rootdir/bin/init.kernel.post_boot-bengal.sh - xiaomi-sm6225/android_device_xiaomi_sm6225-common - Gitiles

 # Copyright (c) 2020-2022 Qualcomm Technologies, Inc.
 # All Rights Reserved.
 # Confidential and Proprietary - Qualcomm Technologies, Inc.
 #
 # Copyright (c) 2009-2012, 2014-2019, The Linux Foundation. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are met:
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above copyright
 #       notice, this list of conditions and the following disclaimer in the
 #       documentation and/or other materials provided with the distribution.
 #     * Neither the name of The Linux Foundation nor
 #       the names of its contributors may be used to endorse or promote
 #       products derived from this software without specific prior written
 #       permission.
 #
 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 # IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 # NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 # PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 # OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 # OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #

 KernelVersionStr=`cat /proc/sys/kernel/osrelease`
 KernelVersionS=${KernelVersionStr:2:2}
 KernelVersionA=${KernelVersionStr:0:1}
 KernelVersionB=${KernelVersionS%.*}

 function configure_zram_parameters() {
     MemTotalStr=`cat /proc/meminfo | grep MemTotal`
     MemTotal=${MemTotalStr:16:8}

     low_ram=`getprop ro.config.low_ram`

     # Zram disk - 75% for Go devices.
     # For 512MB Go device, size = 384MB, set same for Non-Go.
     # For 1GB Go device, size = 768MB, set same for Non-Go.
     # For 2GB Go device, size = 1536MB, set same for Non-Go.
     # For >2GB Non-Go devices, size = 50% of RAM size. Limit the size to 4GB.
     # And enable lz4 zram compression for Go targets.

     let RamSizeGB="( $MemTotal / 1048576 ) + 1"
     diskSizeUnit=M
     if [ $RamSizeGB -le 2 ]; then
         let zRamSizeMB="( $RamSizeGB * 1024 ) * 3 / 4"
     else
         let zRamSizeMB="( $RamSizeGB * 1024 ) / 2"
     fi

     # use MB avoid 32 bit overflow
     if [ $zRamSizeMB -gt 4096 ]; then
         let zRamSizeMB=4096
     fi

     if [ "$low_ram" == "true" ]; then
         echo lz4 > /sys/block/zram0/comp_algorithm
     fi

     if [ -f /sys/block/zram0/disksize ]; then
         if [ -f /sys/block/zram0/use_dedup ]; then
             echo 1 > /sys/block/zram0/use_dedup
         fi
         echo "$zRamSizeMB""$diskSizeUnit" > /sys/block/zram0/disksize

         # ZRAM may use more memory than it saves if SLAB_STORE_USER
         # debug option is enabled.
         if [ -e /sys/kernel/slab/zs_handle ]; then
             echo 0 > /sys/kernel/slab/zs_handle/store_user
         fi
         if [ -e /sys/kernel/slab/zspage ]; then
             echo 0 > /sys/kernel/slab/zspage/store_user
         fi

         mkswap /dev/block/zram0
         swapon /dev/block/zram0 -p 32758
     fi
 }

 function configure_read_ahead_kb_values() {
     MemTotalStr=`cat /proc/meminfo | grep MemTotal`
     MemTotal=${MemTotalStr:16:8}

     dmpts=$(ls /sys/block/*/queue/read_ahead_kb | grep -e dm -e mmc -e sd)
     # dmpts holds below read_ahead_kb nodes if exists:
     # /sys/block/dm-0/queue/read_ahead_kb to /sys/block/dm-10/queue/read_ahead_kb
     # /sys/block/sda/queue/read_ahead_kb to /sys/block/sdh/queue/read_ahead_kb

     # Set 128 for <= 3GB &
     # set 512 for >= 4GB targets.
     if [ $MemTotal -le 3145728 ]; then
 	ra_kb=128
     else
 	ra_kb=512
     fi
     if [ -f /sys/block/mmcblk0/bdi/read_ahead_kb ]; then
         echo $ra_kb > /sys/block/mmcblk0/bdi/read_ahead_kb
     fi
     if [ -f /sys/block/mmcblk0rpmb/bdi/read_ahead_kb ]; then
 	echo $ra_kb > /sys/block/mmcblk0rpmb/bdi/read_ahead_kb
     fi
     for dm in $dmpts; do
 	echo $ra_kb > $dm
     done
 }

 function disable_core_ctl() {
     if [ -f /sys/devices/system/cpu/cpu0/core_ctl/enable ]; then
         echo 0 > /sys/devices/system/cpu/cpu0/core_ctl/enable
     else
         echo 1 > /sys/devices/system/cpu/cpu0/core_ctl/disable
     fi
 }

 function configure_memory_parameters() {
     # Set Memory parameters.
     #
     # Set per_process_reclaim tuning parameters
     # All targets will use vmpressure range 50-70,
     # All targets will use 512 pages swap size.
     #
     # Set Low memory killer minfree parameters
     # 32 bit Non-Go, all memory configurations will use 15K series
     # 32 bit Go, all memory configurations will use uLMK + Memcg
     # 64 bit will use Google default LMK series.
     #
     # Set ALMK parameters (usually above the highest minfree values)
     # vmpressure_file_min threshold is always set slightly higher
     # than LMK minfree's last bin value for all targets. It is calculated as
     # vmpressure_file_min = (last bin - second last bin ) + last bin
     #
     # Set allocstall_threshold to 0 for all targets.
     #

     # Set swappiness to 100 for all targets
     echo 100 > /proc/sys/vm/swappiness

     # Disable wsf for all targets beacause we are using efk.
     # wsf Range : 1..1000 So set to bare minimum value 1.

     #Set per-app max kgsl reclaim limit and per shrinker call limit
     if [ -f /sys/class/kgsl/kgsl/page_reclaim_per_call ]; then
        echo 38400 > /sys/class/kgsl/kgsl/page_reclaim_per_call
     fi

     if [ -f /sys/class/kgsl/kgsl/max_reclaim_limit ]; then
        echo 25600 > /sys/class/kgsl/kgsl/max_reclaim_limit
     fi

     configure_zram_parameters

     configure_read_ahead_kb_values

     # Disable periodic kcompactd wakeups. We do not use THP, so having many
     # huge pages is not as necessary.
     echo 0 > /proc/sys/vm/compaction_proactiveness

     # With THP enabled, the kernel greatly increases min_free_kbytes over its
     # default value. Disable THP to prevent resetting of min_free_kbytes
     # value during online/offline pages.

     if [ -f /sys/kernel/mm/transparent_hugepage/enabled ]; then
 		echo never > /sys/kernel/mm/transparent_hugepage/enabled
     fi

     MemTotalStr=`cat /proc/meminfo | grep MemTotal`
     MemTotal=${MemTotalStr:16:8}
     let RamSizeGB="( $MemTotal / 1048576 ) + 1"

     # Set the min_free_kbytes to standard kernel value
     if [ $RamSizeGB -ge 8 ]; then
 		echo 11584 > /proc/sys/vm/min_free_kbytes
     elif [ $RamSizeGB -ge 4 ]; then
 		echo 8192 > /proc/sys/vm/min_free_kbytes
     elif [ $RamSizeGB -ge 2 ]; then
 		echo 5792 > /proc/sys/vm/min_free_kbytes
     else
 		echo 4096 > /proc/sys/vm/min_free_kbytes
     fi
   extra_free_kbytes_backup_enable=`getprop persist.vendor.spc.mi_extra_free_enable`
   MIN_PERCPU_PAGELIST_HIGH_FRACTION=8

   if [ "true" = ${extra_free_kbytes_backup_enable} ]; then
           echo `cat /proc/sys/vm/min_free_kbytes` " " `cat /proc/sys/vm/watermark_scale_factor` " -1" > /sys/kernel/mi_wmark/extra_free_kbytes
           cat /proc/sys/vm/lowmem_reserve_ratio > /proc/sys/vm/lowmem_reserve_ratio

           percpu_pagelist_high_fraction=`cat /proc/sys/vm/percpu_pagelist_high_fraction`
           new_percpu_pagelist_high_fraction=${percpu_pagelist_high_fraction}
           [ ${percpu_pagelist_high_fraction} -lt ${MIN_PERCPU_PAGELIST_HIGH_FRACTION} ] && new_percpu_pagelist_high_fraction=${MIN_PERCPU_PAGELIST_HIGH_FRACTION}
           let new_percpu_pagelist_high_fraction++
           echo ${new_percpu_pagelist_high_fraction} > /proc/sys/vm/percpu_pagelist_high_fraction
           echo ${percpu_pagelist_high_fraction} > /proc/sys/vm/percpu_pagelist_high_fraction

   fi
 }

 function start_hbtp()
 {
         # Start the Host based Touch processing but not in the power off mode.
         bootmode=`getprop ro.bootmode`
         if [ "charger" != $bootmode ]; then
                 start vendor.hbtp
         fi
 }

 if [ -f /sys/devices/soc0/soc_id ]; then
 		soc_id=`cat /sys/devices/soc0/soc_id`
 else
 		soc_id=`cat /sys/devices/system/soc/soc0/id`
 fi

 configure_memory_parameters

 # Configure RT parameters:
 # Long running RT task detection is confined to consolidated builds.
 # Set RT throttle runtime to 50ms more than long running RT
 # task detection time.
 # Set RT throttle period to 100ms more than RT throttle runtime.
 long_running_rt_task_ms=1200
 sched_rt_runtime_ms=`expr $long_running_rt_task_ms + 50`
 sched_rt_runtime_us=`expr $sched_rt_runtime_ms \* 1000`
 sched_rt_period_ms=`expr $sched_rt_runtime_ms + 100`
 sched_rt_period_us=`expr $sched_rt_period_ms \* 1000`
 if [ -d /sys/module/sched_walt_debug ]; then
 	echo $long_running_rt_task_ms > /proc/sys/walt/sched_long_running_rt_task_ms
 fi
 echo $sched_rt_period_us > /proc/sys/kernel/sched_rt_period_us
 echo $sched_rt_runtime_us > /proc/sys/kernel/sched_rt_runtime_us

 # Disable Core control on silver
 echo 0 > /sys/devices/system/cpu/cpu0/core_ctl/enable
 # Core control parameters for gold
 echo 2 > /sys/devices/system/cpu/cpu4/core_ctl/min_cpus
 echo 60 > /sys/devices/system/cpu/cpu4/core_ctl/busy_up_thres
 echo 40 > /sys/devices/system/cpu/cpu4/core_ctl/busy_down_thres
 echo 100 > /sys/devices/system/cpu/cpu4/core_ctl/offline_delay_ms
 echo 4 > /sys/devices/system/cpu/cpu4/core_ctl/task_thres

 # Controls how many more tasks should be eligible to run on gold CPUs
 # w.r.t number of gold CPUs available to trigger assist (max number of
 # tasks eligible to run on previous cluster minus number of CPUs in
 # the previous cluster).
 #
 # Setting to 1 by default which means there should be at least
 # 5 tasks eligible to run on gold cluster (tasks running on gold cores
 # plus misfit tasks on silver cores) to trigger assitance from gold+.
 #echo 1 > /sys/devices/system/cpu/cpu7/core_ctl/nr_prev_assist_thresh

 # Setting b.L scheduler parameters
 echo 65 > /proc/sys/walt/sched_downmigrate
 echo 71 > /proc/sys/walt/sched_upmigrate
 echo 100 > /proc/sys/walt/sched_group_upmigrate
 echo 85 > /proc/sys/walt/sched_group_downmigrate
 echo 1 > /proc/sys/walt/sched_walt_rotate_big_tasks
 echo 400000000 > /proc/sys/walt/sched_coloc_downmigrate_ns
 echo 39000000 39000000 39000000 39000000 39000000 39000000 39000000 39000000 > /proc/sys/walt/sched_coloc_busy_hyst_cpu_ns
 echo 248 > /proc/sys/walt/sched_coloc_busy_hysteresis_enable_cpus
 echo 10 10 10 10 10 10 10 10 > /proc/sys/walt/sched_coloc_busy_hyst_cpu_busy_pct
 echo 8500000 8500000 8500000 8500000 8500000 8500000 8500000 8500000 > /proc/sys/walt/sched_util_busy_hyst_cpu_ns
 echo 255 > /proc/sys/walt/sched_util_busy_hysteresis_enable_cpus
 echo 1 1 1 1 1 1 1 1 > /proc/sys/walt/sched_util_busy_hyst_cpu_util
 echo 40 > /proc/sys/walt/sched_cluster_util_thres_pct
 echo 0 > /proc/sys/walt/sched_idle_enough

 #Set early upmigrate tunables
 freq_to_migrate=1228800
 silver_fmax=`cat /sys/devices/system/cpu/cpufreq/policy0/scaling_max_freq`
 silver_early_upmigrate="$((1024 * $silver_fmax / $freq_to_migrate))"
 silver_early_downmigrate="$((((1024 * $silver_fmax) / (((10*$freq_to_migrate) - $silver_fmax) / 10))))"
 sched_upmigrate=`cat /proc/sys/walt/sched_upmigrate`
 sched_downmigrate=`cat /proc/sys/walt/sched_downmigrate`
 sched_upmigrate=${sched_upmigrate:0:2}
 sched_downmigrate=${sched_downmigrate:0:2}
 gold_early_upmigrate="$((1024 * 100 / $sched_upmigrate))"
 gold_early_downmigrate="$((1024 * 100 / $sched_downmigrate))"
 echo $silver_early_downmigrate $gold_early_downmigrate > /proc/sys/walt/sched_early_downmigrate
 echo $silver_early_upmigrate $gold_early_upmigrate > /proc/sys/walt/sched_early_upmigrate

 # set the threshold for low latency task boost feature which prioritize
 # binder activity tasks
 echo 325 > /proc/sys/walt/walt_low_latency_task_threshold

 # cpuset parameters
 echo 0-3 > /dev/cpuset/background/cpus
 echo 0-3 > /dev/cpuset/system-background/cpus

 # Turn off scheduler boost at the end
 echo 0 > /proc/sys/walt/sched_boost

 # Reset the RT boost, which is 1024 (max) by default.
 echo 0 > /proc/sys/kernel/sched_util_clamp_min_rt_default

 # configure governor settings for silver cluster
 echo "walt" > /sys/devices/system/cpu/cpufreq/policy0/scaling_governor
 echo 0 > /sys/devices/system/cpu/cpufreq/policy0/walt/down_rate_limit_us
 echo 0 > /sys/devices/system/cpu/cpufreq/policy0/walt/up_rate_limit_us
 echo 1516800 > /sys/devices/system/cpu/cpufreq/policy0/walt/hispeed_freq
 echo 691200 > /sys/devices/system/cpu/cpufreq/policy0/scaling_min_freq
 echo 1 > /sys/devices/system/cpu/cpufreq/policy0/walt/pl
 echo 0 > /sys/devices/system/cpu/cpufreq/policy0/walt/rtg_boost_freq

 # configure input boost settings
 echo 1190000 0 0 0 0 0 0 0 > /proc/sys/walt/input_boost/input_boost_freq
 echo 120 > /proc/sys/walt/input_boost/input_boost_ms

 echo 1516800 0 0 0 2208000 0 0 0 > /proc/sys/walt/input_boost/powerkey_input_boost_freq
 echo 400 > /proc/sys/walt/input_boost/powerkey_input_boost_ms

 # configure governor settings for gold cluster
 echo "walt" > /sys/devices/system/cpu/cpufreq/policy4/scaling_governor
 echo 0 > /sys/devices/system/cpu/cpufreq/policy4/walt/down_rate_limit_us
 echo 0 > /sys/devices/system/cpu/cpufreq/policy4/walt/up_rate_limit_us
 echo 1344000 > /sys/devices/system/cpu/cpufreq/policy4/walt/hispeed_freq
 echo 1056000 > /sys/devices/system/cpu/cpufreq/policy4/scaling_min_freq
 echo 1 > /sys/devices/system/cpu/cpufreq/policy4/walt/pl
 echo 0 > /sys/devices/system/cpu/cpufreq/policy4/walt/rtg_boost_freq

 # cpuset parameters
 echo 0-2 > /dev/cpuset/background/cpus
 echo 0-3 > /dev/cpuset/system-background/cpus
 echo 4-7 > /dev/cpuset/foreground/boost/cpus
 echo 0-2,4-7 > /dev/cpuset/foreground/cpus
 echo 0-7 > /dev/cpuset/top-app/cpus

 # configure bus-dcvs
 bus_dcvs="/sys/devices/system/cpu/bus_dcvs"

 for device in $bus_dcvs/*
 do
 	cat $device/hw_min_freq > $device/boost_freq
 done

 for ddrbw in $bus_dcvs/DDR/*bwmon-ddr
 do
 	echo "762 2086 2929 3879 5931 6881 7980" > $ddrbw/mbps_zones
 	echo 4 > $ddrbw/sample_ms
 	echo 85 > $ddrbw/io_percent
 	echo 20 > $ddrbw/hist_memory
 	echo 0 > $ddrbw/hyst_length
 	echo 80 > $ddrbw/down_thres
 	echo 0 > $ddrbw/guard_band_mbps
 	echo 250 > $ddrbw/up_scale
 	echo 1600 > $ddrbw/idle_mbps
 	echo 2092000 > $ddrbw/max_freq
 done

 echo s2idle > /sys/power/mem_sleep
 echo N > /sys/devices/system/cpu/qcom_lpm/parameters/sleep_disabled

 # Let kernel know our image version/variant/crm_version
 if [ -f /sys/devices/soc0/select_image ]; then
 	image_version="10:"
 	image_version+=`getprop ro.build.id`
 	image_version+=":"
 	image_version+=`getprop ro.build.version.incremental`
 	image_variant=`getprop ro.product.name`
 	image_variant+="-"
 	image_variant+=`getprop ro.build.type`
 	oem_version=`getprop ro.build.version.codename`
 	echo 10 > /sys/devices/soc0/select_image
 	echo $image_version > /sys/devices/soc0/image_version
 	echo $image_variant > /sys/devices/soc0/image_variant
 	echo $oem_version > /sys/devices/soc0/image_crm_version
 fi

 echo 4 > /proc/sys/kernel/printk

 # Change console log level as per console config property
 console_config=`getprop persist.vendor.console.silent.config`
 case "$console_config" in
 	"1")
 		echo "Enable console config to $console_config"
 		echo 0 > /proc/sys/kernel/printk
 	;;
 	*)
 		echo "Enable console config to $console_config"
 	;;
 esac

 # Post-setup services
 setprop vendor.post_boot.parsed 1
	# Copyright (c) 2020-2022 Qualcomm Technologies, Inc.
	# All Rights Reserved.
	# Confidential and Proprietary - Qualcomm Technologies, Inc.
	#
	# Copyright (c) 2009-2012, 2014-2019, The Linux Foundation. All rights reserved.
	#
	# Redistribution and use in source and binary forms, with or without
	# modification, are permitted provided that the following conditions are met:
	# * Redistributions of source code must retain the above copyright
	# notice, this list of conditions and the following disclaimer.
	# * Redistributions in binary form must reproduce the above copyright
	# notice, this list of conditions and the following disclaimer in the
	# documentation and/or other materials provided with the distribution.
	# * Neither the name of The Linux Foundation nor
	# the names of its contributors may be used to endorse or promote
	# products derived from this software without specific prior written
	# permission.
	#
	# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	# IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	# NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
	# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
	# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
	# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
	# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
	# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	#

	KernelVersionStr=`cat /proc/sys/kernel/osrelease`
	KernelVersionS=${KernelVersionStr:2:2}
	KernelVersionA=${KernelVersionStr:0:1}
	KernelVersionB=${KernelVersionS%.*}

	function configure_zram_parameters() {
	MemTotalStr=`cat /proc/meminfo \| grep MemTotal`
	MemTotal=${MemTotalStr:16:8}

	low_ram=`getprop ro.config.low_ram`

	# Zram disk - 75% for Go devices.
	# For 512MB Go device, size = 384MB, set same for Non-Go.
	# For 1GB Go device, size = 768MB, set same for Non-Go.
	# For 2GB Go device, size = 1536MB, set same for Non-Go.
	# For >2GB Non-Go devices, size = 50% of RAM size. Limit the size to 4GB.
	# And enable lz4 zram compression for Go targets.

	let RamSizeGB="( $MemTotal / 1048576 ) + 1"
	diskSizeUnit=M
	if [ $RamSizeGB -le 2 ]; then
	let zRamSizeMB="( $RamSizeGB * 1024 ) * 3 / 4"
	else
	let zRamSizeMB="( $RamSizeGB * 1024 ) / 2"
	fi

	# use MB avoid 32 bit overflow
	if [ $zRamSizeMB -gt 4096 ]; then
	let zRamSizeMB=4096
	fi

	if [ "$low_ram" == "true" ]; then
	echo lz4 > /sys/block/zram0/comp_algorithm
	fi

	if [ -f /sys/block/zram0/disksize ]; then
	if [ -f /sys/block/zram0/use_dedup ]; then
	echo 1 > /sys/block/zram0/use_dedup
	fi
	echo "$zRamSizeMB""$diskSizeUnit" > /sys/block/zram0/disksize

	# ZRAM may use more memory than it saves if SLAB_STORE_USER
	# debug option is enabled.
	if [ -e /sys/kernel/slab/zs_handle ]; then
	echo 0 > /sys/kernel/slab/zs_handle/store_user
	fi
	if [ -e /sys/kernel/slab/zspage ]; then
	echo 0 > /sys/kernel/slab/zspage/store_user
	fi

	mkswap /dev/block/zram0
	swapon /dev/block/zram0 -p 32758
	fi
	}

	function configure_read_ahead_kb_values() {
	MemTotalStr=`cat /proc/meminfo \| grep MemTotal`
	MemTotal=${MemTotalStr:16:8}

	dmpts=$(ls /sys/block/*/queue/read_ahead_kb \| grep -e dm -e mmc -e sd)
	# dmpts holds below read_ahead_kb nodes if exists:
	# /sys/block/dm-0/queue/read_ahead_kb to /sys/block/dm-10/queue/read_ahead_kb
	# /sys/block/sda/queue/read_ahead_kb to /sys/block/sdh/queue/read_ahead_kb

	# Set 128 for <= 3GB &
	# set 512 for >= 4GB targets.
	if [ $MemTotal -le 3145728 ]; then
	ra_kb=128
	else
	ra_kb=512
	fi
	if [ -f /sys/block/mmcblk0/bdi/read_ahead_kb ]; then
	echo $ra_kb > /sys/block/mmcblk0/bdi/read_ahead_kb
	fi
	if [ -f /sys/block/mmcblk0rpmb/bdi/read_ahead_kb ]; then
	echo $ra_kb > /sys/block/mmcblk0rpmb/bdi/read_ahead_kb
	fi
	for dm in $dmpts; do
	echo $ra_kb > $dm
	done
	}

	function disable_core_ctl() {
	if [ -f /sys/devices/system/cpu/cpu0/core_ctl/enable ]; then
	echo 0 > /sys/devices/system/cpu/cpu0/core_ctl/enable
	else
	echo 1 > /sys/devices/system/cpu/cpu0/core_ctl/disable
	fi
	}

	function configure_memory_parameters() {
	# Set Memory parameters.
	#
	# Set per_process_reclaim tuning parameters
	# All targets will use vmpressure range 50-70,
	# All targets will use 512 pages swap size.
	#
	# Set Low memory killer minfree parameters
	# 32 bit Non-Go, all memory configurations will use 15K series
	# 32 bit Go, all memory configurations will use uLMK + Memcg
	# 64 bit will use Google default LMK series.
	#
	# Set ALMK parameters (usually above the highest minfree values)
	# vmpressure_file_min threshold is always set slightly higher
	# than LMK minfree's last bin value for all targets. It is calculated as
	# vmpressure_file_min = (last bin - second last bin ) + last bin
	#
	# Set allocstall_threshold to 0 for all targets.
	#

	# Set swappiness to 100 for all targets
	echo 100 > /proc/sys/vm/swappiness

	# Disable wsf for all targets beacause we are using efk.
	# wsf Range : 1..1000 So set to bare minimum value 1.

	#Set per-app max kgsl reclaim limit and per shrinker call limit
	if [ -f /sys/class/kgsl/kgsl/page_reclaim_per_call ]; then
	echo 38400 > /sys/class/kgsl/kgsl/page_reclaim_per_call
	fi

	if [ -f /sys/class/kgsl/kgsl/max_reclaim_limit ]; then
	echo 25600 > /sys/class/kgsl/kgsl/max_reclaim_limit
	fi

	configure_zram_parameters

	configure_read_ahead_kb_values

	# Disable periodic kcompactd wakeups. We do not use THP, so having many
	# huge pages is not as necessary.
	echo 0 > /proc/sys/vm/compaction_proactiveness

	# With THP enabled, the kernel greatly increases min_free_kbytes over its
	# default value. Disable THP to prevent resetting of min_free_kbytes
	# value during online/offline pages.

	if [ -f /sys/kernel/mm/transparent_hugepage/enabled ]; then
	echo never > /sys/kernel/mm/transparent_hugepage/enabled
	fi

	MemTotalStr=`cat /proc/meminfo \| grep MemTotal`
	MemTotal=${MemTotalStr:16:8}
	let RamSizeGB="( $MemTotal / 1048576 ) + 1"

	# Set the min_free_kbytes to standard kernel value
	if [ $RamSizeGB -ge 8 ]; then
	echo 11584 > /proc/sys/vm/min_free_kbytes
	elif [ $RamSizeGB -ge 4 ]; then
	echo 8192 > /proc/sys/vm/min_free_kbytes
	elif [ $RamSizeGB -ge 2 ]; then
	echo 5792 > /proc/sys/vm/min_free_kbytes
	else
	echo 4096 > /proc/sys/vm/min_free_kbytes
	fi
	extra_free_kbytes_backup_enable=`getprop persist.vendor.spc.mi_extra_free_enable`
	MIN_PERCPU_PAGELIST_HIGH_FRACTION=8

	if [ "true" = ${extra_free_kbytes_backup_enable} ]; then
	echo `cat /proc/sys/vm/min_free_kbytes` " " `cat /proc/sys/vm/watermark_scale_factor` " -1" > /sys/kernel/mi_wmark/extra_free_kbytes
	cat /proc/sys/vm/lowmem_reserve_ratio > /proc/sys/vm/lowmem_reserve_ratio

	percpu_pagelist_high_fraction=`cat /proc/sys/vm/percpu_pagelist_high_fraction`
	new_percpu_pagelist_high_fraction=${percpu_pagelist_high_fraction}
	[ ${percpu_pagelist_high_fraction} -lt ${MIN_PERCPU_PAGELIST_HIGH_FRACTION} ] && new_percpu_pagelist_high_fraction=${MIN_PERCPU_PAGELIST_HIGH_FRACTION}
	let new_percpu_pagelist_high_fraction++
	echo ${new_percpu_pagelist_high_fraction} > /proc/sys/vm/percpu_pagelist_high_fraction
	echo ${percpu_pagelist_high_fraction} > /proc/sys/vm/percpu_pagelist_high_fraction

	fi
	}

	function start_hbtp()
	{
	# Start the Host based Touch processing but not in the power off mode.
	bootmode=`getprop ro.bootmode`
	if [ "charger" != $bootmode ]; then
	start vendor.hbtp
	fi
	}

	if [ -f /sys/devices/soc0/soc_id ]; then
	soc_id=`cat /sys/devices/soc0/soc_id`
	else
	soc_id=`cat /sys/devices/system/soc/soc0/id`
	fi

	configure_memory_parameters

	# Configure RT parameters:
	# Long running RT task detection is confined to consolidated builds.
	# Set RT throttle runtime to 50ms more than long running RT
	# task detection time.
	# Set RT throttle period to 100ms more than RT throttle runtime.
	long_running_rt_task_ms=1200
	sched_rt_runtime_ms=`expr $long_running_rt_task_ms + 50`
	sched_rt_runtime_us=`expr $sched_rt_runtime_ms \* 1000`
	sched_rt_period_ms=`expr $sched_rt_runtime_ms + 100`
	sched_rt_period_us=`expr $sched_rt_period_ms \* 1000`
	if [ -d /sys/module/sched_walt_debug ]; then
	echo $long_running_rt_task_ms > /proc/sys/walt/sched_long_running_rt_task_ms
	fi
	echo $sched_rt_period_us > /proc/sys/kernel/sched_rt_period_us
	echo $sched_rt_runtime_us > /proc/sys/kernel/sched_rt_runtime_us

	# Disable Core control on silver
	echo 0 > /sys/devices/system/cpu/cpu0/core_ctl/enable
	# Core control parameters for gold
	echo 2 > /sys/devices/system/cpu/cpu4/core_ctl/min_cpus
	echo 60 > /sys/devices/system/cpu/cpu4/core_ctl/busy_up_thres
	echo 40 > /sys/devices/system/cpu/cpu4/core_ctl/busy_down_thres
	echo 100 > /sys/devices/system/cpu/cpu4/core_ctl/offline_delay_ms
	echo 4 > /sys/devices/system/cpu/cpu4/core_ctl/task_thres

	# Controls how many more tasks should be eligible to run on gold CPUs
	# w.r.t number of gold CPUs available to trigger assist (max number of
	# tasks eligible to run on previous cluster minus number of CPUs in
	# the previous cluster).
	#
	# Setting to 1 by default which means there should be at least
	# 5 tasks eligible to run on gold cluster (tasks running on gold cores
	# plus misfit tasks on silver cores) to trigger assitance from gold+.
	#echo 1 > /sys/devices/system/cpu/cpu7/core_ctl/nr_prev_assist_thresh

	# Setting b.L scheduler parameters
	echo 65 > /proc/sys/walt/sched_downmigrate
	echo 71 > /proc/sys/walt/sched_upmigrate
	echo 100 > /proc/sys/walt/sched_group_upmigrate
	echo 85 > /proc/sys/walt/sched_group_downmigrate
	echo 1 > /proc/sys/walt/sched_walt_rotate_big_tasks
	echo 400000000 > /proc/sys/walt/sched_coloc_downmigrate_ns
	echo 39000000 39000000 39000000 39000000 39000000 39000000 39000000 39000000 > /proc/sys/walt/sched_coloc_busy_hyst_cpu_ns
	echo 248 > /proc/sys/walt/sched_coloc_busy_hysteresis_enable_cpus
	echo 10 10 10 10 10 10 10 10 > /proc/sys/walt/sched_coloc_busy_hyst_cpu_busy_pct
	echo 8500000 8500000 8500000 8500000 8500000 8500000 8500000 8500000 > /proc/sys/walt/sched_util_busy_hyst_cpu_ns
	echo 255 > /proc/sys/walt/sched_util_busy_hysteresis_enable_cpus
	echo 1 1 1 1 1 1 1 1 > /proc/sys/walt/sched_util_busy_hyst_cpu_util
	echo 40 > /proc/sys/walt/sched_cluster_util_thres_pct
	echo 0 > /proc/sys/walt/sched_idle_enough

	#Set early upmigrate tunables
	freq_to_migrate=1228800
	silver_fmax=`cat /sys/devices/system/cpu/cpufreq/policy0/scaling_max_freq`
	silver_early_upmigrate="$((1024 * $silver_fmax / $freq_to_migrate))"
	silver_early_downmigrate="$((((1024 * $silver_fmax) / (((10*$freq_to_migrate) - $silver_fmax) / 10))))"
	sched_upmigrate=`cat /proc/sys/walt/sched_upmigrate`
	sched_downmigrate=`cat /proc/sys/walt/sched_downmigrate`
	sched_upmigrate=${sched_upmigrate:0:2}
	sched_downmigrate=${sched_downmigrate:0:2}
	gold_early_upmigrate="$((1024 * 100 / $sched_upmigrate))"
	gold_early_downmigrate="$((1024 * 100 / $sched_downmigrate))"
	echo $silver_early_downmigrate $gold_early_downmigrate > /proc/sys/walt/sched_early_downmigrate
	echo $silver_early_upmigrate $gold_early_upmigrate > /proc/sys/walt/sched_early_upmigrate

	# set the threshold for low latency task boost feature which prioritize
	# binder activity tasks
	echo 325 > /proc/sys/walt/walt_low_latency_task_threshold

	# cpuset parameters
	echo 0-3 > /dev/cpuset/background/cpus
	echo 0-3 > /dev/cpuset/system-background/cpus

	# Turn off scheduler boost at the end
	echo 0 > /proc/sys/walt/sched_boost

	# Reset the RT boost, which is 1024 (max) by default.
	echo 0 > /proc/sys/kernel/sched_util_clamp_min_rt_default

	# configure governor settings for silver cluster
	echo "walt" > /sys/devices/system/cpu/cpufreq/policy0/scaling_governor
	echo 0 > /sys/devices/system/cpu/cpufreq/policy0/walt/down_rate_limit_us
	echo 0 > /sys/devices/system/cpu/cpufreq/policy0/walt/up_rate_limit_us
	echo 1516800 > /sys/devices/system/cpu/cpufreq/policy0/walt/hispeed_freq
	echo 691200 > /sys/devices/system/cpu/cpufreq/policy0/scaling_min_freq
	echo 1 > /sys/devices/system/cpu/cpufreq/policy0/walt/pl
	echo 0 > /sys/devices/system/cpu/cpufreq/policy0/walt/rtg_boost_freq

	# configure input boost settings
	echo 1190000 0 0 0 0 0 0 0 > /proc/sys/walt/input_boost/input_boost_freq
	echo 120 > /proc/sys/walt/input_boost/input_boost_ms

	echo 1516800 0 0 0 2208000 0 0 0 > /proc/sys/walt/input_boost/powerkey_input_boost_freq
	echo 400 > /proc/sys/walt/input_boost/powerkey_input_boost_ms

	# configure governor settings for gold cluster
	echo "walt" > /sys/devices/system/cpu/cpufreq/policy4/scaling_governor
	echo 0 > /sys/devices/system/cpu/cpufreq/policy4/walt/down_rate_limit_us
	echo 0 > /sys/devices/system/cpu/cpufreq/policy4/walt/up_rate_limit_us
	echo 1344000 > /sys/devices/system/cpu/cpufreq/policy4/walt/hispeed_freq
	echo 1056000 > /sys/devices/system/cpu/cpufreq/policy4/scaling_min_freq
	echo 1 > /sys/devices/system/cpu/cpufreq/policy4/walt/pl
	echo 0 > /sys/devices/system/cpu/cpufreq/policy4/walt/rtg_boost_freq

	# cpuset parameters
	echo 0-2 > /dev/cpuset/background/cpus
	echo 0-3 > /dev/cpuset/system-background/cpus
	echo 4-7 > /dev/cpuset/foreground/boost/cpus
	echo 0-2,4-7 > /dev/cpuset/foreground/cpus
	echo 0-7 > /dev/cpuset/top-app/cpus

	# configure bus-dcvs
	bus_dcvs="/sys/devices/system/cpu/bus_dcvs"

	for device in $bus_dcvs/*
	do
	cat $device/hw_min_freq > $device/boost_freq
	done

	for ddrbw in $bus_dcvs/DDR/*bwmon-ddr
	do
	echo "762 2086 2929 3879 5931 6881 7980" > $ddrbw/mbps_zones
	echo 4 > $ddrbw/sample_ms
	echo 85 > $ddrbw/io_percent
	echo 20 > $ddrbw/hist_memory
	echo 0 > $ddrbw/hyst_length
	echo 80 > $ddrbw/down_thres
	echo 0 > $ddrbw/guard_band_mbps
	echo 250 > $ddrbw/up_scale
	echo 1600 > $ddrbw/idle_mbps
	echo 2092000 > $ddrbw/max_freq
	done

	echo s2idle > /sys/power/mem_sleep
	echo N > /sys/devices/system/cpu/qcom_lpm/parameters/sleep_disabled

	# Let kernel know our image version/variant/crm_version
	if [ -f /sys/devices/soc0/select_image ]; then
	image_version="10:"
	image_version+=`getprop ro.build.id`
	image_version+=":"
	image_version+=`getprop ro.build.version.incremental`
	image_variant=`getprop ro.product.name`
	image_variant+="-"
	image_variant+=`getprop ro.build.type`
	oem_version=`getprop ro.build.version.codename`
	echo 10 > /sys/devices/soc0/select_image
	echo $image_version > /sys/devices/soc0/image_version
	echo $image_variant > /sys/devices/soc0/image_variant
	echo $oem_version > /sys/devices/soc0/image_crm_version
	fi

	echo 4 > /proc/sys/kernel/printk

	# Change console log level as per console config property
	console_config=`getprop persist.vendor.console.silent.config`
	case "$console_config" in
	"1")
	echo "Enable console config to $console_config"
	echo 0 > /proc/sys/kernel/printk
	;;
	*)
	echo "Enable console config to $console_config"
	;;
	esac

	# Post-setup services
	setprop vendor.post_boot.parsed 1