1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3
4set -e
5set -o pipefail
6
7# To debug, uncomment the following line
8# set -x
9
10# Test whether the compile option -mprofile-kernel exists and generates
11# profiling code (ie. a call to _mcount()).
12echo "int func() { return 0; }" | \
13    $* -S -x c -O2 -p -mprofile-kernel - -o - 2> /dev/null | \
14    grep -q "_mcount"
15
16# Test whether the notrace attribute correctly suppresses calls to _mcount().
17
18echo -e "#include <linux/compiler.h>\nnotrace int func() { return 0; }" | \
19    $* -S -x c -O2 -p -mprofile-kernel - -o - 2> /dev/null | \
20    grep -q "_mcount" && \
21    exit 1
22
23echo "OK"
24exit 0
25