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on enable-low-power
    # Enable PowerHAL hint processing
    setprop vendor.powerhal.init 1

on property:init.svc.recovery=running
    trigger enable-low-power

on property:sys.boot_completed=1
    trigger enable-low-power

    # Runtime fs tuning
    write /sys/block/sda/queue/nr_requests 128
    write /sys/block/sda/queue/iostats 1

    # Block layer tuning: discard chunk size up to 128MB
    # Otherwise, contiguous discards can be merged
    write /sys/block/sda/queue/discard_max_bytes 134217728

    # Back to default VM settings
    write /proc/sys/vm/dirty_expire_centisecs 3000
    write /proc/sys/vm/dirty_background_ratio 10

    # Setup runtime cpusets
    write /dev/cpuset/top-app/cpus 0-7
    write /dev/cpuset/foreground/cpus 0-3,5-6
    write /dev/cpuset/background/cpus 0-1
    write /dev/cpuset/system-background/cpus 0-3
    write /dev/cpuset/restricted/cpus 0-3

    # Setup runtime blkio
    # value for group_idle is us
    write /dev/blkio/blkio.weight 1000
    write /dev/blkio/background/blkio.weight 200
    write /dev/blkio/blkio.group_idle 2000
    write /dev/blkio/background/blkio.group_idle 0

on early-init
    # configure governor settings
    write /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor schedutil
    write /sys/devices/system/cpu/cpu0/cpufreq/schedutil/up_rate_limit_us 500
    write /sys/devices/system/cpu/cpu0/cpufreq/schedutil/down_rate_limit_us 20000

on init
    # Boot time cpuset and stune
    write /dev/cpuset/top-app/cpus 0-7
    write /dev/cpuset/foreground/cpus 0-7
    write /dev/cpuset/background/cpus 0-5
    write /dev/cpuset/system-background/cpus 0-5
    write /dev/cpuset/restricted/cpus 2-5

    # Boot time fs tuning
    write /sys/block/sda/queue/iostats 0
    write /sys/block/sda/queue/scheduler cfq
    write /sys/block/sda/queue/iosched/slice_idle 0
    write /sys/block/sda/queue/nr_requests 256

    # Disable powersaving
    write /sys/module/lpm_levels/parameters/sleep_disabled 1

    # bring back all cores
    write /sys/devices/system/cpu/cpu0/online 1
    write /sys/devices/system/cpu/cpu1/online 1
    write /sys/devices/system/cpu/cpu2/online 1
    write /sys/devices/system/cpu/cpu3/online 1
    write /sys/devices/system/cpu/cpu4/online 1
    write /sys/devices/system/cpu/cpu5/online 1
    write /sys/devices/system/cpu/cpu6/online 1
    write /sys/devices/system/cpu/cpu7/online 1

    # report max frequency to unity tasks.
    write /proc/sys/kernel/sched_lib_name "UnityMain,libunity.so"
    write /proc/sys/kernel/sched_lib_mask_force 255