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|
#!/bin/bash
###########################################################################
# #
# Powersave Daemon #
# #
# Copyright (C) 2004,2005 SUSE Linux Products GmbH #
# #
# This program is free software; you can redistribute it and/or modify it #
# under the terms of the GNU General Public License as published by the #
# Free Software Foundation; either version 2 of the License, or (at you #
# option) any later version. #
# #
# This program is distributed in the hope that it will be useful, but #
# WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU #
# General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License along #
# with this program; if not, write to the Free Software Foundation, Inc., #
# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA #
# #
# #
# Author: Thomas Renninger <trenn@suse.de, mail@renninger.de> #
# #
###########################################################################
#
# /etc/init.d/powersave
# and its symbolic link
# /usr/sbin/rcpowersave
#
# LSB compliant service control script; see http://www.linuxbase.org/spec/
#
# Should start contains acpid apmd and cpufreqd, so that I can check
# whether they are running and whether this script should fail
# apmd and cpufreqd should never run together with this service
### BEGIN INIT INFO
# Provides: powersaved
# Required-Start: $remote_fs dbus haldaemon
# Should-Start: $syslog acpid
# X-UnitedLinux-Should-Start: $syslog acpid dbus haldaemon
# Required-Stop: $remote_fs dbus haldaemon
# Should-Stop: $syslog acpid
# X-UnitedLinux-Should-Stop: $syslog dbus haldaemon acpid
# Default-Start: 2 3 5
# Default-Stop: 0 1 6
# Short-Description: optimises power consumption, specially for laptops
# Description: supports acpi apm and cpufrequency scaling
# detects HW support for mentioned systems and optimises power consumption
# accordingly.
# Back-end to the YaST2 power management configuration module
# Additionally this start script loads all needed modules
# for cpufrequency scaling and acpi support
### END INIT INFO
# Check for missing binaries (stale symlinks should not happen)
powersaved_BIN=/usr/sbin/powersaved
powersave_BIN=@bindir@/powersave
ACPID_BIN=/sbin/acpid
S2RAM_BIN=/usr/sbin/s2ram
# this is the default set of acpi modules loaded if nothing is configured
DEFAULT_ACPI_MODULES="ac battery button fan processor thermal"
test -x $powersaved_BIN || exit 5
# Check for existence of needed config file and read it
CONFIG=@configdir@
# create symlink to /etc where powersave expects configuration files.
# this is an evil hack and is only needed when updating from powersave
# version 0.10.20 but does not hurt
ln -ns /etc/sysconfig/powersave $CONFIG >/dev/null 2>&1
test -r $CONFIG || exit 6
. $CONFIG/common
. $CONFIG/cpufreq
. $CONFIG/thermal
if test -e /etc/sysconfig/security; then
. /etc/sysconfig/security
fi
LOGGER="/bin/logger -t rcpowersaved"
# Shell functions sourced from /etc/rc.status:
# rc_check check and set local and overall rc status
# rc_status check and set local and overall rc status
# rc_status -v ditto but be verbose in local rc status
# rc_status -v -r ditto and clear the local rc status
# rc_status -s display "skipped" and exit with status 3
# rc_status -u display "unused" and exit with status 3
# rc_failed set local and overall rc status to failed
# rc_failed <num> set local and overall rc status to <num>
# rc_reset clear local rc status (overall remains)
# rc_exit exit appropriate to overall rc status
# rc_active checks whether a service is activated by symlinks
# rc_splash arg sets the boot splash screen to arg (if active)
. /etc/rc.status
# Reset status of this service
rc_reset
# Return values acc. to LSB for all commands but status:
# 0 - success
# 1 - generic or unspecified error
# 2 - invalid or excess argument(s)
# 3 - unimplemented feature (e.g. "reload")
# 4 - user had insufficient privileges
# 5 - program is not installed
# 6 - program is not configured
# 7 - program is not running
# 8--199 - reserved (8--99 LSB, 100--149 distrib, 150--199 appl)
#
# Note that starting an already running service, stopping
# or restarting a not-running service as well as the restart
# with force-reload (in case signaling is not supported) are
# considered a success.
OPTS=""
SYSFS_PATH="/sys/devices/system/cpu/cpu0/cpufreq"
function load_governors()
{
if [ ! -r $SYSFS_PATH ];then
$LOGGER Cannot load cpufreq governors - No cpufreq driver available
return 1
fi
read govs < $SYSFS_PATH/scaling_available_governors
case "$govs" in
*powersave*)
;;
*)
modprobe -q cpufreq_powersave >/dev/null 2>&1
[ $? != 0 ] && $LOGGER powersave cpufreq governor could not be loaded
;;
esac
case "$govs" in
*performance*)
;;
*)
modprobe -q cpufreq_performance >/dev/null 2>&1
[ $? != 0 ] && $LOGGER perfromance cpufreq governor could not be loaded
;;
esac
case "$govs" in
*userspace*)
;;
*)
modprobe -q cpufreq_userspace >/dev/null 2>&1
[ $? != 0 ] && $LOGGER userspace cpufreq governor could not be loaded
;;
esac
case "$govs" in
*ondemand*)
;;
*)
modprobe -q cpufreq_ondemand >/dev/null 2>&1
[ $? != 0 ] && $LOGGER ondemand cpufreq governor could not be loaded
;;
esac
return 0
}
case "$1" in
start)
echo -n "Starting powersaved: "
if [ "$POWERSAVED" = "off" -o "$POWERSAVE" = "off" ]; then
echo -n "not starting (POWERSAVED=off)"
$LOGGER "powersaved disabled due to POWERSAVED=off"
rc_status -s
rc_exit
fi
checkproc $powersaved_BIN
if [ $? = 0 ]; then
echo -n "daemon already running"
rc_status -v
rc_exit
elif [ -e /var/run/powersaved.pid ];then
rm -f /var/run/powersaved.pid&> /dev/null
fi;
ACPI_APM=`$powersave_BIN --apm-acpi`
if [ "$ACPI_APM" = "ACPI" ]; then
# set thermal polling frequency
# this should be managed by the daemon later
if [ "$THERMAL_POLLING_FREQUENCY" != "0" ];then
[ -z "$THERMAL_POLLING_FREQUENCY" ] && THERMAL_POLLING_FREQUENCY=2
for x in /proc/acpi/thermal_zone/*; do
[ -w $x/polling_frequency ] && echo "$THERMAL_POLLING_FREQUENCY" >$x/polling_frequency
done
fi
ACPI_EVENT_FILE="/var/run/acpid.socket"
pidof $ACPID_BIN >/dev/null
ACPID_NOT_RUNNING=$?
if [ $ACPID_NOT_RUNNING = 1 ];then
$LOGGER "WARN: Service powersaved skipped. You have to start acpid before powersaved"
echo -n "###############################################
# ACPI system but acpid not running. #
# Start acpid first, then restart powersaved! #
###############################################"
rc_status -s
rc_exit
fi
elif [ "$ACPI_APM" = "APM" ]; then
echo -n "This machine supports APM "
fi
CPUFREQ_MODULES="speedstep_centrino powernow_k8 powernow_k7 powernow_k6 longrun acpi speedstep_ich"
CPUFREQ_MODULES_GREP="^speedstep_centrino\|^speedstep_ich\|^powernow_k8\|^powernow_k7\|^powernow_k6\|^longrun\|^longhaul\|^acpi"
###### load CPUFREQ modules############
# module specfied in sysconfig.cpufreq?
# if the drivers are compiled in, $SYSFS_PATH already exists
if [ "$CPUFREQ_ENABLED" != "no" ] && [ ! -d $SYSFS_PATH ]; then
# test for already loaded modules
ALREADY_LOADED_MODS=`grep $CPUFREQ_MODULES_GREP /proc/modules`
if [ "$CPUFREQD_MODULE" ]; then
modprobe -q $CPUFREQD_MODULE $CPUFREQD_MODULE_OPTS &>/dev/null
RETVAL=$?
# try to load one of the modules we know
elif [ -z "$ALREADY_LOADED_MODS" ] ; then
for MODULE in $CPUFREQ_MODULES; do
modprobe $MODULE &>/dev/null
RETVAL=$?
[ "$RETVAL" = 0 ] && break
done
# skip if no module could be loaded!
if [ "$RETVAL" != 0 ]; then
$LOGGER "CPU frequency scaling is not supported by your processor."
$LOGGER "enter 'CPUFREQ_ENABLED=no' in $CONFIG/cpufreq to avoid this warning."
# remove eventually loaded modules, bug 150381
rmmod speedstep_lib freq_table 2>/dev/null
else
$LOGGER "enter '$MODULE' into CPUFREQD_MODULE in $CONFIG/cpufreq."
$LOGGER "this will speed up starting powersaved and avoid unnecessary warnings in syslog."
fi
fi
fi
[ "$CPUFREQ_ENABLED" != "no" ] && load_governors
###### load CPUFREQ modules############
#### is s2ram installed? If yes, use it to determine suspend to ram capability
if [ -x "$S2RAM_BIN" ]; then
. $CONFIG/sleep
if [ "$SUSPEND2RAM_FORCE" != yes ]; then
$S2RAM_BIN -n > /dev/null 2>&1
RET=$?
if [ $RET -eq 0 ]; then
$LOGGER "s2ram identified your machine as being capable of suspend to RAM. See 's2ram -n' for details."
else
$LOGGER "s2ram does not know your machine. See 's2ram -i' for details. ($RET)"
$LOGGER "Use SUSPEND2RAM_FORCE=yes to override this detection."
fi
else
$LOGGER "SUSPEND2RAM_FORCE is set to yes."
fi
else
$LOGGER "s2ram not installed."
fi
OPTS="$OPTS -v ${DEBUG:-3}"
startproc -e $powersaved_BIN -d ${ACPI_EVENT_FILE:+-f "$ACPI_EVENT_FILE"} $OPTS
rc_status -v
;;
stop)
echo -n "Shutting down powersaved "
killproc -TERM $powersaved_BIN
rc_status -v
;;
try-restart)
$0 status
if test $? = 0; then
$0 restart
else
rc_reset # Not running is not a failure.
fi
rc_status
;;
restart)
$0 stop
$0 start
rc_status
;;
force-reload|reload)
echo -n "Reload service powersaved "
killproc -HUP $powersaved_BIN
rc_status -v
;;
status)
echo -n "Checking for service powersaved "
checkproc $powersaved_BIN
rc_status -v
;;
*)
echo "Usage: $0" \
"{start|stop|status|try-restart|restart|force-reload|reload}"
exit 1
;;
esac
rc_exit
|
