1 #! /bin/sh 2 # 3 # Copyright (c) International Business Machines Corp., 2001 4 # Author: Nageswara R Sastry <nasastry (at] in.ibm.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, but 12 # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 13 # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 # 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 Foundation, 18 # Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 # 20 21 export TCID="Power_Management03" 22 export TST_TOTAL=4 23 24 . test.sh 25 . pm_include.sh 26 27 check_cpufreq_sysfs_files() { 28 total_cpus=$(tst_ncpus) 29 (( total_cpus-=1 )) 30 RC=0 31 32 for cpu in $(seq 0 "${total_cpus}" ) 33 do 34 cpufiles=$(find /sys/devices/system/cpu/cpu"${cpu}"/cpufreq/ \ 35 -name "*" -type f -perm /400) 36 for files in ${cpufiles} 37 do 38 cat ${files} >/dev/null 2>&1 39 if [ $? -ne 0 ] ; then 40 echo "${0}: FAIL: cat ${files}" 41 RC=1 42 fi 43 done 44 done 45 if [ ${RC} -eq 0 ] ; then 46 echo "${0}: PASS: Checking cpu freq sysfs files" 47 fi 48 return $RC 49 } 50 51 change_govr() { 52 available_govr=$(get_supporting_govr) 53 54 total_cpus=$(tst_ncpus) 55 (( total_cpus-=1 )) 56 RC=0 57 58 for cpu in $(seq 0 "${total_cpus}" ) 59 do 60 for govr in ${available_govr} 61 do 62 echo ${govr} > \ 63 /sys/devices/system/cpu/cpu${cpu}/cpufreq/scaling_governor 64 if [ "$?" -ne "0" ] ; then 65 echo "${0}: FAIL: Unable to set" \ 66 "governor -- ${govr} for cpu${cpu}" 67 RC=1 68 fi 69 done 70 done 71 if [ ${RC} -eq 0 ] ; then 72 echo "${0}: PASS: Changing cpu governors" 73 fi 74 return $RC 75 } 76 77 change_freq() { 78 available_freq=$(get_supporting_freq) 79 available_govr=$(get_supporting_govr) 80 RC=0 81 82 total_cpus=$(tst_ncpus) 83 (( total_cpus-=1 )) 84 85 if ( echo ${available_govr} | grep -i "userspace" \ 86 >/dev/null 2>&1 ); then 87 for cpu in $(seq 0 "${total_cpus}" ) 88 do 89 echo userspace > \ 90 /sys/devices/system/cpu/cpu${cpu}/cpufreq/scaling_governor 91 if [ $? -ne 0 ] ; then 92 RC=1 93 fi 94 done 95 if [ ${RC} -ne 1 ] ; then 96 for cpu in $(seq 0 "${total_cpus}" ) 97 do 98 for freq in ${available_freq} 99 do 100 echo ${freq} > \ 101 /sys/devices/system/cpu/cpu${cpu}/cpufreq/scaling_setspeed 102 if [ "$?" -ne "0" ] ; then 103 echo "${0}: FAIL: Unable" \ 104 "to set frequency -- ${freq} for cpu${cpu}" 105 RC=1 106 fi 107 done 108 done 109 fi 110 fi 111 if [ ${RC} -eq 0 ] ; then 112 echo "${0}: PASS: Changing cpu frequencies" 113 fi 114 return $RC 115 } 116 117 pwkm_load_unload() { 118 RC=0 119 loaded_governor=`cat \ 120 /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor` 121 for module in `modprobe -l | grep cpufreq_ | \ 122 cut -f8 -d"/" | cut -f1 -d"."` 123 do 124 #echo -n "Loading $module ... " 125 if [ $module != "cpufreq_$loaded_governor" ]; then 126 modprobe $module >/dev/null 127 if [ $? -ne 0 ] ; then 128 echo "${0}: FAIL: Loading of module $module" \ 129 "or check whether you compiled as module or not" 130 RC=1 131 fi 132 fi 133 done 134 for module in `modprobe -l | grep cpufreq_ | \ 135 cut -f8 -d"/" | cut -f1 -d"."` 136 do 137 #echo -n "Unloading $module ... " 138 if [ $module != "cpufreq_$loaded_governor" ]; then 139 modprobe -r $module >/dev/null 140 if [ $? -ne 0 ] ; then 141 echo "${0}: FAIL: Loading of module $module" \ 142 "or check whether you compiled as module or not" 143 RC=1 144 fi 145 fi 146 done 147 return $RC 148 } 149 150 # Checking test environment 151 check_kervel_arch 152 153 # Checking cpufreq sysfs interface files 154 if [ ! -d /sys/devices/system/cpu/cpu0/cpufreq ] ; then 155 tst_brkm TCONF "Required kernel configuration for CPU_FREQ NOT set" 156 fi 157 158 if check_cpufreq_sysfs_files ; then 159 tst_resm TPASS "CPUFREQ sysfs tests" 160 else 161 tst_resm TFAIL "CPUFREQ sysfs tests" 162 fi 163 164 # Changing governors 165 if change_govr ; then 166 tst_resm TPASS "Changing governors" 167 else 168 tst_resm TFAIL "Changing governors" 169 fi 170 171 # Changing frequencies 172 if change_freq ; then 173 tst_resm TPASS "Changing frequncies" 174 else 175 tst_resm TFAIL "Changing frequncies" 176 fi 177 178 # Loading and Unloading governor related kernel modules 179 if pwkm_load_unload ; then 180 tst_resm TPASS "Loading and Unloading of governor kernel" \ 181 "modules" 182 else 183 tst_resm TFAIL "Loading and Unloading of governor kernel" \ 184 "modules got failed" 185 fi 186 187 tst_exit 188
