Evolution-X-Tensor/device_google_zuma
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Switch from the BFQ to the mq-deadline I/O scheduler

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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>
This commit is contained in:
Ocean Chen 2024-09-04 16:00:25 +08:00
parent 2720a57023
commit 87bf601c9c
4 changed files with 14 additions and 4 deletions
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5
conf/init.zuma.rc
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@ -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

8
device.mk
View file

@ -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

3
storage/5.15/init.zuma.storage.rc Normal file
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@ -0,0 +1,3 @@
on init
write /sys/block/sda/queue/scheduler bfq
write /sys/block/sda/queue/iosched/slice_idle 0

2
storage/6.1/init.zuma.storage.rc Normal file
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@ -0,0 +1,2 @@
on init
write /sys/block/sda/queue/scheduler mq-deadline