[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] arter97:
/* Changelog */

r21

Boot issue fixed caused by improper switch to AK3

Brightness issue on exiting AOD fixed

LA.UM.8.3.r1-06300-sdm845.0 merged

Diag USB interface enabled for QPST

r20

Swap compressor backend(LZ4) updated

LA.UM.8.3.r1-06100-sdm845.0 merged

Linux v4.9.196 merged

Wi-Fi drivers updated to 5.1.1.74O

Latest f2fs-stable merged

r19

OnePlus changes merged including support for DC dimming

Linux v4.9.189 merged

Wi-Fi drivers updated to 5.1.1.73W

LA.UM.7.3.r1-08200-sdm845.0 merged

LA.UM.7.8.r1-06900-SDM710.0 merged (includes various scheduler improvements)

r18

Linux v4.9.186 merged

Wi-Fi drivers reverted back to stock Snapdragon 845 ones to resolve signal strength issues

Swap variant's LMK aggressiveness adjusted to use the stock values

r17b1

Linux v4.9.185 merged

LA.UM.7.3.r1-07900-sdm845.0 merged

LE.UM.3.2.1-00910-SDX24 merged

Wi-Fi drivers updated to 5.2.03.10Q

More debugging features removed from Wi-Fi drivers

Wi-Fi regulatory database taken from OnePlus to fix slow handshakes with 5 GHz APs (by LuK1337)

Faulty Low Memory Killer fixed to work better and resolve wake-up delays

General scheduler improvements backported

Virtual memory allocator performance improved

Task scheduler debugging disabled properly for lower overheads

Many parts of the kernel converted to use hotplug state machine

WireGuard updated to 20190702

Bunch of memory allocations from various subsystems were reworked to perform much better (thanks to Sultan) (total of 46 patches)

Debugging features disabled for Adreno GPU drivers to improve performance

Fixed an issue that was causing charging to be stopped randomly (details)

Rewritten IOMMU by Sultan reverted to resolve screen flickerings

Introducing a new swap variant for memory-hungry users

- Users with 6GB of memory or heavy multi-taskers are recommended to use the new swap variant

- Ditched conventional zram swap approach and taken zswap+vnswap for more efficient memory operations

- Backported zsmalloc memory allocator from mainline

- Backported zswap compressed page cache from mainline

- Samsung's Galaxy S9 memory modifications merged for better swapping efficiency tuned for Android

r16

Linux v4.9.180 merged

Wi-Fi drivers replaced with Snapdragon 855 drivers

- Switched from 5.1.1 to 5.2.03 release

- 1810 files changed, 851191 insertions(+), 187458 deletions(-)

- I've been internally using this for 3 weeks and noticed multiple improvements like faster handshakes and higher throughput without any issues

Fixed several memory management issues from previous releases

- This fixes multiple issues including performance regressions(wake-up delays, etc) and radio malfunctions

- Thanks to [MENTION=3262915]habylab[/MENTION] for testing multiple builds prior to release)

Latest f2fs-stable merged

LA.UM.7.8.c3-06800-QCS605.0 merged

LE.UM.3.2.1-18400-SDX24 merged

Removed f2fs debug tracing codes added by Qualcomm

qseecom performance improved

Re-enabled kernel tracers for avoiding janks

32-bit vDSO added for improving performance on arm32 programs

Audio kernel updated LA.UM.7.3.r1-07800-sdm845.0

r15b1

Linux v4.9.175 merged

Wi-Fi drivers updated to 5.1.1.71H

Latest f2fs-stable merged

LA.UM.7.3.r1-07400-sdm845.0 merged

LA.UM.7.8.r3-01400-SDM710.0 merged

Fixed a Qualcomm issue that prevented audio-app stune creation

Fixed an improper timer operation in fuelguage driver causing battery statistics to not update until 20 minutes after boot

Merged various patches from Proton kernel by kdrag0n to lower overheads and improve responsiveness (thanks to kdrag0n, sultanxda and ab123321)

Applied various optimizations to the touch panel drivers

Now VLA-free

RCU boost enabled for better responsiveness

New patches made to f2fs for more efficient GC and trim

FBE(File Based Encryption) now works with f2fs

r14

Wi-Fi drivers updated to 5.1.1.71C

Disabled some debugging options to improve performance

Added vibration control

Added wcd934x sound control

r13

Reverted a problematic Wi-Fi drivers optimization causing Wi-Fi to not turn on after some period of time

r12

Fixed a faulty memory region removal causing kernel panics

(Thanks to [MENTION=3262915]habylab[/MENTION] for directly testing builds)

r11

Reverted a minor Wi-Fi drivers improvement causing kernel panics

r10

AnyKernel2 is now being used

Linux v4.9.168 merged

Fixed a major memory management regression

Linux CMA pool size increased for better CMA efficiency

Improved memory allocation from the Wi-Fi drivers to reduce memory fragmentation

Fixed occasional kernel crashes(entering dumpmode) on shutdowns

r9

Linux v4.9.166 merged

LE.UM.3.2.1-11600-SDX24 merged

Use CONFIG_HZ = 300

- This changes context switching interval from 10ms to 3.33ms

- Pixel used this for years and Google recommends other vendors to do the same for fewer jitters

Some changes from Pixel 3’s Q preview kernel

Some mainline performance improvements to procfs merged

Removed RTB(interrupt) logging entirely

WireGuard updated to 20190227

Stock LowMemoryKiller parameter restored to hopefully fix wake-up delay and general lags

Fixed bq27541 fuelguage driver to properly work with CONFIG_HZ != 100

(Fixes various battery-related issues such as displaying -22% on initial boot)

Reverted a problematic memory management commit causing CMA allocation errors

Merged LA.UM.7.8.r1-05000-SDM710.0

Merged LA.UM.7.3.r1-06900-sdm845.0 audio kernel

Various changes made to f2fs rapid GC to make it more efficient

dirty_expire_centisecs set to 30 seconds to reduce flash wearouts and power consumption

Various changes merged from the Razer Phone 2 and Snapdragon 855

Kernel is now built with -O3 optimization flag

r8

Linux v4.9.163 merged

LE.UM.3.2.1-08000-SDX24 merged

Wi-Fi drivers updated to 5.1.1.70J

f2fs updated to 5.1 mainline version

Disabled qcom_rx_wakelock (details)

Reworked msm_geni_serial driver

- Lighter resource usage

- Lower power consumption upon wake(ISR)

- Fixed an issue preventing suspend indefinitely

Various changes from Proton kernel by kdrag0n

- Use flatmem to save kernel memory usage

- Use optimized memcmp

- Optimize rbtree

- Disable erratum 843419 properly

- Delay vmstat updating interval to avoid jitter

- Disable I/O stat accounting completely for lower overheads

- Reverted a cpuidle change for possible fix for power consumption regression during sleep

- Faster crypto algorithms ported(chacha20, sha2, crc32)

A bit lower power consumption by using WFE for long delays

Add accelerated crc32 routines

Use -O3 for input drivers for avoiding overheads

r7

Linux v4.9.160 merged

LA.UM.7.3.r1-06900-sdm845.0 merged

LA.UM.7.8.r1-04800-SDM710.0 Wi-Fi drivers merged

A totally new kernel base merged - LE.UM.2.3.2-05800-SDX24

- Total of 1153 commits and about 25,000 lines of code difference

- A lot has changed ranging from scheduler, memory management, device encryption, GPU and panel handling, UFS device driver, ION, cpuidle, binder and a whole lot more

OnePlus changes to OxygenOS 9.0.12 merged

- This includes display panel changes and may affect screen on/off delays

IRQ balancer settings updated to include UFS interrupts for better overall smoothness

Some of upstream camera commits applied for more reliable camera operations

Sultan’s display wake-up optimization re-applied after a bug fix revision

1.5

Linux v4.9.158 merged

Kernel configuration fixed for proper scheduler operation

OnePlus changes to display panel settings merged

Faulty screen optimization from Sultan reverted to fix occasional screen-on misses

Mainline f2fs fixes merged

LA.UM.7.8.r3-01100-SDM710.0 merged

- This new tag for Snapdragon 710 includes multiple enhancements over sdm845 tag, most notably scheduler improvements

WireGuard updated to 20190123

seccomp disabled in favor of less system-call overheads

Minor issue with f2fs rapid GC fixed

Fixed an issue with execprog causing readahead settings to be ignored on some boot

Modified IRQ balancer settings added for better smoothness

1.4

Linux v4.9.154 merged

ULPS during suspend disabled for (possibly)lower panel power consumption during screen-off

Audio HAL reworked to fix Type C audio adapter (thanks to [MENTION=2010892]Nezorflame[/MENTION] for testing)

Patch level set back to 2019-01

1.3

Linux v4.9.153 merged

ZIP installation now uses proper security patch level to bypass SafetyNet

(If you install the kernel by fastboot/IMG method, it won't bypass SafetyNet)

Merged several changes from Sultan's Pixel 3 kernel

- Numerous memory leaks fixed

- GPU performance improved with corrected priority

- Faster display wake-up

- Lower power consumption

1.2

OnePlus 6T support added - thanks to freshgiammi and nezorflame for testing

Security level is set to 2025-12(details)

1.1

CAF tag LA.UM.7.3.r1-06700-sdm845.0 merged

Linux v4.9.151 merged

Wi-Fi issue fixed (thanks to pappschlumpf for tipping me the culprit)

pstore kernel log is now properly saved

Custom TWRP integrated

Readahead set to 128kB to minimize page thrashing

IMG file is now provided for direct fastboot installation

1.0

Initial release