From 87bf601c9cd6c55b45a1c00f0b61aab37e1de077 Mon Sep 17 00:00:00 2001
From: Ocean Chen <oceanchen@google.com>
Date: Wed, 4 Sep 2024 16:00:25 +0800
Subject: [PATCH] Switch from the BFQ to the mq-deadline I/O scheduler

The mq-deadline I/O scheduler is more stable than BFQ. Additionally, the
boot time is shorter with the mq-deadline I/O scheduler. It only changes the scheduler on new kernel.

Bug: 186902601
Test: forrest build

Change-Id: I51605b32afb4340d416fe4923570bb3f4af24ab8
Signed-off-by: Ocean Chen <oceanchen@google.com>
---
 conf/init.zuma.rc                 | 5 +----
 device.mk                         | 8 ++++++++
 storage/5.15/init.zuma.storage.rc | 3 +++
 storage/6.1/init.zuma.storage.rc  | 2 ++
 4 files changed, 14 insertions(+), 4 deletions(-)
 create mode 100644 storage/5.15/init.zuma.storage.rc
 create mode 100644 storage/6.1/init.zuma.storage.rc

diff --git a/conf/init.zuma.rc b/conf/init.zuma.rc
index f0cbf01c..dfa42b3e 100644
--- a/conf/init.zuma.rc
+++ b/conf/init.zuma.rc
@@ -1,3 +1,4 @@
+import /vendor/etc/init/hw/init.zuma.storage.rc
 import /vendor/etc/init/hw/init.zuma.usb.rc
 import android.hardware.drm@1.2-service.widevine.rc
 import init.exynos.sensorhub.rc
@@ -15,10 +16,6 @@ on init
     # Disable util-awareness for mids and bigs
     write /proc/vendor_sched/teo_util_threshold "2 1024 1024"
 
-    # Boot time fs tuning
-    write /sys/block/sda/queue/scheduler bfq
-    write /sys/block/sda/queue/iosched/slice_idle 0
-
     chown system system /proc/vendor_sched/groups/bg/set_task_group
     chown system system /proc/vendor_sched/groups/cam/set_task_group
     chown system system /proc/vendor_sched/groups/fg/set_task_group
diff --git a/device.mk b/device.mk
index 542fdc9e..e31c0d39 100644
--- a/device.mk
+++ b/device.mk
@@ -380,6 +380,14 @@ PRODUCT_COPY_FILES += \
 	device/google/zuma/conf/init.freq.userdebug.rc:$(TARGET_COPY_OUT_VENDOR)/etc/init/init.freq.userdebug.rc
 endif
 
+ifneq (,$(filter 5.%, $(TARGET_LINUX_KERNEL_VERSION)))
+PRODUCT_COPY_FILES += \
+	device/google/zuma/storage/5.15/init.zuma.storage.rc:$(TARGET_COPY_OUT_VENDOR)/etc/init/hw/init.zuma.storage.rc
+else
+PRODUCT_COPY_FILES += \
+	device/google/zuma/storage/6.1/init.zuma.storage.rc:$(TARGET_COPY_OUT_VENDOR)/etc/init/hw/init.zuma.storage.rc
+endif
+
 # Recovery files
 PRODUCT_COPY_FILES += \
 	device/google/zuma/conf/init.recovery.device.rc:$(TARGET_COPY_OUT_RECOVERY)/root/init.recovery.zuma.rc
diff --git a/storage/5.15/init.zuma.storage.rc b/storage/5.15/init.zuma.storage.rc
new file mode 100644
index 00000000..7df260de
--- /dev/null
+++ b/storage/5.15/init.zuma.storage.rc
@@ -0,0 +1,3 @@
+on init
+    write /sys/block/sda/queue/scheduler bfq
+    write /sys/block/sda/queue/iosched/slice_idle 0
\ No newline at end of file
diff --git a/storage/6.1/init.zuma.storage.rc b/storage/6.1/init.zuma.storage.rc
new file mode 100644
index 00000000..3d88bb69
--- /dev/null
+++ b/storage/6.1/init.zuma.storage.rc
@@ -0,0 +1,2 @@
+on init
+    write /sys/block/sda/queue/scheduler mq-deadline
\ No newline at end of file