1 #!/bin/bash 2 # SPDX-License-Identifier: GPL-2.0 3 4 # protect against multiple inclusion 5 if [ $FILE_CPUFREQ ]; then 6 return 0 7 else 8 FILE_CPUFREQ=DONE 9 fi 10 11 source cpu.sh 12 13 14 # $1: cpu 15 cpu_should_have_cpufreq_directory() 16 { 17 if [ ! -d $CPUROOT/$1/cpufreq ]; then 18 printf "Warning: No cpufreq directory present for $1\n" 19 fi 20 } 21 22 cpu_should_not_have_cpufreq_directory() 23 { 24 if [ -d $CPUROOT/$1/cpufreq ]; then 25 printf "Warning: cpufreq directory present for $1\n" 26 fi 27 } 28 29 for_each_policy() 30 { 31 policies=$(ls $CPUFREQROOT| grep "policy[0-9].*") 32 for policy in $policies; do 33 $@ $policy 34 done 35 } 36 37 for_each_policy_concurrent() 38 { 39 policies=$(ls $CPUFREQROOT| grep "policy[0-9].*") 40 for policy in $policies; do 41 $@ $policy & 42 done 43 } 44 45 # $1: Path 46 read_cpufreq_files_in_dir() 47 { 48 local files=`ls $1` 49 50 printf "Printing directory: $1\n\n" 51 52 for file in $files; do 53 if [ -f $1/$file ]; then 54 printf "$file:" 55 cat $1/$file 56 else 57 printf "\n" 58 read_cpufreq_files_in_dir "$1/$file" 59 fi 60 done 61 printf "\n" 62 } 63 64 65 read_all_cpufreq_files() 66 { 67 printf "** Test: Running ${FUNCNAME[0]} **\n\n" 68 69 read_cpufreq_files_in_dir $CPUFREQROOT 70 71 printf "%s\n\n" "------------------------------------------------" 72 } 73 74 75 # UPDATE CPUFREQ FILES 76 77 # $1: directory path 78 update_cpufreq_files_in_dir() 79 { 80 local files=`ls $1` 81 82 printf "Updating directory: $1\n\n" 83 84 for file in $files; do 85 if [ -f $1/$file ]; then 86 # file is writable ? 87 local wfile=$(ls -l $1/$file | awk '$1 ~ /^.*w.*/ { print $NF; }') 88 89 if [ ! -z $wfile ]; then 90 # scaling_setspeed is a special file and we 91 # should skip updating it 92 if [ $file != "scaling_setspeed" ]; then 93 local val=$(cat $1/$file) 94 printf "Writing $val to: $file\n" 95 echo $val > $1/$file 96 fi 97 fi 98 else 99 printf "\n" 100 update_cpufreq_files_in_dir "$1/$file" 101 fi 102 done 103 104 printf "\n" 105 } 106 107 # Update all writable files with their existing values 108 update_all_cpufreq_files() 109 { 110 printf "** Test: Running ${FUNCNAME[0]} **\n\n" 111 112 update_cpufreq_files_in_dir $CPUFREQROOT 113 114 printf "%s\n\n" "------------------------------------------------" 115 } 116 117 118 # CHANGE CPU FREQUENCIES 119 120 # $1: policy 121 find_current_freq() 122 { 123 cat $CPUFREQROOT/$1/scaling_cur_freq 124 } 125 126 # $1: policy 127 # $2: frequency 128 set_cpu_frequency() 129 { 130 printf "Change frequency for $1 to $2\n" 131 echo $2 > $CPUFREQROOT/$1/scaling_setspeed 132 } 133 134 # $1: policy 135 test_all_frequencies() 136 { 137 local filepath="$CPUFREQROOT/$1" 138 139 backup_governor $1 140 141 local found=$(switch_governor $1 "userspace") 142 if [ $found = 1 ]; then 143 printf "${FUNCNAME[0]}: userspace governor not available for: $1\n" 144 return; 145 fi 146 147 printf "Switched governor for $1 to userspace\n\n" 148 149 local freqs=$(cat $filepath/scaling_available_frequencies) 150 printf "Available frequencies for $1: $freqs\n\n" 151 152 # Set all frequencies one-by-one 153 for freq in $freqs; do 154 set_cpu_frequency $1 $freq 155 done 156 157 printf "\n" 158 159 restore_governor $1 160 } 161 162 # $1: loop count 163 shuffle_frequency_for_all_cpus() 164 { 165 printf "** Test: Running ${FUNCNAME[0]} for $1 loops **\n\n" 166 167 for i in `seq 1 $1`; do 168 for_each_policy test_all_frequencies 169 done 170 printf "\n%s\n\n" "------------------------------------------------" 171 } 172 173 # Basic cpufreq tests 174 cpufreq_basic_tests() 175 { 176 printf "*** RUNNING CPUFREQ SANITY TESTS ***\n" 177 printf "====================================\n\n" 178 179 count=$(count_cpufreq_managed_cpus) 180 if [ $count = 0 ]; then 181 printf "No cpu is managed by cpufreq core, exiting\n" 182 exit; 183 else 184 printf "CPUFreq manages: $count CPUs\n\n" 185 fi 186 187 # Detect & print which CPUs are not managed by cpufreq 188 print_unmanaged_cpus 189 190 # read/update all cpufreq files 191 read_all_cpufreq_files 192 update_all_cpufreq_files 193 194 # hotplug cpus 195 reboot_cpus 5 196 197 # Test all frequencies 198 shuffle_frequency_for_all_cpus 2 199 200 # Test all governors 201 shuffle_governors_for_all_cpus 1 202 } 203 204 # Suspend/resume 205 # $1: "suspend" or "hibernate", $2: loop count 206 do_suspend() 207 { 208 printf "** Test: Running ${FUNCNAME[0]}: Trying $1 for $2 loops **\n\n" 209 210 # Is the directory available 211 if [ ! -d $SYSFS/power/ -o ! -f $SYSFS/power/state ]; then 212 printf "$SYSFS/power/state not available\n" 213 return 1 214 fi 215 216 if [ $1 = "suspend" ]; then 217 filename="mem" 218 elif [ $1 = "hibernate" ]; then 219 filename="disk" 220 else 221 printf "$1 is not a valid option\n" 222 return 1 223 fi 224 225 if [ -n $filename ]; then 226 present=$(cat $SYSFS/power/state | grep $filename) 227 228 if [ -z "$present" ]; then 229 printf "Tried to $1 but $filename isn't present in $SYSFS/power/state\n" 230 return 1; 231 fi 232 233 for i in `seq 1 $2`; do 234 printf "Starting $1\n" 235 echo $filename > $SYSFS/power/state 236 printf "Came out of $1\n" 237 238 printf "Do basic tests after finishing $1 to verify cpufreq state\n\n" 239 cpufreq_basic_tests 240 done 241 fi 242 } 243
