[Samsung Galaxy J5 (2015) ROMs, Kernels, Recoveries] Koloses:
Your warranty is now void.
I'm 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
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.

So here it is. After testing for a few days I've decided to give out builds of CM 12.1 kernel with a little bit better CPU management.You may see improvement especially when you're not using 3G/LTE as it seems to drain battery almost as fast as before (depending on the use ofc). You'll get much better battery life on wifi though. You may tweak the settings using some kernel control apps but the recommended setup is already applied.

Features:

+ Bricked hotplug driver - turns off CPU cores if the CPU load is not big enough to need them.

+ Powersuspend - a driver that should turn off unused hardware components when screen is off

+ Quickwakeup driver - it allows some tasks to wake up the system to perform certain actions without fully resuming it

+ Min. CPU freq 200MHz (CM12.1 has it set to 800MHz but it seems we don't need it that high after disabling CRC checks)

+ Revised interactive governor target_loads to clock CPU more efficiently

Download:

Kernel:

CM12.1:

J500FN

J500F

J500G

J500H

J500M

J500Y

J5008

CM13:

J500FN

J500F

LOS14.1:

J500FN

J500F

J500H

J5008

GPU Max Frequency Limiting Scripts:

400 Mhz

475 Mhz

550 Mhz

650 Mhz

Installation:

Just flash the zip for your device in TWRP.

Changelog:

07.10.2017:
- First release rebased on @vince2678 kernel source and device trees (Will work only with his Los14.1 builds from now on, don't even try any older ROMs available)
- Added some tweaks by @Bulgaricus

24.07.2017:
- Rebased on newest LOS kernel
- Reimplemented some of tweaks previously reverted due to conflict (The most important being Display driver update, refresh rate should be better now)

30.05.2017:
- Merged upstream changes (new power hal compability etc.)

19.05.2017:
- Merged base kernel updates
- Enabled thermal core control
- Change throttling cpu temperature from 60°C to 80°C to avoid performance loss
- Enabled CPU_BOOST config
- Kernel now should boot on both LL and MM bootloaders (needs testing)

18.05.2017:
- First release for Lineage OS 14.1
- Rebased on @SoUnd001 kernel source (LOS 14.1 only)
- Drop CM1300/LOS13.0 support

02.03.2017:
- Fixed slow charging
- Cpusets tweaks for hotplug (multitasking related)

25.01.2017:
- Squashed update to 3.10.104
- Additional CPU & Battery tweaks
- Faster boot

16.01.2017:
- Major cleanup
- Tweaked recommended values
- Final release for CM12.1
- First release for CM13.0

08.01.2017:
- Added GPU OC up to 720MHz (you may change max frequency if you don't like OC or want it to be a little less thanks to the scripts included in downloads. Previous default freq was 400 MHz)
- Changed default gpu governor to simple_ondemand to avoid frequency bug described in #16

06.01.2017
- Initial release
- Added bricked hotplug driver
- Added powersuspend driver
- Added quickwakeup driver
- Changed CPU min freq. to 200MHz instead of 800MHz
- Optimized interactive's target_load

XDA:DevDB Information

Hotplug enabled kernel for Cyanogenmod 12.1/13.0, LOS 14.1, Kernel for the Samsung Galaxy J5

Contributors

Koloses, Nick Verse, ganesh varma, #Henkate, SoUnd001, vince2678, Bulgaricus

Source Code: https://github.com/hotplugj5

Kernel Special Features:

Version Information

Status: Stable

Created 2017-01-06

Last Updated 2017-10-07