Just browsing around and find this kernel in a German forum….

FROM ORIGINAL THREAD: 

Of course I have the kernel tested, and my phone still works thanks at this point to my friend superdragonpt ( superdragonpt – Recognized Developer / Recognized Contributor – Lisbon, Portugal – XDA Forum ), which has contributed more than half to the current kernel. I would like to emphasize at this point again that it charge the phone from us ( Jiayu Germany – The official German online shop ). was made ​​available to exactly such projects as this to realize here For this reason, the following releases are zunächt exclusively our customers are available. I hope this is understandable. Update (04/05/2015): I have the whole slightly covered, and today I have an app written for the kernel, the only phones with works of our Rome. Thus, the kernel remains (for now) accessible to everyone, only to the Kompfort the app to buyers from other shops (for now) without. We will now let's see how this is so accepted, and then decide how to handle the future.The app itself should be self-explanatory If you have questions, just out with it. But now to the kernel itself, changes to the standard kernel:. 

changes 16/05/2015:
 

• Smartwake / proximity sensor control: The proximity sensor is only briefly to check now activated the status
• ZRAM: the work when (de) compress the swap memory is now spread over up to 8 cores, instead of using only one (much faster)
• ZRAM: As a compression algorithm is now LZ4 instead lzo used because LZ4 is much faster, but almost as good compresses 
  both ZRAM patches come from Piotr Sarna.
• Noatime and nodiratime as standard mount options
• Interactive + and hotplug governor added (superdragonpt, hotplug might still be a bit unstable)
• Compiler options according to our hardware (Cortex A-53) adjusted (superdragonpt)
• WiFi : CFG_SDIO_RX_ENHANCE activated (superdragonpt)
• deactivated testweise ASMP drivers since Core pilot is already in use by default
• I hope I have not forgotten to mention

Changes 05/13/2015:
New JiayuControl app :

• Added Smartwake / proximity sensor control
• CPU Tab unlocked (is a little choppy; the tab, not the phone)

Changes 11/05/2015: 
Smartwake test .

Currently no support in the app (no time ). 
For De / activating a 0 or 1 to write to the file. Change is not retained after reboot!

sys / kernel / smartwake_control / check_proximity

Changes 05/09/2015:

• Installed key backlight control.
• JiayuControl_0.2.0. apk (to be able to control the new feature)

Changes 05/08/2015:
Test Release:

• The soft buttons remain at now, as long as the display is on.

Changes 05/07/2015:

• NFC gefixet
• VFS: Reduce Cache (This results in a less frequent use of swap and saves CPU power)

Changes 04/05/2015:

• Enable low bandwith Application Transition animation (support low bandwith Application Transition animation. For some project HW power does not enough, it can enhance application transition animation FPS, superdragonpt)
• more free memory by disabling unnecessary logging processes (superdragonpt)
• ASMP driver added and aktivert ("Multi-core automatic hotplug support" -distributed individual tasks over multiple cores away or turn off individual cores, superdragonpt)
• Vibration driver optimizes (Vibration duration adjustable)

Changes of first publication:

• Improved memory management
• Battery life only every check 15sec, held every 10 sec
• Activated "Enhance Hardware Composer" option
• ExFAT support (not yet complete)
• unnecessary logging removed (for better battery performance)
• Thunder Quake engine (from VarunChitre15, I ported for Jiayu (s3)