From 91e531936235924cbb52368a27327adc008c89d5 Mon Sep 17 00:00:00 2001
From: Wei Wang <wvw@google.com>
Date: Wed, 17 May 2017 15:01:05 -0700
Subject: [PATCH] sanders: Tune zram performance

* Set page-cluster to 0 as the incremental cost of reading 1 page at a
time is negligible for zram

Change-Id: Ia73d08904551dfc8d57268fc4da3f9f34d10e277
Signed-off-by: Davide Garberi <dade.garberi@gmail.com>
---
 rootdir/etc/init.qcom.rc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/rootdir/etc/init.qcom.rc b/rootdir/etc/init.qcom.rc
index a6e5287..a140ff9 100644
--- a/rootdir/etc/init.qcom.rc
+++ b/rootdir/etc/init.qcom.rc
@@ -41,6 +41,10 @@ on early-init
     chown root system /dev/kmsg
     chmod 0620 /dev/kmsg
 
+    # ZRAM setup
+    write /sys/block/zram0/comp_algorithm lz4
+    write /proc/sys/vm/page-cluster 0
+
 on fs
     wait /dev/block/platform/soc/${ro.boot.bootdevice}
     symlink /dev/block/platform/soc/${ro.boot.bootdevice} /dev/block/bootdevice