ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/tools/testing/selftests/cpufreq/governor.sh b/marvell/linux/tools/testing/selftests/cpufreq/governor.sh
new file mode 100755
index 0000000..fe37df7
--- /dev/null
+++ b/marvell/linux/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" "------------------------------------------------"
+}