File Content: governor.sh #!/bin/bash # SPDX-License-Identifier: GPL-2.0 # # Test governors # protect against multiple inclusion if [ $FILE_GOVERNOR ]; then return 0 else FILE_GOVERNOR=DONE fi source cpu.sh source cpufreq.sh CUR_GOV= CUR_FREQ= # Find governor's directory path # $1: policy, $2: governor find_gov_directory() { if [ -d $CPUFREQROOT/$2 ]; then printf "$CPUFREQROOT/$2\n" elif [ -d $CPUFREQROOT/$1/$2 ]; then printf "$CPUFREQROOT/$1/$2\n" else printf "INVALID\n" fi } # $1: policy find_current_governor() { cat $CPUFREQROOT/$1/scaling_governor } # $1: policy backup_governor() { CUR_GOV=$(find_current_governor $1) printf "Governor backup done for $1: $CUR_GOV\n" if [ $CUR_GOV == "userspace" ]; then CUR_FREQ=$(find_current_freq $1) printf "Governor frequency backup done for $1: $CUR_FREQ\n" fi printf "\n" } # $1: policy restore_governor() { __switch_governor $1 $CUR_GOV printf "Governor restored for $1 to $CUR_GOV\n" if [ $CUR_GOV == "userspace" ]; then set_cpu_frequency $1 $CUR_FREQ printf "Governor frequency restored for $1: $CUR_FREQ\n" fi printf "\n" } # param: # $1: policy, $2: governor __switch_governor() { echo $2 > $CPUFREQROOT/$1/scaling_governor } # param: # $1: cpu, $2: governor __switch_governor_for_cpu() { echo $2 > $CPUROOT/$1/cpufreq/scaling_governor } # SWITCH GOVERNORS # $1: cpu, $2: governor switch_governor() { local filepath=$CPUFREQROOT/$1/scaling_available_governors # check if governor is available local found=$(cat $filepath | grep $2 | wc -l) if [ $found = 0 ]; then echo 1; return fi __switch_governor $1 $2 echo 0; } # $1: policy, $2: governor switch_show_governor() { cur_gov=find_current_governor if [ $cur_gov == "userspace" ]; then cur_freq=find_current_freq fi # switch governor __switch_governor $1 $2 printf "\nSwitched governor for $1 to $2\n\n" if [ $2 == "userspace" -o $2 == "powersave" -o $2 == "performance" ]; then printf "No files to read for $2 governor\n\n" return fi # show governor files local govpath=$(find_gov_directory $1 $2) read_cpufreq_files_in_dir $govpath } # $1: function to be called, $2: policy call_for_each_governor() { local filepath=$CPUFREQROOT/$2/scaling_available_governors # Exit if cpu isn't managed by cpufreq core if [ ! -f $filepath ]; then return; fi backup_governor $2 local governors=$(cat $filepath) printf "Available governors for $2: $governors\n" for governor in $governors; do $1 $2 $governor done restore_governor $2 } # $1: loop count shuffle_governors_for_all_cpus() { printf "** Test: Running ${FUNCNAME[0]} for $1 loops **\n\n" for i in `seq 1 $1`; do for_each_policy call_for_each_governor switch_show_governor done printf "%s\n\n" "------------------------------------------------" } Submit