[CLOSED]Okitavera's Kernel for Mi 9 SE - v8.4

okitavera · May 26, 2019

Intro
Okitavera's kernel is a custom kernel based on CAF Kernel with specific patches from Xiaomi.
Aims to provide stability, security, and other benefits from having a regular patches from Linux Stable, CAF, and Google.

Features

Merged patches from :
- Linux Stable currently on: v4.9.197
- Google's kernel common: android-4.9
- CAF specific fork for for Snapdragon 71*, currently on: LA.UM.7.8.r1-07100-SDM710.0
Dynamic SchedTune boost
BBR and Westwood TCP congestion-avoidance algorithm (optional)
Exposure Adjustment (DC Dimming)
AVB and SafetyNet bypassed
KCAL, KLapse, Vibration control, and Sound control
Check GitHub commits for more
TL;DR : The best custom karamel (arguable)

Compatibility (v8.4)

AOSP-based custom ROM (Pie)
MIUI 10 and 11 (Stable or Weekly. Pie, NOT THE Q)

Downloads
Zach said this link should be bigger and as you can see he's right

Installation

Backup your dtbo and boot partition.
Flash the kernel.zip file via twrp

Credits and Thanks to

Linus, The Linux Foundation, Google, CodeAurora, Xiaomi
arter97
celtare21
faust93
flar2
franciscofranco
kdrag0n
kerneltoast
krasCGQ
nathanchance
osm0sis
pengus77
RenderBroken
... and all of the contributors from commits and patches on my git

XDA:DevDB Information
Okitavera's Kernel, Kernel for the Xiaomi Mi 9 SE

Contributors
yuneharuka
Source Code: https://github.com/okitavera/msm-4.9-grus-okita

Kernel Special Features: Family friendly, no overclocked.

Version Information
Status: Stable
Current Stable Version: 8.4
Stable Release Date: 2019-10-19

Created 2019-05-26
Last Updated 2019-10-19

okitavera · May 26, 2019

Pinned posts

- FAQ -> https://xdaforums.com/showpost.php?p=79606850&postcount=3
- How to tune schedutil for your preferences -> https://xdaforums.com/showpost.php?p=80539943&postcount=620
- Tunable sysfs paths for DC-Dimming -> https://xdaforums.com/showpost.php?p=80120102&postcount=516

okitavera · May 26, 2019

FAQ (Fricking Asked Question)

Q : is this a battery-life or performance aware kernel ?
A : Neither of it, this kernel is focused on upstreaming and bug-fixing so it can be used on many ROM as much as possible. But well, sometimes I'm interested on some additional features and include it on this kernel.

Q : My phone is hot after installing this kernel!
A : next question please!

Q : When kramel update xdd ?
A : Whenever I want. fun project != ETA

Q : Can I talk about my probl..
A : PM will be ignored, Discuss the problem on this thread instead.

Q : Magisk user should flash it before or after installing this kernel ?
A : Starting from v2.5, you can flash magisk at anytime, it will be preserved.

Q : Please more battery backup sur
A : next.

Q : What is your app recommendation for tuning this kernel ?
A : I'm using EXKM, but you can use any other app. Oh wait, based on user report, Kernel Adiutor/SmartPack can't read the big cluster cpufreq table properly.

Q : I have some problem, what can I do for you to diagnose it ?
A : dmesg, logcat, and also any additional information would be helpful.

Blocked Requests
- Additional cpu governor or io-scheduler
- In-kernel wakelock blocker
- Any weird, unused, or stuff that likely makes the phone in a dangerous state like overclocking, undervolting, and so on.

ale.giordano · May 26, 2019

Thanks for your work.
It's compatible with xiaomi.eu rom?

okitavera · May 26, 2019

ale.giordano said:
Thanks for your work.
It's compatible with xiaomi.eu rom?

Yes. in fact, currently I'm using Xiaomi.eu ROM

But also don't forget to backup your boot and dtbo partition just in case you want to restore it back,
since this kernel uses dtbo from global stable to match the kernel source from Xiaomi.

denzel09 · May 26, 2019

What is the kernel version? Thank you

---------- Post added at 11:42 PM ---------- Previous post was at 11:38 PM ----------

A question. I see this: Optional : Flash Magisk Installer zip file after flashing the kernel

I always seen the dev Franco to say that Magisk must be flashed before flashing the kernel because Magisk can mess with ramdisk, etc.. I have done alwys in this way with Pocophone and Franco kernel.

okitavera · May 26, 2019

denzel09 said:
What is the kernel version? Thank you

---------- Post added at 11:42 PM ---------- Previous post was at 11:38 PM ----------

A question. I see this: Optional : Flash Magisk Installer zip file after flashing the kernel

I always seen the dev Franco to say that Magisk must be flashed before flashing the kernel because Magisk can mess with ramdisk, etc.. I have done alwys in this way with Pocophone and Franco kernel.

it uses kernel 4.9.112 from MiCode with Merged CAF Tag LA.UM.7.8.r1-05600-SDM710.0

For the magisk situations,
I am using a customized AK2 installer for be able to flash kernel on a clean stock boot partition that doesn't have a ramdisk (yes, our boot partition doesn't have ramdisk on it) without needing to flash the magisk first.

So if you guys are not using magisk, just flash like a normal.
but if you're using Magisk, you can reflash magisk after installing or reinstalling the kernel

PeppeCNN · May 26, 2019

why backup of dtbo n boot?

bonbibonkers · May 26, 2019

Many thanks

)))(

okitavera · May 26, 2019

PeppeCNN said:
why backup of dtbo n boot?

Just in case you want to restore it back to the default rom.

This kernel is using stock global stable dtbo.
And if you try to use dtbo from a custom rom like Xiaomi.eu, it will breaks the camera drivers since the dt aren't compatible with the camera source that are released by xiaomi in their github (well, typical xiaomi's behaviour)

skyline91 · May 26, 2019

yuneharuka said:
Just in case you want to restore it back to the default rom.

This kernel is using stock global stable dtbo.
And if you try to use dtbo from a custom rom like Xiaomi.eu, it will breaks the camera drivers since the dt aren't compatible with the camera source that are released by xiaomi in their github (well, typical xiaomi's behaviour)

can you flash it from stock img via fastboot? or need to backup?

okitavera · May 26, 2019

skyline91 said:
can you flash it from stock img via fastboot? or need to backup?

Yeah, if you have those file (boot.img and dtbo.img, maybe extracting the ROM zip file),
you can re-flash it via fastboot like usual.

PeppeCNN · May 26, 2019

yuneharuka said:
Just in case you want to restore it back to the default rom.

This kernel is using stock global stable dtbo.
And if you try to use dtbo from a custom rom like Xiaomi.eu, it will breaks the camera drivers since the dt aren't compatible with the camera source that are released by xiaomi in their github (well, typical xiaomi's behaviour)

things that can be solved with a dirty flash anyway

right?

okitavera · May 26, 2019

PeppeCNN said:
things that can be solved with a dirty flash anyway
right?

exactly

PeppeCNN · May 27, 2019

is battery friendly or more aggressive ur kernel? how many sot have u?

Anyway....flashed, i hope that doesn't go in conflict lkt magisk module

rzki03 · May 27, 2019

i can see a bright future of this device from now ? thank you for the kernel ! ?

okitavera · May 27, 2019

PeppeCNN said:
is battery friendly or more aggressive ur kernel? how many sot have u?

Anyway....flashed, i hope that doesn't go in conflict lkt magisk module

it's pretty much balanced, with slightly boost on the io and cpu department.

I don't think SOT can presenting the actual of battery life since everyone has a different use case but well, here it is

bonbibonkers · May 27, 2019

hope this kernel had better standy drain than stock, will try it later

PeterImmel · May 27, 2019

I though we don't already have a twrp in which backup/restore is working?

okitavera · May 27, 2019

PeterImmel said:
I though we don't already have a twrp in which backup/restore is working?

I'm using TWRP by wzsx150, and it can do backup/restoring boot and dtbo partition.
But I don't know if it's ready for backup/restoring /data/ partition

[CLOSED]Okitavera's Kernel for Mi 9 SE - v8.4

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