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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/testing/selftests/cpufreq/governor.sh | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/cpufreq/governor.sh')
-rwxr-xr-x | tools/testing/selftests/cpufreq/governor.sh | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/tools/testing/selftests/cpufreq/governor.sh b/tools/testing/selftests/cpufreq/governor.sh new file mode 100755 index 000000000..fe37df79c --- /dev/null +++ b/tools/testing/selftests/cpufreq/governor.sh @@ -0,0 +1,154 @@ +#!/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" "------------------------------------------------" +} |