No. Not compatible with the stock kernel.
Development [Kernel][09.07.2022][Android 12.1.0]Kirisakura 3.0.17 for Pixel 6/Pro aka "RAVIOLE"
- Thread starter Freak07
- Start date
I can confirm Kirisakura kernel works with SparkOS ROM. That's what I'm currently using on my P6P, works great.
I flashed Kirisakura kernel using the Kernel Flasher app.
Can I delete the Flasher app after having flashed the kernel?
Can I delete the Flasher app after having flashed the kernel?
Yes. You just have to reinstall the app, if you want to flash again, backup or restore a backup.
Keeping Magisk installed is mandatory though.
Any music I play stutters a lot when the screen is off, to prevent that do I just need to remove the powerhal Magisk module?
And is there any way to benefit from the module, and no stuttering?
Thanks!
And is there any way to benefit from the module, and no stuttering?
Thanks!
No, you're not supposed to remove the magisk module at all. If you remove it, there will be breakage in the background everywhere.
I don't have any stuttering when I listen to music, videos, audio books etc with screen off.
So if it's any type of music playback something else is wrong. No issues here at all.
The p6 pro devices are known (at least in the past) to sometimes have problem with stuttering music when using ldac for Bluetooth playback.
Can you give me exact steps, as detailed as possible, to reproduce the issue as well as logcat and dmesg while the issue happens? (firmware, kernel version, music player app, Bluetooth (Codec)/wired connection, type of music file, mp3, flac, streaming, network type.)
Last edited:
Thanks for the quick reply, I'll get you the logcat & dmesg later today (I can just use Logcat Reader, right?), interestingly the issue only started after flashing June.
I'm using SparkOS, June build (spark_raven-userdebug 12 SQ3A.220605.009.B1 1655107403), latest June kernel, Spotify or YouTube Music, SBC/APTX, wireless headphones, streaming via WiFi (MP3)
I'm using SparkOS, June build (spark_raven-userdebug 12 SQ3A.220605.009.B1 1655107403), latest June kernel, Spotify or YouTube Music, SBC/APTX, wireless headphones, streaming via WiFi (MP3)
It's working correctly now, I think the issue was caused by a setting.
Either way I'm good for now, and will use Logcat if the issue pops up again, and will grab all the info you requested beforehand.
Thanks again, cheers!
Is TTL Spoofing still enabled with v3.x? I use EXKM to set TLL as described in post #436. With v2.4.0 and all the others I've tried before it, TTL spoofing works great. However when I flash 3.0.0 or 3.0.1 and reboot the EXKM script fails with errors that --ttl-set and --hl-set are invalid options. I flash back to 2.4.0 and reboot and it works again.
you´re correct. enabling ttl spoofing support somehow slipped through in the 3.0.x releases. I´ll enable it for the next release.
Thanks for spotting and reporting it!
You can reduce max powerdraw by using CleanSlate battery saver feature accessible via CleanSlate config app.
Due to PMU limiter being enabled max powerdraw might be reduced in certain scenarios as well. info about that should be linked in the OP.
Power saving mode is not that. Let's say we have TDP 5 w and the phone gets very hot in some applications. And if you reduce TDP, for example, to 4.8 or 4.6, then throttling will come earlier and will not heat up the phone as much.
Hey @Freak07, is this already patched in your kernel? https://www.androidpolice.com/pixel-6-galaxy-s22-kernel-vulnerability-raviole/
Or can it be patched for the next update? No pressure, just wondering if we need to wait for Google to patch it or not.
Or can it be patched for the next update? No pressure, just wondering if we need to wait for Google to patch it or not.
In a way it is.
Straight from the Intel page:
Thermal Design Power (TDP) in Intel® Processors
Provides FAQs about Thermal Design Power (TDP) in Intel® Processors.
What is Thermal Design Power (TDP)?
TDP stands for Thermal Design Power, in watts, and refers to the power consumption under the maximum theoretical load. Power consumption is less than TDP under lower loads. The TDP is the maximum power that one should be designing the system for. This ensures operation to published specs under the maximum theoretical workload.
Power saver mode or the pmu limiter does exactly that. It limits the power the SOC can draw, by restricting the SoC.
Thereby also reducing generated heat.
But if you want to change thermals per App, that's not possible.
Thermals are also "mostly" regulated outside the kernel via thermal hal.
The article mentions there are no details on the exploit yet as far as i read it. So how should I know?
Whoops, guess I read the article too fast! My bad!The article mentions there are no details on the exploit yet as far as i read it. So how should I know?
No problem
if you stumble over a link to GitHub or another similar site feel free to share Will do if I come across the actual explanation of the exploit!No problem
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if you want to know if it´s safe to flash the A13 stable factory image over A12 firmware with this kernel installed, yes it is since it replaces everything.Probably not since @Freak07 was supporting the Stable Android version only, and not Android 13 Beta. Now that 13 is Final, I'd just wait.
But perhaps someone who enjoys risk more than me these days will test the theory!
if you want to know if the A12 kernel runs on A13, it won´t.3
I feel your pain man.
This kernel has CleanSlate kernel features such as Battery saver which can be used to reduce heat. In my experience the difference was minimal, but maybe it'll be different with your usage. Worth a try I guess.
[KERNEL] CleanSlate S1.4.4 |S2S|AdBlock|VIB|BatterySvr [June 8]
tbalden's CleanSlate kernel for Google Pixel...
forum.xda-developers.com
You gotta install Clean Slate Companion app + the configuration app. Grant necessary permissions and then choose a Battery Saver level from 1 to 3, with 3 being the most aggressive.3
Use CleanSlate battery saver during those conditions.
Edit: i was ninja'ed.
That limits only cpufreq though. Might not make the biggest difference, but still useful.
Running display at highest brightness, while being in direct sunlight, high ambient temp, mobile signal etc, it's just a matter of time until it gets hot.
Apart from that thermal throttling is not directly controlled by the kernel, but the thermal hal. That part is not open source afaik and I don't want to touch it either way.3
Probably not since @Freak07 was supporting the Stable Android version only, and not Android 13 Beta. Now that 13 is Final, I'd just wait.
But perhaps someone who enjoys risk more than me these days will test the theory!2 -
8
if you want to know if it´s safe to flash the A13 stable factory image over A12 firmware with this kernel installed, yes it is since it replaces everything.Probably not since @Freak07 was supporting the Stable Android version only, and not Android 13 Beta. Now that 13 is Final, I'd just wait.
But perhaps someone who enjoys risk more than me these days will test the theory!
if you want to know if the A12 kernel runs on A13, it won´t.6
ACC with the AccA GUI front end. I charge to only 75% too - I also don't usually let the battery go below 25%, and I very rarely fast charge.Question.. is there a setting/magisk module which allows to configure the % at which charging stops? I don't like charging past 75%, but yesterday I just passed out and woke up with the phone plugged in
I also use an app (might be GSam Battery Monitor) to alert me when the phone reaches 75%, although I could just as easily set up an Automate script to email me when that happens instead if I wanted.
Don't drink and charge!5
1. No, there's no configuration available for this kernel. I want everyone to come here, read the release post and download the kernel from there. If there's anything to know, it's at least less likely to be missed.
2. No while the kernel is flashed you can't perform incremental OTAs. You need to restore all partitions to stock (how to is in the FAQ, one of the first posts).
It's probably easier to just download and flash factory images or full OTA. You'll find guides for that in this forum it you search for it.
After successfully updating the firmware you can reflash the kernel. If you don't want to face issues you might want to wait for me to update the kernel with new changes from each month. Usually a few brave ones flash the old one reporting whether it still works or needs updating.54
yes it´s a new thing. I think it affects currently pixel 5 and later.
with the fastboot flag
Code:--disable-verity --disable-verification
you should be able to either flash the vbmeta.img of the firmware you´re currently on (extract from factory image)
Code:fastboot --disable-verity --disable-verification flash vbmeta_system_a vbmeta_system.img
or just flash the image-update.zip found inside the factory image of the firmware you´re currently on via
Code:fastboot update --disable-verity --disable-verification image-update.zip
disabling those flags will completely wipe the device!! -
101Kirisakura-Kernel for the Pixel 6/Pro
Hello everyone,
To keep it short: Here is Kirisakura - Kernel for the Google Pixel 6 Pro aka Raven and the Pixel 6 aka Oriole, together Raviole.
I would appreciate if everybody that flashes the kernel, reads at least once through this opening post and the following ones.
The kernel aims to keep most of the subsystems updated, way ahead of the stock kernel, thereby improving security, stability and performance!
This includes Linux-Stable, F2FS-Stable and kernel/common!
If that got you curious, have a read about linux-stable and why it is important here. The stable-process is not the same for every subsystem, but the general idea, rule of thumb and benefits are applicable for other subsystems as well.
The kernel includes a lot of improvements and contributions from other developers as well. Without this kernel would not exist.
A big part of improvements originate from @arter97´s, @kdrag0n´s and @Sultanxda´s work. Many others contributed in some way or another to this kernel.
A big thanks to all of them at this place!
Now lets continue with a list of features in the next paragraph!
Features:
Main Features:
- Based on latest A13 kernel sources from Google, Kernel is made for Android 12
- Linux-Stable-Upstream included to 5.10.129
- Compiled with prebuilt Google clang 14.0.7
- merged kernel/common (improvements to android-common-kernel straight from google)
- Multi-gen LRU backported (more info here, here as well and here) to improve mm and reduce cpu cycles
- Utilize an additional kswapd thread to increase throughput for memory reclaim
- pelt multiplier tied into powerhal to speed up scheduler during interaction (more info here)
- prevent frequency spikes caused by small transient tasks when the device is idle(more info here)
- tie mechanism to prevent frequency spikes caused by small tasks also into powerhal
- scheduler improvements for RT (realtime) tasks
- introduce and setup PMU limiter (prevents CPU from spiking to max when it isn´t needed, based on PMU reads, more information here)
- improve camera performance by tuning the powerhal during recording
- bias tasks of rt, sf and ta groups to prefer high capacity cpus during app launches, interactions
- improve app launches via powerhal
- improve trusty driver performance which connects to fingerprintscanner-hal by using high perf wq during fp unlock
- restrict maximum CPU-Freqs during screen off/ idle to 1.1GHZ for all clusters to save power
- introduce unfair f2fs rwsems to prevent writer starvation and improve IO perf under heavy load
- fuse: give wakeup hints to scheduler to speed up compress/decompress in internal storage (details)
- enable RCU_BOOST (details here), also fix RCU_BOOST behaviour
- F2FS-Stable updated
- TCP backports from mainline
- SSG IO scheduler for reduced overhead and less CPU cycles (more lightweight and android optimized)
- Scheduler updates from linux-main
- use improved energy model for exynos cpu cooling/thermal control
- allow GPU to scale down to 150mhz, but boost to higher value in case of interaction via powerhal
- affine IRQS to CPU 7 during camera usage for improved performance as it tends to overload the little cores
- use bbr as default TCP congestion algorithm (fasted algo according to this excellent research from @kdrag0n found here )
- Enable support for TTL spoofing
- Include LRNG, see here and here for more info, bump to v45 with 3.0.0
- important patches from kernel/common for 5.10 (here are more details)
- CleanSlate Features from @tbalden, big applause here! (s2s, notification booster, battery saver, flashlight notifications. Please note: cleanslate features that work otherwise with rooted devices like kadaway (adblocking) are not implemented on this kernel since I´m running rooted)
- dirty pipe exploit fixed
- supports direct usb access for hi-res playback over USB-C DACs
- flashing the kernel will preserve root
Various Optimizations:
- update several drivers to use power efficient workingqueues (for example wlan driver)
- kernfs: use buffer from the stack space
- printk: use buffer from the stack space
- kthread: use buffer from the stack space
- bpf: avoid dynamic memory allocation for small value buffers
- binder: Reserve caches for small, high-frequency memory allocations
- kernfs: use kmem_cache pool for struct kernfs_open_node/file
- cgroup: use kmem_cache pool for struct cgrp_cset_link
- f2fs: reduce timeout for uncongestion
- f2fs: Demote GC thread to idle scheduler class
- f2fs: set ioprio of GC kthread to idle
- mm: vmstat: use power efficient workingqueues
Wakelock Blocker:
- advanced wakelock blocker with the ability to block any wakelocks (dangerous, use with caution)
- please read [URL="https://arstechnica.com/gadgets/2018/08/p-is-for-power-how-google-tests-tracks-and-improves-android-battery-life/"]this for further info
AK3 Helper Module:
- restrict little cluster to 1,19ghz mid cluster to 1,19ghz and big cluster to 1,1ghz during screen off, to reduce battery usage for example during music playback
- only use little cores during screen off/device suspend
- tie pelt multiplier into the powerhal (more info here)
- prevent frequency spikes caused by small transient tasks during idle operation (more info here)
- boost scheduler using the pelt multiplier during fingerprint unlock operation
- setup and control PMU limiter via powerhal (more info here)
DOWNLOAD:
Download is always located in this folder:
Downloads for : -Android- Generic Device/Other | AndroidFileHost.com | Download GApps, Roms, Kernels, Themes, Firmware and more. Free file hosting for all Android developers.
Download GApps, Roms, Kernels, Themes...www.androidfilehost.com
Changelog:
Android 12.0.0
1.0.0 Initial Release
1.0.2 https://forum.xda-developers.com/t/...r-pixel-6-pro-aka-raven.4358435/post-85910621
1.0.5 https://forum.xda-developers.com/t/...r-pixel-6-pro-aka-raven.4358435/post-85924419
1.3.0 https://forum.xda-developers.com/t/...pixel-6-pro-aka-raviole.4358435/post-85976139
1.4.0 https://forum.xda-developers.com/t/...pixel-6-pro-aka-raviole.4358435/post-86109665
1.5.0 https://forum.xda-developers.com/t/...pixel-6-pro-aka-raviole.4358435/post-86259863
1.7.0 https://forum.xda-developers.com/t/...pixel-6-pro-aka-raviole.4358435/post-86390563
1.8.4 https://forum.xda-developers.com/t/...pixel-6-pro-aka-raviole.4358435/post-86541727
Android 12.1.0 Stable (March feature drop and more recent)
2.0.0 https://forum.xda-developers.com/t/...pixel-6-pro-aka-raviole.4358435/post-86617873
2.0.1 https://forum.xda-developers.com/t/...pixel-6-pro-aka-raviole.4358435/post-86637233
2.1.0 https://forum.xda-developers.com/t/...pixel-6-pro-aka-raviole.4358435/post-86695911
2.3.0 https://forum.xda-developers.com/t/...pixel-6-pro-aka-raviole.4358435/post-86821331
2.4.0 https://forum.xda-developers.com/t/...pixel-6-pro-aka-raviole.4358435/post-86834981
Android 12.1.0 Stable (June feature drop and more recent)
3.0.0 https://forum.xda-developers.com/t/...pixel-6-pro-aka-raviole.4358435/post-86992705
3.0.1 https://forum.xda-developers.com/t/...pixel-6-pro-aka-raviole.4358435/post-86996237
3.0.17 https://forum.xda-developers.com/t/...pixel-6-pro-aka-raviole.4358435/post-87127695
Android 12L QPR Beta - Deprecated
Build for Android 12 QPR Beta: https://forum.xda-developers.com/t/...pixel-6-pro-aka-raviole.4358435/post-86857033
Requirements
- unlocked Bootloader
- USB-Debugging in developer options enabled
- latest adb and fastboot binaries
- working adb and fastboot environment so you can flash back to stock in case something goes wrong
- working magisk environment (a device rooted with latest magisk stable in case you want to be absolutely safe)
How to flash the Kernel:
1a. Make sure you tick all the requirements above
1. Download the correct kernel.zip depending on your device (Pixel 6 = oriole || Pixel 6 Pro = raven)
2. Flash the correct kernel.zip via EXKM, FKM or kernel flasher. Root will be preserved. The AK3 magisk helper module will be automatically installed during flashing the kernel.zip and be present on next reboot.
Do not remove or disable the AK3 Magisk Helper Module otherwise the device will bootloop.
3. Reboot and profit.
Manual installation is no longer supported starting with release 3.0.0, as there´s a free open-source option to flash kernel.zips now.
Instead use the free kernel flasher, which can be found here.
Manual installation without relying on paid apps like fkm/exkm:
Please have a look at the linked post.
Donations:
Donations are not mandatory but very welcome if you want to support development or just buy me a coffee/tea/beer
If you like my work: http://paypal.me/freak07
Credits:
@osm0sis for all his work on AK3.
@tbalden for being the best HTC, Pixel, OnePlus and Asus wingman!
@capntrips for all his work on the pixel 6!
@LeeDroid and @mwilky for their awesome roms and work I used on multiple devices!
@Captain_Throwback for all the mentoring and guidance!
@Eliminater74 for bringing me into the game and the Inspiration
@nathanchance for his upstream guidance and assistance
@RenderBroken for helping me out
@flar2 for all his work
@joshuous for all the help he provided to me in the past!
@arter97 for giving me advice
@kdrag0n for his help and advices!
@topjohnwu for magisk and his entire work!
Source Code: https://github.com/freak07/Kirisakura_Raviole37Update to 1.8.4
Hey guys and girls,
So here´s the next update. It´s kind of an off schedule update, as I planned to update the kernel with the next security update/feature drop.
But in the light of recent events regarding the new exploit called "Dirty Pipe" (more info here), which is similar to the "Dirty Cow" exploit from a while ago, but easier to exploit this time, I decided to release an update ahead of schedule.
This exploit was fixed in linux-stable 5.10.102, as opposed to a single commit in AKC (android kernel common, commit here). This shows once more why merging linux-stable is beneficial as explained in detail in the OP.
Since one of the key aspects of this kernel is security and staying on par with upstream (which often fixes exploits way ahead of android security bulletin updates, even before an exploit is even known or fixed via a patch on the security bulletin) I decided to release this update as quickly as possible, so this exploit is fixed on devices running this kernel.
Several other notable improvements and changes in this release:
Bring in scheduler updates from Android 13 Developer Preview, which aim at improving task placement. (adjust powerhal accordingly)
BFQ IO-Sched is now on par with linux-mainline.
Several fixes to mm subsystem, f2fs and others.
Several other improvements are included as well. More details in the changelog.
Download is below.
Updated instructions in the OP!
Changelog:
- linux-stable 5.10.103
- contains fix for the dirty pipe exploit
- built with clang 14.0.2 prebuilt by google
- improvments from kernel/common
- fix memory leaks
- security related patches
- mm improvments
- f2fs fixes
- scheduler fixes
- for details please check github
- built with improvements from A13 Dev Preview to display driver
- other changes please look at my github
Download:
Downloads for : -Android- Generic Device/Other | AndroidFileHost.com | Download GApps, Roms, Kernels, Themes, Firmware and more. Free file hosting for all Android developers.
Download GApps, Roms, Kernels, Themes...
Instructions can be found in the OP! Please follow the instructions to avoid any issues.
If you´re coming from another kernel restore stock boot.img, dtbo.img, vendor_boot.img and vendor_dlkm.img before flashing. Thank you.37Update to 1.7.0
Hey guys and girls,
So here´s the next update. It includes the february security update. Most of the changes brought by the February kernel source drop, were already included in this kernel by merging kernel/common and linux-stable.
Several other notable improvements and changes in this release:
Improve f2fs performance by merging a patchset to prevent writer starvation for the checkpoint thread. This was discussed this month in the f2fs mailing list and is already merged to the kernel/common tree. It´ll improve performance under heavy I/O utilization.
You can find more information following the discussion here.
Necessary backports were brought to the kernel and the platform specific f2fs-implementation was also adjusted.
Latest f2fs-stable was also merged to the kernel.
Update the patchset to prevent frequency spikes caused by small tasks as well. Tie those new changes into the powerhal. (That means users not flashing the kernel.zip, but instead use the manual installation method, which are only a handful from the download count, need to flash the updated magisk helper module. Users that flash the kernel.zip via FKM/EXKM have to just flash and forget)
Several other improvements are included as well. More details in the changelog.
Download is below.
Updated instructions in the OP!
Changelog:
- February Security update merged
- linux-stable 5.10.96
- include latest f2fs-stable
- improvments from kernel/common
- fix memory leaks
- security related patches
- mm improvments
- for details please check github
- introduce unfair f2fs rwsems to prevent writer starvation and improve IO perf
- update patchset to prevent freq spikes caused by small transient tasks (also tie this into powerhal)
- give pelt multiplier power hint for scheduler performance boost during fingerprint unlock
- fuse: give wakeup hints to scheduler to speed up compress/decompress in internal storage (details)
- enable RCU_BOOST (details here), also fix RCU_BOOST behaviour
- update LRNG implementation (thanks to arter97 )
- improvements/fixes for CleanSlate features
- other changes please look at my github
Download:
Downloads for : -Android- Generic Device/Other | AndroidFileHost.com | Download GApps, Roms, Kernels, Themes, Firmware and more. Free file hosting for all Android developers.
Download GApps, Roms, Kernels, Themes...
Instructions can be found in the OP! Please follow the instructions to avoid any issues.
If you´re coming from another kernel restore stock boot.img, dtbo.img, vendor_boot.img and vendor_dlkm.img before flashing. Thank you.36Update to 2.1.0
Hey guys and girls,
Alright here´s the next update. And it´s again a really big update!
A few weeks ago google pushed a backport of Multi-Gen LRU for the 5.15 kernel to their aosp/kernel common branches. I went ahead and backported that to our 5.10 tree alongside other mm-improvements from linux-mainline. By now google pushed their own backport for 5.10, but I decided to go with my original implementation as it contains a lot more improvements alongside the main Multi-Gen LRU backport and ran stable for well over 3 weeks.
Powerhal was adjusted quite significantly too. CPU-freqs are restricted to 1.1GHZ max during screen off/device idle operations to save more power. App launches and camera operation are improved as well in the powerhal. General usage benefits from those changes too.
Latest linux-stable, f2fs-stable and kernel/common were merged as well.
Users that decide to not use the CleanSlate features and don´t install the apps won´t see the kernel parsing for the config files extensively.
Vibration Booster from CleanSlate was improved as well to kind of counter the weaker haptic feedback since the March update. Please check the linked thread from the changelog. Huge thanks to @tbalden for this. If you want to give a little bit back consider purchasing the apps via playstore or maybe a small donation.
I´ll keep the warning as to preferably using magisk stable to avoid potential issues as well here in this post.
Please note that 24305 works fine for me though on non beta, stable April firmware!
Important:
Make sure you´re being rooted with magisk 24300 stable before flashing the kernel if you´re unsure. Any magisk version above 24303 might potentially lead to a reboot back to bootloader since android 12.1.0 and A12L QPR3 Beta. At the moment this only affects canary, but I put the warning just in case this will not get resolved in upstream magisk in time until the next stable drops. I saw a post that some modules also have problems with latest canary, so there´s a lot going on at magisk´s side at the moment.
A post containing a short write-up how to "downgrade" magisk can be found following this link.
Changelog:
- Update for April Source
- Linux-stable merged to 5.10.109
- f2fs-stable merged
- fixes and improvements from kernel/common including several subsystems
- multi-gen LRU ( more info here, here as well and here)
- general LRU improvements from Linux-Mainline
- improve camera performance by tuning the powerhal during recording
- improve app launches via powerhal
- restrict maximum CPU-Freqs during screen off/ idle to 1.1GHZ for all clusters to save power
- remove cleanslate config files getting parsed excessively even if user did not install the CleanSlate apps
- improve vibration boosting feature in CleanSlate config app to allow stronger vibration again(please have a look at this post )
- other fixes for CleanSlate features such as sweep to sleep
- updated anykernel 3 zip, thanks to @osm0sis
- probably a lot more I forgot as time is short for me.
Download:
Downloads for : -Android- Generic Device/Other | AndroidFileHost.com | Download GApps, Roms, Kernels, Themes, Firmware and more. Free file hosting for all Android developers.
Download GApps, Roms, Kernels, Themes...
Instructions can be found in the OP! Please follow the instructions to avoid any issues and read this post carefully. Don´t use magisk canary 24303 or more recent to avoid potential issues!
If you´re coming from another kernel restore stock boot.img, dtbo.img, vendor_boot.img and vendor_dlkm.img before flashing. Thank you.
I wish everybody a great day/evening!
Have fun, enjoy the kernel and your phone.
If you like my work please consider a donation.
Donations are not mandatory but very welcome.
If you like my work and want to buy me a coffee/green tea: http://paypal.me/freak0735Update to 2.4.0
Hey guys and girls,
Alright here´s the next update and it´s fine to flash on May firmware. As I suspected we already had all the changes for May by merging upstream.
I´ll include the changelog from 2.3.0 as well in this release post, since I think a lot of people flash the kernel on a monthly basis when the security updates drop. So this post pictures the changes going from 2.1.0 to 2.3.0! As I said 2.3.0 was kind of a final rehearsal to make sure everything is good for the May update.
I´ll put a remark behind changes going from 2.3.0 to 2.4.0.
This release is made for stable Android 12.1.0 May firmware. Not QPR Beta or A13 Beta!
Once I find enough time or QPR beta gets updated, I might update the QPR beta release. No plans to support A13 beta.
I also finished up the tables/graphs in regards to different binnings with the respective voltages on different tensor chips thanks to the dmesgs you all provided. I really want to put out a big thanks here to everyone for taking the time and participating. It was really great to see this kind of response.
I´ll provide them in a post in this thread soon.
So with that in mind we´ll get to the next paragraph were I could put those tables to good use.
A few changes from A13 Beta are merged to the kernel so we can enjoy the improvements on A12 ahead of time. Most of them aim to improve the scheduler and task placement.
However the recently dropped A13 Beta source contains a commit that can restrict max-cpufreqs based on PMU (Power monitor unit) reading. I setup this mechanism (lets call it "PMU Limiter") to mildly cut back max-freqs when they aren´t needed. It works quite well so far, with no performance impacts during scenarios where max cpufreq is beneficial. (e.g. app launching, camera launching, interaction etcetc)
That means if a certain threshold is not crossed the max-freqs will be restricted to 1,4GHZ/1,6GHZ/2,4GHZ (for little/mid/big cores). As soon as the PMU detects enough pressure, those limits will be lifted.
The frequency limits are based on tracing during various scenarios, benchmarking and also factor in the voltage table I was able to create. For example: 2.4GHZ for the big cores is the last freq step where a steady linear increase in voltage can be seen. Freq steps higher than 2,4ghz have a steeper slope.
Keep in mind CPU-Freqs shouldn´t be touched in EXKM/FKM or other kernel managers. They are controlled by various mechanisms now (thermal hal, powerhal, pmu limiter etc) and values will get overwritten based on input.
That means if you open the CPU section in a kernel manager, the maxfreqs will not be the actual maxfreqs that are possible. or the minfreqs might be raised. That´s normal and there´s nothing wrong if that´s the case.
Additionally to the previous changes tasks of rt, sf and ta groups are now biased to start on high capacity CPUs during app launches, interactions etc.
As usual, depending on your usage you may or may not notice a difference during these scenarios.
While tracing I noticed kswapd often takes 100% cpu share when reclamation is happening. Since we use an 8 core cpu, an additional kswapd thread is being spawned during boot, which increases throughput for kswapd in these scenarios. Reasoning behind this can be found here.
The trusty driver which connects to the fingerprintreader hal uses now a high prio workqueue when the phone is unlocked via fingerprint scanner. This means better performance, especially under stress. Keep in mind this is a kernel level change, it won´t magically improve fingerprint reader times manifold.
DAMON and DAMON-Reclaim were removed from 2.3.0 going to 2.4.0. I tested the feature privately and it unfortunately collides with googles EH zram implementation causing the phone to crash at the moment. Tried to debug this issue, but no luck for the May release here.
If you previously enabled the feature without adjusting the parameters properly and your phone didn´t crash, DAMON-Reclaim just didn´t do anything.
2.4.0 also has an updated anykernel3.zip, which includes all the latest anykernel3 changes.
Thanks to @capntrips we now have full support to resize vendor_dlkm partition which is part of the super partition. That means we finally can flash larger than stock vendor_dlkm partitions via anykernel3.zips and resize the partition properly instead of just dd´ing to it.
A huge thanks to @capntrips for working on this and to @osm0sis for maintaining anykernel3.
Disclaimer:
I´ll keep the warning as to preferably using magisk stable to avoid potential issues as well here in this post.
Please note that 24306 works fine for me though on non beta, stable May firmware!
Important:
Make sure you´re being rooted with magisk 24300 stable before flashing the kernel if you´re unsure. Any magisk version above 24303 might potentially lead to a reboot back to bootloader since android 12.1.0 and A12L QPR3 Beta. At the moment this only affects canary, but I put the warning just in case this will not get resolved in upstream magisk in time until the next stable drops. I saw a post that some modules also have problems with latest canary, so there´s a lot going on at magisk´s side at the moment.
A post containing a short write-up how to "downgrade" magisk can be found following this link.
If you´re one of the unfortunate ones that suffer from the device is corrupt bug on pixel 6 series please take a look at the FAQ at the beginning of this thread it contains a solution. The issue is probably caused by a bug that affects pixel 6 devices and has nothing to do with magisk or a kernel, it just happens to get triggered when using any of those.
Changelog:
- Linux-stable merged to 5.10.113
- Use prebuilt Google Clang 14.0.5 for compilation
- Utilize an additional kswapd thread to increase throughput for memory reclaim
- remove DAMON and DAMON-Reclaim from kernel build (2.4.0)
- improve trusty driver performance which connects to fingerprintscanner-hal by using high prio wq during fp unlock (2.4.0)
- mm improvements from kernel/common (2.4.0)
- improvements from kernel-common a13 to page_pinner
- mainline backports for BFQ scheduler
- rework Multi-Gen LRU implementation
- scheduler improvements for RT (realtime) tasks
- other scheduler improvements
- include scheduler improvements from A13 Beta regarding better task placement
- introduce and setup PMU limiter (prevents CPU from spiking to max when it isn´t needed, based on PMU reads)
- bias tasks of rt, sf and ta groups to prefer high capacity cpus during app launches, interactions, camera launches, etc
- updated anykernel3.zip (thanks to @osm0sis) -> adds full support for resizing vendor_dlkm ( huge thanks to @capntrips )
Download:
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Instructions can be found in the OP! Please follow the instructions to avoid any issues and read this post carefully. Don´t use magisk canary 24303 or more recent to avoid potential issues!
If you´re coming from another kernel restore stock boot.img, dtbo.img, vendor_boot.img and vendor_dlkm.img before flashing. Thank you.
I wish everybody a great day/evening!
Have fun, enjoy the kernel and your phone.
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