[KERNEL] Joey Kernel (Google Edition, Android 4.4) / Kangaroo Kernel (Android 4.4.2)

*****v138*****20 August*****

Kangaroo Kernel v138 (4.4.2 ROMs only!)
.patch to upstream 3.4.103
.overclock the GPU to 487MHz. I added an extra step, not replaced what we had (see below)
.disable some more debug (less wastage of energy for greater battery life)
.disable F2FS, who even knew it was here anyway
.updates to kernel processes from CAF/upstream
.lower max i2c clock to 384KHz, to save battery
.minor updates to ONDEMAND gov from tiny4579/stratosk
.import ULTRASOUND audio drivers from latest CAF. We are using ULTRASOUND_A, made for msm8960 (improves audio playback)


*****v132*****12 August*****
.cleaned up touchscreen drivers and removed whitespaces
.build version is changed slightly to show kangaroo kernel mkiii, to differentiate between 4.4.3
.cleaned up thermal drivers since last release
.some changes to thermal algorithm to be more reliable and more accurate
.tuned thermal for a bit cooler (see below)
.remove some debugging in sched (less wasted energy)
.misc optimizations/updates for compression/decompression (more reliable, ref. cl3kener git)
.misc optimizations/updates for CPUFREQ
.updated RANDOM32 driver from Linux 3.16.y kernel
.updated RANDOM driver from Linux 3.16.y kernel (see below, ref. dorimanx git)
.ported new random driver for use on m7 s600 (me)
.cleaned up vibrator driver (more optimized and usable code now)
.lower default 2w vibration to 18, down from 20
.SMARTMAX: use new relation_C to better choose frequencies
.PRESERVATIVE: use new relation_C to better choose frequencies
.upstream improvements to kernel sync drivers (effects general operations, and io related things)
.upstream improvements to sched (will effect general performance and battery)
.updated LZ4 kernel compression binary to r120
.merge upstream Linux kernel 3.4.102
.built with Ubuntu 14.10, in pink and purple.. not that it matters!
.more, see github

*****v122*****26 July*****
.thermal: bring in new thermal driver. Seems to have better control over freqs compared to before. Butchered it. Now we have some weird roo thermal beast. See below. (myfluxi, me)
.introduce powersaver cap for limiting cpu max freq (me, see below)
.patch to upstream 3.4.99 (kernel.org)
.2w: rewrote this is some places. Add support for bi-directional sweep2wake and sweep2sleep (thx @Savoca for a few pointers and the idea, flar for the original code, see below)
.compile with new toolchain 4.9.1 Christopher83 2014.07
.disable HTC write protection (thx Tiny)
.clean up some drivers of unneeded code
http://forum.xda-developers.com/showpost.php?p=54408387&postcount=4819

*****v116*****18 July*****
.update BFQ-v7r5 I/O sched for 3.4 complete with Early Queue Merge
.tune smartmax tunables for more battery (thx @Rad Ryan)
.fixed sound issues from v110
.merge upstream Linux 3.4.98
.updates to lz4 kernel side code .updated to lzo kernel side
.new freq relation for Ondemand gov adapted for HTC Ondemand(stratosk, see below)
.tune deadline iosched for better performance (myfluxi)
.some updates merged from Nexus 7 L preview
[KERNEL][LINARO4.9.1] ★☆ Kangaroo Kernel ☆★ | 18 JULY | v116 | SENSE4.4.2 | 5.11.401.10 | Linux 3.4.98+ ///// JOEY KERNEL CM | 14 JULY | 3.4.94+ - Post #4555 - XDA Forum

*****v110*****8 July*****
.backported futex updates and fixes (for vulnerability, cred kernel.org/CM)
.some fixes for gpu
.updates to Linaro topology
.add Krait specific topology values (for cpu efficiency, neobuddy89)
.fix all audio bugs. ALL OF THEM
.mutex enhancements from v085 (CAF)
.disabled some useless govs, you won't even notice them missing .enable all PM sleep states (see below)
.updated installer script for all devices. Delete thermal and thermal backup files on flash *IF YOU FLASH ANOTHER KERNEL REFLASH ROM FIRST* (thx @Ser35) Remember we have custom kernel side thermal manager so all g
.update LZ4 binary to latest r119 (to do with kernel compression) .patch to latest Linux 3.4.97
[KERNEL][LINARO4.9.1] ★☆ Kangaroo Kernel ☆★ | 8 JULY | v110 | SENSE4.4.2 | 5.11.401.10 | Linux 3.4.97+ ///// JOEY KERNEL CM | 21 JUNE | 3.4.94+ - Post #4222 - XDA


****v100****23 JUNE*****
.base 5.11.401.10 (m7ul-3.4.10-g3c4bd25 )
.throttle earlier
.fixed audio bugs
.import conservative gov from 3.15+
.patch to 3.4.94
.update toolchain to latest 2014.06 4.9.1 Christopher83
.some under the hood stuff
.yeah tons of stuff since v077, remember we reverted to that lol

****v085*****08 JUNE*****
.misc updates to congestion stuff and sched (for greater efficiency and battery)
.fix bluetooth for Sprint and Verizon (thx Brymaster)
.thermal: a bit cooler on the higher phases
.cpufreq: ported CONSERVATIVE gov from Linux 3.14+ (stratosk, kernel.org)
.improvements to memory model section of kernel (to do with processing stuff)
.mutex enhancements from CAF
.update SELINUX from 4.4.3 google source (kernel side security)
.some misc updates from google 4.4.3 source
.under the hood stuff (see git)


****v077*****30 MAY*****
.updates to msm_bus for better performance, particularly in gaming
.support Sprint and Verizon (will link their threads later)
.enabled all thermal devices
.support 3 phase bricked msm_thermal (showp1984)
.port thermal to our setup
.remove stock thermal control (rename binary to thermald.bak)
.setup thermal for pretty cool: see below
.support more TCP algorithms (for data congestion control)

****v068*****26 MAY*****
Changelog: 26 May, Kangaroo Kernel v068
.build with Linaro CR83 2014.05 4.9.1 toolchian (update from last months)
.upstream to Linux 3.4.91 (kernel.org)
.added preservative governor latest version, tweaked for m7 (bedalus, me)
.added smartmax governor, set m7 defaults (maxwen, me)
.added easter eggs
.reverted dubious sched changes that brought small stutter
.reverted cpuidle to stock to fix sleep times and battery (sorry)
.some misc fixes
.updated BFQ-v7r4 I/O sched for 3.4
.add Early Queue Merge (EQM) to BFQ-v7r4 for 3.4.0

****v058*****18 MAY*****
.idle the gpu properly
.decrease mmc wakelocks and time to enter deep sleep (tripnraver)
.update latest caf topology (to do with CPU behavior, Linaro/Synthetic.Nightmare)
.update lz4 compression binary to r117 and some tweaks to compression .reduce wifi wakelock by a lot (Imoseyon, me)
.patch upstream to Linux 3.4.90
.disabled some crap from defconfig to make the kernel leaner
.complete backport of CPUIDLE from Linux 3.14 (see below)
.some device map fixes
xda-developers - View Single Post - [KERNEL][LINARO4.9.1] ★☆ Kangaroo Kernel ☆★ | 18 MAY | v059 | SENSE4.4.2 | Linux 3.4.90+ ///// JOEY KERNEL CM | 12 MAY | 3.4.89+ ///// Kangaroo Control script post #3

*****v044*****

.implement hashtable introduced in 2e41ba2df20f986b8ae722b9979a57e3ffe31f68 for moar drivers (efficiency)
.merged many rwsem patches from mainline Linux (to improve rw semaphores)
.userspace voltage control (myfluxi, see below)
.minor sound driver update
.build with Christopher83 Linaro 4.9.1 toolchain by default now
.cpufreq drivers rewritten in some places to be more logical and efficient (Linaro)
.some minor tcp tweaks (releted to data use)
.more tweaks to slimbus (see below)
.patch to 3.4.89

Voltage control: can be used with kangaroo control script. You'll have to un comment out those lines. Remember, not everyones CPU can take the same.. @geko95gek @neniick could easily take 700mV min on their PVS3 devices at 384MHz, so I lowered min to 600mV. Anything under this will not work.
Min voltage: 600mV
Max voltage: 1300mV
Be careful with voltage control (this is kinda a reason why I didn't want to include) but the guys convinced me that they'd be careful Do not set anything on boot or with scripts unless you know it will work and not bootloop your device!

Slimbus: from commit message:
Quote:
DRIVERS: SLIMBUS: some more tweaks:
Set ROOT_FREQ at 22, which is double what we had before. According to some documents this is what we want for optimium audio quality
Force SLIM_RATE to 44.1KHz and 48KHz instead of much lower values. This way it will be forced to run at these freqs to match the majority of audio files user will be playing.

ZeroInfinity/Poondog

Signed-off-by: ZeroInfinity <infinitezero345@gmail.com>
Signed-off-by: poondog <markj338@gmail.com>

*****v072*****21 October****

.cleaned up MAKEFILE kernel build flags
.some power efficiency enhancement patches, picked from NVIDIA for a15 devices (for greater battery life)
.reverted some msm_hsic_wakelock patches to try to reduce wakelocks (to improve standby times)
.introduce userspace voltage control (min is 650mV)
.some upstream patches for compression
.optimize memcpy for cortex-A15 to memutils (xboxfanj, this is for overall efficiency)
.some Cortex-A15 optimization patches from NVIDIA
.more minor under the hood stuff as always

*****v068*****04 October****

.Update toolchain to Linaro 2014.09 4.9.2 for a15 chipsets by Christopher83
.some updates to SELINUX (to do with security)
.introduce OPTIMAX governor (see below)
.introduce PRESERVATIVE governor (see below)
.introduce SMARTMAX governor (see below)
.GPU overclocking (see below)
.imported ULTRASOUND_B sound drivers (see below)
.upstream Linux update to 3.4.104
.allow stock EXFAT and CRYPTO modules to work (thx to bgcngm from dual sim m7, this is experiemental since idk if it works)
.fixed random reboots and stability from prev version

New things
Optimax governor
This is based on ONDEMAND, like almost all governors that have arisen from XDA. It contains some enhancements from LG, particularly to freq boost handling so it will boost to a set level, almost like HTC's governor. It has different tunables to the HTC governor but it behaves pretty similar, the tunables it comes with default are a bit more conservative.
I picked it from Cl3kener's Uber kernel for Nexus 5, where it has quite a reputation for battery life
I believe it originates from the LG G2 (correct me if I'm wrong)

Preservative governor
This is based on the idea that the CPU will consume a lot of power when it changes frequency. It is based on the conservative governor. The idea is that it will stay at the step specified (702MHz selected by the creator Bedalus) unless needed. You will notice it will hover around 702 a lot, and not go above too much, and only to min freq when NOTHING is happening at all. This is most beneficial when you are doing something like reading; the screen is static or playing light games that won't need boosting any more
The governor comes from Moob kernel for nexus 4

Smartmax governor
Does it need an explanation? Its basically an updated quad core version of Smartass V2, the benefit of this over any other gov is that its highly tunable. Because we have Ondemand for performance and smoothness, its tuned for battery with @Rad Ryan's findings
The author is maxwen, the gov was originally written for One V, One X and original OPPO phones

GPU Overclock
This is different to any other kernel I believe. Instead of replacing the max freq qith a higher one, I added another freq step and allowed the kernel to scale to it. Therefore when the GPU speed is not really needed it can still sit at 320 or 400MHz, only boosting to 487.5 max when needed. The GPU is very conservative with its boosting. It will like to boost to medium freqs a lot. The default freqs now are 27, 128, 200, 320, 400, 487.5MHz. Max freq is able to be set with an app like TricksterMOD. But, since it will not boost to 487.5MHz very often the battery impact is negligible under "normal" use.
Thanks goes to @Brymaster5000 and @Buckmarble from VZW forums for some help on this Plus to faux123 where the original extra freq comes from

ULTRASOUND_B
These drivers actually are made for the Snapdragon 80x devices. You guys picked it from the blind testing. The tests were:
a: ULTRASOUND_A (made for our devices but newer than whats stock)
b: ULTRASOUND_B (made for m8, z2, SGS5 generation devices)
c: CONTROL (completely stock)

http://forum.xda-developers.com/showpost.php?p=55825791&postcount=6358

*****v058*****13 September****

.shorten some wakelocks (for better sleeping)
.some more tweaks for better overall battery and performance
.upstream fixes and improvements to TOPOLOGY drivers (to do with queuing of tasks to individual cores, from Linaro)
.optimize TOPOLOGY further for Krait devices (neobuddy89)
.introduce BFQ IOSCHED v7r5
.introduce FIOPS IOSCHED (default)
.enable ILLINOIS to be set as default, and set it default for TCP
.introduce LINARO POWER EFFICIENT WORKQUEUES (heaps of battery savings)
.some fixes to bluetooth
.upstream backports to EVENTPOLL subsystem from 3.14+ (Efficient event retrieval implementation, thx neobuddy)
.fix some more compile warnings for better optimized code (cl3kener)
.drop i2c clock a bit more (to save battery, ref. @zeroblade1984/Samsung/OPPO
.remove some more debug (less energy waste)
.strip most debug from modules, reduce size by 90%
.enable all sleep states, based on 4.4.2 kernel tests (for better battery especially in sleep)
.remove depreciated sched sysfs since they are removed up upstream kernels and don't really do anything
.some LINARO ARM code improvements
.update to HTC 6.09.401.5 kernel source (not much really lol, a few internet related fixes)
.introduce USB FAST CHARGE (flar2, off by default)
.cleanup some HTC junk
.some improvements to LOWMEMORYKILLER from moto/upstream (to do with multitasking)
.some improvements to ONDEMAND governor for better power savings with no smoothness loss
.fixed USB DAC audio (Thanks @hq5 for testing)
.introduce KEXEC_HARDBOOT aka MULTIROM (still needs patched RAMDISK, I do not include this)
.add some more doge

http://forum.xda-developers.com/showpost.php?p=55423362&postcount=5983

*****v045*****6 September*****
.2w: change feedback slightly, now it doesn't vibrate heaps on sweep2sleep
.further updated workqueue (for better battery and efficiency)
.some network tweaks
.heaps of "under the hood" improvements (lead to better efficiency for speed/battery)
.reduce internal USB wakelocks to improve battery
.patched kernel futex vulnerability (from CM, for security)
.compress with LZ4 for faster boot speeds and built with latest binary
.updated all compressors to latest versions
.add lower GPU frequencies and scale to them (for better battery)
.upstream backports to OOM handler from 3.16+ (related to memory use, see here https://www.kernel.org/doc/gorman/ht...rstand016.html)
.optimized deadline scheduler for better use on flash
.quad core cpu stats (faux123)
.lower max i2c clock to 384MHz to save some juice, no negative effects in testing
.some general code fixes and improvements
.enable ILLINOIS tcp algorithm and set default
.enable NTFS r/w support

http://forum.xda-developers.com/showpost.php?p=55259490&postcount=5819

*****v027*****30 August*****

.massive improvements to the workqueue, synced with AOSP+ (franciscofranco)
.BCM4335: attempt to decrease wakelocks
.signature tweaks to SLIMBUS (me/zeroinfinity)
.msm: memutils: memcpy, memmove, copy_page optimization from motorola
.use freezable blocking calls kernel wide (for more efficiency and less waste of resources, comes from upstream android)
.slimmed down kernel, stripped of some things it doesn't need
.removed some more debugging
.much under the hood tweaks (wow)

http://forum.xda-developers.com/attachment.php?attachmentid=2917793&d=1409384351


*****v021*****21 August*****

Changelog: Kangaroo Kernel MKIV v021:
.2w: default to sweep2wake and doubletap2wake on
.backport RANDOM and RANDOM32 drivers from Linux 3.16. FULL port, not just a few patches
.patch all the way to Linux 3.4.103 latest. These include bugfixes, enhancements that have been seen fit to be merged into the mainline 3.4.y kernel
.scale L2 and CPU in sync, up to 1134MHz where the L2 maxes out. Results in smoothness at higher freqs and battery saving at lower
.begin to work on workqueue, for now just a few fixes
.drop all CPU voltages by 50mV for battery improvement and heat reduction
.begin to tweak kernel to be cooler and leaner

http://forum.xda-developers.com/attachment.php?attachmentid=2907204&d=1408675781

****v006*****05 August*****

Kangaroo Kernel v006 4.4.3:
.patch upstream to 3.4.25
.introduce all 2w features from Kangaroo Kernel 4.4.2, including dt2w, s2w, bi-directional etc
.button backlight notifications (tbalden)
.tweak makefile flag optimizations based on our testing on 4.4.2 Sense
.some minor fixes and enhancements
.disabled systemrw protection (Tiny4579)

download: kk006_443