Initial import

1 files changed, 80 insertions, 0 deletions

diff --git a/phc-k8.sh b/phc-k8.sh
new file mode 100644
index 000000000000..734c76c5f92e
--- /dev/null
+++ b/phc-k8.sh
@@ -0,0 +1,80 @@
+#!/bin/bash -e
+shopt -s nullglob
+
+case "$1" in
+start)
+	. /etc/default/phc-k8
+	if [ -z "$VIDS" ]; then
+		echo '=> Please edit /etc/default/phc-k8'
+		exit 1
+	fi
+	echo ':: Setting PHC VIDs'
+	for i in /sys/devices/system/cpu/cpu*/cpufreq/phc_vids; do
+		echo $VIDS > "$i"
+	done
+	;;
+stop)
+	echo ':: Resetting default PHC VIDs'
+	for i in /sys/devices/system/cpu/cpu*/cpufreq; do
+		[ -e "$i/phc_default_vids" -a -e "$i/phc_vids" ] && cp "$i"/phc_{default_,}vids
+	done
+	;;
+status)
+	check_off () {
+		for i in /sys/devices/system/cpu/cpu*/cpufreq; do
+			[ "$(< $i/phc_vids)" = "$(< $i/phc_default_vids)" ] || return;
+		done
+	}
+	check_on () {
+		for i in /sys/devices/system/cpu/cpu*/cpufreq/phc_vids; do
+			[[ "$(< $i)" =~ "$VIDS" ]] || return;
+		done
+	}
+	echo -n 'PHC status: '
+	. /etc/default/phc-k8
+	if check_off; then
+		echo 'inactive'
+	elif check_on; then
+		echo 'active'
+	else
+		echo 'unknown'
+	fi
+	;;
+setup)
+	echo ':: Removing old phc-k8 modules'
+	echo
+	for i in /usr/lib/modules/*; do
+		if [ -f "$i/phc-k8.ko" -a ! -f "$i/version" ]; then
+			rm -f "$i"/{mperf,phc-k8}.ko
+			rmdir --ignore-fail-on-non-empty "$i"
+		elif [ -d "$i/updates/kernel/arch/x86/kernel/cpu/cpufreq" -a ! -d "$i/kernel" ]; then
+			rm -f "$i"/updates/kernel/arch/x86/kernel/cpu/cpufreq/{mperf,phc-k8}.ko
+			rmdir -p --ignore-fail-on-non-empty "$i/updates/kernel/arch/x86/kernel/cpu/cpufreq"
+		fi
+	done
+	echo ':: Compiling new phc-k8 module'
+	echo
+	cd /usr/src/phc-k8/
+	make
+	echo
+	echo ':: Installing new phc-k8 module'
+	echo
+	make install
+	echo
+	echo ':: Cleaning up'
+	echo
+	make clean
+	;;
+set)
+	. /etc/default/phc-k8
+	[ -z "$VIDS" ] && exit
+	for i in $(< /proc/cmdline); do
+		[ $i = nophc ] && exit
+	done
+	for i in /sys/devices/system/cpu/cpu*/cpufreq/phc_vids; do
+		echo $VIDS > "$i"
+	done
+	;;
+*)
+	echo "usage: $0 {start|stop|status|setup|set}"
+esac