1 files changed, 99 insertions, 0 deletions
diff --git a/tools/testing/selftests/ftrace/test.d/remotes/functions b/tools/testing/selftests/ftrace/test.d/remotes/functions
new file mode 100644
index 000000000000..05224fac3653
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/remotes/functions
@@ -0,0 +1,99 @@
+# SPDX-License-Identifier: GPL-2.0
+
+setup_remote()
+{
+	local name=$1
+
+	[ -e $TRACING_DIR/remotes/$name/write_event ] || exit_unresolved
+
+	cd remotes/$name/
+	echo 0 > tracing_on
+	clear_trace
+	echo 7 > buffer_size_kb
+	echo 0 > events/enable
+	echo 1 > events/$name/selftest/enable
+	echo 1 > tracing_on
+}
+
+setup_remote_test()
+{
+	[ -d $TRACING_DIR/remotes/test/ ] || modprobe remote_test || exit_unresolved
+
+	setup_remote "test"
+}
+
+assert_loaded()
+{
+	grep -q "(loaded)" buffer_size_kb || return 1
+}
+
+assert_unloaded()
+{
+	grep -q "(unloaded)" buffer_size_kb || return 1
+}
+
+reload_remote()
+{
+	echo 0 > tracing_on
+	clear_trace
+	assert_unloaded
+	echo 1 > tracing_on
+	assert_loaded
+}
+
+dump_trace_pipe()
+{
+    output=$(mktemp $TMPDIR/remote_test.XXXXXX)
+    cat trace_pipe > $output &
+    pid=$!
+    sleep 1
+    kill -1 $pid
+
+    echo $output
+}
+
+check_trace()
+{
+	start_id="$1"
+	end_id="$2"
+	file="$3"
+
+	# Ensure the file is not empty
+	test -n "$(head $file)"
+
+	prev_ts=0
+	id=0
+
+	# Only keep <timestamp> <id>
+	tmp=$(mktemp $TMPDIR/remote_test.XXXXXX)
+	sed -e 's/\[[0-9]*\]\s*\([0-9]*.[0-9]*\): [a-z]* id=\([0-9]*\)/\1 \2/' $file > $tmp
+
+	while IFS= read -r line; do
+		ts=$(echo $line | cut -d ' ' -f 1)
+		id=$(echo $line | cut -d ' ' -f 2)
+
+		test $(echo "$ts>$prev_ts" | bc) -eq 1
+		test $id -eq $start_id
+
+		prev_ts=$ts
+		start_id=$((start_id + 1))
+	done < $tmp
+
+	test $id -eq $end_id
+	rm $tmp
+}
+
+get_cpu_ids()
+{
+    sed -n 's/^processor\s*:\s*\([0-9]\+\).*/\1/p' /proc/cpuinfo
+}
+
+get_page_size()
+{
+    sed -ne 's/^.*data.*size:\([0-9][0-9]*\).*/\1/p' events/header_page
+}
+
+get_selftest_event_size()
+{
+    sed -ne 's/^.*field:.*;.*size:\([0-9][0-9]*\);.*/\1/p' events/*/selftest/format | awk '{s+=$1} END {print s}'
+}