xref: /linux/tools/testing/selftests/ftrace/test.d/remotes/functions (revision 0fc8f6200d2313278fbf4539bbab74677c685531)

# 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}'
}