[Xperia Z4/Z3+ Android Development] zacharias.maladroit:
New Nougat Kernel 2.33 [preview], adding missing features [governors]

[New "clean", "untainted" Kernel base solely based on Sony's source (no merging of other branches - so far)]

https://drive.google.com/open?id=0BykGGWB96CBQUE9yVzZfOXVwclk Z5_SK_Enf_vN_2.33_Nova_I.1_7_ivy.zip

https://drive.google.com/open?id=0BykGGWB96CBQZnh5bWNBNmxUSlE Z5-DSDS_SK_Enf_vN_2.33_Nova_I.1_7_ivy_dual.zip

Characteristics:

NO compromises - thus some things might NOT be added, some things might be broken (!)

booting into TWRP via button combo is currently BROKEN (TWRP crashes / kernel panics)

use an older kernel, keep the USB-cable attached,

fastboot boot boot.img

, push VOL UP once the LED changes color, do stuff in TWRP, then reboot

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NO - MHL is NOT built into the kernel - NOT possible with Sony's Stock ROM (works fine on Lineage, RR, etc. though)

NO - RCU-boosting [memory leak, priority inversion fix] is NOT possible due to kernel NOT booting (detto on Lineage, RR)

NO FauxSound [caused way too much trouble with sound so far]

NO KCAL [base stability testing]

NO powerefficient workqueues [yet, base stability & functionality testing]

NO relaxed power consumption changes [is there even improvement with it ? - later]

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Uses 6.2 Linaro toolchain

conservative & code correctness related optimizations

WiFi is built INTO the kernel for sumire (and will be for: satsuki, ivy), suzuran [Z5 compact needs a different driver]

2.33 uses an improved WiFi driver

ion fixes

toned down logging (for dmesg) significantly

disabled quite a few logging sources - should be faster & less cluttering

pushed down idle load, less power consumption compared to "stock"

TONS of sound-related improvements (add ALAC/APE/VORBIS support, cut latency, fixed 24bit playback [may need a few more additional changes], ...) - quality should be MUCH better as well

lz4 compression fixes

enabled lz4 compression for zram

Fixed issue with "Unhandled level 2 translation fault"

writeback optimizations

TONS of mmc related fixes and speed improvements (when disabling CRC/checksumming - up to 70+% performance improvement, base should be around 40+% compared to "stock")

wakelock blocker

ZZMoove, elementalX v2, alucard governors

GPU underclocked to 27 MHz in idle, ~ 180-190MHz in most cases - cooler & less power consumption [downclock to ~ 300 or 390 MHz for more savings under load if needed]

several GPU governor related fixes

MAIN GPU governor is (msm_)adreno_tz - so if you change it - YOU ARE ON YOUR OWN

WiFi driver: attempts to cut down power consumption [evaluation]

camera: QUICKER , should be faster ready & more pictures can be taken in the same time compared to "stock"

quicker resume time (rushed wakeup from sleep of the device)

KSM is OFF by default, enable it if needed - this will save ~ 10-50 MB of RAM (or more) and cut down fragmentation a bit at the cost of battery

NOP / NULL cpuidle driver - use lpm cpuidle provided functionality

CPUIDLE: a few fixes

ANT/BT/FM: built INTO the kernel

adb reboot recovery works, so you could boot into TWRP via Script-Manager, etc.

other stuff I forgot

Characteristics (since 1.5.2):

somewhat reworked cpufreq governor handling

improved interactive governor (thanks [MENTION=4798704]RyTekk[/MENTION] )

elementalX (v2), ZZMoove, alucard, conservative governors are now enabled

add BFQ v7r8 i/o scheduler for 3.10+ kernel - set as default: massively less lag & waiting while the phone is updating, busy, etc. : https://www.youtube.com/watch?v=ANfqNiJVoVE&feature=youtu.be

random/entropy: fix entropy depletion (really Sony ? still not fixed ?)

reverted: asynchronous PM [might be source for instability]

reverted: keep CPU 0 & 4 always on [source for lags, higher battery consumption, potentially instability & other erratic scheduling (etc.) behavior]

KSM: default to "off" (is this actually working ?)

KSM: enabled deferred timer by default [lower battery consumption]

KSM: 60% savings in workload

KSM: now should be disabled while the screen is off - so no idle drain

KSM: several reliability & scheduling fixes

mm: memory subsystem & page_alloc big rework (as much as Sony's ROM allows)

mm: compaction: memory is now being compacted ("defragmented") while the screen is off

mm: compaction: allow compaction of unevictable pages (should make GPU, camera, etc. driver operation more reliable + stable) [needs testing]

slub: cache-shrinking & other stuff: make it more efficient & aggressive

mm: lower swappiness to 15% so that it only swap out to zram if it's really actually needed, this will save us battery juice & unnecessary CPU load

other fixes & improvements I forgot

.

Z5 Premium + Premium Dual are now supported

Z4/Z3+ + Z4/Z3+ Dual are now supported

Due to Sony's Stock ROM's nature - NOT ALL and the latest security changes are possible,

Reasons:

breaks sound quality

breaks Stock Music app [reboots]

breaks stability in general

breaks other functionality

breaks booting in general

Note:

booting into TWRP via button combo is currently BROKEN (TWRP crashes / kernel panics) [at least one Z5]

use an older kernel, keep the USB-cable attached,

fastboot boot boot.img

, push VOL UP once the LED changes color, do stuff in TWRP, then reboot

adb reboot recovery is possible, so you could boot into TWRP via Script-Manager, etc. - otherwise use the functionality of Nougat bootloader to boot directly into recovery

https://xdaforums.com/showpost.php?p=71848722&postcount=388

RULES:

NO ETAs

NO comparisons with other stuff disguised under the theme of "feedback", etc. [aka "fanboy-ism" and similar]

NO wishing for exotic governors, schedulers, etc. - been there - done that, it doesn't work well

NO compromises

NO repeated requests, questions, etc. TO ME

NO direct PMs related to things that you could find via Google Searches, Forum searches or questions posted HERE or in the Q&A Subforum

*

NO other weird stuff - this will prolong release, changes, etc. by +1-2 weeks for each demand

You have been warned !

Known issues:

Sony Music app playback partially appears broken:

Sony Music app + ClearAudio+ is unstable (phone reboot)

Sony Music app + DSEE HX is unstable (phone reboot)

Sony Music app + Sound effects (Equalizer, etc.) might be unstable (phone reboot)

Automatic automisation (for headphones) might be unstable (phone reboot)