output_ok $SESSION_NAME file://$TRACE_PATH
 
-	true_loop_cpu0 10000
+	generate_filter_events_cpu0 10000
 
 	# Take first snapshot, remember first line.
 	lttng_snapshot_record $SESSION_NAME
@@ -183,7 +173,8 @@ function test_kernel_local_snapshot_overwrite_small_buffers ()
 
 	rm -rf $TRACE_PATH
 
-	true_loop_cpu0 10000
+	# Fill CPU 0's buffer and overwrite previous contents
+	generate_filter_events_cpu0 10000
 
 	# Take 2nd snapshot, compare first line. In overwrite mode, they
 	# WILL be different.
@@ -193,13 +184,14 @@ function test_kernel_local_snapshot_overwrite_small_buffers ()
 	rm -rf $TRACE_PATH
 
 	if [ x"$FIRST_LINE" != x"$FIRST_LINE_2" ]; then
-		pass "First snapshot event do not match."
+		pass "First snapshot event do not match"
 	else
-		fail "First snapshot event match."
+		fail "First snapshot event match"
 	fi
 
 	stop_lttng_tracing_ok $SESSION_NAME
 	destroy_lttng_session_ok $SESSION_NAME
+	modprobe --remove lttng-test
 }
 
 function test_kernel_1000_local_snapshots ()
@@ -211,7 +203,7 @@ function test_kernel_1000_local_snapshots ()
 	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_add_output_ok $SESSION_NAME file://$TRACE_PATH
 	for i in $(seq 1 $NB_SNAP); do
 		diag "Snapshot $i/$NB_SNAP"
 		rm -rf $TRACE_PATH/snapshot/* 2>/dev/null
@@ -233,14 +225,20 @@ plan_tests $NUM_TESTS
 
 print_test_banner "$TEST_DESC"
 
+bail_out_if_no_babeltrace
+
+
 if [ "$(id -u)" == "0" ]; then
 	isroot=1
 else
 	isroot=0
 fi
 
-skip $isroot "Root access is needed. Skipping all kernel snapshot tests." $NUM_TESTS ||
+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 )