1#! /vendor/bin/sh 2 3################################################################################ 4# helper functions to allow Android init like script 5 6function write() { 7 echo -n $2 > $1 8} 9 10function copy() { 11 cat $1 > $2 12} 13 14################################################################################ 15 16# Enable bus-dcvs 17for cpubw in /sys/class/devfreq/*qcom,cpubw* 18do 19 write $cpubw/governor "bw_hwmon" 20 write $cpubw/polling_interval 50 21 write $cpubw/bw_hwmon/mbps_zones "3143 5859 11863 13763" 22 write $cpubw/bw_hwmon/sample_ms 4 23 write $cpubw/bw_hwmon/io_percent 34 24 write $cpubw/bw_hwmon/hist_memory 20 25 write $cpubw/bw_hwmon/hyst_length 10 26 write $cpubw/bw_hwmon/low_power_ceil_mbps 0 27 write $cpubw/bw_hwmon/low_power_io_percent 34 28 write $cpubw/bw_hwmon/low_power_delay 20 29 write $cpubw/bw_hwmon/guard_band_mbps 0 30 write $cpubw/bw_hwmon/up_scale 250 31 write $cpubw/bw_hwmon/idle_mbps 1600 32done 33 34write /sys/class/devfreq/soc:qcom,mincpubw/governor "cpufreq" 35 36# Enable memlat governor 37#for memlat in /sys/class/devfreq/*qcom,memlat-cpu* 38#do 39# write $memlat/governor "mem_latency" 40# write $memlat/polling_interval 10 41# write $memlat/mem_latency/ratio_ceil 400 42#done 43 44# Signal perfd that boot has completed 45setprop sys.post_boot.parsed 1 46 47# On debuggable builds, enable console_suspend if uart is enabled to save power 48# Otherwise, disable console_suspend to get better logging for kernel crashes 49if [[ $(getprop ro.debuggable) == "1" && ! -e /sys/class/tty/ttyMSM0 ]] 50then 51 write /sys/module/printk/parameters/console_suspend N 52fi 53