1b71c9ffbSNicholas Piggin#!/bin/bash 2b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0 3b71c9ffbSNicholas Piggin 4b71c9ffbSNicholas Pigginset -e 5b71c9ffbSNicholas Pigginset -o pipefail 6b71c9ffbSNicholas Piggin 7b71c9ffbSNicholas Piggin# To debug, uncomment the following line 8b71c9ffbSNicholas Piggin# set -x 9b71c9ffbSNicholas Piggin 101421dc6dSNicholas Piggin# -mprofile-kernel is only supported on 64le, so this should not be invoked 111421dc6dSNicholas Piggin# for other targets. Therefore we can pass in -m64 and -mlittle-endian 121421dc6dSNicholas Piggin# explicitly, to take care of toolchains defaulting to other targets. 131421dc6dSNicholas Piggin 14b71c9ffbSNicholas Piggin# Test whether the compile option -mprofile-kernel exists and generates 15b71c9ffbSNicholas Piggin# profiling code (ie. a call to _mcount()). 16b71c9ffbSNicholas Pigginecho "int func() { return 0; }" | \ 171421dc6dSNicholas Piggin $* -m64 -mlittle-endian -S -x c -O2 -p -mprofile-kernel - -o - \ 181421dc6dSNicholas Piggin 2> /dev/null | grep -q "_mcount" 19b71c9ffbSNicholas Piggin 20b71c9ffbSNicholas Piggin# Test whether the notrace attribute correctly suppresses calls to _mcount(). 21b71c9ffbSNicholas Piggin 22b71c9ffbSNicholas Pigginecho -e "#include <linux/compiler.h>\nnotrace int func() { return 0; }" | \ 231421dc6dSNicholas Piggin $* -m64 -mlittle-endian -S -x c -O2 -p -mprofile-kernel - -o - \ 241421dc6dSNicholas Piggin 2> /dev/null | grep -q "_mcount" && \ 25b71c9ffbSNicholas Piggin exit 1 26b71c9ffbSNicholas Piggin 27b71c9ffbSNicholas Pigginecho "OK" 28b71c9ffbSNicholas Pigginexit 0 29