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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# protect against multiple inclusion
if [ $FILE_CPUFREQ ]; then
return 0
else
FILE_CPUFREQ=DONE
fi
source cpu.sh
# $1: cpu
cpu_should_have_cpufreq_directory()
{
if [ ! -d $CPUROOT/$1/cpufreq ]; then
printf "Warning: No cpufreq directory present for $1\n"
fi
}
cpu_should_not_have_cpufreq_directory()
{
if [ -d $CPUROOT/$1/cpufreq ]; then
printf "Warning: cpufreq directory present for $1\n"
fi
}
for_each_policy()
{
policies=$(ls $CPUFREQROOT| grep "policy[0-9].*")
for policy in $policies; do
$@ $policy
done
}
for_each_policy_concurrent()
{
policies=$(ls $CPUFREQROOT| grep "policy[0-9].*")
for policy in $policies; do
$@ $policy &
done
}
# $1: Path
read_cpufreq_files_in_dir()
{
local files=`ls $1`
printf "Printing directory: $1\n\n"
for file in $files; do
if [ -f $1/$file ]; then
printf "$file:"
cat $1/$file
else
printf "\n"
read_cpufreq_files_in_dir "$1/$file"
fi
done
printf "\n"
}
read_all_cpufreq_files()
{
printf "** Test: Running ${FUNCNAME[0]} **\n\n"
read_cpufreq_files_in_dir $CPUFREQROOT
printf "%s\n\n" "------------------------------------------------"
}
# UPDATE CPUFREQ FILES
# $1: directory path
update_cpufreq_files_in_dir()
{
local files=`ls $1`
printf "Updating directory: $1\n\n"
for file in $files; do
if [ -f $1/$file ]; then
# file is writable ?
local wfile=$(ls -l $1/$file | awk '$1 ~ /^.*w.*/ { print $NF; }')
if [ ! -z $wfile ]; then
# scaling_setspeed is a special file and we
# should skip updating it
if [ $file != "scaling_setspeed" ]; then
local val=$(cat $1/$file)
printf "Writing $val to: $file\n"
echo $val > $1/$file
fi
fi
else
printf "\n"
update_cpufreq_files_in_dir "$1/$file"
fi
done
printf "\n"
}
# Update all writable files with their existing values
update_all_cpufreq_files()
{
printf "** Test: Running ${FUNCNAME[0]} **\n\n"
update_cpufreq_files_in_dir $CPUFREQROOT
printf "%s\n\n" "------------------------------------------------"
}
# CHANGE CPU FREQUENCIES
# $1: policy
find_current_freq()
{
cat $CPUFREQROOT/$1/scaling_cur_freq
}
# $1: policy
# $2: frequency
set_cpu_frequency()
{
printf "Change frequency for $1 to $2\n"
echo $2 > $CPUFREQROOT/$1/scaling_setspeed
}
# $1: policy
test_all_frequencies()
{
local filepath="$CPUFREQROOT/$1"
backup_governor $1
local found=$(switch_governor $1 "userspace")
if [ $found = 1 ]; then
printf "${FUNCNAME[0]}: userspace governor not available for: $1\n"
return;
fi
printf "Switched governor for $1 to userspace\n\n"
local freqs=$(cat $filepath/scaling_available_frequencies)
printf "Available frequencies for $1: $freqs\n\n"
# Set all frequencies one-by-one
for freq in $freqs; do
set_cpu_frequency $1 $freq
done
printf "\n"
restore_governor $1
}
# $1: loop count
shuffle_frequency_for_all_cpus()
{
printf "** Test: Running ${FUNCNAME[0]} for $1 loops **\n\n"
for i in `seq 1 $1`; do
for_each_policy test_all_frequencies
done
printf "\n%s\n\n" "------------------------------------------------"
}
# Basic cpufreq tests
cpufreq_basic_tests()
{
printf "*** RUNNING CPUFREQ SANITY TESTS ***\n"
printf "====================================\n\n"
count=$(count_cpufreq_managed_cpus)
if [ $count = 0 ]; then
printf "No cpu is managed by cpufreq core, exiting\n"
exit;
else
printf "CPUFreq manages: $count CPUs\n\n"
fi
# Detect & print which CPUs are not managed by cpufreq
print_unmanaged_cpus
# read/update all cpufreq files
read_all_cpufreq_files
update_all_cpufreq_files
# hotplug cpus
reboot_cpus 5
# Test all frequencies
shuffle_frequency_for_all_cpus 2
# Test all governors
shuffle_governors_for_all_cpus 1
}
# Suspend/resume
# $1: "suspend" or "hibernate", $2: loop count
do_suspend()
{
printf "** Test: Running ${FUNCNAME[0]}: Trying $1 for $2 loops **\n\n"
# Is the directory available
if [ ! -d $SYSFS/power/ -o ! -f $SYSFS/power/state ]; then
printf "$SYSFS/power/state not available\n"
return 1
fi
if [ $1 = "suspend" ]; then
filename="mem"
elif [ $1 = "hibernate" ]; then
filename="disk"
else
printf "$1 is not a valid option\n"
return 1
fi
if [ -n $filename ]; then
present=$(cat $SYSFS/power/state | grep $filename)
if [ -z "$present" ]; then
printf "Tried to $1 but $filename isn't present in $SYSFS/power/state\n"
return 1;
fi
for i in `seq 1 $2`; do
printf "Starting $1\n"
echo $filename > $SYSFS/power/state
printf "Came out of $1\n"
printf "Do basic tests after finishing $1 to verify cpufreq state\n\n"
cpufreq_basic_tests
done
fi
}