From 1b46c33b994329c02fd107922932de1e40441329 Mon Sep 17 00:00:00 2001
From: guibing <guibing@google.com>
Date: Wed, 14 Jun 2023 00:35:58 +0000
Subject: [PATCH 1/2] Set PELT HALFLIFE to 8ms before early init boot stage

It's for early boot stage boost. After early init stage, change
it back to the default 32ms.

Bug: 284039815
Test: boot ab tests
Change-Id: I3e623886e97e561086df46f388f9317d4a75c35c
---
 BoardConfig-common.mk | 1 +
 conf/init.zuma.rc     | 1 +
 2 files changed, 2 insertions(+)

diff --git a/BoardConfig-common.mk b/BoardConfig-common.mk
index d6156557..2ddc193e 100644
--- a/BoardConfig-common.mk
+++ b/BoardConfig-common.mk
@@ -39,6 +39,7 @@ BOARD_KERNEL_CMDLINE += rcupdate.rcu_expedited=1 rcu_nocbs=all
 BOARD_KERNEL_CMDLINE += stack_depot_disable=off page_pinner=on
 BOARD_KERNEL_CMDLINE += swiotlb=1024
 BOARD_KERNEL_CMDLINE += cgroup.memory=nokmem
+BOARD_KERNEL_CMDLINE += sysctl.kernel.sched_pelt_multiplier=4
 ifeq (,$(filter %_fullmte,$(TARGET_PRODUCT)))
 BOARD_KERNEL_CMDLINE += kasan=off
 endif
diff --git a/conf/init.zuma.rc b/conf/init.zuma.rc
index c419a3dc..75e8fe81 100644
--- a/conf/init.zuma.rc
+++ b/conf/init.zuma.rc
@@ -4,6 +4,7 @@ import init.exynos.sensorhub.rc
 
 on early-init
     mount_all /vendor/etc/fstab.persist --early
+    write /proc/sys/kernel/sched_pelt_multiplier 1
 
 on init
     # CPU0 cannot be offline

From 5f975896d4cc95dc6948a7fda727b45838e44fbb Mon Sep 17 00:00:00 2001
From: Tim Murray <timmurray@google.com>
Date: Mon, 26 Jun 2023 17:26:13 -0700
Subject: [PATCH 2/2] zuma: tweak memory management

- set lmkd's swap_free_low_percentage to 100
- decrease swappiness to 60

Test: boots with correct settings
Bug: 288432219
Change-Id: Ie9fc39b03b25ee231190e12e312485794d0f8686
---
 conf/init.zuma.rc | 2 +-
 device.mk         | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/conf/init.zuma.rc b/conf/init.zuma.rc
index c419a3dc..83be9364 100644
--- a/conf/init.zuma.rc
+++ b/conf/init.zuma.rc
@@ -752,7 +752,7 @@ on property:sys.boot_completed=1
 
     # Enable ZRAM on boot_complete
     swapon_all /vendor/etc/fstab.${ro.board.platform}
-    write /proc/sys/vm/swappiness 100
+    write /proc/sys/vm/swappiness 60
 
     # Adjust watermark level
     write /proc/sys/vm/watermark_scale_factor 200
diff --git a/device.mk b/device.mk
index 636c43e3..76a12312 100644
--- a/device.mk
+++ b/device.mk
@@ -1139,6 +1139,10 @@ PRODUCT_VENDOR_PROPERTIES += ro.crypto.metadata_init_delete_all_keys.enabled?=tr
 PRODUCT_PROPERTY_OVERRIDES += \
     ro.crypto.volume.options=aes-256-xts:aes-256-hctr2
 
+# Increase lmkd aggressiveness
+PRODUCT_PROPERTY_OVERRIDES += \
+    ro.lmk.swap_free_low_percentage=100
+
 # Hardware Info Collection
 include hardware/google/pixel/HardwareInfo/HardwareInfo.mk