[KERNEL][CM11][Linaro] Unofficial SlimKat Kernel [20140413] - Sony Xperia Z Ultra

UNOFFICIAL SlimKat Kernel for Xperia Z Ultra​
This is a port for the Xperia Z Ultra of the SlimKat Kernel, from their original Xperia Z1 sources at GitHub. No features have been added or removed, I've just made the necessary changes for it to run on the Xperia Z Ultra. This is ONLY for CM11-based firmwares (I tested only with Carbon Rom 4.4.2).
This is not my original work! I've just ported and compiled it for the Z Ultra, so please also thank the original creators (see "Credits" below)! Also, avoid reaching them directly for any issues you may find in this build, since it's UNOFFICIAL and they may not be able to provide support. Post here in this thread instead.
Features:
TCP Congestion Algorithms: westwood, reno, bic, cubic, htcp, vegas
I/O Schedulers: noop, deadline, row, cfq, sio, fiops, bfq
Faux Sound
Compiled using Linaro GCC 4.8.2 with optimizations (-O2, -mcpu, -mtune etc.)
And all the standard CM11 kernel features
Credits:
@prbassplayer - original work for the Xperia Z1 (here), and for letting me port it to the Xperia ZU
SlimRoms Team - for their work on SlimKat ROM and Kernel (here)
@Androguide.fr - for helping me on my first attempt to build a CM-based kernel (while trying to port his Pimped Kernel for Z1; still on my list!), and I also borrowed his updater-script
Download:
Version 20140413 - XDA
Version 20140407 - XDA
Version 20140328 - Mega or XDA
Changelog:
Latest commits on GitHub.
Starting on 20140413:
Removed debug symbols from kernel.
Compiled with SaberMod toolchain 4.8.3.
Added camera patches from faux123, hopefully they will solve or minimize the camera freeze issue.
Notes:
Always make a backup of your /system directory, in case you want to return to your previous kernel (flash it first, then restore the backup)
XDA:DevDB Information
SlimKat Kernel for Xperia Z Ultra, a Kernel for the Sony Xperia Z Ultra
Contributors
dbolivar, prbassplayer, SlimRoms Team
Kernel Special Features: Additional TCP Congestion Algorithms, I/O Schedulers, Faux Sound, Linaro Optimizations
Version Information
Status: Beta
Current Beta Version: 20140413
Beta Release Date: 2014-03-28
Created 2014-03-28
Last Updated 2014-04-13

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Have you tried it with my build of Carbon? I have run slimkat's kernel on my carbon several times without issue.
If this is fully working i'll link to it from my build thread.
I've also been looking into building carbon with the above slim/saber tweaks
Sent from my Xperia Z Ultra using Tapatalk

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blueether said:
Have you tried it with my build of Carbon? I have run slimkat's kernel on my carbon several times without issue.
If this is fully working i'll link to it from my build thread.
I've also been looking into building carbon with the above slim/saber tweaks
Click to expand...
Click to collapse
Running it exactly with your Carbon build, my friend. Working like a charm.
Regarding the tweaks, are you talking about the Linaro optimizations? If yes, you can just "trick" the CM build system by copying the Linaro toolchain over the default toolchain CM is using (or symlink the dir). I did that for the kernel and it worked normally, but of course had to use the tweaked Makefile with the optimizations and adjustments of the warning flags. These optimizations I think are enough:
Code:
-munaligned-access -fgcse-lm -fgcse-sm -fsched-spec-load -fforce-addr -ffast-math -fsingle-precision-constant -mcpu=cortex-a15 -mtune=cortex-a15 -marm -mfpu=neon -ftree-vectorize -mvectorize-with-neon-quad -funroll-loops
But I don't know how to adjust the CM Makefiles except for the kernel. Do you know how to do that? I'm in the process of learning how to build a ROM, and would love to know these tricks beyond the standard ". build/envsetup.sh; breakfast ...; etc.".

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Thanks for this @dbolivar
Sent from my Xperia Z Ultra using Tapatalk

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Sweet! Thanks!
Sent from my C6833 using Tapatalk

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Thanks dude

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thanks dbolivar. Can you include TWRP recovery with this..that would be a nice addition-maybe not dual boot if too much of a task but another one with the TWRP recovery, if you can.

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Just had a sod. Anyone else experienced this?
Sent from my Xperia Z Ultra using Tapatalk
---------- Post added at 10:30 AM ---------- Previous post was at 09:59 AM ----------
I think I had the sod because of me changing governor to ondemand. I'll keep it on interactive and I'll report back.
Sent from my Xperia Z Ultra using Tapatalk

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pemell said:
Just had a sod. Anyone else experienced this?
Click to expand...
Click to collapse
It is very possible you experimented a SoD with this kernel, since the recent fixes the CM team implemented have not yet been merged in SlimKat's kernel. As soon as they do that, I'll create a new build here.

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can you add F2FS support ?
Because F2FS clearly provides better performance than ext4.

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MEGAX91 said:
can you add F2FS support ?
Because F2FS clearly provides better performance than ext4.
Click to expand...
Click to collapse
This would be very useful!
Sent with my Xiaomi MI2 with Tapatalk Pro

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MEGAX91 said:
can you add F2FS support ?
Because F2FS clearly provides better performance than ext4.
Click to expand...
Click to collapse
Sorry guys, but I don't plan to add / change / remove any features to this kernel, because then it won't be SlimKat's Kernel anymore. However, I may in the future port other kernels with F2FS, or build my own.

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dbolivar said:
Sorry guys, but I don't plan to add / change / remove any features to this kernel, because then it won't be SlimKat's Kernel anymore. However, I may in the future port other kernels with F2FS, or build my own.
Click to expand...
Click to collapse
thanks man
i think Pimped Kernel or Doom Kernel would be best options.

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MEGAX91 said:
thanks man
i think Pimped Kernel or Domm Kernle would be best options.
Click to expand...
Click to collapse
Yes, in fact I've been trying to port Pimped Kernel for a few days, but it always bootloops on the ZU. I need more time to investigate. DoomKernel I plan to work when (if) I return to stock someday, since currently I'm using CM11-based firmwares, but stay tuned...

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the kernel does not want to boot on the latest cm-11-20140404-NIGHTLY-togari.zip
The SONY boot logo shows up and stays a long time, purple light comes on and off. Then it moves on to a blank black nothing..
Kernel worked fine on cm-11-20140330-NIGHTLY-togari.zip ...darn now it wont boot at all Fuuuuu!!!
Oh I see whats going on: http://www.cmxlog.com/11/togari/ every old nightly changelog has been removed before mars 31, went back to cm-11-20140330-NIGHTLY-togari.zip as my phone didn't boot at all with the new nightly.
I will wipe the phone clean tomorrow and try again, can't mess with my phone now as I'm leaving early in the morning

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New version 20140407
New version 20140407 released. Changelog in the OP. Enjoy.

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Can anyone confirm if camera is working as it should?

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pemell said:
Can anyone confirm if camera is working as it should?
Click to expand...
Click to collapse
I think the camera issue is ROM-related, not kernel (but not 100% sure). Anyway, I'm still getting the initial freeze when opening the camera. My workaround for it is: immediately after boot, open the camera. It should open normally after a short initial freeze (just wait). After that, it continues to work until next reboot, when you can just redo these steps. I noticed that if I don't open the camera immediately after boot, the chances for a "permanent" freeze with subsequent "can't connect to camera" message (solvable only by rebooting) are higher.

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The kernel isn´t working with CM11 for me. The process com.androidphone has stopped.
Solutions?

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Flashed 0407 and got stuck on Sony logo. I'm on carbon 0329
Sent using C6833 - Carbon KitKat