1 #!/bin/sh 2 # 3 # Copyright (c) 2015 Fujitsu Ltd. 4 # Author: Zeng Linggang <zenglg.jy (at] cn.fujitsu.com> 5 # 6 # This program is free software; you can redistribute it and/or modify 7 # it under the terms of the GNU General Public License as published by 8 # the Free Software Foundation; either version 2 of the License, or 9 # (at your option) any later version. 10 # 11 # This program is distributed in the hope that it will be useful, 12 # but WITHOUT ANY WARRANTY; without even the implied warranty of 13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 # GNU General Public License for more details. 15 # 16 # You should have received a copy of the GNU General Public License 17 # along with this program; if not, write to the Free Software 18 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 19 # 20 # This is a regression test for commit: 21 # http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ 22 # ?id=bb2bc55 23 # 24 25 TCID=cpuset_regression_test 26 TST_TOTAL=1 27 . test.sh 28 29 setup() 30 { 31 tst_require_root 32 33 if tst_kvcmp -lt "3.18"; then 34 tst_brkm TCONF "Test must be run with kernel 3.18.0 or newer" 35 fi 36 37 local cpu_num=$(getconf _NPROCESSORS_ONLN) 38 if [ $cpu_num -lt 2 ]; then 39 tst_brkm TCONF "We need 2 cpus at least to have test" 40 fi 41 42 tst_tmpdir 43 44 TST_CLEANUP=cleanup 45 46 # We need to mount cpuset if it is not found. 47 mount_flag=0 48 grep -w cpuset /proc/mounts > tmpfile 49 if [ $? -eq 0 ]; then 50 root_cpuset_dir=$(cat tmpfile | awk '{print $2}') 51 else 52 root_cpuset_dir="cpuset_test" 53 54 ROD_SILENT mkdir -p ${root_cpuset_dir} 55 56 ROD_SILENT mount -t cpuset cpuset ${root_cpuset_dir} 57 58 mount_flag=1 59 fi 60 61 if [ -f ${root_cpuset_dir}/cpuset.cpu_exclusive ]; then 62 cpu_exclusive=cpuset.cpu_exclusive 63 cpus=cpuset.cpus 64 elif [ -f ${root_cpuset_dir}/cpu_exclusive ]; then 65 cpu_exclusive=cpu_exclusive 66 cpus=cpus 67 else 68 tst_brkm TBROK "Both cpuset.cpu_exclusive and cpu_exclusive" \ 69 "do not exist." 70 fi 71 72 cpu_exclusive_value=$(cat ${root_cpuset_dir}/${cpu_exclusive}) 73 if [ "${cpu_exclusive_value}" != "1" ];then 74 echo 1 > ${root_cpuset_dir}/${cpu_exclusive} 75 if [ $? -ne 0 ]; then 76 tst_brkm TBROK "'echo 1 >" \ 77 "${root_cpuset_dir}/${cpu_exclusive}'" \ 78 "failed" 79 fi 80 fi 81 } 82 83 cleanup() 84 { 85 if [ -d "${root_cpuset_dir}/testdir" ]; then 86 rmdir ${root_cpuset_dir}/testdir 87 fi 88 89 if [ -n ${cpu_exclusive_value} -a ${cpu_exclusive_value} -ne 1 ]; then 90 # Need to flush, or may be output: 91 # "write error: Device or resource busy" 92 sync 93 94 echo ${cpu_exclusive_value} > \ 95 ${root_cpuset_dir}/${cpu_exclusive} 96 fi 97 98 if [ "${mount_flag}" = "1" ]; then 99 umount ${root_cpuset_dir} 100 if [ $? -ne 0 ]; then 101 tst_resm TWARN "'umount ${root_cpuset_dir}' failed" 102 fi 103 104 if [ -d "${root_cpuset_dir}" ]; then 105 rmdir ${root_cpuset_dir} 106 fi 107 fi 108 109 tst_rmdir 110 } 111 112 cpuset_test() 113 { 114 ROD_SILENT mkdir ${root_cpuset_dir}/testdir 115 116 # Creat an exclusive cpuset. 117 echo 1 > ${root_cpuset_dir}/testdir/${cpu_exclusive} 118 if [ $? -ne 0 ]; then 119 tst_brkm TFAIL "'echo 1 >" \ 120 "${root_cpuset_dir}/testdir/${cpu_exclusive}'" \ 121 "failed" 122 fi 123 124 local cpu_exclusive_tmp=$(cat \ 125 ${root_cpuset_dir}/testdir/${cpu_exclusive}) 126 if [ "${cpu_exclusive_tmp}" != "1" ]; then 127 tst_brkm TFAIL "${cpu_exclusive} is '${cpu_exclusive_tmp}'," \ 128 "expected '1'" 129 fi 130 131 # ${cpus} is empty at the begin, that maybe make the system *crash*. 132 echo 0-1 > ${root_cpuset_dir}/testdir/${cpus} 133 if [ $? -ne 0 ]; then 134 tst_brkm TFAIL "'echo 0-1 >" \ 135 "${root_cpuset_dir}/testdir/${cpus}' failed" 136 fi 137 138 local cpus_value=$(cat ${root_cpuset_dir}/testdir/${cpus}) 139 if [ "${cpus_value}" != "0-1" ]; then 140 tst_brkm TFAIL "${cpus} is '${cpus_value}', expected '0-1'" 141 fi 142 143 tst_resm TPASS "Bug is not reproduced" 144 } 145 146 setup 147 148 cpuset_test 149 150 tst_exit 151
