1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0-or-later 3# Copyright (c) 2021 Yang Xu <[email protected]> 4# Copyright (c) 2021 Petr Vorel <[email protected]> 5 6tconf() 7{ 8 echo "TCONF: $1" 9 exit 32 10} 11 12echo "Testing .request_hugepages = TST_NO_HUGEPAGES" 13 14orig_value=`cat /proc/sys/vm/nr_hugepages` 15 16if grep -q -E '^proc /proc(/sys)? proc ro' /proc/mounts; then 17 tconf "/proc or /proc/sys mounted as read-only" 18fi 19 20if [ ! -f /proc/sys/vm/nr_hugepages ]; then 21 tconf "/proc/sys/vm/nr_hugepages does not exist" 22fi 23 24if [ ! -w /proc/sys/vm/nr_hugepages ]; then 25 tconf "no write permission to /proc/sys/vm/nr_hugepages (run as root)" 26fi 27 28echo 4 > /proc/sys/vm/nr_hugepages 29 30./test_zero_hugepage 31 32echo $orig_value > /proc/sys/vm/nr_hugepages 33