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 tst_kvercmp 3 18 0 34 if [ $? -eq 0 ]; then 35 tst_brkm TCONF "Test must be run with kernel 3.18.0 or newer" 36 fi 37 38 local cpu_num=$(getconf _NPROCESSORS_ONLN) 39 if [ $cpu_num -lt 2 ]; then 40 tst_brkm TCONF "We need 2 cpus at least to have test" 41 fi 42 43 tst_tmpdir 44 45 TST_CLEANUP=cleanup 46 47 # We need to mount cpuset if it is not found. 48 mount_flag=0 49 grep -w cpuset /proc/mounts > tmpfile 50 if [ $? -eq 0 ]; then 51 root_cpuset_dir=$(cat tmpfile | awk '{print $2}') 52 else 53 root_cpuset_dir="cpuset_test" 54 55 ROD_SILENT mkdir -p ${root_cpuset_dir} 56 57 ROD_SILENT mount -t cpuset cpuset ${root_cpuset_dir} 58 59 mount_flag=1 60 fi 61 62 if [ -f ${root_cpuset_dir}/cpuset.cpu_exclusive ]; then 63 cpu_exclusive=cpuset.cpu_exclusive 64 cpus=cpuset.cpus 65 elif [ -f ${root_cpuset_dir}/cpu_exclusive ]; then 66 cpu_exclusive=cpu_exclusive 67 cpus=cpus 68 else 69 tst_brkm TBROK "Both cpuset.cpu_exclusive and cpu_exclusive" \ 70 "do not exist." 71 fi 72 73 cpu_exclusive_value=$(cat ${root_cpuset_dir}/${cpu_exclusive}) 74 if [ "${cpu_exclusive_value}" != "1" ];then 75 echo 1 > ${root_cpuset_dir}/${cpu_exclusive} 76 if [ $? -ne 0 ]; then 77 tst_brkm TBROK "'echo 1 >" \ 78 "${root_cpuset_dir}/${cpu_exclusive}'" \ 79 "failed" 80 fi 81 fi 82 } 83 84 cleanup() 85 { 86 if [ -d "${root_cpuset_dir}/testdir" ]; then 87 rmdir ${root_cpuset_dir}/testdir 88 fi 89 90 if [ -n ${cpu_exclusive_value} -a ${cpu_exclusive_value} -ne 1 ]; then 91 # Need to flush, or may be output: 92 # "write error: Device or resource busy" 93 sync 94 95 echo ${cpu_exclusive_value} > \ 96 ${root_cpuset_dir}/${cpu_exclusive} 97 fi 98 99 if [ "${mount_flag}" == "1" ]; then 100 umount ${root_cpuset_dir} 101 if [ $? -ne 0 ]; then 102 tst_resm TWARN "'umount ${root_cpuset_dir}' failed" 103 fi 104 105 if [ -d "${root_cpuset_dir}" ]; then 106 rmdir ${root_cpuset_dir} 107 fi 108 fi 109 110 tst_rmdir 111 } 112 113 cpuset_test() 114 { 115 ROD_SILENT mkdir ${root_cpuset_dir}/testdir 116 117 # Creat an exclusive cpuset. 118 echo 1 > ${root_cpuset_dir}/testdir/${cpu_exclusive} 119 if [ $? -ne 0 ]; then 120 tst_brkm TFAIL "'echo 1 >" \ 121 "${root_cpuset_dir}/testdir/${cpu_exclusive}'" \ 122 "failed" 123 fi 124 125 local cpu_exclusive_tmp=$(cat \ 126 ${root_cpuset_dir}/testdir/${cpu_exclusive}) 127 if [ "${cpu_exclusive_tmp}" != "1" ]; then 128 tst_brkm TFAIL "${cpu_exclusive} is '${cpu_exclusive_tmp}'," \ 129 "expected '1'" 130 fi 131 132 # ${cpus} is empty at the begin, that maybe make the system *crash*. 133 echo 0-1 > ${root_cpuset_dir}/testdir/${cpus} 134 if [ $? -ne 0 ]; then 135 tst_brkm TFAIL "'echo 0-1 >" \ 136 "${root_cpuset_dir}/testdir/${cpus}' failed" 137 fi 138 139 local cpus_value=$(cat ${root_cpuset_dir}/testdir/${cpus}) 140 if [ "${cpus_value}" != "0-1" ]; then 141 tst_brkm TFAIL "${cpus} is '${cpus_value}', expected '0-1'" 142 fi 143 144 tst_resm TPASS "Bug is not reproduced" 145 } 146 147 setup 148 149 cpuset_test 150 151 tst_exit 152
