gs101: tweak memory management

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

This tweak also aligns the policy with P23.

Test: boots with correct settings
Bug: 299975853
Change-Id: I0ed7088ddf2ff2fa0feca2197e5cc03c7f5c6778
Signed-off-by: Martin Liu <liumartin@google.com>

conf/init.gs101.rc

@@ -717,7 +717,7 @@ 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
 
     # Force empty CMA
     write /sys/kernel/vendor_mm/cma/farawimg/force_empty 1

device.mk

@@ -1131,5 +1131,9 @@ PRODUCT_PROPERTY_OVERRIDES += \
 # Call deleteAllKeys if vold detects a factory reset
 PRODUCT_VENDOR_PROPERTIES += ro.crypto.metadata_init_delete_all_keys.enabled=true
 
+# Increase lmkd aggressiveness
+PRODUCT_PROPERTY_OVERRIDES += \
+    ro.lmk.swap_free_low_percentage=100
+
 # Hardware Info Collection
 include hardware/google/pixel/HardwareInfo/HardwareInfo.mk