Add support for speedshift (hardware p-states).

ansible/roles/cpu/files/cpu_set_perf_perc

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+#
+# Tell speedshift whether to maximize CPU performance (100) or energy
+# efficiency (0).
+set -euo pipefail
+IFS=$'\n\t'
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+perc=$1
+epp=$((100 - perc))
+
+sysctl -N dev.hwpstate_intel | grep -E 'dev.hwpstate_intel.[0-9]+.epp' | while read var; do
+    sysctl "$var=$epp"
+done

ansible/roles/cpu/files/percorespeedshift_loader.conf

@@ -0,0 +1,2 @@
+# Control each core individually
+machdep.hwpstate_pkg_ctrl=0