From b39eb14009eff20ce42da043d1e58f7fd3aedfaf Mon Sep 17 00:00:00 2001
From: ivanmeler <i_ivan@windowslive.com>
Date: Fri, 15 Mar 2024 18:29:27 +0000
Subject: [PATCH] Improve memory management add swap inherite common 4gb ram
 dalvik config

---
 rootdir/bin/init.qcom.post_boot.sh | 59 +++---------------------------
 rootdir/etc/fstab.qcom             |  3 ++
 rootdir/etc/init.qcom.rc           |  4 ++
 3 files changed, 13 insertions(+), 53 deletions(-)

diff --git a/rootdir/bin/init.qcom.post_boot.sh b/rootdir/bin/init.qcom.post_boot.sh
index 55a3194..0996638 100755
--- a/rootdir/bin/init.qcom.post_boot.sh
+++ b/rootdir/bin/init.qcom.post_boot.sh
@@ -27,57 +27,6 @@
 # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
 
-# Function from LineageOS/android_device_oneplus_oneplus3
-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
-}
-
 # Let kernel know our image version/variant/crm_version
 if [ -f /sys/devices/soc0/select_image ]; then
     image_version="10:"
@@ -106,5 +55,9 @@ case "$console_config" in
         ;;
 esac
 
-# Enable ZRAM
-configure_zram_parameters
+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
diff --git a/rootdir/etc/fstab.qcom b/rootdir/etc/fstab.qcom
index 8d7cb73..908d80e 100644
--- a/rootdir/etc/fstab.qcom
+++ b/rootdir/etc/fstab.qcom
@@ -22,3 +22,6 @@
 # SDCard
 /devices/soc/74a4900.sdhci/mmc_host/mmc*                        auto    auto    defaults    voldmanaged=sdcard:auto,encryptable=userdata
 /devices/soc/6a00000.ssusb/6a00000.dwc3/xhci-hcd.0.auto/usb*    auto    auto    defaults    voldmanaged=usb:auto
+
+# ZRAM
+/dev/block/zram0 none swap defaults zramsize=60%
diff --git a/rootdir/etc/init.qcom.rc b/rootdir/etc/init.qcom.rc
index 84bef7e..ac43c18 100644
--- a/rootdir/etc/init.qcom.rc
+++ b/rootdir/etc/init.qcom.rc
@@ -52,6 +52,10 @@ on init
     write /sys/fs/cgroup/memory/bg/memory.move_charge_at_immigrate 1
     chown root system /sys/fs/cgroup/memory/bg/tasks
     chmod 0660 /sys/fs/cgroup/memory/bg/tasks
+    write /proc/sys/vm/swappiness 100
+    write /sys/block/zram0/comp_algorithm lz4
+    write /sys/module/zswap/parameters/enabled 1
+    
 
     # Add preload partition.
     mkdir /preload 0771 system system