X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=tests%2Fregression%2Ftools%2Fsnapshots%2Ftest_kernel;h=302e5b341c0b800059a5c84750ead2de5b962714;hb=3a1744008331a0604479d3d7461f77056fad3a64;hp=15b7ec1762c445a0a2429de2512c3d1d1f9bae49;hpb=9d16b343fb9e781fc8d8fa3c448a3f382306dd33;p=lttng-tools.git

diff --git a/tests/regression/tools/snapshots/test_kernel b/tests/regression/tools/snapshots/test_kernel
index 15b7ec176..302e5b341 100755
--- a/tests/regression/tools/snapshots/test_kernel
+++ b/tests/regression/tools/snapshots/test_kernel
@@ -12,9 +12,9 @@ EVENT_NAME="sched_switch"
 SESSION_NAME=""
 CHANNEL_NAME="snapchan"
 
-TRACE_PATH=$(mktemp -d)
+TRACE_PATH=$(mktemp -d -t tmp.test_snapshots_kernel_trace_path.XXXXXX)
 
-NUM_TESTS=2060
+NUM_TESTS=2061
 
 source $TESTDIR/utils/utils.sh
 
@@ -31,12 +31,11 @@ function test_kernel_local_snapshot ()
 	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
 }
 
@@ -57,8 +56,6 @@ function test_kernel_local_snapshot_after_stop ()
 	if [ $? -eq 0 ]; then
 		# Only delete if successful
 		rm -rf $TRACE_PATH
-	else
-		break
 	fi
 }
 
@@ -80,8 +77,6 @@ function test_kernel_local_snapshot_append_to_metadata ()
 	if [ $? -eq 0 ]; then
 		# Only delete if successful
 		rm -rf $TRACE_PATH
-	else
-		break
 	fi
 
 	diag "Adding event $EVENT2"
@@ -93,33 +88,33 @@ function test_kernel_local_snapshot_append_to_metadata ()
 	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()
+function generate_filter_events_cpu0()
 {
-	# Generate many system call events (fill buffers) on CPU 0
-	for a in $(seq 1 $1); do
-		taskset 0x00000001 /bin/true;
-	done
+	# Generate many events (fill buffers) on a single CPU
+	taskset --cpu-list "$(get_any_available_cpu)" /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 $SESSION_NAME file://$TRACE_PATH
 
-	true_loop_cpu0 10000
+	generate_filter_events_cpu0 10000
 
 	# Take first snapshot, remember first line.
 	lttng_snapshot_record $SESSION_NAME
@@ -128,7 +123,8 @@ 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.
@@ -138,26 +134,31 @@ 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 $SESSION_NAME file://$TRACE_PATH
 
-	true_loop_cpu0 10000
+	generate_filter_events_cpu0 10000
 
 	# Take first snapshot, remember first line.
 	lttng_snapshot_record $SESSION_NAME
@@ -166,7 +167,8 @@ 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.
@@ -176,13 +178,14 @@ 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 ()
@@ -216,13 +219,9 @@ plan_tests $NUM_TESTS
 
 print_test_banner "$TEST_DESC"
 
-if [ "$(id -u)" == "0" ]; then
-	isroot=1
-else
-	isroot=0
-fi
+bail_out_if_no_babeltrace
 
-skip $isroot "Root access is needed. Skipping all kernel snapshot tests." $NUM_TESTS ||
+check_skip_kernel_test "$NUM_TESTS" "Skipping all tests." ||
 {
 
 	validate_lttng_modules_present