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-rwxr-xr-xtools/testing/selftests/cpufreq/cpufreq.sh242
1 files changed, 242 insertions, 0 deletions
diff --git a/tools/testing/selftests/cpufreq/cpufreq.sh b/tools/testing/selftests/cpufreq/cpufreq.sh
new file mode 100755
index 000000000..b583a2fb4
--- /dev/null
+++ b/tools/testing/selftests/cpufreq/cpufreq.sh
@@ -0,0 +1,242 @@
+#!/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
+}