[KERNEL] [Android 11/12] Dora kernel for OP7 series

[AnnoyingZlatan]

Introduction

Dora kernel is a successor of popular nem0 kernel for A10/A11 ROMs.
Dora Kernel is CAF based kernel aiming to provide great stability and performance while maxing out battery life!

// Your warranty is now void.
//
// I am not responsible for bricked devices, dead SD cards, thermonuclear war, or you getting fired because the alarm app failed.
// Please do some research if you have any concerns about features included in this Kernel before flashing it!
// YOU are choosing to make these modifications, and if you point the finger at me for messing up your device, I will laugh at you.

Main Features:
- Unified for OOS 11 and Android 11 Custom ROMs (Check with your maintainer if they have R blobs merged in)
- Based and upstreamed to latest CAF tags for the SD855
- Upstreamed to latest Linux-Stable
- Upstreamed to latest F2FS stable
- Compiled with Clang 13 and -O3 speed optimizations flags
- Compiled with Clang Polyhedral Loop Optimizations (Polly)
- Simple LMK driver from kerneltoast
- BBR2 TCP congestion algorithm
- 675 MHz GPU step
- Custom energy-freq scheduling model for maximizing performance and battery life
- Custom frequencies setup (dropping to CAF default minimums during idle)
- S2idle suspend mechanism with patches from Google P4/P5 kernels
- PELT scheduling mechanism
- Many scheduler backports from mainline and/or 4.19 Google kernel
- Zip made using latest AnyKernel3 release, retains root on flash (Stable Magisk 21.4 or higher reccommended)
- Zip flashable through EXKM/FKM/Smartpack/TWRP
- Integrated OTA updates in Franco's Kernel Manager *(link for the json: JSON)
- Many more features I don't remember right now, check source if you're interested or contact me on Telegram!

Bug reports:
- If you want to report a bug, please provide some sort of logs (logcat, dmesg)

Flashing instructions:
- Just flash it through TWRP or EX or Franco's Kernel Manager apps
- No sorts of configs needed, flash and be happy out of the box
-There are 2 versions per release: one with SDCARD_FS disabled (default) and one with it enabled. Motivation behind this is recent updates to AOSP 11 ROMs (Yaap, Derp, etc.) that have disabled the support for it. And even though that builds with SDCARD_FS could still work, it's not recommended.
So, in layman terms, if you are running OOS or any custom ROM that still hasn't followed the path of those custom ROMs, please use the sdcard-fs zip or update through OTA.

Downloads
Stable and Test builds: Google Drive

Kernel being actively tested in this group: Telegram

Donations
If you would like to keep this project going with more improvements, feel free to support it: PayPal


Thank you to:

@osm0sis for AnyKernel
@nathanchance for help with upstreams
@topjohnwu for Magisk
@idkwhoiam322, @KuranKaname for being good friends
@BobAzzon, @npv12, @Gabyrx7, @Reechings and rest of my dear friends that tested the kernel (really, wouldn't be possible without you guys <3)

Contributors
nem0 aka AnnoyingZlatan
Source Code: GitHub

Version Information
Status: Stable

Created 2021-05-01
Last Updated 2021-07-20

 

[AnnoyingZlatan]

Reserved

 

[AnnoyingZlatan]

Reserved #2

 

[Flawn]

really pru kernel, I like it
my sot tripled

jk, best kernel on here!

 

[muphetz]

Best kernel ever since Nemo,,now Dora,,congrat bro,,awesome kernel,,work perfect with new official PE rom,,,

 

[HueyT]

Best for A11 on OOS11 blobs and OOS11 !!!!

 

[Toutatis_]

Ex-nem0 Kernel user here, thank you so much @AnnoyingZlatan for this one

I've just installed 1.0 with adb sideload on latest PixelExperience, all good

 

[[email protected]]

Love ur kernel looking forward to help u testing hehe

 

[Zhuang zhuang]

Ex-nem0 Kernel user here, thank you so much @AnnoyingZlatan for this one

I've just installed 1.0 with adb sideload on latest PixelExperience, all good

I'd like to try it on YAAP, but I didn't know how to go back to stock kernel. I read somebody says to restore boot.img & dtbo but not sure how to do it

 

[Eddiemc]

I'd like to try it on YAAP, but I didn't know how to go back to stock kernel. I read somebody says to restore boot.img & dtbo but not sure how to do it

In Franko kernel manager you can make a backup of your current kernel. Then flash this, then restore kernel if you want it back.

Of fastbootd flash boot img from yaap, same as you most likely did when you originally installed it if you used that method. (Ps, make sure it's matching your ROM though, so you're not updated to the latest but flashing a boot image from a previous version..)

 

[bushninja07]

Currently using your Nemo kernel. I flashed this kernel via Franco's kernel manager but I get kicked back to my recovery..any ideas? Tia your kernels are awesome

 

[daniel84cs]

This kernel is awesome. With Dora Freq i've the best UI performance with AOSP like LOS/CrDroid , another world compared to OOS. Thanks Dev.

 

[AnnoyingZlatan]

Currently using your Nemo kernel. I flashed this kernel via Franco's kernel manager but I get kicked back to my recovery..any ideas? Tia your kernels are awesome

Yes, this is meant for OOS 11 and A11 ROMs that switched to R blobs, as it's stated in the OP. It won't be compatible with the builds you've run Nemo on

 

[imaGine00]

Amazing experience out of the box, super thanks !
tested with OP7 on oos 11.0.0.2


super smooth and really impressive battery

 

[Zhuang zhuang]

I flashed via FKM on YAAP. Everything started good but just few minutes ago, when the screen turned off, it didn't turn on again & auto reboot. I had it 2 times in just a couple of minutes

 

[Eddiemc]

I flashed via FKM on YAAP. Everything started good but just few minutes ago, when the screen turned off, it didn't turn on again & auto reboot. I had it 2 times in just a couple of minutes

Yaap has a built in logcat, perhaps check to see if there's any traces of the error. It might help Zlatan if you post that..

 

[Teso79]

I have OOS 11 and and currently using a custom kernel. Should I flash OOS 11 again before your kernel? Thanks in advance.

 

[AnnoyingZlatan]

I flashed via FKM on YAAP. Everything started good but just few minutes ago, when the screen turned off, it didn't turn on again & auto reboot. I had it 2 times in just a couple of minutes

I am aware of the issue. Will be fixed in next update, just a bit busy atm.

 

[AnnoyingZlatan]

I have OOS 11 and and currently using a custom kernel. Should I flash OOS 11 again before your kernel? Thanks in advance.

Nope, just flashing a kernel is enough.

 

[Jiangc]

I have tried this version of the kernel and it feels very good! But the memory of my phone is too small, I hope there will be swap space in the future. Does the developer have plans to add zram or zswap in the future?