#!/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" "------------------------------------------------"
|
}
|
