1#!/bin/sh 2# 3# Modify the power profile based on AC line state. This script is 4# usually called from devd(8). 5# 6# Arguments: 0x00 (AC offline, economy) or 0x01 (AC online, performance) 7# 8# 9 10# PROVIDE: power_profile 11# REQUIRE: FILESYSTEMS syslogd 12# KEYWORD: nojail nostart 13 14. /etc/rc.subr 15 16name="power_profile" 17desc="Modify the power profile based on AC line state" 18stop_cmd=':' 19LOGGER="logger -t power_profile -p daemon.notice" 20 21# Set a given sysctl node to a value. 22# 23# Variables: 24# $node: sysctl node to set with the new value 25# $value: HIGH for the highest performance value, LOW for the best 26# economy value, or the value itself. 27# $highest_value: maximum value for this sysctl, when $value is "HIGH" 28# $lowest_value: minimum value for this sysctl, when $value is "LOW" 29# 30sysctl_set() 31{ 32 # Check if the node exists 33 if [ -z "$(sysctl -n ${node} 2> /dev/null)" ]; then 34 return 35 fi 36 37 # Get the new value, checking for special types HIGH or LOW 38 case ${value} in 39 [Hh][Ii][Gg][Hh]) 40 value=${highest_value} 41 ;; 42 [Ll][Oo][Ww]) 43 value=${lowest_value} 44 ;; 45 [Nn][Oo][Nn][Ee]) 46 return 47 ;; 48 *) 49 ;; 50 esac 51 52 # Set the desired value 53 if [ -n "${value}" ]; then 54 if ! sysctl ${node}=${value} > /dev/null 2>&1; then 55 warn "unable to set ${node}=${value}" 56 fi 57 fi 58} 59 60if [ $# -ne 1 ]; then 61 err 1 "Usage: $0 [0x00|0x01]" 62fi 63load_rc_config $name 64 65# Find the next state (performance or economy). 66state=$1 67case ${state} in 680x01 | '') 69 ${LOGGER} "changed to 'performance'" 70 profile="performance" 71 ;; 720x00) 73 ${LOGGER} "changed to 'economy'" 74 profile="economy" 75 ;; 76*) 77 echo "Usage: $0 [0x00|0x01]" 78 exit 1 79esac 80 81# Set the various sysctls based on the profile's values. 82node="hw.acpi.cpu.cx_lowest" 83highest_value="C1" 84lowest_value="Cmax" 85eval value=\$${profile}_cx_lowest 86sysctl_set 87 88node="dev.cpu.0.freq" 89highest_value="`(sysctl -n dev.cpu.0.freq_levels | \ 90 awk '{ split($0, a, "[/ ]"); print a[1] }' -) 2> /dev/null`" 91lowest_value="`(sysctl -n dev.cpu.0.freq_levels | \ 92 awk '{ split($0, a, "[/ ]"); print a[length(a) - 1] }' -) 2> /dev/null`" 93eval value=\$${profile}_cpu_freq 94sysctl_set 95 96exit 0 97