Develop Bugs

[KERNEL][LU6200][OC/UV][3.0.79] Wind Kernel [CM10.1]

Wind Kernel for P930/SU640 (http://forum.xda-developers.com/showthread.php?t=2119976)
I am trying to make LU6200 support though I do not have LU6200.
Thanks tdmcode for the lu6200 initial cm kernel
BACKUP FIRST
USE AT YOUR OWN RISK
DISCLAIMER
Code:
*
* 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 ROM
* 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. Hard. A lot.
*/
DEVICE SUPPORT
LU6200(i_lgu)
FEATURES
Based on latest CM10.1 Kernel Source
Latest Linux Kernel 3.0.y source
CPU [email protected] MAX CLOCK 1.83Ghz
GPU [email protected]_320Mhz 2D 266Mhz
Undervolting Support(700mV-1400mV)
L2 Performace Boost
Smooth as Butter :]
Some tweaks, fixes
and something I missed (discover it ! )
Stable Version
CM10.1 - N/A
INSTALLATION INSTRUCTION
Copy *.zip to External SD card
Boot into Recovery Mode
Flash *.zip
Reboot and Enjoy it!
OPTIONAL
NANDROID BACKUP before flash
Wipe Cache/DalvikCache,Fix Permission after flash

DEFAULT SETTING
CPU 384Mhz-1512Mhz
Stock GPU FREQ [email protected] /[email protected]
Intellidemand + SIO
WIND KERNEL DEFAULT VOLTAGE
Code:
192000 775000
310500 775000
384000 775000
432000 800000
486000 800000
540000 825000
594000 825000
648000 850000
702000 850000
756000 875000
810000 875000
864000 900000
918000 900000
972000 900000
1026000 925000
1080000 950000
1134000 950000
1188000 975000
1242000 1000000
1296000 1025000
1350000 1050000
1404000 1075000
1458000 1075000
1512000 1100000
1566000 1125000
1620000 1150000
1674000 1175000
1728000 1200000
1782000 1225000
1836000 1275000
1890000 1325000
1944000 1350000
PERFORMANCE SETTING
Rom Settings -> Developer Options -> Windows Animation Scale,Transition Animation Scale -> 0.5x
Nova Launcher Settings -> Look and Feel -> Scroll Speed,Animation Speed -> Faster than light
use any system tools on Playstore ,set by your preference.
Example: To increase maximum GPU frequency in 3D mode to 320 MHz:
echo 320000000 > /sys/devices/platform/kgsl-3d0.0/kgsl/kgsl-3d0/max_gpuclk
Example: To increase maximum GPU frequency in 2D mode to 266 MHz:
echo 266667000 > /sys/devices/platform/kgsl-2d0.0/kgsl/kgsl-2d0/max_gpuclk
echo 266667000 > /sys/devices/platform/kgsl-2d1.1/kgsl/kgsl-2d1/max_gpuclk
Available frequencies:
3D: 320000000, 300000000, 266667000, 228571000, 200000000, 177778000, 27000000
2D: 266667000, 228571000, 200000000
Click to expand...
Click to collapse
Monitor MSM_MPDECISION
adb shell
su
cat /proc/kmsg | grep 'MPDEC'

CHANGELOG
JB - v2.1 (20 MAY)
tune some values(e.g. LCD voltage 3V->2.8V) according to leak 4.1 sourcecode
lower the max overclock freq to 1.83ghz
use original fix of stopping the bootanimation
Linux 3.0.79
Some patches & fixes ,check GITHUB for detail
JB - v1.9 (28 APR)
Screen off freq = 702Mhz
Disable msm_mpdecision and use Auto Hotplug by _thalamus
Kernel -O2 optimization (thats why file size larger)
Set tweaked ROW from franco.kernel by default
Logger driver update by stratosk
some misc backport,fixes
Linux 3.0.75
JB - v1.8 (15 APR)
Initial relealse - try1
Sync to su640,p930 wind kernel
For detail:
http://forum.xda-developers.com/showpost.php?p=37236229&postcount=3
BUG
CM10.1 BUGS
SOURCE
MY GITHUB
CREDITS
tdmcode (great works on our device)
rmcc (bring us CyanogenMod)
faux123 (msm8x60 kernel works, intellidemand etc.)
show-p1984 (kernel based decision, badass etc.)
edoko ( source inspiring me to start dev kernel)
altvolt74 ( introducing the kernel to xda )
Countless developers ( providing their awesome source codes)
ALL tester and developers contributing source

wao, thank you!
I'll test and give you feed back soon!

I'm ready
CM so good
Sent from my LG-LU6200 using xda premium

Thanks you vinamilk
Gửi từ LG-LU6200 của tôi bằng cách sử dụng Tapatalk 2

For try1, check
1. it can boot or not
2. if it can boot, will it force reboot when screen off

lyfkevin said:
For try1, check
1. it can boot or not
2. if it can boot, will it force reboot when screen off
Click to expand...
Click to collapse
1. Boot ok, OC 1836Mhz ok
Testing.......
Sent from my LG-LU6200 using xda premium

Chum.zuizui said:
1. Boot ok, OC 1836Mhz ok
Testing.......
Sent from my LG-LU6200 using xda premium
Click to expand...
Click to collapse
How is screen off.
Will it reboot everytimes screening off
Voltage table for overclocking is depending on device chip.
You may have to tune it by any systools or editing init.qcom.post_boot.sh (simply +25mV for each step)

hey.well,kernel worked

antutu benchmark check = 6400 .i don't know

oxiubx said:
antutu benchmark check = 6400 .i don't know
Click to expand...
Click to collapse
governor and cpu hotplug policy tweaked for battery and performace balance
Under default setting, cpu might not fullload during benchmark
if you want to benchmark, set governor: performance

lyfkevin said:
governor and cpu hotplug policy tweaked for battery and performace balance
Under default setting, cpu might not fullload during benchmark
if you want to benchmark, set governor: performance
Click to expand...
Click to collapse
Again with cpu 1k8

Hi, @lyfkevin!
how can i OC GPU? Can you give me some detail?
I notice that GPU performance is not good as ICS stock rom

hungnguyen490 said:
Hi, @lyfkevin!
how can i OC GPU? Can you give me some detail?
I notice that GPU performance is not good as ICS stock rom
Click to expand...
Click to collapse
check #2 post
also u can use
fauxclock, kernel tuner etc.

thank you!
if i want to oc gpu frequency in 3d, i have to do some steps like:
adb shell
su
cat /proc/kmsg | grep 'echo 320000000 > /sys/devices/platform/kgsl-3d0.0/kgsl/kgsl-3d0/max_gpuclk'
Right?

hungnguyen490 said:
thank you!
if i want to oc gpu frequency in 3d, i have to do some steps like:
adb shell
su
cat /proc/kmsg | grep 'echo 320000000 > /sys/devices/platform/kgsl-3d0.0/kgsl/kgsl-3d0/max_gpuclk'
Right?
Click to expand...
Click to collapse
adb shell
su
echo 320000000 > /sys/devices/platform/kgsl-3d0.0/kgsl/kgsl-3d0/max_gpuclk
or
put
echo 320000000 > /sys/devices/platform/kgsl-3d0.0/kgsl/kgsl-3d0/max_gpuclk
at the end of system/etc/init.qcom.post_boot.sh

thank you very much
lyfkevin said:
adb shell
su
echo 320000000 > /sys/devices/platform/kgsl-3d0.0/kgsl/kgsl-3d0/max_gpuclk
or
put
echo 320000000 > /sys/devices/platform/kgsl-3d0.0/kgsl/kgsl-3d0/max_gpuclk
at the end of system/etc/init.qcom.post_boot.sh
Click to expand...
Click to collapse

is it normal?
It is laggy in my end. Do I need to change something for it to fully work or what? I am new to using different kernels for phone so I am sorry.
It rebooted 1 time when downloading kernel tuner in playstore

Kernel works well and I am using it with tdmcode's aokp rom. It rebooted at 1st just after lockscreen appears but never again. I don' have any issues, its smooth.

[Kernel] 4.4.2 [Stock ROM] JassyKernel Release 1 [5 April 2014]

D801 for now only!
Features
Code:
* Fully customizable MPDecision
* MPDecision TouchBoost
* 3-phase thermal throttle
* Westwood+ TCP congestion control default
* 2.8Ghz OC
* UV capable
* Wheatley added
* ROW/FIOPS/SIO/VR/ZEN/Deadline/Noop/CFQ
* Dynamic File Sync
* Asynchronous Fsync
* Power Suspend
* Color Control
* F2FS Support (Planning to see about at least making a recovery to format /data partition with this)
* Debug code reduced
* -O2
* 4.6 Google Toolchain
* Optimized
* Other stuff I probably forgot
Here's a kernel I've been working on. You might know me from the Moto Cliq, HTC Sensation, Nexus 4, or Nexus 7 FHD and like always this kernel is just something I throw together from other devs work. I don't know how to code... at all. But I do like certain features from some devs and some from others and I like to make one that has those.
As it stands the kernel is very usable without modifying anything, but I am playing around to see what works best. Wheatley with 4 cores min seems to be doing pretty well. Give your suggestions to see what will become default.
FauxClock, TricksterMOD, and Kcontrol all work with this kernel. You may want to use FauxClock + one of the other two to take advantage of all the features.
Downloads
https://mega.co.nz/#!QRRWBSaC!CgnrXVBHyikQICjYCglr4-Bhgv6Dz0Jcjy9HQbAjI8c
It asks for a login but just hit cancel. Trying to figure this out, I've never run a server before.
SOURCE

Release 1
Code:
* 2f59497 (Paul Reioux) : fs/Kconfig: fix warning related to AYSNC_FSYNC patch
* b803126 (Paul Reioux) : OVERCLOCK: add ultimate overclock to 2.8 GHz
* f246915 (Paul Reioux) : f2fs: data: AIO optimization compatibility fixup
* 723f678 (Paul Reioux) : drivers/Makefile: add exFat support
* fd4441c (Paul Reioux) : drivers/exfat: add Samsung's open source exFat module version 1.2.4
* faa56ee (faux123) : scripts: remove localversion "+" from kernel version strings
* 1561c3f (Jose Salgado) : Release 1
* b8bdb8c (Jose Salgado) : Revert "fastcharge: initial Nexus 5 adaptation"
* e00a8f2 (Paul Reioux) : init/Kconfig: decouple DEBUG_KERNEL from EXPERT settings
* a865b5c (Jose Salgado) : revert a61aafc
* dbdddf8 (dr87) : Overclocking: if -> ifdef
* a61aafc (Paul Reioux) : sched/fair: improve fairness efficiency
* 2cee7d6 (dr87) : Overclocking: Enforce stock freq on boot rather than table limit
* cbb5a5a (Paul Reioux) : CPU OVERCLOCKING: initial CPU Overclocking for Snapdragon 800 Socs
* c28e477 (dr87) : cpufreq: Remove CPUBoost
* 772b0e0 (Paul Reioux) : Asynchronous Fsync: initial extraction of Async Fsync from HTC
* 612a6c8 (Paul Reioux) : msm: kgsl: show current power level for 8974 SOCs.
* 5aab668 (Paul Reioux) : fs/dyn_sync_cntrl: dynamic sync control
* bc3e94b (Paul Reioux) : fastcharge: initial Nexus 5 adaptation
* 8fcbf8c (Girish Mahadevan) : ARM: dts: msm: Allow L2 to be in GDHS during Standalone PC for msm8974
* 39ed978 (Paul Reioux) : msm8974-regulator.dtsi: further reduce CPU retention voltage
* eaed48b (Paul Reioux) : msm8974-regulator.dtsi: adjust GFX regulator parameters
* 68a18c0 (flar2) : Update ARM topology and add cpu_power driver
* b4828f1 (morfic) : remove tracing, fix piggy, tune build
* 9426ce0 (dr87) : machmsm: fix up rq stats
* 405c2c0 (Dennis Rassmann) : kbuild: drop cpuinit/cpuexit checks in modpost
* da4cae5 (Jose Salgado) : Revert "random: bringup"
* c502d32 (dennes544) : FS: import F2FS
* 60d3af0 (dr87) : bricked: Add kconfig and makefile
* 78f55e7 (dr87) : Revert "cpufreq: enable sibling cpu policy sharing"
* 15b1119 (dr87) : Revert "drivers/cpufreq/cpufreq.c: re-enable cpu policy restore"
* 657a382 (Paul Reioux) : drivers/cpufreq/cpufreq.c: re-enable cpu policy restore
* 691de92 (Paul Reioux) : cpufreq: enable sibling cpu policy sharing
* 25284d4 (franciscofranco) : sched: set sched_mc_power_savings to 2, which is the highest power saving possible value for this tunable
* 586bbc6 (Paul Reioux) : drivers/cpufreq/cpufreq.c: re-enable cpu policy restore
* d79f17e (Pranav Vashi) : msm: cpufreq: Prevent going above max freq when adding new device
* 0657604 (dr87) : lge: update board files
* 1946f87 (dr87) : bricked: add thermal_qcom
* efa211a (dr87) : bricked: update thermal
* ceed881 (Paul Reioux) : kernel/power/powersuspend: default to userspace for now
* 4e1dff6 (yank555-lu) : kernel/power/powersuspend: add back userpace control w/ default kernel control
* 4b2d961 (yank555-lu) : kernel/power/powersuspend: remove userspace dependency from powersuspend
* 3ae0cb6 (Paul Reioux) : powersuspend: new PM kernel driver for Android w/o early_suspend
* 9001717 (dr87) : bricked: add mpd_qcom
* b60fcf9 (dr87) : bricked: fix up mpdecision
* 4958d9b (dr87) : Port Bricked mpd in one commit
* f99197b (Jose Salgado) : just getting rid of it real quick
* c09c4d5 (Jose Salgado) : add .gitignore
* b84f632 (Dennis Rassmann) : kernel/sysctl: fix: 'warning: 'kbuf' may be used uninitialized in this function'
* eefb404 (showp1984) : Makefile: Optimizing build-options for linaro
* c2e5c62 (showp1984) : Makefile: Added Snapdragon optimizations
* 12b6430 (showp1984) : Makefile: adding config variable for Os/O2/O3 compilation
* 23e5630 (xcstacy) : Add /dev/frandom
* 1b38317 (Ezekeel) : Added CPUfreq governor 'wheatley'
* dd042dd (morfic) : Tune deadline, readahead, ondemand, interactive.
* c834f9e (savoca) : Add BFQ/SIO/FIOPS/ZEN/VR IO Schedulers
* e51f133 (houst0nn) : random: bringup
* c8d665d (Ricardo Cerqueira) : kcal_ctrl: Remove the lower limits from the RGB values
* 94bf2c6 (franciscofranco) : Enable pipe flag.
* a45e550 (imoseyon) : cpufreq: force cpuN policy to match cpu0 when changing freq or gov
* 9f38330 (Viresh Kumar) : cpufreq: Manage only online cpus
* 42b0f79 (faux123) : lib/string: use glibc version
* f750383 (faux123) : lib/memcopy: use glibc version
* 124f788 (Francisco Franco) : audit: kiss goodbye you stupid piece of crap logging messages.
* 305a3aa (WhatHub) : use of swp{b} is deprecated for ARMv6 and ARMv7
* 55c7b59 (Paul Reioux) : arch/arm/mach-msm/cpufreq.c: reduce dmesg log spam
* b2bcbf0 (Francisco Franco) : msm: krait: add CPU Voltage control.
* a8267bc (dr87) : scripts: add dtb tool
* 7e4dcc5 (dr87) : Make no external modules, build them into the kernel
* affd673 (Jackpot Clavin) : Add bull**** device tree stubs.
* 6b3b755 (Jose Salgado) : Initial commit

One more for me

Very good, waiting for d802 release
Sent from my LG-D805 using XDA Premium 4 mobile app

Sweet d801 on it
Sent from my LG-D801 using XDA Premium 4 mobile app

waiting for d802

No access for me.
Sent from my LG-D801 using XDA Premium 4 mobile app

razrlover said:
No access for me.
Sent from my LG-D801 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Just his cancel and then you should be able to download. Works for me when I downloaded from my phone
Sent from my LG-D801 using xda app-developers app

razrlover said:
No access for me.
Sent from my LG-D801 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
pluginre said:
Just his cancel and then you should be able to download. Works for me when I downloaded from my phone
Sent from my LG-D801 using xda app-developers app
Click to expand...
Click to collapse
like plug said.
Sorry, trying to fix that. It's also causing issues when adding FauxClock Download support.
Working on other variants also. Will keep you guys posted.

Will this work for cloudy pro 2 based rom?
Sent from my LG-D801 using Tapatalk

jeyd02 said:
Will this work for cloudy pro 2 based rom?
Sent from my LG-D801 using Tapatalk
Click to expand...
Click to collapse
That's what I'm currently using.

jassycliq said:
That's what I'm currently using.
Click to expand...
Click to collapse
Great sorry to Annoy lol but how is this one different from simple kernel 2?
Sent from my LG-D801 using Tapatalk

@dr87 seems to be using a lot of @franciscofranco's work with that kernel. It's also suppose to be leaner with less features and less "garbage".
It's a good route but I prefer to use @show-p1984's hotplug and thermal, it allows users full control over hotplugging. I've also added "wheatley" because I wanted to see how it would do running 4 cores always on; have yet to tune it so its not completely smooth. (The gov Wheatley is not smooth IMO, the kernel with its defaults is IMO)
A lot of it is in the changelog. dynamic fsync, RGB control, etc. etc.

Thanks a lot I'll certainly give it a try
Sent from my LG-D801 using Tapatalk

F2FS! I'd really like to have this file format on my G2 storage (but on an AOSP ROM)
 @jassycliq Could You maybe try to make resizing partitions possible? /system partition is waaay too big. (Almost 2GB is wasted on AOSP rom)

reas0n said:
F2FS! I'd really like to have this file format on my G2 storage (but on an AOSP ROM)
@jassycliq Could You maybe try to make resizing partitions possible? /system partition is waaay too big. (Almost 2GB is wasted on AOSP rom)
Click to expand...
Click to collapse
Resizing partitions = brick

I can use toolbox pro for cpu tunings?
Sent from my LG-D801 using Tapatalk

jeyd02 said:
I can use toolbox pro for cpu tunings?
Sent from my LG-D801 using Tapatalk
Click to expand...
Click to collapse
Pretty sure you can, I don't use it though so I can't promise anything. Some things require FauxClock seeing that it's the only app that supports those features. I believe that its only intelli-ksm, power suspend and dynamic filesync though.
As far as mpdecision and 3phase thermal, it requires trickstermod, kcontrol, or anyother app that has support for it (don't know all those out there)

Awwee Ok. Why requiring various apps. It's okay for it to running all those app at background.?
Sent from my LG-D801 using Tapatalk

jeyd02 said:
Awwee Ok. Why requiring various apps. It's okay for it to running all those app at background.?
Sent from my LG-D801 using Tapatalk
Click to expand...
Click to collapse
I don't require any apps at all.
The defaults ran great for me, but if you want to take more control I was recommending one of those.
They tend to run fine, AFAIK they don't usually continue running and applying settings over and over (only time i experienced that was with Mako and it would only apply rgb values on screen on) Most of the times these apps write to a file and that's it. Other ones just read it and modify as needed.

[KERNEL][4.4.4]F(X)TrinityUltimateKernel-V3.2 - MultiBoot - IntelliV2_ LUpdate Of Feb

{
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F(X)TrinityUltimateK.​
[ Introduction : ]
Welcome to the Scandalous Kernel , The F(x)TrinityUltimateKernel, Giving the Most recent Bit Patches including new Distinctive features and Optimization(s), When your utilizing this kernel expect 2-weeks default upgrade, The Bit upgrade will be after at regular intervals ( 2-Weeks )...
V.3.2 - Download ( Support 4.4.4 Only )
>> CLICK HERE!! <<​
=-= Are You New Or You Wanted the Best Kernel Setting Check It Out Here! =-=
>> Best Kernel Settings <<
For Additional Information This Beast Kernel works Best at! >> TrinityVengeanceRaptorX-HD <<
: CHANGELOG :
V3.2Minor Changes
dm ioctl: prevent unsafe change to dm_ioctl data_size
md: protect against crash upon fsync on ro array
dm: fix deadlock with request based dm and queue request_fn recursion
dm: handle requests beyond end of device instead of using BUG_ON
msm8974: added input mediator
new helper: iterate_fd()
Other F2FS Alpha Test
V3.0Major Changes
Merge New Sony Source.
sm: vidc: eliminate race condition in dynamic buffer mode
kernel/futex.c: Linux 3.4 compatibility fix up
futex: Avoid taking hb lock if nothing to wakeup
softirq: reduce latencies
futex: Larger hash table
AND MANY MORE!! Check Out The Git. Added Last 26Days Ago!
V2.8 and 2.9_EXT Major Patches.
Added IntelliThermal V2 Of Faux123
Added Custom WLAN Driver
Dave Kleikamp fxTHaxxorX
iov_iter: iov_iter_copy_from_user() should use non-atomic copy …
kleikamp authored on Feb 3, 2013 fxTHaxxorX committed an hour ago
iov_iter: move into its own file …
qup_i2c: Initialize I2C resource before registering. …
i2c_qup: Fix for unhandled IRQ …
qup_i2c: export qup_i2c_init_driver …
page_alloc: Make watermarks tunable separately
25+ Patches More.
V2.7B
Fix Wakeup Issue
cpufreq: force cpuN policy to match cpu0 when changing freq or gov
cpuidle: remove the power_specified field in the driver …
cpuidle: Fix finding state with min power_usage …
cpuidle: Get typical recent sleep interval …
cpuidle: Quickly notice prediction failure in general case …
cpuidle: Quickly notice prediction failure for repeat mode …
cpuidle: move field disable from per-driver to per-cpu
sched: Remove unused params of build_sched_domain() …
sched: Optimize build_sched_domains() for saving first SD node for a cpu …
sched: Optimize build_sched_domains() for saving first SD node for a cpu …
sched: scale the busy and this queue's per-task load before compare …
sched: remove WARN_ON(!sd) from init_sched_groups_power() …
sched: don't call get_group() for covered cpus …
sched: Use cached value of span instead of calling sched_domain_span() …
cpufreq: Fix policy getting stuck when user & kernel min/max don't ov… …
cpuidle: remove unused variable dead_state
V2.6
Upstream Update From 3.4.0 to 3.4.9 Upstream
WiFi And exFAT Works! Kernel Version is Updated!
And Many more! - To be Added.
HTC AFSync
Added PegasusQ
Added Adaptive
Added frontswap v16
Added abyssplug
Added New CpuFreq Driver
Added F2FS File System Support***
Updated ZRAM
Adaption Of HR_TIMER for 3.4
sparc64 Misc Patches.
ASoC: wcd9xxx: Enable headset in high performance
Fully WORKING exFAT AND WiFi - You Can see the proof because 3.4.0 is changed to 3.4.X
V2.5
New GPU Optimization
DT2W With DeepSleep
V2.4AC-REFRESHED
Advance GPU OC V2 - 600Mhz
EXT4 - Speed Boost
Added New BootSplash
Added New KGSL Update
Added New MDP Update
Add SlimBus OC
V2.4AC
Advance GPU OC V2
New KGSL Update
SLQB Re-Added
New DT2W
V2.4
Advance GPU OC
New KGSL Update
Added Advance TCP Congestion
Remove Low FPS
Fixed 2-3 Reboots after Intallation
V2.2-3 SPECIAL
Galaxy Note 3 OC CPU Table
Updated MDP Overlay
KGSL Update
DoubleTap2Wake With Battery Drain Fix
New MakeFile Changes
New TCP Congestion
V2.1
exFAT Fix
V2.0
GPU Performance Legit Boost Upto 10% Now!
* New Patches at KGSL and MDSS
* Reduce Voltage
* New I/O Scheduler ( TrinNDroid )
* ARCH_POWER = Enabled
* softirq: Use hotplug thread infrastructure
* [backport] Hotplug thread infrastructure
Increased Battery Life
Updated CPU Frequency Stepping
Partial Fix for CPU Heating - Reduce by 5%
Increased Performance to 15%
Upstream Update For CPU Frequemcy
Increase performance form 5MS to 2MS
15+ More!
V1.9 - Special Update and Special Kernel Series.
Updated Intelliplug
Tons Of Optimization
Updated TWRP Now Working at KK
Updated Futex Table x2 Performance
Added PowerSuspend Hooks
Fixed GPU OC - Now It Doesn't go Back to 450 ( Make Sure to Re-Apply the OC Every ReBoot )
TCP Window Size is 64K
Optimize Slack_Speed for Size and Speed
Added Frandom - Increased Speed and Performance ( Benchmark Results Improved )
Reduce VFS Pressure
PowerSuspend Updated to 1.5
PowerSusped Added Userspace | HYBRID | USERCONTROL - Use FauxApp To Control This.
SOFTIRQ : Reduce Latencies
slub.c: little tweak for performance improvements
ChangeLog For 1.8 :
Linux 3.4,91 || UnPushed 3.4.62-3.4.90
Removed Chronic Hotplug and smp
Fix 2.4GhzOC Table Except Voltage Table
1080p Recording Optimization And Tweak
msm_fb: Set RR sched policy for Glupdator thread
ChangeLog For 1.7 :
CHROMIUM: BACKPORT: lib/lzo: huge LZO decompression speedup on ARM by
CHROMIUM: BACKPORT: lib/lzo: Update LZO compression to current upstream
CHROMIUM: mm: Fix calculation of dirtyable memory
msm8974-regulator.dtsi: further reduce CPU retention voltage
msm8974-regulator.dtsi: adjust GFX regulator parameters
char:random: Some tweaks from around github
futex: Make lookup_pi_state more robust
futex: Always cleanup owner tid in unlock_pi
futex: Validate atomic acquisition in futex_lock_pi_atomic()
mm, oom: fix and cleanup oom score calculations
mm, oom: fix badness score underflow
futex: Prevent attaching to kernel threads
evert "Revert "Correct R and G offsets for correct mapping""
mm, oom: fix and cleanup oom score calculations
ChangeLog For 1.6 :
Linux 3.4.0 - 3.4.62
Remove Early Suspend
Increase MDP Clock By x2
CpuFreq Optimization
XHCI Optimization
ChangeLog For 1.5 :
Linux 3.4.0 - 3.4.4
Re-Optimized KGSL - ( Remove Some Flickers )
Patch Sched.c
Patch Sched.h
Improved SSD
exFAT Tweak
Moved 2.6.X Device Tree To 3.4.X
Events Optimization
FS - AIO Optimization
FUSE Optimization
NFS Tweak
ChangeLog For 1.4 :
Optimized Square Root
Bit Optimization
mm : Read-Ahead To 512kB
SavaGedZen Gov
KGSL Tweak V2
R and G Offset Mappings
Reduce CPU Retention
Add Early_Suspend_Delay
Ramdisk : Enable Init.d Support
Patch The GPU
CPUs Patch
ChangeLog For 1.3 :
Re-Merge To Latest Sources ( Removing some cherry-picked Patches )
ChangeLog For 1.1 :
Rebased To New Kernel Source
Fix Pronto Wlan
ChangeLog For 1.0 :
TCP Congestion Advance :
TCP - Hybla
TCP - Cubic
TCP - Reno
TCP - Bic
TCP - WestWood
TCP - HighSpeed
TCP - HTCP
TCP - Vegas
TCP - Veno
TCP - Scalable
TCP - Lp
TCP - Yeah
TCP - illinois
MMC Tweak
KGSL Tweak - Optimize For Gaming
Linaro ToolChain
F2FS Enabled
MSM8964-Regulator
Sched : Optimization
FastCharge
ZRAM
Cherry-picked All Features From DooMLoRD using SmartGit or Merge All Features From His Source.
Other Features Merge Faux123 using SmartGit
Kernel:Workque Optimization
Correct R and G offsets for correct mapping
kernel:sched: LOAD_FREQ (4*HZ+61) avoids loadavg Moire
smp: patches from mainline 3.5 to hopefully help with hotplug efficiency
LMK Optimization
Slub Tweak
Like My Work? Satisfied with my Work? Cheers Thanks For the Beer!
​
[ Donors : ]
@fixx1983 - 20$
@Klaus N. - 15Euro
@lil-diabo
[ Features : ]
GPU OverClock
CPU OverClock
MPDecision
TCP Congestion
Many More!
[ Schedulers & Governor : ]
Deadline
Noop
Row
CFQ
SIO
FIOPS
BFQ
ZEN
VR
LagFree
SmartAssV2
PegasusQ
IntelliActive and Intellidemand
Interactive
Darkness(?)
Wheatley
DanceDance
SavagedZen
OndemandX (?)
OndemandQ (?)
Conservatice, Ondemand, Lionheart, LionheartX(?), Performance.
[ Future Features : ]
New BootImage
Compiled using CustomizeToolChain Via SGS4 Section
New Patches
AROMA Installer
New Kernel Version || ATM It's 3.4.0
[ GPL v2/3 ( Some Commits Are not push Due To WiFi Problems Before : ]
GitHub.com
[ Donation : ]
BTC Address : 12i62Nfodt5srxri4XBmwzGbGj859C58JZ
Donors :
[T.O.S : ]
1. It's not my responsibility what ever will happen to your device after flashing the kernel.
XDA:DevDB Information
F(X)TrinityUltimateKernel - The Xperia Z1 True Kernel., Kernel for the Sony Xperia Z1
Contributors
f(x)THaxxorX, Faux123, DooMLorD, Garcia98, Davidlohr Bueso, showp1984
Kernel Special Features:
Version Information
Status: Stable
Current Stable Version: 3.0
Stable Release Date: 2014-12-01
Created 2014-07-01
Last Updated 2015-01-28

Recommended Settings ( BELOW ) & CM Support ( SOON )
Kernel Configuration #1
Thanks To @Wolfbreak for sharing his Config.
ROM: TrinityVengeanceRaptorX™ HD 1.4
Kernel: F(X)TrinityUltimateKernel-V2.7B
CPU Clocks
Max Clock: 2265600
Min Clock: 300000
Governor: intelliactive or PegasusQ [PegasusQ with MPDecision only]
Snake Charmer: On
I use intelliactive + intelliplug Combination but PegasusQ + MPDecision is a very good Combination too so test it out and choose which one you prefer.
CPU Hotplug
intelliactive
Hotplug Driver: intelliplug
Intelliplug Control - Touch Boost: On
Screen-Off Frequency: Off
Hysterisis Value: 8
Intelliplug Profile: Eco Conservative
Threshold Value: 722
CPU Hotplug for PegasusQ
Hotplug Driver: MPDecision
CPU Idle Stats
C0 - WFI: On
C1 - Retention: On
C2 - Standalone_Pc: On
C3 - PC: On
Thermal Manager
Thermal Managment Driver: IntelliThermal
Frequency Throttle Temperature: 85
Core Throttle Temperature: 80
Frequency Throttling Cores:
Core0 - On, Core1 - On, Core2 - On, Core3 - On
Core Throttling Cores:
Core0 - Off, Core1 - On, Core2 - On, Core3 - On
GPU Manager
GPU Governor: simple_ondemand
GPU Clock Control: 450 Mhz
Simple GPU Algorithm: On
Simple Governor - Laziness: 4
Simple Governor - Ramp Threshold: 7
IO Scheduler
FIOPS for eMMC and SDCard, Readahead Size: 512
eMMC / SDCard Entropy Contribution: Off
Color / Gamma
Color Temperature: Red - 255, Green - 235, Blue - 250
OBS! Set those values under Settings > Screen / Display > White Balance:
Red - 0, Green - 25, Blue - 25
Memory Manager
ZRAM Controls: Off
Clear VFS Cache After Boot: On
Auto FS Writeback Delay Mode: On
Swappiness: Change 80
VFS Cache Pressure: 100
Dirty Ratio: 20
Dirty Background Ratio: 5
Same Page Merge
Intelli-KSM Enable: On
Activation Threshold: 36 megabytes
Cycles per activation: 3 cycles
Pages to Scan: 400 pages
Scan Delay Interval: 500 ms
Battery Controls
Battery Temperature Throttling: On
Battery Temperature Threshold: 45 Celsius
Battery Throttle CPU Frequency: 1190400
FastCharge Options: Custom [Optional]
AC Charge Current (mA): 1500 [Optional]
Miscellaneous
PowerSuspend Modes: Hybrid
PowerSuspend: On
Dynamic File Sync: On
TCP Congestion Control: Westwood
If you cant set PowerSuspend then activate Userspace Mode check PowerSuspend and activate Hybrid again after that and both should be on and work.
--------------------------------------------------
--------------------------------------------------
--------------------------------------------------
Kernel Configuration #2 [/U]
Thanks To F(X)THaxxorX ( ME ) for sharing his Config.
ROM: TrinityVengeanceRaptorX™ HD 1.4
Kernel: F(X)TrinityUltimateKernel-V2.7B
CPU Clocks
Max Clock: 2.266 Ghz
Min Clock: 422 Mhz
Governor: OndemandPlus
Snake Charmer: On ( DEFAULT )
CPU Hotplug
Mpdecision
TouchBoost = Off
# Enables two core touch boost
sys.somc.touch_perf_kick=0
CPU Idle Stats
C0 - WFI: Off
C1 - Retention: Off
C2 - Standalone_Pc: Off
C3 - PC: Off
Thermal Manager
Thermal Managment Driver: Thermald
GPU Manager
GPU Governor: userspace
GPU Clock Control: 450 Mhz
Simple GPU Algorithm: On
Simple Governor - Laziness: 4
Simple Governor - Ramp Threshold: 5
IO Scheduler
FIOPS for eMMC and SDCard, Readahead Size: 1536
eMMC / SDCard Entropy Contribution: On
Color / Gamma
N/A -- Off
Memory Manager
ZRAM Controls: Off
Clear VFS Cache After Boot: Off
Auto FS Writeback Delay Mode: Off
Swappiness: Change 45
VFS Cache Pressure: 100
Dirty Ratio: 17
Dirty Background Ratio: 15
Same Page Merge
Intelli-KSM Enable: On
Activation Threshold: 25megabytes
Cycles per activation: 5 cycles
Pages to Scan: 256 pages
Scan Delay Interval: 465 ms
Battery Controls
Battery Temperature Throttling: On
Battery Temperature Threshold: 40 Celsius
Battery Throttle CPU Frequency: 1036800
FastCharge Options: Force AC[Optional]
AC Charge Current (mA): 500[Optional]
Miscellaneous
PowerSuspend Modes: Userspace
PowerSuspend: On - Force Enabled By Userspace Option
Dynamic File Sync: On
TCP Congestion Control: BIC

Atlast waiting for this..
Thanks

Thread Title Fixed Sorry, 20% ( Uploading in progress )

Stock or AOSP.. Seems Stock..

abbychauhan said:
Stock or AOSP.. Seems Stock..
Click to expand...
Click to collapse
This is Stock based kernel .).

4.4.X, So Yes 4.4.4 Is Supported ..
4.4.4 Checking..
Download Now Available!
http://goo.gl/yrFcyy

f(x)THaxxorX said:
4.4.X, So Yes 4.4.4 Is Supported ..
Download Now Available!
http://goo.gl/yrFcyy
Click to expand...
Click to collapse
1) Battery, performance or hybrid / combo focused kernel?
2) Which Linux kernel source version is this?
3) Any additional hotplug drivers included?
4) Does this one come with Sony RIC Root Security disabled as default for easier root access?

f(x)THaxxorX said:
4.4.X, So Yes 4.4.4 Is Supported ..
Download Now Available!
http://goo.gl/yrFcyy
Click to expand...
Click to collapse
Thanks a lot, awesome work! But just to let you know, you put two periods in the filename.

Thanks sir! :good:
Nice to see more development...will try it asap when I return to stock

Destroyedbeauty said:
1) Battery, performance or hybrid / combo focused kernel?
2) Which Linux kernel source version is this?
3) Any additional hotplug drivers included?
4) Does this one come with Sony RIC Root Security disabled as default for easier root access?
Click to expand...
Click to collapse
Its 3.4.0 Read the Thread , Better try it so you can answer your other questions .. Lets say this is hybrid the battery depends on how you select your governor . goodluck!

Chocolatetrain said:
Thanks a lot, awesome work! But just to let you know, you put two periods in the filename.
Click to expand...
Click to collapse
Sorry about that, Im gonna fix that when I released my next update

[Fenix] said:
Thanks sir! :good:
Nice to see more development...will try it asap when I return to stock
Click to expand...
Click to collapse
Nice to see that there is someone interested

Nice to see extra development
Sent by my Z1 with XDA Fax

Duvel999 said:
Nice to see extra development
Sent by my Z1 with XDA Fax
Click to expand...
Click to collapse
With RomAur 9 not boot

f(x)THaxxorX said:
Nice to see that there is someone interested
Click to expand...
Click to collapse
Trust me there is always interested people here on xda
Maybe we will see also your rom eheh :fingers-crossed:

Yeah, my ROM Will be released after 1-2 Months, I Need to Optimize my AROMA Installer from my Old Xperia S

jack92me said:
With RomAur 9 not boot
Click to expand...
Click to collapse
Im Using 4.4.2, Let me try it @ 4.4.4 .

i remember u on xperia s forum
glad to see u here!
looking forward to your develpoment

jack92me said:
With RomAur 9 not boot
Click to expand...
Click to collapse
KitSlim Evo5 IS booting...so its not a Kernel-related problem. Did you wipe Dalvic and Cache? Its a MUST when installing Kernel
My problem is that the kernel is not mounting my sd-card (64GB)

[KERNEL][3.4.106][LP][ION] K^Kernel 3.4.106 v2.0 for LP 5.0 [11/03/2015][EOL]

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In this thread you may find my customized kernel 3.4.x for Lollipop rom (CM 12.0 and derivatives) that use ION+PMEM ADSP memory allocations.
Of course, your feedback, as always, are welcome and certainly valuable.
The main features are the following:
- Kernel 3.4.x
- Kernel based on more updated kk_2.7-stable branch of CAF (Code Aurora Forum)
- Sources synched with cm-12.0 repo branch of DevCon Team
- Built with my custom Linaro 4.9.3-2015.02 toolchain optimized for Cortex-A8
- Built with Cortex-A8 and NEON VFP optimization flags (both kernel and modules)
- Built with -O3 optimization flag (both kernel and modules)
- CPU overclockable up to 1824 MHz
- CPU frequencies undervolted (UV version) or extremely undervolted (EXUV version)
- CPU voltage control VDD sys interface (click for more details)
- Dynamic memory allocation of ION heaps through CMA (Contiguous Memory Allocator)
- Dynamic memory allocation of PMEM ADSP heap through CMA (Contiguous Memory Allocator)
- 426MB of free RAM
- Init.d support
- Fast Charge support (default disabled, click for more details)
- Battery Life eXtender support (default disabled, click for more details)
- Ram Console support (click for more details)
- TRIM support
- USB OTG support (if also implemented on rom side)
- Lowered display panel voltage
- Lowered vibetonz voltage
- Lowered wifi voltage
- Lowered swappiness (60 -> 45)
- Increased CPU frequency during boot
- Optimized AES and SHA1 routines for ARM cpu architecture
- Fixed 100% battery notification after charger unplug
- Increased audio volume on board side
- Con Kolivas' CK3 Tweaks
- Optimized SLUB memory allocator
- Optimized ARM RWSEM (read/write semaphore) algorithm
- Optimized asynchronous I/O latency on solid state disks
- Disabled Gentle Fair Sleepers for better UI performance
- CIFS support on boot
- Memory compaction
- Dynamic compression of clean pagecache pages
- Dynamic FSync v1.2 (click for more details)
- Dynamic dirty page writebacks (click for more details)
- VM tweaks for performance and less battery consumption
- Timer slack controller (click for more details)
- Dynamic management of the minimal timer slack value during suspend/resume (click for more details)
- LowMemoryKiller management of not killable processes (click for more details)
- exFAT support
- Additional TCP Congestion algorithms
- Updated ZRam, ZSMalloc, ZCache built-in modules
Available CPU governors:
- Adaptive
- BrazilianWax
- Conservative
- Hyper
- Intellidemand
- Interactive
- InteractiveX
- LionHeart
- LulzActive
- OnDemand (default)
- OnDemandX
- Performance
- Powersave
- SmartAssV2
Available I/O schedulers:
- BFQ
- CFQ
- Deadline
- Fiops
- Noop
- ROW (default)
- SIO
- V(R)
Kernel Downloads for Lollipop ION+PMEM ADSP:
K^Kernel LP-5.0 Mediafire Folder
[QRCODE]https://www.mediafire.com/folder/b82tiiw5u7hd7[/QRCODE]
- v2.0 -
for CM 12.0
and the other roms based on CM 12.0
Note: You must use the CWM recovery with new partition assignments you may find inside CM 12.0 thread by arco68.​
Howto install the kernel:
1) Download the preferred kernel zip file to sdcard or external sdcard
2) Reboot to recovery mode
3) Flash the kernel zip file
4) Reboot the system
Kernel sources (on GitHub):
Development branch of K^Kernel 3.4 for LP 5.0 ION+PMEM ADSP
​
Useful info:
- Special features and sysfs settings
- Frequently asked questions
​
Tables:
​
Changelog:
Code:
[B]11/03/2015 - K^Kernel 3.4 v2.0 for Lollipop ION+PMEM ADSP[/B]
- Kernel 3.4.106
- Built with my latest custom Linaro 4.9.3-2015.02 toolchain optimized for Cortex-A8
- defconfig: Switch to ROW I/O scheduler as default (credits to Christopher83)
- HID: input: generic hidinput_input_event handler (credits to David Herrmann)
- cpufreq: Avoid using global variable total_cpus (credits to Ruchi Kandoi)
- net/ping: handle protocol mismatching scenario (credits to Jane Zhou)
- net: ipv6: allow choosing optimistic addresses with use_optimistic (credits to Erik Kline)
- netfilter: IDLETIMER: fix invalid deference of timer (credits to JP Abgrall)
- prctl: make PR_SET_TIMERSLACK_PID pid namespace aware (credits to Micha Kalfon)
- crypto: arm-aes - fix encryption of unaligned data (credits to Mikulas Patocka)
- ARM: 8118/1: crypto: sha1/make use of common SHA-1 structures (credits to Jussi Kivilinna)
- ARM: 8119/1: crypto: sha1: add ARM NEON implementation (credits to Jussi Kivilinna)
- ARM: 8120/1: crypto: sha512: add ARM NEON implementation (credits to Jussi Kivilinna)
- defconfig: Enable NEON optimized SHA1 crypto routines (credits to Christopher83)
- defconfig: Build QCOM crypto device as built-in (credits to Christopher83)
- pstore: selinux: add security in-core xattr support for pstore and debugfs (credits to Mark Salyzyn)
- KEYS: close race between key lookup and freeing (credits to Sasha Levin)
- msm_fb: Fix RGB pipe offset issue (credits to Blefish)
- msm: mdp.c fix deadlock which causes blue screen (credits to Vinu Deokaran)
- msm: rq_stats: Use cpufreq API to get the current frequency (credits to Archana Sathyakumar)
- defconfig: Back to enforced SELinux (credits to Christopher83)
- staging: android: ashmem: add missing include (credits to Rom Lemarchand)
- net: wireless: bcmdhd: Remove WLAN_CIPHER_SUITE_AES_CMAC advertisement (credits to Dmitry Shmidt)
- gpu: ion: Refactor locking (credits to Srinivasarao P)
- gpu: ion: use a list instead of a tree for heap debug memory map (credits to Srinivasarao P)
- gpu: ion: fix locking issues in debug code (credits to Mitchel Humpherys)
- gpu: ion: add locking to traversal of volatile rb tree (credits to Srinivasarao P)
- gpu: ion: Delete invalid extra file (credits to Pradosh Das)
- drivers: video: msm: Cleanup some dead codes (credits to sirmordred)
- lz4: Revert previously applied commits (credits to Christopher83)
- decompressor: add LZ4 decompressor module (credits to Kyungsik Lee)
- lib: add support for LZ4-compressed kernel (credits to Kyungsik Lee)
- lib: add lz4 compressor module (credits to Chanho Min)
- lib/lz4: correct the LZ4 license (credits to Richard Laager)
- lz4: fix compression/decompression signedness mismatch (credits to Sergey Senozhatsky)
- lz4: ensure length does not wrap (credits to Greg Kroah-Hartman)
- lz4: fix another possible overrun (credits to Greg Kroah-Hartman)
- lz4: add overrun checks to lz4_uncompress_unknownoutputsize() (credits to Greg Kroah-Hartman)
- Update zram and zsmalloc up-to 3.17 kernel changes (credits to sirmordred)
- msm7x30: Remove high memory configurations (credits to Christopher83)
- msm7x30: Change all heap types to CMA (credits to sirmordred)
- msm7x30: Workaround deep sleep issue (credits to Christopher83)
- msm7x30: Increase ION memory heap for surfaceflinger (credits to Christopher83)
- defconfig: Update default and custom configurations (credits to Christopher83)
- f2fs: Sync F2FS to Jaegeuk's linux-3.4 branch (credits to Christopher83)
- selinux: fix inode security list corruption (credits to Stephen Smalley)
- Squashed update of kernel from 3.4.105 to 3.4.106 (credits to Christopher83)
- ipv4: try to cache dst_entries which would cause a redirect (credits to Hannes Frederic Sowa)
- USB: android: release spinlock before queuing work in android_setup (credits to Tarun Gupta)
- usb: gadget: Ignore the second set_config from the host (credits to ChandanaKishori Chiluveru)
- usb: android: Skip the work when set_config arrives with same value twice (credits to ChandanaKishori Chiluveru)
- usb: android: Fixup multiple lun support (credits to arco68)
- msm: camera: s5k4ecgx: Set mount angle from platform data (credits to sirmordred)
- USB: gadget: qdss: Fix strncmp length usage (credits to Kumar Gala)
- usb: android: Print LUN debug info (credits to Christopher83)
- Ramdisk updates (credits to Christopher83)
[B]31/12/2014 - K^Kernel 3.4 v1.0 for Lollipop ION+PMEM ADSP[/B]
- Kernel 3.4.105
- Built with my latest custom Linaro 4.9.3-2014.12 toolchain optimized for Cortex-A8
- ariesve: Set SELinux to be permissive (credits to Christopher83)
- defconfig: Set selinux permissive (credits to arco68)
- defconfig: Enable CONFIG_NETFILTER_XT_TARGET_IDLETIMER (credits to arco68)
- defconfig: Regenerate (credits to arco68)
- ext4: Add support for FIDTRIM, a best-effort ioctl for deep discard trim (credits to JP Abgrall)
- broadcom_wlan: Modify country code source (credits to arco68)
- net: ipv6: autoconf routes into per-device tables (credits to Lorenzo Colitti)
- netfilter: nf_conntrack: decrement global counter after object release (credits to Pablo Neira Ayuso)
- net: ipv6: Add a sysctl to make optimistic addresses useful candidates (credits to Erik Kline)
- Enable NEED_NETDEV for vendor command support. (credits to Subhani Shaik)
- cfg80211: ignore supported rates for nonexistant bands on scan (credits to Felix Fietkau)
- crypto: msm: check potential integer overflow (credits to William Clark)
- defconfig: Enable generic USB audio driver (credits to tobigun)
- i2c: chips: fsa9480: Add support for charging in USB-OTG mode (credits to tobigun)
- defconfig: Update custom defconfigs (credits to Christopher83)
- defconfig: Disable Frandom module (credits to Christopher83)
- i2c: chips: fsa9480: Add write-permission for USB-OTG charger type (credits to tobigun)
- Staging: android: binder: More offset validation. (credits to Arve Hjonnevag)
- fs: f2fs: Initial import from https://kernel.googlesource.com (credits to arco68)
- defconfig: Enable F2FS filesystem (credits to arco68)
Credits and Thanks to:
arco68, CastagnaIT and Ivendor for their awesome work and their kernel sources
Ezekeel, Doomlord, Faux123, Stratosk, Tegrak, ErasmuX, Imoseyon, Blefish, mikeioannina, Madridii and other devs I'm surely missing
CyanogenMod, Kernel.org, Code Aurora Forum, Google, Linaro GCC developers
XDA:DevDB Information
[GT-I8150][ION] K^Kernel 3.4 for LP 5.0 ION+PMEM ADSP, Kernel for the Samsung Galaxy W I8150
Contributors
Christopher83
Source Code: https://github.com/Christopher83/samsung-kernel-msm7x30/tree/cm-12.0
Kernel Special Features: Customized kernel 3.4.x for LP 5.0 rom (CM 12.0 and derivatives) with ION memory allocations
Version Information
Status: Stable
Current Stable Version: v2.0
Stable Release Date: 2015-03-11
Created 2014-12-31
Last Updated 2015-06-08

Special features and sysfs settings (Part 1):
Here you can find some useful scripts that can be used with the following described features:
Scripts​
CPU voltage control VDD sys interface
This feature allows to customize the voltage assumed by each cpu scaling frequency.
It could be useful if you'd like to decrease one or more voltages for battery saving purposes (undervolting), or to increase/adjust them to prevent phone freezes (overvolting).
How to customize the voltages:
1) By downloading and using Trickster MOD or IncrediControl and changing the voltages table inside the SVS tab
2) By using customized init.d scripts (the custom values will be always restored after a reboot, if you don't format the system partition)
- Download one of the script named 01vdd_levels*
- If the file has been saved with .txt extension (stock browser), rename it by removing the .txt extension
- Edit the file by setting your customized voltages, where each line has this syntax
Code:
echo "[I][B][COLOR="Blue"]cpu_freq_HZ[/COLOR][/B][/I] [I][COLOR="SeaGreen"][B]mV[/B][/COLOR][/I]" > /sys/devices/system/cpu/cpu0/cpufreq/vdd_levels
cpu_freq_HZ is the cpu frequency in Hz you'd like to change
mV is the voltage you want to set
For example, the following line means that when the cpu frequency is 1516800 Hz = 1516 MHz, the voltage used will be 1175 mV
Code:
echo "1516800 1175" > /sys/devices/system/cpu/cpu0/cpufreq/vdd_levels
- Copy the new file inside /etc/init.d
- Give the rwxr-xr-x permissions to the file (read, write, execution for owner, read and execution for group users, read and execution for others)
- Reboot
3) By using Terminal Emulator (note that the values you set will be lost after a reboot/shutdown)
- Open Terminal Emulator
- Run these commands
Code:
su
# Run a command for each cpu frequency voltage you'd like to change
echo "[I][B][COLOR="Blue"]cpu_freq_HZ[/COLOR][/B][/I] [I][COLOR="SeaGreen"][B]mV[/B][/COLOR][/I]" > /sys/devices/system/cpu/cpu0/cpufreq/vdd_levels
cpu_freq_HZ is the cpu frequency in Hz you'd like to change
mV is the voltage you want to set
For example, the following line means that when the cpu frequency is 1516800 Hz = 1516 MHz, the voltage used will be 1175 mV
Code:
echo "1516800 1175" > /sys/devices/system/cpu/cpu0/cpufreq/vdd_levels
Alternative Extreme Undervolted (ExUV) settings
If after overclocking your I8150 you noticed some freezes when on ExUV kernel builds, you may use an alternative extremely undervolted setting with the init.d script you can find here: 01vdd_levels_alt_exuv
- Download the script
- If the file has been saved with .txt extension (stock browser), rename it by removing the .txt extension
- Copy the new file inside /etc/init.d
- Give the rwxr-xr-x permissions to the file (read, write, execution for owner, read and execution for group users, read and execution for others)
- Reboot
Force Fast Charge
This feature allows you to force AC charging for any charger that is detected as USB (eg. PC USB ports, USB Car Chargers) and pull the full current the charger can support, in such a way as to speed up the time required for a complete battery recharge.
By enabling this feature, the USB / ADB data transfers will be disabled (security limitation to protect your data).
How to enable/disable the Force Fast Charge:
1) By using the related setting inside System->Advanced->Force Fast Charge (only on CM 10 Beta 3 and next releases)
2) By downloading and using Trickster MOD or IncrediControl or NsTools
2) By directly editing the file /sys/kernel/fast_charge/force_fast_charge and setting 1 to enable the force charge, 0 to disable it (note that set value will be lost after a reboot/shutdown)
3) By using Terminal Emulator (note that set value will be lost after a reboot/shutdown)
- Open Terminal Emulator
- Run this command to enable the force fast charge feature
Code:
su
echo 1 > /sys/kernel/fast_charge/force_fast_charge
- Then, when you want to restore the normal status, run this command to disable the force fast charge feature
Code:
su
echo 0 > /sys/kernel/fast_charge/force_fast_charge
4) By using a customized init.d script, but I don't recommend it because you have to remember to disable the feature every time you want to connect your device to a pc for data transfering after every reboot
Battery life extender (BLX)
This feature has been developed by Ezekeel and allows to set a customized battery charging limit (100% is the default stock value, if you want, you can set a lower value).
As Ezekeel said, it is commonly accepted that both very low and very high charge states accelerate the degradation of the battery capacity (that is why you should store Li-Ion batteries at around 40% charge).
If you set a charging limit equal to 100, this feature will be disabled.
How to activate this feature and set a customized charging limit:
1) By downloading and using Trickster MOD or NsTools by setting the customized battery life extender charging limit
2) By using a customized init.d script (the custom value will be always restored after a reboot, if you don't format the system partition)
- Download the script named 15blx
- If the file has been saved with .txt extension (stock browser), rename it by removing the .txt extension
- Edit the file by setting your preferred charging limit (the downloaded script will set the charging limit to 95%)
- Copy the new file inside /etc/init.d
- Give the rwxr-xr-x permissions to the file (read, write, execution for owner, read and execution for group users, read and execution for others)
- Reboot
3) By directly editing the file /sys/class/misc/batterylifeextender/charging_limit (the value you set will be lost after a reboot/shutdown)
4) By using Terminal Emulator (note that set value will be lost after a reboot/shutdown)
- Open Terminal Emulator
- Run these commands (changing the charging limit = 95 with the preferred one)
Code:
su
echo 95 > /sys/class/misc/batterylifeextender/charging_limit
LowMemoryKiller
The LowMemoryKiller driver is used to kill a selected process and free the memory when it is under one of the defined thresholds.
The tuning of the driver could be achieved by means of two parameters exposed by the kernel module via sysfs interface:
- /sys/module/lowmemorykiller/parameters/minfree
This file includes a comma separated array of the threshold numbers for minfree memory size (in page units).
- /sys/module/lowmemorykiller/parameters/adj
This file includes the comma separated array of oomadj factors, if the corresponding minfree threshold has been reached, one of the process with an oomadj greater than this number will be killed.
The oomadj factor is a property associated to each process, its value is in a range from -17 to +15, the processes with a higher oomadj factor will be the first to be killed when a specific minfree threshold has been reached.
RAM Console
This feature is useful expecially for development and debugging purposes, when occurs kernel panic / unexpected shutdowns or reboots. Pratically, the kernel messages are also stored inside a little RAM portion and restored during reboot after a kernel panic, inside the file /proc/last_kmsg.
Dynamic FSync
This feature has been developed by Faux123 and allows to dynamically manage the synchronous writes performed on file system (FSync).
It uses asynchronous writes when the screen is on, instead of synchronous writes, to have better performance and a slightly lower battery drain, while when the screen is off the synchronous writes are re-enabled to flush all the outstanding writes and prevent possible data loss.
How to enable/disable the Dynamic FSync (default enabled):
1) By downloading and using Trickster MOD
2) By directly editing the file /sys/kernel/dyn_fsync/Dyn_fsync_active and setting 1 to enable the dynamic fsync, 0 to disable it (note that set value will be lost after a reboot/shutdown)
3) By using Terminal Emulator (note that set value will be lost after a reboot/shutdown)
- Open Terminal Emulator
- Run this command to disable the dynamic fsync feature
Code:
su
echo 0 > /sys/kernel/dyn_fsync/Dyn_fsync_active
- Or run this command to re-enable the dynamic fsync feature
Code:
su
echo 1 > /sys/kernel/dyn_fsync/Dyn_fsync_active
Dynamic dirty page writebacks
This feature has been developed by me and allows to dynamically manage the dirty page writebacks with two different intervals, one when the screen is on and another when the screen is off.
It is based on a commit of Francisco Franco, but instead of using hard coded values and of disabling at all the dirty page writebacks while the screen is on (possibility of data loss), I preferred to use a customizable higher dirty page writebacks interval (15 seconds) than the default one (5 seconds) while the screen is on and a customizable default interval (5 seconds) when the screen is off.
By using a higher interval we have better performance and less battery consumption, with a very low risk of data loss.
How to customize the dynamic dirty page writebacks feature (default enabled):
Three new procfs parameters are exposed inside /proc/sys/vm path:
- dynamic_dirty_writeback is the activation status of this feature, set 1 to enable it, set 0 to disable it and use the standard behaviour
- dirty_writeback_active_centisecs is the interval for the dirty page writebacks when the system is active (screen on), the default value is 1500 centisecs (15 seconds)
- dirty_writeback_suspend_centisecs is the interval for the dirty page writebacks when the system is suspended (screen off), the default value is 500 centisecs (5 seconds)
In my kernel builds, during boot, I set other customized values:
- an interval of 30 seconds while the screen is on
- an interval of 10 seconds when the screen is off
1) By directly editing one of the file written above inside /proc/sys/vm and setting the preferred value (note that set value will be lost after a reboot/shutdown)
2) By using Terminal Emulator (note that set value will be lost after a reboot/shutdown)
- Open Terminal Emulator
- Run this command to disable the dynamic dirty page writebacks feature
Code:
su
echo 0 > /proc/sys/vm/dynamic_dirty_writeback
- Or run this command to re-enable the dynamic dirty page writebacks feature
Code:
su
echo 1 > /proc/sys/vm/dynamic_dirty_writeback
- Run this command to set customize the two intervals (30 seconds while the screen is on, 10 seconds when the screen is off)
Code:
su
echo "3000" > /proc/sys/vm/dirty_writeback_active_centisecs
echo "1000" > /proc/sys/vm/dirty_writeback_suspend_centisecs

Special features and sysfs settings (Part 2):
Timer slack controller and dynamic management of the minimal timer slack value
The timer slack controller is a feature developed by Kirill Shutemov and it allows to set the minimal timer slack value for every process contained within a control group (cgroup).
A timer slack allows the kernel to manage processes wakeup requests at some future time.
Thanks to this feature, the kernel can set a specific timer slack for the involved processes, minimizing the number of wakeups and allowing a lower system's power consumption.
For further info: Timer slack for slacker developers
I also implemented a new feature in addition to the above one that allows the dynamic management of the minimal timer slack value.
So, it's possible to use different minimal timer slack value when the system is active and when has been suspended.
How to customize the dynamic timer slack controller feature:
Three new cgroup parameters are exposed inside each processes hierarchy contained in /dev/cpuctl path:
- timer_slack.min_slack_ns is the timer slack used when the system is active for the current processes hierarchy
- timer_slack.min_slack_suspend_ns is the timer slack used when the system is suspended for the current processes hierarchy
- timer_slack.effective_slack_suspend_ns is the timer slack currently used
At the moment, the values chosen and used by K^Kernel are the following:
- core processes (/dev/cpuctl), 0 ns when the system is active, 50000 ns when the system is suspended
- foreground apps/processes (/dev/cpuctl/apps), 0 ns when the system is active, 250000 ns when the system is suspended
- background non interactive apps/processes (/dev/cpuctl/apps/bg_non_interactive), 100000000 ns when the system is active, 250000000 ns when the system is suspended
1) By directly editing one of the file written above inside /dev/cpuctl and inside each hierarchy subfolder, by setting the preferred value (note that set value will be lost after a reboot/shutdown)
2) By using Terminal Emulator (note that set value will be lost after a reboot/shutdown)
- Open Terminal Emulator
- Run these commands to set the minimal timer slack for generic and core apps/processes
Code:
su
echo 0 > /dev/cpuctl/timer_slack.min_slack_ns
echo 50000 > /dev/cpuctl/timer_slack.min_slack_suspend_ns
- Run these commands to set the minimal timer slack for apps/processes in foreground
Code:
su
echo 0 > /dev/cpuctl/apps/timer_slack.min_slack_ns
echo 100000 > /dev/cpuctl/apps/timer_slack.min_slack_suspend_ns
- Run these commands to set the minimal timer slack for apps/processes in background and non interactive
Code:
su
echo 100000000 > /dev/cpuctl/apps/bg_non_interactive/timer_slack.min_slack_ns
echo 250000000 > /dev/cpuctl/apps/bg_non_interactive/timer_slack.min_slack_suspend_ns
LowMemoryKiller management of not killable processes
This feature allows to define processes and system processes white-lists filled with the preferred process names and to not be killed by lowmemorykiller, unless it is absolutely necessary.
This feature exposes four new lowmemorykiller parameters:
- donotkill_proc, is the flag to enable / disable this feature for the processes chosen by the user
- donotkill_sysproc, is the flag to enable / disable this feature for the system processes chosen by the user
- donotkill_proc_names, is the list of process names (comma separated) chosen by the user to be preserved from killing
- donotkill_sysproc_names, is the list of user system process names (comma separated) chosen by the user to be preserved from killing
When the lowmemorykiller needs to free ram, it will first kill the processes not included inside the two process name lists chosen by the user.
If there are no more standard killable processes, then it will be necessary to kill one of the processes included inside one of the two white-lists, to prevent system hangs, slowdowns, etc.
How to customize the white lists of processes to preserve from killing:
On K^Kernel the feature is enabled by default and the provided processes white lists are the following:
- donotkill_proc_names = "com.cyanogenmod.trebuchet,com.anddoes.launcher,com.teslacoilsw.launcher,org.adwfreak.launcher,gtp.nextlauncher,android.inputmethod.latin,com.touchtype.swiftkey"
this means that Trebuchet Launcher, Apex Launcher, Nova Launcher, ADW Launcher, Next Launcher, stock keyboard and SwiftKey keyboard will be preserved from killing
- donotkill_sysproc_names = "android.process.acore,com.android.phone,com.bel.android.dspmanager"
this means that the system process, the phone process and DSP Manager will be preserved from killing
1) By using a customized init.d script (the custom value will be always restored after a reboot, if you don't format the system partition)
- Download the script named 80dnkp
- If the file has been saved with .txt extension (stock browser), rename it by removing the .txt extension
- Edit the file by setting your preferred status and processes list
- Copy the new file inside /etc/init.d
- Give the rwxr-xr-x permissions to the file (read, write, execution for owner, read and execution for group users, read and execution for others)
- Reboot
2) By directly editing the files inside /sys/module/lowmemorykiller/parameters (note that set values will be lost after a reboot/shutdown)
3) By using Terminal Emulator (note that set values will be lost after a reboot/shutdown)
- Open Terminal Emulator
- Run these commands if you want to enable the feature
Code:
# To enable this feature for the processes chosen by the user
echo 1 > /sys/module/lowmemorykiller/parameters/donotkill_proc
# To enable this feature for the system processes chosen by the user
echo 1 > /sys/module/lowmemorykiller/parameters/donotkill_sysproc
- Run these commands if you want to disable the feature
Code:
# To disable this feature for the processes chosen by the user
echo 0 > /sys/module/lowmemorykiller/parameters/donotkill_proc
# To disable this feature for the system processes chosen by the user
echo 0 > /sys/module/lowmemorykiller/parameters/donotkill_sysproc
- Run this command if you want to add, for example, Trebuchet Launcher (CM default launcher) and the default keyboard to the processes white list
Code:
echo "com.cyanogenmod.trebuchet,android.inputmethod.latin" > /sys/module/lowmemorykiller/parameters/donotkill_proc_names
- Run this command if you want to add, for example, the system process, the phone process and DSP Manager to the system processes white list
Code:
echo "android.process.acore,com.android.phone,com.bel.android.dspmanager" > /sys/module/lowmemorykiller/parameters/donotkill_sysproc_names
ZRAM module
As explained on Wikipedia, this feature, provided in this kernel as a standalone loadable module, increases performance by avoiding paging on disk and instead uses a compressed block device in RAM in which paging takes place until it is necessary to use the swap space on the hard disk drive.
In few words, the memory pages no more used and so to be swapped are sent to zRam device blocks, compressed and stored in memory instead of disk allowing better performance and also lower memory usage, on the other hand, a little higher amount of cpu is needed to perform compression and decompression of memory pages.
Since we have a device with a low amount of free memory, this feature could be useful to have more free ram.
How to change the size of zRam or to disable it (thanks to @ktulu84 for sharing these scripts):
To change the size of zRam (the custom value will be always restored after a reboot, if you don't format the system partition):
- Download the script named 60zram
- If the file has been saved with .txt extension (stock browser), rename it by removing the .txt extension
- Edit the file by setting your preferred zRam size (change SIZE value, default is 100 MB)
- Copy the new file inside /etc/init.d
- Give the rwxr-xr-x permissions to the file (read, write, execution for owner, read and execution for group users, read and execution for others)
- Reboot
If you want to use default zRam size, simply remove the file placed inside /etc/init.d and reboot.
To disable zRam (the custom value will be always restored after a reboot, if you don't format the system partition):
- Download the script named 60disable_zram
- If the file has been saved with .txt extension (stock browser), rename it by removing the .txt extension
- Copy the new file inside /etc/init.d
- Give the rwxr-xr-x permissions to the file (read, write, execution for owner, read and execution for group users, read and execution for others)
- Reboot
If you want to re-enable zRam, simply remove the file placed inside /etc/init.d and reboot.

FAQ - Frequently asked questions:
Q: What are the differences between EXUV and UV kernel versions?
A: The EXUV kernel versions have extremely undervolted settings for the cpu frequencies, they allows to have a very low battery drain, instead the UV kernel versions have undervolted settings a bit higher than EXUV versions, but always lower than stock kernel settings.
The EXUV kernel versions could give some problems (freezes, shutdowns, huge lags) on some devices because the cpu doesn't support too low voltage settings.
For a lower battery consumption, I suggest you to try EXUV versions first and to switch to UV versions only if you encounter one of the above mentioned problems.
Q: For v1.0 kernel builds, what are the differences between 396MB, 406MB and 416MB versions?
A: 396MB, 406MB and 416MB kernel versions have different free ram available for user space, with a higher free ram your device will work better with heavy apps, many concurrently used apps, heavy games, etc.
- 396MB versions are more stable, everything is fully working, but you could have some slowdowns with apps that require a high amount of free memory.
- 406MB versions have additional 10 MB of free ram, they are suitable for the users that use the device primarly for calls, messages, simple apps and simple games. The camera, video recording (both 480p and 720p modes) and video playback are fully working.
- 416MB versions have additional 20 MB of free ram, they are suitable for the users that use the device also with heavy apps, various concurrently used apps and games. The camera, video recording (both 480p and 720p modes) and video playback are fully working.
Q: How can I get the Performance and Developer Options entries inside Settings menu?
A: Go inside Settings -> About Phone -> Scroll down and tap 7 times on Build number (it's an Easter Egg).
Q: How can I get the log after an unexpected shutdown / reboot?
A: After an unexpected shutdown / reboot of the device, if the problem may be kernel related, you should have the /proc/last_kmsg, if so, send me that log and I'll check it to find the possible cause of the problem.
Q: How can I get the logs when I encounter strange system issues while it's running?
A: Check first if the problems could be related to an app you're using and if you changed something in the last days before facing those issues.
If the problem started after installing the kernel, then let me have you logcat and dmesg:
- Open Terminal Emulator and execute these commands:
Code:
su
dmesg > /sdcard/dmesg.txt
locat -v time -d > /sdcard/logcat.txt
- Open you preferred file manager and go inside the internal sd card partition /sdcard
- Send me the dmesg.txt and logcat.txt files, if you want zip them first
Q: How can I mount a shared Windows folder with CIFS module?
1) By using Terminal Emulator
Code:
mount -o unc=\\\\[COLOR="DarkGreen"][I]ip[/I][/COLOR]\\[COLOR="Blue"][I]share[/I][/COLOR],noserverino,username=[I][COLOR="DarkOrange"]user[/COLOR][/I],password=[I][COLOR="Lime"]password[/COLOR][/I] -t cifs //[COLOR="DarkGreen"]ip[/COLOR]/[COLOR="Blue"]share[/COLOR] [I][COLOR="DarkSlateGray"]/mnt/cifs[/COLOR][/I]
2) Downloading and using CifsManager and configuring the new share as follow:
- Share Path = ip/share
- Mount Point = /mnt/cifs/share
- Username = username
- Password = password
- Options = unc=\\\\ip\\share,noserverino
Where:
ip is the ip address of your pc where the folder is shared
share is the shared folder name
user is the user name that can access the shared folder
password is the user password
/mnt/cifs is the mount point (must be created if you'd like to use the command approach with Terminal Emulator)

Reserved, just in case...

Notorious as always. Thanks, Christopher!

Awesome!!! I'll update my W soon *_*
P.s. Happy new year!!!

Wow! I bet this is your first 2015 kernel post
Sent from my GT-S6500 using XDA Free mobile app

Wow, so fast sir. You are the king of kernel :thumbup:

Chris, you're impeccable. Thanks for support.

i download n instal this kernel, but i got some trouble when i try to find Performance Setting.
i do have Developers Setting, but for Performing Setting i can't figure it where.
sorry for my bad english
Sent from indONEsia

ka12el said:
i download n instal this kernel, but i got some trouble when i try to find Performance Setting.
i do have Developers Setting, but for Performing Setting i can't figure it where.
sorry for my bad english
Sent from indONEsia
Click to expand...
Click to collapse
There is no performance settings at the moment in cm12. As an alternative use performance control

ilusi0n_ said:
There is no performance settings at the moment in cm12. As an alternative use performance control
Click to expand...
Click to collapse
thanks for your respon
but why on Q&A first page say i can get dev setiing and perform setting with press 7 times on build number.
ok i try the apps
thank you so much
Sent from my GT-I8150 using XDA Free mobile app

ka12el said:
thanks for your respon
but buy on Q&A first page say i can get dev setiing and perform setting with press 7 times on build number.
ok i try the apps
thank you so much
Sent from my GT-I8150 using XDA Free mobile app
Click to expand...
Click to collapse
Performance settings does not appear because cyanogenmod didn't implement it when Arco compile the rom for us. In a future build, the rom will have the performance settings.

Today I get kernel wakelock from apps wakelock detector
It is "rpc_read" wakelock about 12 h
Im using your kernel, christopher
Thank you

Is it working with the latest cm12?

riyosakura said:
Is it working with the latest cm12?
Click to expand...
Click to collapse
Yes it is.

riyosakura said:
Is it working with the latest cm12?
Click to expand...
Click to collapse
I think it should not be used, because it is not in sync with the latest changes in CM12
* Waiting for the new version update .

huongthanh8690 said:
I think it should not be used, because it is not in sync with the latest changes in CM12
* Waiting for the new version update .
Click to expand...
Click to collapse
you think so? i already flashed it lol.
so far so good though.

huongthanh8690 said:
I think it should not be used, because it is not in sync with the latest changes in CM12
* Waiting for the new version update .
Click to expand...
Click to collapse
using it with no problems.

[KERNEL] [ROOT] [SM-G920F Exynos 7420] [17 Dec] SkyHigh TW 5.1.1 Kernel [v2.9]

[KERNEL] [ROOT] [SM-G920F Exynos 7420] [17 December] SkyHigh TW 5.1.1 Kernel [ v2.9 ] [Synapse ++]
WARNING
Code:
[COLOR="Red"]PLEASE SHOW RESPECT TO ACTUALLY [COLOR="PURPLE"][B]READ POSTS #1-3[/B][/COLOR]
[URL="http://forum.xda-developers.com/announcement.php?a=81"][B]XDA RULE #1 "SEARCH BEFORE POSTING"[/B][/URL] (GOOGLE, XDA & THREAD),
IF YOU DON'T LIKE A UP-FRONT "MATTER OF FACT" APPROACH,
[B]THEN DON'T BOTHER POSTING[/B]. [/COLOR]
FEATURES
Code:
* Based on official Samsung source: [URL="http://opensource.samsung.com/reception/receptionSub.do?method=sub&sub=F&searchValue=n920"]Samsung OSRC[/URL]
* ramdisk source:
[INDENT][COLOR="red"]N920F[/COLOR]XXU3QOLF[/INDENT]
* Compiled with Linaro gcc-linaro-4.9-2015.02-3-x86_64_aarch64-linux-gnu
* Linux 3.10.94
* [COLOR="red"]AUTO-ROOT binary v2.52[/COLOR] & Install busybox v1.24.1-Dorimanx
* [COLOR="Red"]KNOX WARRANTY VOID: 1[/COLOR]
* [COLOR="red"]SELinux PERMISSIVE[/COLOR] (for Titanium Backup and other apps to work correctly)
* adb insecure
* stock dt.img
* init.d script support (drop in script & set permissions to 755 or 777 and reboot)
* [COLOR="red"]DEEP SLEEP FIX[/COLOR]
* [COLOR="red"]IN-CALL REBOOT BUG "FIX"[/COLOR]
* Possible Screen Mirroring / AllShare Cast fix
* Secure storage = false (should prevent WIFI settings & passwords wiping on reboots)
* RAM management tweaks
* GearVR reported working
* [B]Synapse app support[/B] for many kernel configurations + more !!
* Many descriptions are in the app ! If you require more info, don't be lazy, please [B]SEARCH[/B] like I did ;)
SYNAPSE FEATURES
ABOUT
PayPal Donation link
SkyHigh kernel thread link
Up time
Total
Sleep
Awake​
A57 CPU
CPU temperature
A57 big Cores Frequency Scaling
live frequency
MAX: 2400 MHz (stock 2100 MHz is default)
MIN: 500 MHz (stock 800 MHz is default)​
CPU governors
interactive (default)
on-demand
conservative
userspace
performance​
CPU governor tunables
A57 VOLT
HPM voltage control
A57 big Cores voltage control
A53 CPU
A53 LITTLE Cores Frequency Scaling
live frequency
MAX: 1600 MHz (stock 1500 MHz is default)
MIN: 200 MHz (stock 400 MHz is default)​
CPU governors
interactive (default)
on-demand
conservative
userspace
performance​
CPU governor tunables
A53 VOLT
HPM voltage control
A53 LITTLE Cores voltage control
CPU MULTICORE
Power Aware Scheduling control
HMP LITTLE Packing
Exynos Core Control Interface (choose 1 > 8 cores online)
PEWQ (Power-efficient Workqueues) control
GPU
GPU stats
Current clock freq
Live Frequency Utilization (load)
Time in state​
GPU power policy control
coarse_demand (default)
demand
always_on​
GPU frequency scaling
Max freq control to 852 MHz (700 MHz is default)
Min freq control to 100 MHz (stock 266 MHz is default)​
GPU Governor
Default
Interactive (default)
Static
Booster (more graphic and benchmark performance)​
GPU Interactive Governor tunables
highspeed clock
highspeed load
highspeed delay​
GPU VOLT
HPM voltage control
GPU voltage control
THERMAL
CPU thermal control
normal temp
critical temp​
GPU thermal control
temp levels 1 > 5
throttling freq levels​
Memory thermal control
normal temp
critical temp​
ISP (Image Signal Processor) thermal control
temp levels 1 > 5​
BUS
Memory Bus HPM voltage control
Memory Bus voltage control
Internal Bus voltage control
ISP (Image Signal Processor) voltage control
IO
I/O Schedulers
BFQ (tweaked for SSD)
DEADLINE (tweaked for SSD)
FIOPS
CFQ = default (tweaked for SSD)
NOOP
ROW (tweaked)​
Storage read-ahead (256 KB)
General IO tuneable
Add random
IO stats
Rotational
No merges
RQ Affinity
NR requests​
I/O scheduler tunables
MEMORY
Memory state
Total
Free​
Low Memory Killer Profiles
Low
Medium
Custom (recommend)
Default (default)
Aggressive
Exterminate​
Low Memory Killer minfree tuning (OOM LMK)
Samsung SPCM Service control (Enabled = default/stock)
Ultra Kernel SamePage Merging (UKSM)
UKSM stats
Scan Delay Interval
UKSM Governor
Max CPU consumption​
Dynamic FSYNC control (enabled)
Dynamic dirty page writeback control (enabled)
Dirty writeback active
Dirty writeback suspend​
Virtual Memory
Adaptive Dirty Background Ratio on suspend / resume
Adaptive Dirty Ratio on suspend / resume
Drop caches (Clear VFS cache after boot)
Laptop Mode
Swapiness
Adaptive vfs_cache_pressure on suspend / resume​
ADVANCED
Entropy (max 4096)
Gentle Fair Sleepers control (disabled)
Arch Power control (enabled)
randomize_va_space control
POWER SUSPEND
Modes:
Autosleep
Userspace
Display Panel
Hybrid (Autosleep + Display Panel) = default​
PowerSuspend State (enable only with Userspace mode set)
Version push button
AUDIO
(Sound Control by AndreiLux)
Jack media volume control
L/R channel volume
mono mixer​
Speaker volume control
Earpiece volume​
Main Equalizer
Advanced Stereo Equalizer
SCREEN
sweep2sleep control
NETWORK
TCP congestion control
All available enabled.
Default = westwood+​
Screen mirror/allshare cast fix control (enabled)
Clean WIFI Lease
WiFi Power Mode While Screen-On/Off
Force Off
Off
Fast (default = screen ON)
Max (default = screen OFF)
WiFi DTIM Interval While Screen-On/Off​
RX wakelock timeout control
TCP/IP network security
3G DNS speed & security tweak
Google
OpenDNS
Comodo, Level3
Norton_DNS
Smart_Viper​
GPS time-zone
Original
Asia
Europe
Oceania
North America
South America
Africa​
IPV6 optimistic detection
SECURITY
KNOX control
NO_ACTION (default)
Disabled
Enabled​
SELinux
Live status​
BATTERY
Battery info
Charging controls
HV power supplies
A/C Mains
A/C Mains (screen-on)
Standard downstream port
Dedicated charging port
Charging downstream port
Accessory charging adapter
MHL power
Wireless power​
Battery SCALING calibration (fuel gauge reset)
LED
LED disable control
LED Fade-in/out Time Period
LED Fade control
Fade-in
Fade-out​
Test notification push button
Stop notification push button
FS (File System)
Display FS Type
FS Controls
remount System r/w r/o
remount RootFS r/w r/o​
Scrolling cache control
Optimise Databases (SQLite3)
FSTrim lagfix
Wipe options
cache reboot
dalvik-cache reboot
cache & dalvik-cache reboot​
Clean up
clipboard cache
/data/tombstones
/data/anr logs
/data/dropbox logs
lost+found​
USB
USB status
USB mode selection
MTP
PTP
CD_ROM (drivedroid support)
USB_Keyboard-Mouse​
BACKUP & RESTORE
Name - Restore - Delete - Backup
profiles
kernel image​
LOGS
Android Logger control (enabled)
LogCat​
Kernel Logger control (enabled)
dmesg
last_kmsg​
REBOOT
Reboot device
Recovery Mode
Download Mode
Power Off
Clear Synapse Data & Reboot
Restart Synapse
INFO
Reduced logging
exFAT FS support
NTFS R/W support with app
CIFS support (not tested)
ISO 9660 CDROM & UDF FS support
Frandom
mount partitions NOATIME and NODIRATIME by default
Entropy tweaks
Increased boot frequency
Power-efficient workqueue (PEWQ) efficiency patches
CLEANCACHE & ZCACHE
Microsoft X-BOX gamepad controller in-built module
Slub tweaked
Much more - check source commits & Synapse
CREDITS
My family !!
@Chainfire - root & SuperSU / @Manh_IT - auto-root method
@AndreiLux - years of support for Exynos development and his various kernel features + Synapse app and UCI code
@halaszk88 - patches and Synapse code I adapted to many of my kernels
@dorimanx - BusyBox and various ramdisk tweaks/ideas
@apb_axel - I adapted and used many of the Synapse controls to suit my kernels
XDA
Samsung OSRC
and many others!
check github source credits
IF I'VE FORGOTTON ANYONE, PLEASE DON'T BE SHY AND SPEAK UP, THANKS
XDA:DevDB Information
SkyHigh Galaxy S6 Exynos 7420 Kernel, Kernel for the Samsung Galaxy S6
Contributors
UpInTheAir
Source Code: https://github.com/UpInTheAir/SM-N920
Kernel Special Features: Synapse ++ | EXT4 | exFAT | NTFS | CIFS
Version Information
Status: Testing
Created 2015-12-17
Last Updated 2015-12-17

Warning - ChangeLog - Requirements - Installation - Download - Source
** DISCLAIMER : FLASH AT YOUR OWN RISK **
WARNING :
Code:
[COLOR="Red"]* Under-volting can cause instability
* Over-clocking can cause freeze/reboot, heat & damage to CPU, GPU or other hardware
* Any customizations may void warranty
* May not be suitable for your device or customizations
* UpInTheAir is NOT responsible, the person you see in the mirror is !![/COLOR]
CHANGE-LOG
[v2.9] - 14 December 2015
variant:
Korean variant support discontinued unless sources become compatible with all SkyHigh variants. v2.8 is the last for now
source:
BUILD: fix invalid binary created for .tar.md5 archive
Revert " Source: merge N920SKSU2AOK5"
Cause of boot and stability issues with T variants​
config: remove MPTCP from reverted N920SKSU2AOK5 source
[v2.8] - 13 December 2015
ramdisk:
Synapse: update sweep2sleep description
Ensure PowerSuspend State is DISABLED​
su: update BINARY to BETA-SuperSU-v2.52 (latest stable beta)
1. Unroot (SuperSU APP > settings > "full unroot")
2. Reboot
3. Install SuperSU app from Play Store
4. NOTHING else to do !!​
init.rc: prevent override of dirty_background_ratio
Synapse: change dirty ratios default description & clean up
Synapse: adjust for adaptive dirty_background_ratio & adaptive dirty_ratio
Synapse: disable drop_caches on boot
improved UI performance as cache does not have to rebuild on every boot. optional in Synapse​
source:
Revert duplicate code from my mistake
Revert "cpufreq: Remember last policy min/max on cluster restart"​
Linux 3.10.93 > 3.10.94
Source: merge N9200ZHU2AOKA
Source: merge N920SKSU2AOK5
ARM: 8429/1: disable GCC SRA optimization
Support for GCC 6.0 toolchain
mm: Increase Dirty Ratios (battery)
mm: Adaptive Dirty Background Ratio & Dirty Ratio for suspend/resume (battery) my own
dirty_background_ratio 20-resume / 60-suspend (fixed)
dirty_ratio 40-resume / 95-suspend (fixed)​
config: enable ADAPTIVE_DIRTY_BACKGROUND_RATIO & ADAPTIVE_VM_DIRTY_RATIO
mm: Dynamic Page Writeback: fix compile if not enabled in config
[v2.7] - 09th December 2015
variant:
add SM-G9287C support with G9287CDXU2AOK1 ramdisk base​
ramdisk:
Synapse: NETWORK: add IPV6 Optimistic Detection controls & enable
Synapse: NETWORK: modify layout of WiFi DTIM Interval description
Synapse: NETWORK: add GPS Time Zone for faster GPS lock
Synapse: SCREEN: fix up sweep2leep description
Synapse: USB: tidy up USB live status
Synapse: USB: add live DNS address
Synapse: USB: add title to live DNS address
Synapse: IO: add NR Requests control
Synapse: A57/A53: show live freq for all A57 & A53 cores
Synapse: A57/A53: make default CPU frequencies static so they are not overridden
Synapse: A57/A53: move A57, A53 & GPU voltage controls to separate tab
Synapse: A57/A53: use the new renamed ren_max_freq (you need to use Synapse to control CPU MAX values - and any other SkyHigh features !!)
Synapse: A57: correct core display for temp sensors
Synapse: MEMORY: Adaptive vfs_cache_pressure on Suspend / Resume
Synapse: MULTICORE: remove HMP threshold controls. They are dynamic
N9200 ramdisk: update to N9200ZHU2AOKA
N920K ramdisk: add SkyHigh version
source:
BUILD: small fixes to build scripts
BUILD: fix up ramdisk_fix_permissions.sh
BUILD: add separate SM-N920K support
dts: N920S/K/L update from N920SKSU2AOK5 source
cpufreq: rename scaling_max_freq to ren_max_freq (fix by @arter97 to prevent DVFS override set CPU MAX freq)
fs/dcache.c: adaptive vfs_cache_pressure on suspend / resume (100% screen on & 20% static screen off)
fs: make ADAPTIVE_VFS_CACHE_PRESSURE compile optional
Revert various Nvidia power efficiency patches (Testing to resolve random System UI restart to lock screen)
config: enable ADAPTIVE_VFS_CACHE_PRESSURE
A53: allow max to 1600 MHz (default/stock 1500 MHz)
A53: increase boot frequency to 1500 MHz
[v2.6] - 05 December 2015
variant:
add SM-G928T/W8 variant support
ramdisk:
Synapse: SCREEN: add sweep2sleep control
Synapse: USB: add USB storage controls
MTP
PTP
CD ROM iso image (drivedroid support)
USB Keyboard / Mouse​
Synapse: clean up
source:
net/neighbour: queue work on power efficient wq
sched/fair: Implement fast idling of CPUs when the system is partially loaded
arm64: Improve power efficiency through load/store exclusive usage (Nvidia power efficiency patch set)
thread_info: Remove usage of relaxed calls in sched header
hrtimer: Replace usages of hrtimer_callback_running with relaxed version
aio: Skip timer for io_getevents if timeout=0
touchscreen: add sweep2sleep
sweep2sleep: adjust for 1440 x 2560 display
usb: gadget: check for accessory device before disconnecting HIDs
drivers: usb: Use Android device as USB keyboard/mouse
usb: gadget: mass_storage: added sysfs entry for cdrom to LUNs
[v2.5] - 03 December 2015
variant:
add SM-G928C/F/I/G, SM-N920P, SM-N920S/K/L & SM-N9200 variant support
ramdisk:
BUILD: auto build archives for each variant selection
ramdisk bases:
SM-N920S/K/L N920SKSU2AOK5
SM-N9200 N9200ZHU2AOJ9
SM-N920P N920PVPU2AOI6​
Synapse: fix up generate
Synapse: fix up fuel-gauge reset
source:
various power efficient workqueue patches
sched: LOAD_FREQ (4*HZ+61) avoids loadavg Moire
ext4: Speedup WB_SYNC_ALL pass called from sync(2)
mm: pass readahead info down to the i/o scheduler
mm: fix aio performance regression for database caused by THP
fixup! mm: fix aio performance regression for database caused by THP
fts_ts: fix a stupid typo by Samsung
CHROMIUM: cpufreq: interactive: calculate load before freq change
block_dev: implement readpages() to optimize sequential read
[v2.4] - 30th November 2015
variant:
add SM-N920G variant support
ramdisk:
update SM-N920-I/G ramdisk N920GDDU2AOJ5
/sbin/SkyHigh.sh: Enable Main Equalizer by default (Fixes bug where no audio from earphones whilst in-call)
Synapse: MEMORY: change KSM > UKSM controls
source:
UKSM: 0.1.2.3-for-v3.10.ge.46
UKSM: fix compile errors
UKSM: disable by default
config: enable UKSM
toolchain: gcc-linaro-4.9-2015.02-3-x86_64_aarch64-linux-gnu
Makefile: add optimizations
dts: N9200_HK update from N9200ZHU2AOJ9 source
cpufreq: Mod perms so they are settable in apps
[v2.3] - 29th November 2015
source:
Fix in-call reboot
Revert "toolchain: change to Linaro GCC 5.2.1 20151005". (Back to Linaro 4.9.3 20141031)
Revert "ufs: fix compilation warnings"​
power: process: drecrease time to enter sleep
futexes: Increase hash table size for better performance
cpufreq: Optimize cpufreq_frequency_table_verify()
[v2.2] - 28th November 2015
ramdisk:
Update N920C/CD/8 to N920CXXU2AOK7
Synapse: NETWORK: add WiFi Power Mode & DTIM Interval controls for screen ON/OFF
Synapse: NETWORK: add Wireless wakelock timeout control
default.prop: re-enable Samsung SPCM Service (removed entry)
Synapse: MEMORY: add Samsung SPCM Service control (Enabled = default/stock)
source:
Source: SM-N920T_NA_LL_Opensource N920TUVU2COJ5
drivers/video/exynos/Makefile: Fix compile warnings for non-supported drivers
config: enable LCD_HMT
Linux 3.10.90 > 3.10.93
Fix compile errors with GCC 5
crypto: pcomp - Constify (de)compression parameters
crypto: testmgr - Wrap the LHS in expressions of the form !x == y
ufs: fix compilation warnings​
toolchain: change to Linaro GCC 5.2.1 20151005
bcmdhd4359: WIFI PM support
config: enable BCMDHD_WIFI_PM
tcp: enable sockets to use MSG_FASTOPEN by default
bcmdhd: reduce rx wakelock timeout via sysfs node
net: wireless: bcmdhd4359: reduce kernel logging
Drivers: sensorhub: reduce wakelock time
[v2.1] - 17th October 2015
boot.img:
repack with stock dt.img (flash over v2.0 if you have audio issues)
[v2.0] - 17th October 2015
ramdisk:
Synapse: add BACKUP RESTORE section for save/restore profiles & boot.img to /sdcard/SkyHigh folder (from my older SkyHigh kernels on other devices, modified and adapted to suit from apb_axel and neobuddy89)
Synapse: FS: add FSTrim push button
/sbin: replace fstrim with (PIE) binary (from arter97 git)
[v1.9] - add SM-N9208_SEA variant support 16th October 2015
[v1.9] - 15th October 2015
ramdisk:
boot.img: disable boot time security check "KERNEL IS NOT SEANDROID ENFORCING" (kernel is still permissive)
Synapse: disable CortexBrain as not needed for in-call reboot bug "work-around" any more. It's fixed !! Intend to add other options here in future.
source:
config: disable unused FS support
build scripts: clear ccache instead of clean
FIX IN-CALL REBOOT BUG: toolchain: change to gcc-linaro-4.9-2014.11-x86_64_aarch64-elf
The recommend Google ARM Toolchain GCC aarch64-linux-android-4.9 causes general stability and in-call reboot issues​
[v1.8b] - 13th October 2015
ramdisk:
Synapse: MEMORY: add Dynamic management of dirty page writebacks control (screen on/off)
Synapse: CPU MULTICORE: add Power Aware Scheduling control - enabling gives better battery (default = disabled for performance)
Synapse: minor adjustments to layout and descriptions.
default.prop: add some experimental RAM management tweaks (thanks to @mikeyinid for the suggestions)
source:
sched: HMP: set Power Aware Scheduling off by default (previously enabled by default in patch)
GPU: set max freq to 700 MHz as default (stock)
cpufreq: Break out early if freq equals to target_freq
PM / sleep: unregister wakeup source when disabling device wakeup
tick: don't update idle time if cpu offline
slub: fix kmem_cache_shrink return value
mm: slub: fix format mismatches in slab_err() callers
a bunch of SELinux patches
mm: Dynamic management of dirty page writebacks
kernel.h: fix error when compiling N9208_SEA
[v1.7b] - 12th October 2015
ramdisk:
Synapse: MEMORY: add Dynamic FSYNC control
Synapse: LOGS: add Android logger control (enabled for logcat)
/sbin/cortexbrain-tune.sh: some adjustments to watchdog control
source:
xz: tweaking kernel compression (not used)
AIO: Don't plug the I/O queue
fs/dyn_sync_cntrl: dynamic Fsync control v1.5
fs/dyn_sync_cntrl: on by default
logger: Add sys fs kernel interface to configure Android logger & modify for Synapse
writeback: fix race that cause writeback hung
timer: optimize apply_slack()
writeback: Fix occasional slow sync(1)
writeback: fix writeback cache thrashing
CHROMIUM: mm: Fix calculation of dirtyable memory
mm: Optimized SLUB memory allocator
arm64: dcache: select DCACHE_WORD_ACCESS for little-endian CPUs
Linux 3.10.61 > 3.10.90 (took a lot of time)
Revert "powersuspend: add screen on/off hooks" from hotplug
decon: add powersuspend hooks
fips: fix whitespaces
arm64: crypto: increase AES interleave to 4x
cpufreq: Remember last policy min/max on cluster restart
mm: vmscan: If kswapd has been running too long, allow it to sleep
[v1.6b] - 9th October 2015
boot.img:
re-pack with custom generated dt.img
ramdisk:
Synapse: HMP: rename to CPU MULTICORE
Synapse: CPU MULTICORE: add PEWQ (Power Efficient Work-queues) for better battery at slight cost of performance.
Synapse: POWER SUSPEND: add PowerSuspend controls
Synapse: MEMORY: add vfs_cache_pressure control
default.prop: insecure adb again
init.rc: remove more code to prevent IO scheduler override
source:
config: add variants and sync to v1.5b
Remove obsolete build script and add build script / tools to build custom dt.img
config: N920C dtb exynos7420-noblelte_eur_open_09
config: N920I dtb exynos7420-noblelte_eur_open_09
sched/fair: Fix small race where child->se.parent,cfs_rq might point to invalid ones
cpufreq: Introduce new relation for freq selection Introduce CPUFREQ_RELATION_C
cpufreq: interactive: use new CPUFREQ_RELATION_C
int_sqrt.c: Correction square root algo with naming
int_sqrt: Improve 3x faster integer sqrt.
workqueue: Fix permission for power_efficient workqueue
a bunch of workqueue patches
jiffies conversions: Use compile time constants when possible
sched/completion: Add lock-free checking of the blocking case
sched: Remove one division operation in find_busiest_queue()
sched/fair: Optimize find_busiest_queue()
kthread_work: wake up worker only when the worker is idle
sync: don't block the flusher thread waiting on IO
mm: Clear page active before releasing pages
makefile: Add SoC-specific compile target
sensorhub: fix compile warning for SM-N9208
workqueue: disable PEWQ by default
config: enable WQ_POWER_EFFICIENT_DEFAULT
PowerSuspend: patch powersuspend driver up to v1.7 & modify to suit
powersuspend: call screen on/off hooks with hotplug (panel hooks)
powersuspend: add power_suspended boolean for global access
config: enable POWERSUSPEND
config: enable TIMA_LKMAUTH and also missing TIMA for SM-N920S
[v1.5b] - 6th October 2015
ramdisk:
Synapse: CORTEX: add CortexBrain to control screen on/off functions. Enabling this FIXES in-call reboot bug (actually a solution - not a "fix"). Thanks to Dorimanx & halaszk88 for the orignial scripts which I chopped to pieces into my SM-N915S kernel .
/sbin: add CortexBrain script
/sbin/SkyHigh.sh: start CortexBrain on boot
source:
Block: add FIOPS I/O scheduler
FIOPS: forward port for use on 3.10 Linux
config: enable IOSCHED_FIOPS
block: sysfs: allow non superusers to change I/O scheduler
block: Reserve only one queue tag for sync IO if only 3 tags are available
blk-throttle: check stats_cpu before reading it from sysfs
cfq-iosched: fix the setting of IOPS mode on SSDs
Block: add BFQ-v7r8-I-O-sched-for-3.10.8+
config: enable IOSCHED_BFQ
block: bfq-iosched: tuning for SSD
a lot of block commits to support ROW IO scheduler
Block: add ROW I/O scheduler
block: row: add magic values
config: enable IOSCHED_ROW
sched/cputime: Do not scale when utime == 0
[v1.4b] - 5th October 2015
ramdisk:
Synapse: THERMAL: add CPU, GPU, MIF & ISP thermal controls
Synapse: BATTERY: add charge controls (adapted from AndreiLux)
source:
GPU: allow min freq to 100 / 160 MHz
GPU: allow max freq to 772 / 852 MHz
GPU: increase throttling levels for better performance
GPU: increase max allowable voltage
GPU-MALI-T760: Added GPU THERMAL control interface
ARM: Mali-T760: disabled min/max lock. TouchWiz use this, so we can use normal DVFS with this patch
drivers/cpufreq: fix Samsung typos
exynos7420_tmu: add configurable interface
config: increase kernel log size so it is not overwritten
DEBUG: capture beginning of the crash in last_kmsg
config: enable building of dtb
[v1.3b] - 4th October 2015
updater-script:
create basic flashable zip for custom recovery
ramdisk:
Update N920T to N920TUVU2COI5
Synapse: SCREEN: remove mDNIe colour controls
init.rc: ensure IO schedulers are not overridden
source:
remove video: exynos: Decon: Add mDNIe colour control (causing display colour issues. Maybe take a look another time)
[v1.2b] - 3rd October 2015
ramdisk:
Update N920C to N920CXXU1AOI1
Synapse: LED: add LED fade-in/out controls
Synapse: SCREEN: add mDNIe colour controls (AndreiLux)
Synapse: HMP: add HMP LITTLE Packing control (Power savings at a slight cost to performance)
Synapse: HMP: add Exynos Core Control Interface (choose 1 > 8 cores online)
init.rc: set randomize_va_space to 0 (disabled) for improved GUI responsiveness
init.rc: fix Samsung syntax error: setprop sys.sysctl.compact_memory 0
disable some unnecessary security stuffs (arter97)
default.prop: (trying to fix errors and panic)
remove FHA for now whilst testing for reboot
various security additions/removal testing for reboot​
source:
Source: merge in SM-N920C_SEA_LL N920CXXU1AOI1
Trying to fix some some errors and panic
sysrq: Emergency Remount R/O in reverse order
Revert "security: SELinux: Avoid enabling enforcing by conventional flag
Revert "security: SELinux: revert Samsung hard enforcing
selinux: loose everything
config: more TIMA adjustments​
video: exynos: Decon: Add mDNIe colour control
video: exynos: Silence mDNIe control hook
cpufreq: Silence dm_hotplug debug
config: compile SCHED_HMP_LITTLE_PACKING
HMP: disable HMP LITTLE packing (default)
LED: add LED fade-in/out control
Dynamic CPU Hotplug: exynos-interface from Universal5410
dm_cpu_hotplug.c: fix compile error
[v1.1] - 30th August 2015
ramdisk:
Synapse: INFO: added asv_summary
Synapse: GPU: added GPU freq scaling MIN/MAX controls
init.rc: added some boot defaults (ensure stock CPU & GPU freqs)
source:
A57: allow max 2400 MHz & min 500 MHz
A53: allow min to 200 MHz
cpufreq: Add kt files and build it
cpufreq: Set global var screen_is_on when screen goes on and off
gpu: Add code to allow user to control min and max GPU Mhz - @ktoonsez
[v1.0] Initial Release - 29th August 2015
A lot of credit (as always) goes to @AndreiLux for various source commits, Synapse app and UCI support and more !
REQUIREMENTS
Variant support for:
SM-G920F​
FOR BUG REPORTING: Stock UNMODIFIED TouchWiz (TW) 5.1.1 ROM (this means no Xposed or tweaks etc)
Custom recovery i.e.. TWRP
INSTALLATION
Uninstall any CPU control apps, tweaks and init.d scripts etc.
Recommend: Disable or remove KNOX (you can disable with Synapse once kernel is flashed)
Install Synapse app from Google Play and rate it ☆☆☆☆☆ !!
Device Settings:
Enable Developer Options > OEM UNLOCK
If flashing from any custom kernel with Synapse app > Device settings > Applications > Synapse > Force Stop > clear data​
If not installed > Install SuperSU from Google Play:
Boot into custom recovery and flash SkyHigh_kernel____.zip FOR YOUR DEVICE and reboot
After boot:
a) wait at least 120 secs to stabilize
b) Open Synapse
c) Tap "Understood"
d) DO this step so some defaults are set !!
1. tap the square menu button top right hand corner
2. tap the three dots button
3. "select all globally"
4. tap the back button next to it
5. apply​
DOWNLOADS
SM-G920F [ v2.9 ] READ THIS >>>>> FIRST [ v3.0 ] RELEASE IS TOMORROW
________________________________________________________________________
SOURCE
ALL KERNELS COMPILED WITH SAME SkyHigh SOURCE !!
Github
.

Help and FAQ
THREAD RULES & PROTOCOLS FOR THIS DEVELOPMENT THREAD:
I MIGHT NOT HAVE YOUR DEVICE variant and or able to reproduce your "issue". With this in mind, without providing as much information as possible, and resetting your device to a stable unmodified baseline, any potential troubleshooting or logs could be meaningless. So please follow the guidelines set out below. Thanks
BY POSTING YOUR ISSUES IN THIS THREAD, YOU ARE AGREE TO HELP YOURSELF FIRST BY PROVIDING INFO REGARDING:
Code:
1. DEVICE MODEL ?
2. ROM and firmware version (build number, boot-loader etc) ?
3. EXACT steps taken to reproduce YOUR issue
4. Screen-shots (if applicable)
5. Did you read Posts #1-3 completely?
6. Did you search the thread, XDA or GOOGLE?
7. Did you follow the install instructions EXACTLY?
8. What was your previous kernel?
9. Do you have any other known kernel tweaking apps, scripts or mods? ([B]remove them[/B]). [COLOR="Red"]This includes Xposed etc[/COLOR]
10. Try older kernel (if available)
11. Factory reset ?
12. Try latest stock [B]UNMODIFIED[/B] firmware (without custom ROM - if you have installed) and factory reset
13. Delete your ROM BusyBox (kernel uses it's own in /sbin)
ONLY IF YOU HAVE TRIED SUGGESTIONS ABOVE:
Turn on logging in Synapse and save logs AT TIME OF ERROR. AND post together with ALL the above information.
ELSE, DON'T WASTE MY TIME, YOU WILL BE IGNORED AND/OR POST REPORTED !!
THANK YOU :good:
CAN I BUILD A KERNEL FOR YOUR __XX DEVICE ?
I will not build for any device that I can not compile using SAME source, personally test method or debug. Some device variants can compile with same source.
If you have any of the following, please post your LATEST stock boot.img along with the firmware version you extracted it from.
N920R4​
Download the full firmware package from either sammobile.com or samsung updates.com (1.5+ GB )
"NO UCI SUPPORT"
It's a ROM busybox compatibility issue
Three choices:
Device > settings > applications > Synapse > force close & wipe data and REBOOT
OR
Remove your ROM busybox from /system xbin and /system/bin (Synapse will use the kernel busybox in /sbin).
Force stop Synapse and delete app data (device settings > applications)
Re-flash kernel as per Installation Instructions
OR
Try install a different busybox
Force stop Synapse and delete app data (device settings > applications)
Re-flash kernel as per Installation Instructions
STUCK ON SAMSUNG BOOT LOGO AFTER FLASH
Ensure you flashed the correct kernel for your device model
Ensure your download is not corrupted. Check MD5 hash or re-download
Your current base firmware (ROM, boot-loader version etc.) may be incompatible - UPDATE to latest with Odin and try again.
CM SUPPORT
Read Post #12
"Unauthorized actions have been detected, reboot to undo changes"
As it's a common warning found with all KNOX enabled android devices, you would have found the answer by Google search and also that it is actually unrelated to kernel and also unrelated to this kernel development..............
It is caused by the process of rooting/modifying your device. Unless you use KNOX, don't worry.
[Q] How to disable
[A] Freeze or delete your KNOX & Security related apps/processes manually (using root explorer or titanium backup (pro) or use Synapse > Security > disable KNOX
CAN I USE OTHER KERNEL CONTROL APPS
No, many features and options won't be available. Remove all other control apps to avoid conflicts !
Synapse is the recommended and has everything you need
BATTERY TIPS
Try enable some of the CPU MULTICORE features in Synapse (slight performance cost):
Power Aware Scheduling
HMP LITTLE Packing
PEWQ (power-efficient workqueue)
Increase the HMP Up threshold a little
PERFORMANCE TIPS
LATER
RANDOM REBOOT
Don't UV or UC CPU or GPU
Use SkyHigh defaults
Use a stock UNMODIFIED ROM for your device variant
No tweaks, Xposed or other CPU control apps installed
ASV_GROUP (ALL DEVICES ARE NOT CREATED EQUAL)
http://forum.xda-developers.com/showpost.php?p=61579949&postcount=202
CAN I INCLUDE SkyHigh KERNEL IN MY ROM
Although I do appreciate your contribution here, if you could please do not include my kernel in any ROM package etc. This policy goes for anyone.
Having my kernel distributed outside my development thread just removes a lot of credit and more importantly, constructive user feedback that could be helpful to my development or user issue.
DOWNLOAD LINK NOT WORKING
I want to keep this project all in one place - ☆☆ NO MIRRORS ☆☆
Please try again in a few minutes
POOR CPU/GPU BENCHMARK or GRAPHICS PERFORMANCE
Disable any CPU MULTICORE options in Synapse
Allow the device to cool. Repetitive testing will heat the device hardware and invoke thermal throttling and lead to decreased benchmark.
HIGH CPU/GPU OC >> excessive heat >> thermal throttling >> reduced clock frequency >> DECREASE PERFORMANCE
BACKUP & RESTORE
DO NOT restore profiles from different kernel version
If the backup isn't visible, reboot device and ensure for have "synapse boot completed" message. Otherwise synapse won't read the file.
DYNAMIC MANAGEMENT OF DIRTY PAGE WRITEBACKS
* [Christopher83]
This feature allows to have two different intervals for dirty page
writebacks and to dynamically manage them when the system has been
resumed (it's active) or when has been suspended.
Three new procfs parameters are exposed inside /proc/sys/vm path:
- dynamic_dirty_writeback is the activation status of this feature,
set 1 to enable it, set 0 to disable it and use the standard behaviour
- dirty_writeback_active_centisecs is the interval for the dirty page
writebacks when the system is active (screen on)
- dirty_writeback_suspend_centisecs is the interval for the dirty page
writebacks when the system is suspended (screen off)
This feature is in part inspired on Francisco Franco's patch:
https://github.com/franciscofranco/mako/commit/34d79548cf16b69c7d0154836018e7f258a22947
Click to expand...
Click to collapse
TCP/IP NETWORK SECURITY
* Thanks to zeppelinrox & V6SuperCharger
Hardening the TCP/IP stack to SYN attack
Bump up tw_buckets in case we get DoS'd
Ignore pings
Don't cache connection metrics from previous connection
Don't pass traffic between networks or act as a router
Enable spoofing protection (turn on reverse packet filtering)
Don't accept source routing
Don't accept redirects
- Further reading:
http://www.cyberciti.biz/faq/linux-kernel-etcsysctl-conf-security-hardening
http://www.symantec.com/connect/articles/hardening-tcpip-stack-syn-attacks
CHROMECAST - STREAMING PROBLEMS
* Thanks to @AtLmd Post
Lock screen MUST be enabled (simple screen lock swipe) I don't know why but it breaks the chromecast app's ability to resume smoothly if switched off
Synapse > Network > DTIM (both screen ON & OFF) = 1
Synapse > Network > WIFI Power Mode (screen OFF) = FAST
.

UpInTheAir said:
There is no link yet. You didn't bother to read the link right next to it ?
Click to expand...
Click to collapse
Placeholder threads aren't allowed on XDA. Please let me know when you have a link to post for download. Until then, thread closed.
Thread Closed
Razvan
Forum Moderator