#! /vendor/bin/sh

# Copyright (c) 2012-2013, 2016-2020, The Linux Foundation. All rights reserved.
#
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# 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.
#
# Changes from Qualcomm Innovation Center are provided under the following license:
# Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
# SPDX-License-Identifier: BSD-3-Clause-Clear
#

function configure_zram_parameters() { 
    swapoff /dev/block/zram0 2>/dev/null || true
    
    # Reset zram device
    [ -w /sys/block/zram0/reset ] && echo 1 > /sys/block/zram0/reset
    
    # Set compression algorithm (LZ4 optimized for ARM Cortex-A76/A55)
    echo lz4 > /sys/block/zram0/comp_algorithm 2>/dev/null || return 1
    
    # Optimize compression streams for 8-core big.LITTLE (2x A76 + 6x A55)
    echo 4 > /sys/block/zram0/max_comp_streams 2>/dev/null || true
    
    # Set 4GB zram size
    echo 4294967296 > /sys/block/zram0/disksize 2>/dev/null || return 1
    
    # Initialize and enable swap
    mkswap /dev/block/zram0 2>/dev/null || return 1
    swapon /dev/block/zram0 -p 32758 2>/dev/null || return 1
    
    # VM tuning - Optimized for Realme 6 Pro mobile workloads
    {
        # Swappiness: Slightly higher for 4GB zram to utilize it effectively
        echo 100 > /proc/sys/vm/swappiness
        
        # Cache pressure: Aggressive reclaim for mobile RAM management
        echo 100 > /proc/sys/vm/vfs_cache_pressure
        
        # Page-cluster: Small reads optimal for mobile flash + zram combo
        echo 1 > /proc/sys/vm/page-cluster
        
        # Dirty ratios: Conservative for mobile storage longevity
        echo 20 > /proc/sys/vm/dirty_ratio
        echo 5 > /proc/sys/vm/dirty_background_ratio
        
        # Extra free memory: Buffer for smooth operation
        echo 1024 > /proc/sys/vm/extra_free_kbytes
        
        # Memory overcommit: Conservative for stability
        echo 1 > /proc/sys/vm/overcommit_memory
        echo 50 > /proc/sys/vm/overcommit_ratio
        
        # Additional mobile optimizations for Snapdragon 720G
        echo 1 > /proc/sys/vm/compact_memory 2>/dev/null || true
        echo 0 > /proc/sys/vm/oom_kill_allocating_task 2>/dev/null || true
        
        # Optimize readahead for mobile storage patterns
        echo 128 > /sys/block/*/queue/read_ahead_kb 2>/dev/null || true
        
    } 2>/dev/null
    
    return 0
}


# Core control parameters on silver
echo 0 0 0 0 1 1 > /sys/devices/system/cpu/cpu0/core_ctl/not_preferred
echo 4 > /sys/devices/system/cpu/cpu0/core_ctl/min_cpus
echo 60 > /sys/devices/system/cpu/cpu0/core_ctl/busy_up_thres
echo 40 > /sys/devices/system/cpu/cpu0/core_ctl/busy_down_thres
echo 100 > /sys/devices/system/cpu/cpu0/core_ctl/offline_delay_ms
echo 8 > /sys/devices/system/cpu/cpu0/core_ctl/task_thres
echo 0 > /sys/devices/system/cpu/cpu6/core_ctl/enable

# Setting b.L scheduler parameters
# default sched up and down migrate values are 95 and 85
echo 65 > /proc/sys/kernel/sched_downmigrate
echo 71 > /proc/sys/kernel/sched_upmigrate
# default sched up and down migrate values are 100 and 95
echo 85 > /proc/sys/kernel/sched_group_downmigrate
echo 100 > /proc/sys/kernel/sched_group_upmigrate
echo 1 > /proc/sys/kernel/sched_walt_rotate_big_tasks

#colocation v3 settings
echo 740000 > /proc/sys/kernel/sched_little_cluster_coloc_fmin_khz

# configure governor settings for little cluster
echo "schedutil" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo 0 > /sys/devices/system/cpu/cpu0/cpufreq/schedutil/up_rate_limit_us
echo 0 > /sys/devices/system/cpu/cpu0/cpufreq/schedutil/down_rate_limit_us
echo 1248000 > /sys/devices/system/cpu/cpu0/cpufreq/schedutil/hispeed_freq
echo 576000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq

# configure governor settings for big cluster
echo "schedutil" > /sys/devices/system/cpu/cpu6/cpufreq/scaling_governor
echo 0 > /sys/devices/system/cpu/cpu6/cpufreq/schedutil/up_rate_limit_us
echo 0 > /sys/devices/system/cpu/cpu6/cpufreq/schedutil/down_rate_limit_us
echo 1267200 > /sys/devices/system/cpu/cpu6/cpufreq/schedutil/hispeed_freq
echo 652800 > /sys/devices/system/cpu/cpu6/cpufreq/scaling_min_freq

# sched_load_boost as -6 is equivalent to target load as 85. It is per cpu tunable.
echo -6 >  /sys/devices/system/cpu/cpu6/sched_load_boost
echo -6 >  /sys/devices/system/cpu/cpu7/sched_load_boost
echo 85 > /sys/devices/system/cpu/cpu6/cpufreq/schedutil/hispeed_load

echo "0:1248000" > /sys/module/cpu_boost/parameters/input_boost_freq
echo 40 > /sys/module/cpu_boost/parameters/input_boost_ms

# Enable bus-dcvs
for device in /sys/devices/platform/soc
do
	for cpubw in $device/*cpu-cpu-llcc-bw/devfreq/*cpu-cpu-llcc-bw
	do
		echo "bw_hwmon" > $cpubw/governor
		echo "2288 4577 7110 9155 12298 14236" > $cpubw/bw_hwmon/mbps_zones
		echo 4 > $cpubw/bw_hwmon/sample_ms
		echo 68 > $cpubw/bw_hwmon/io_percent
		echo 20 > $cpubw/bw_hwmon/hist_memory
		echo 0 > $cpubw/bw_hwmon/hyst_length
		echo 80 > $cpubw/bw_hwmon/down_thres
		echo 0 > $cpubw/bw_hwmon/guard_band_mbps
		echo 250 > $cpubw/bw_hwmon/up_scale
		echo 1600 > $cpubw/bw_hwmon/idle_mbps
		echo 50 > $cpubw/polling_interval
	done

	for llccbw in $device/*cpu-llcc-ddr-bw/devfreq/*cpu-llcc-ddr-bw
	do
		echo "bw_hwmon" > $llccbw/governor
		echo "1144 1720 2086 2929 3879 5931 6881 8137" > $llccbw/bw_hwmon/mbps_zones
		echo 4 > $llccbw/bw_hwmon/sample_ms
		echo 68 > $llccbw/bw_hwmon/io_percent
		echo 20 > $llccbw/bw_hwmon/hist_memory
		echo 0 > $llccbw/bw_hwmon/hyst_length
		echo 80 > $llccbw/bw_hwmon/down_thres
		echo 0 > $llccbw/bw_hwmon/guard_band_mbps
		echo 250 > $llccbw/bw_hwmon/up_scale
		echo 1600 > $llccbw/bw_hwmon/idle_mbps
		echo 40 > $llccbw/polling_interval
	done

	for npubw in $device/*npu*-npu-ddr-bw/devfreq/*npu*-npu-ddr-bw
	do
		echo 1 > /sys/devices/virtual/npu/msm_npu/pwr
		echo "bw_hwmon" > $npubw/governor
		echo "1144 1720 2086 2929 3879 5931 6881 8137" > $npubw/bw_hwmon/mbps_zones
		echo 4 > $npubw/bw_hwmon/sample_ms
		echo 80 > $npubw/bw_hwmon/io_percent
		echo 20 > $npubw/bw_hwmon/hist_memory
		echo 10 > $npubw/bw_hwmon/hyst_length
		echo 30 > $npubw/bw_hwmon/down_thres
		echo 0 > $npubw/bw_hwmon/guard_band_mbps
		echo 250 > $npubw/bw_hwmon/up_scale
		echo 0 > $npubw/bw_hwmon/idle_mbps
		echo 40 > $npubw/polling_interval
		echo 0 > /sys/devices/virtual/npu/msm_npu/pwr
	done

	#Enable mem_latency governor for L3, LLCC, and DDR scaling
	for memlat in $device/*cpu*-lat/devfreq/*cpu*-lat
	do
		echo "mem_latency" > $memlat/governor
		echo 10 > $memlat/polling_interval
		echo 400 > $memlat/mem_latency/ratio_ceil
	done

	#Enable cdspl3 governor for L3 cdsp nodes
	for l3cdsp in $device/*cdsp-cdsp-l3-lat/devfreq/*cdsp-cdsp-l3-lat
	do
		echo "cdspl3" > $l3cdsp/governor
	done

	#Gold L3 ratio ceil
	echo 4000 > /sys/class/devfreq/soc:qcom,cpu6-cpu-l3-lat/mem_latency/ratio_ceil

	#Enable compute governor for gold latfloor
	for latfloor in $device/*cpu*-ddr-latfloor*/devfreq/*cpu-ddr-latfloor*
	do
		echo "compute" > $latfloor/governor
		echo 10 > $latfloor/polling_interval
	done

done

# cpuset parameters
echo 0-5 > /dev/cpuset/background/cpus
echo 0-5 > /dev/cpuset/system-background/cpus

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

# Turn on sleep modes
echo 0 > /sys/module/lpm_levels/parameters/sleep_disabled

# configure zram
configure_zram_parameters

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