ADD set_hwp

dot_bin/executable_set_hwp

@@ -0,0 +1,50 @@
+#!/bin/sh
+
+# set the HWP preference for all cpus in sysfs
+
+cpus="/sys/devices/system/cpu/cpu*/cpufreq/energy_performance_preference"
+
+usage() {
+	script=${0##*/}
+	echo
+	echo "Invalid usage of ${script}!"
+    echo
+    echo "The following options are allowed"
+    echo
+	echo "-----------"
+	echo "$script -1 : default"
+	echo "$script 0  : power"
+	echo "$script 1  : balance_power"
+	echo "$script 2  : balance_performance"
+	echo "$script 3  : performance"
+	echo "-----------"
+	echo
+
+	exit 1
+}
+
+set_pref() {
+    for cpu in $cpus; do
+        echo "$1" > "$cpu"
+    done
+}
+
+case "$1" in
+  -1)
+    set_pref "default"
+    ;;
+  0)
+    set_pref "power"
+    ;;
+  1)
+    set_pref "balance_power"
+    ;;
+  2)
+    set_pref "balance_performance"
+    ;;
+  3)
+    set_pref "performance"
+    ;;
+  *)
+    usage "invalid argument"
+esac