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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 | #!/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" "------------------------------------------------" } |