[KERNEL] [OOS] Omega Kernel OOS11 [April 19, 2021]

[kristofpetho]

Introduction

Hello everyone, this is my personal kernel for the OnePlus 8 Pro, will use it as my daily driver as soon as I get the device! (hopefully very early next week)
My philosophy on the kernel is pretty simple, intended to replace the stock kernel, but with a lot of under-the-hood tweaks.

Hopefully you will all enjoy!

Important thread information!

I refuse to acknowledge/respond to bug reports that do not include clear steps to reproduce, a logcat, and a console ramoops (if random rebooting) or a dmesg (any other issues). Follow this guide to do this.
Keep things civil, no flaming in the forums!

Features

• Up to date with OxygenOS 11 source
• Compiled with Google's Clang toolchain for maximum stability, with all warnings and errors fixed
• Compiled with Clang's cortex-a55 optimizations
• Many tweaks under the hood for smoother UX, lower battery drain, etc.
• Westwood as the default congestion algorithm
• Includes WireGuard
• Includes KCAL support
• Available to flash with AnyKernel3

Latest kernel release on GitHub

LINK

Source

Omega GitHub: https://github.com/kristofpetho/kernel_oneplus_sm8250
Omega originally sourced from: OnePlusOSS

Thanks where it's due

Nathan Chance for his guidance and patience with general kernel dev questions
Kerneltoast for his extreme patience and guidance
freak07 for his dtb advice
tbalden for figuring out the 8 Pro boot issues
zoman7663 for testing
osm0sis (for AnyKernel3)

 

[kristofpetho]

Releases

April 19 - download HERE
- Fixed bootloop issue

April 16 - download HERE
- Updated Clang to Google's latest
- Disable coresight clocks when not used (better battery drain)
- Pulled back the two fixes for network driver that previously fixed random reboots (apologies, don't know how I didn't have those in latest...)

March 23 - download HERE
- Cleaned out older commits (stability)
- Updated Google's Clang toolchain to 12.0.4 (latest)
- Fixed a GPU bug where the UI might jitter a bit (smoothness)

March 16 - download HERE
- Enabled a new set of Clang compilation diagnostics, and fixed them with the help of CAF, who started fixing them in their 5.4.y kernels (7 coding errors)
- Fixed a similar issue in the qseecom driver that didn't show up in diagnostics
- Fixed a potential resourcing error in the mhi bus driver

March 13 - download HERE
- Reverted all CAF patches to fix hiccups observed in UI
- Kept 1 USB driver patch to fix faulty transfer of big files
- Kept 2 network driver patches to address random reboots previously observed

March 10 - download HERE
- Reverted all CAF patches from the kernel
- Added back only critical fixes that (hopefully) do apply to our use case (not did add back any "nice-to-have" patches)

March 4 - download HERE
- Pulled in some critical bugfixes from CAF:
- 3 UFS file system fixes
- 1 F2FS fix
- 1 memory allocation fix
- 3 wireless driver fixes
- 1 more USB transfer fix
- 4 GPU/video driver fixes
- Updated Anykernel3 to latest version
- Built with Google's Clang 12.0.3 (I save ~1 minute every time I do a build, which adds up)

February 26 - download HERE
- Switched back to LLVM's Clang 11.1.0 branch for stability reasons
- Updated Wireguard to latest version
- Potential fix for some random reboots a few users were seeing (reverted two smoothness commits)
- Fixed a major code error in OnePlus's source code
- Potential fix for CPU's min frequencies sticking in some situations

February 22 - download HERE
- Updated Wireguard to latest v1.0.20210219
- Removed more debugging from GPU driver for smoothness
- Updated compiler to Google's Clang 12.0.3

February 14 - download from HERE
- Reverted "Removed 3 performance loggers/debuggers from the kernel" to fix media playback issue

February 11 - download from HERE
- Heavy kernel cleanup, removed a lot of commits that either did nothing, or even reduced performance
- Reverted to using userspace, Oneplus-supplied WiFi driver (improved battery life)
- Fixed some previous ugly code fixes I had in the kernel
- Enabled Clang's detection of code formatting errors, and fixed all of them
- Removed 3 performance loggers/debuggers from the kernel

January 25 - download from HERE
- Switched back to Google's Clang 12.0.2 for compiling (much faster to compile)
- Updated WireGuard to latest version
- Fixed some coding errors caught by Clang after turning on some additional diagnostics

January 20 - download from HERE
- Switched from Google's Clang 12 compiler to stable LLVM Clang 11.0.1 (custom built)
- Removed all debugging from the camera driver (it will not kill the battery if you use the camera a lot)
- Removed some overbearing debugging from the video/media driver
- Removed debugging from the Oneplus priximity driver
- Fixed coding errors found by a run of GCC compiler (there were 2-3 major errors in the code that Clang didn't catch)
- Added WLAN driver to the kernel (using the same 5.2.022.3E driver that Oneplus is using)
- Removed a ton of debugging from the WLAN driver, and fixed some code errors
- Added RMNET driver to the kernel (version parity with the WLAN driver)
- Removed external module support from the kernel, since all modules now reside in the kernel

January 14 - download from HERE
- Adjusted kernel configuration to reflect the addition of a new Oneplus kernel module in OOS 11.0.3.3
- Added back a debugger that is needed by Oneplus's userspace
- Removed some harmless kernel loggers
- Further code fixes in the kernel
- Updated to Google's new Clang 12.0.1 compiler to compile the kernel


December 22
- Back to using binutils (from LLVM tools) - I experienced nav bar graphical glitches with LLVM tools
- Pulled in a few tweaks from Sultan's new redbull kernel - optimized graphics driver, optimized power usage, optimized smoothness
- Updated Wireguard to latest version
- Updated Anykernel3 to latest version

December 13
- Reverted all CAF patches... let's assume Oneplus actually knows what they are doing
- Compiled with advanced LLVM tools
- Reverted a commit that is not needed for LLVM, but was needed for latest binutils (which we are now not using)

December 4
- Added a few fixes from CAF upstream
- Cleaned up unneeded commits
- Removed bad commits
- Removed more logging (that are safe to remove)

November 24
- Refactored some commits for easier later patching
- Finally using UFS 3.0 driver that's meant for the OnePlus 8 Pro

November 20
- Fixed battery drain issue that was on previous release (apologies for that)

November 16
- General stability improvements
- Slightly improved active as well as idle battery drain
- Updated WireGuard to latest version

November 6
- Removed a major debug from the kernel that is also missing on stock kernel (sources were not updated by Oneplus...)
- Reverted to using O2 optimization level from O3, for stability reasons
- Reverted modified CPUsets, the overall experience is much smoother this way, with no discernible effect on battery life

October 23
- Reverted the two Google commits since those seemed to increase active drain just a bit
- Pulled in latest Oneplus kernel source for OOS 11.0.1.1

October 19
- Reverted the CAF upstream - Oneplus does extensive testing on the CAF base they are using and it also resulted in significantly higher active as well as idle drain upon further testing
- Using stock (userspace) WLAN and RMNET drivers
- Pulled in two commits from Google's 4.19.y kernel tree for increased smoothness (scheduling, write delay)
- Fixed a additional code error found through Clang

October 10
First release for Android 11-based OOS11.
Changelog vs stock kernel:
- Compiled with latest Google Clang 11.0.5
- All the tweaks pulled in from Omega OOS10 kernel
- Added in KCAL color control
- Upstreamed the entire kernel to CAF release LA.UM.9.12.r1-08300-SMxx50.0
- Included both WLAN and RMNET drivers with CAF release LA.UM.9.12.r1-08300-SMxx50.0

 

[kristofpetho]

Philosophy

- The kernel will always be up-to-date with OnePlusOSS sources
- No additional functionality, only stock
- Only code fixes, code optimizations, and minor tweaks to keep it 100% stable
- Only logging and debugging will be removed

 

[Gordietm]

I can flash this with EX kernel manager?

Sent from my OnePlus 8 Pro using XDA Labs

 

[kristofpetho]

I can flash this with EX kernel manager?

Sent from my OnePlus 8 Pro using XDA Labs

See post 2. And yes, EXKM is also my kernel flasher of choice.

 

[efex]

Happy to see you here, used your kernel on the 6T also Flashed and all seems to be good!

 

[cultofluna]

Welcome buddy
One of the most popular kernels for the OP6T...
Also for the 8pro ..

 

[galaxys]

Nice to see here! Kudo's

 

[Gordietm]

Will I lose root when I flash it?

Sent from my OnePlus 8 Pro using XDA Labs

 

[Burt Squirtz]

May 9 - First release
- It boots! YAY
- Built with Clang 10.0.0 stable, polly and cortex-a55 optimization
- Few initial tweaks, some minor debugging removed

Any possible way you could try to compile a clang 11 build by chance?

 

[OPOmaniac]

Is it possible to add some kinda touch input boost? Screen sometimes feel sluggish..slow..typing is difficult.

 

[kristofpetho]

Any possible way you could try to compile a clang 11 build by chance?

My preference is stable Clang, unless you give me a good reason to use Clang 11.

Is it possible to add some kinda touch input boost? Screen sometimes feel sluggish..slow..typing is difficult.

No. See post #3. BUT -> when I finish the tweaks, it will be much smoother than stock.

 

[kristofpetho]

Will I lose root when I flash it?

Sent from my OnePlus 8 Pro using XDA Labs

No you will not, AnyKernel3 will preserve root.

 

[golf60]

No you will not, AnyKernel3 will preserve root.

Will this kernel be able to use normal update of the original Oneplus firmware through the system? Download with oxygen updater and flashing through local update.

 

[marko94]

Will this kernel be able to use normal update of the original Oneplus firmware through the system? Download with oxygen updater and flashing through local update.

Sure, but you will need to reflash kernel again after the update

 

[golf60]

Sure, but you will need to reflash kernel again after the update

That's great.

 

[Gordietm]

So flashed the kernel with EX Kernel Manager. Everything works great and still rooted.
Thanks for your work!

Do you recommend to keep Ram Boost still enabled?

Sent from my OnePlus 8 Pro using XDA Labs

 

[kristofpetho]

So flashed the kernel with EX Kernel Manager. Everything works great and still rooted.
Thanks for your work!

Do you recommend to keep Ram Boost still enabled?

Sent from my OnePlus 8 Pro using XDA Labs

Up to you. I personally have it turned off on my 6T currently.

 

[OPOmaniac]

Flashed! Lets see what is the hype about )) Cant wait for more updates!

EDIT. ok man, im after reboot and my phone feels MUCH faster! Like, scrolling is major improved. I did not expected.

 

[blaze9090]

Flashed! Lets see what is the hype about )) Cant wait for more updates!

EDIT. ok man, im after reboot and my phone feels MUCH faster! Like, scrolling is major improved. I did not expected.

That's always after reboot. I have the same problems with screen responsiveness as you. Seems like the phone needs some time to **** it up after rebooting ?

But who knows, let's hope I'm wrong!