Development [Kernel][23.09.2023][Android 13.0.0 Stable]Kirisakura_Raviantah 1.1.5 for Pixel 7/Pro aka "Pantah"
- Thread starter Freak07
- Start date
Just to check, as I know sometimes kernel changes aren't significant enough to need this custom kernel to be updated when a new factory release is out, so does anyone know if the March kirisakura will work on April?
I'll of course patiently wait if not
I'll of course patiently wait if not
Just fyi @Freak07!
like... not asking for any ETA but oh btw April factory images are outI'm really not! I know Freak07 is usually on top of things, I was just letting him know the update is available now
Just fyi @Freak07!
I flashed the march kernel on april firmware as source is not yet out. so far no issues but do so at your own risk.Just to check, as I know sometimes kernel changes aren't significant enough to need this custom kernel to be updated when a new factory release is out, so does anyone know if the March kirisakura will work on April?
I'll of course patiently wait if not
See you all tomorrow
PS:
For those that had troubles on magisk v26, those should hopefully be fixed once this pull request is merged.
Until the fix is merged I still advise to use stable v25 magisk.
Slim2none4u
Senior Member
- Oct 28, 2011
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I flashed the march kernel on april firmware as source is not yet out. so far no issues but do so at your own risk.
See you all tomorrow
PS:
For those that had troubles on magisk v26, those should hopefully be fixed once this pull request is merged.
Until the fix is merged I still advise to use stable v25 magisk.
Can confirm March works on April.
How did you downgrade? Did you uninstall Magisk and reroot on 25.2? I also would like to go back to 25.2 from 26 but would prefer to do it without needing a computer (using Magisk Manager to downgrade perhaps).
Slim2none4u
Senior Member
- Oct 28, 2011
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The steps to follow are:
1- Uninstall Magisk Manager 26001
2- Flash stock boot / init_boot (depending on your device)
3- Install Magisk 25206
4- Create patch with 25206
5- Flash the patch
Update to Raviantha 1.0.2
Hey guys and girls,
So here´s the next release for stable April firmware! Kernel-wise there were quite a few security updates from google in the source. One of those security fixes serves as a good example to talk about how beneficial running latest linux-stable can be.
There are also a few new nice changes in the kernel that aim to improve both, performance and battery consumption by improving the cpuidle driver.
More information below.
The Power of Linux-Stable
CVE-2023-0266 was disclosed on January 13 2023. It was fixed in linux-stable with 5.10.163 on January 14. I merged 5.10.163 the same day in one of my personal builds. That means the fix was shipped via XDA on my kernel with the February release, just by having up to date linux-stable merged.
Google merged the fix in kernel/common on January 26. Then it usually takes a few months until this fix ends up in actual production kernels, in this case nearly 3 months. April update from google finally has kernel/common merged that includes the fix for CVE-2023-0266.
The Power of broken Magisk Updates
The recently released magisk v26 updates, both for beta and canary channel have broken selinux-contexts for freshly installed modules. Finally found the time to try that yesterday myself and confirm the issue.
It is fixed with this pull request that was merged a few hours ago, but at the time of writing both canary and beta v26 are affected by this bug.
That means if you´re running magisk v26 and flash the powerhint module for the first time the powerhal config file will have a broken selinux-context, which will freeze/crash the phone as the hal can´t read the config file, because selinux blocks.
I´d like to make everyone aware of the instructions in the first post again. Please use magisk stable as I´m not keen on debugging magisk issues. Magisk beta/canary are called beta/canary versions for a reason!
Util-Awareness for TEO cpuidle
The main goal for this patch is to improve latency and improve performance for some workloads. It can also add to improved efficiency and decrased power usage during certain scenarios. Please note that this is still in the range of micro-improvements. It is basically impossible for an end user to "test" those improvements in real life conditions as there are too many variables that completely negate the effect those patches have.
As such I´m not really interested in benchmark score increases, battery life increases/decreases etc. I tested the changes in several micro benchmarks to confirm they have the desired effect.
If you want to read on the details please check the following link.
So enjoy
F2FS-Stable
Thanks to @JakeDHS07 and another tester of mine sending logs I could provide feedback to the f2fs developers, which allowed them to identify and fix a npe that was introduced by the recent f2fs-stable updates.
The fix is included so the other improvements and updates from f2fs-stable could be restored!
Important:
Make sure to flash the powerhint module attached to this post via magisk manager if you haven´t already done so.
Please note that this release is not for the QPR Beta firmware or dev preview, but the stable android 13 firmware!
Please make use magisk stable. Magisk v26, both canary and beta, has broken selinux contexts on freshly installed modules. Please use either stable magisk or canary 25206.
You should download magisk stable only from official magisk release site!
Latest platform tools have issues flashing super.img, please use platform tools 33.0.3 when updating your firmware to march updae.
There are other small improvements as well. Please check my github for those.
The kernel is made for stable A13 firmware, not beta.
I wish everyone a nice day.
Changelog:
- Linux-Stable bumped to 5.10.177
- fix kernel panic in f2fs-driver, in addition restore f2fs-stable updates that introduced the panic
- improvements to memory management
- merge improvements for teo cpuidle gov, make util-aware (improves latency, performance and energy consumption, check this link for more information
- other fixes please check github
Download:
Attached to release post as AFH is currently down.
Make sure to update and keep the powerhint module installed via Magisk Manager!
If you´re coming from another kernel restore stock boot.img, dtbo.img, vendor_kernel_boot.img and vendor_dlkm.img before flashing. Thank you.
Make sure to meet the requirements and read the OP as well as the FAQ before flashing.
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/freak07
Hey guys and girls,
So here´s the next release for stable April firmware! Kernel-wise there were quite a few security updates from google in the source. One of those security fixes serves as a good example to talk about how beneficial running latest linux-stable can be.
There are also a few new nice changes in the kernel that aim to improve both, performance and battery consumption by improving the cpuidle driver.
More information below.
The Power of Linux-Stable
CVE-2023-0266 was disclosed on January 13 2023. It was fixed in linux-stable with 5.10.163 on January 14. I merged 5.10.163 the same day in one of my personal builds. That means the fix was shipped via XDA on my kernel with the February release, just by having up to date linux-stable merged.
Google merged the fix in kernel/common on January 26. Then it usually takes a few months until this fix ends up in actual production kernels, in this case nearly 3 months. April update from google finally has kernel/common merged that includes the fix for CVE-2023-0266.
The Power of broken Magisk Updates
The recently released magisk v26 updates, both for beta and canary channel have broken selinux-contexts for freshly installed modules. Finally found the time to try that yesterday myself and confirm the issue.
It is fixed with this pull request that was merged a few hours ago, but at the time of writing both canary and beta v26 are affected by this bug.
That means if you´re running magisk v26 and flash the powerhint module for the first time the powerhal config file will have a broken selinux-context, which will freeze/crash the phone as the hal can´t read the config file, because selinux blocks.
I´d like to make everyone aware of the instructions in the first post again. Please use magisk stable as I´m not keen on debugging magisk issues. Magisk beta/canary are called beta/canary versions for a reason!
Util-Awareness for TEO cpuidle
The main goal for this patch is to improve latency and improve performance for some workloads. It can also add to improved efficiency and decrased power usage during certain scenarios. Please note that this is still in the range of micro-improvements. It is basically impossible for an end user to "test" those improvements in real life conditions as there are too many variables that completely negate the effect those patches have.
As such I´m not really interested in benchmark score increases, battery life increases/decreases etc. I tested the changes in several micro benchmarks to confirm they have the desired effect.
If you want to read on the details please check the following link.
So enjoy
F2FS-Stable
Thanks to @JakeDHS07 and another tester of mine sending logs I could provide feedback to the f2fs developers, which allowed them to identify and fix a npe that was introduced by the recent f2fs-stable updates.
The fix is included so the other improvements and updates from f2fs-stable could be restored!
Important:
Make sure to flash the powerhint module attached to this post via magisk manager if you haven´t already done so.
Please note that this release is not for the QPR Beta firmware or dev preview, but the stable android 13 firmware!
Please make use magisk stable. Magisk v26, both canary and beta, has broken selinux contexts on freshly installed modules. Please use either stable magisk or canary 25206.
You should download magisk stable only from official magisk release site!
Latest platform tools have issues flashing super.img, please use platform tools 33.0.3 when updating your firmware to march updae.
There are other small improvements as well. Please check my github for those.
The kernel is made for stable A13 firmware, not beta.
I wish everyone a nice day.
Changelog:
- Linux-Stable bumped to 5.10.177
- fix kernel panic in f2fs-driver, in addition restore f2fs-stable updates that introduced the panic
- improvements to memory management
- merge improvements for teo cpuidle gov, make util-aware (improves latency, performance and energy consumption, check this link for more information
- other fixes please check github
Download:
Attached to release post as AFH is currently down.
Make sure to update and keep the powerhint module installed via Magisk Manager!
If you´re coming from another kernel restore stock boot.img, dtbo.img, vendor_kernel_boot.img and vendor_dlkm.img before flashing. Thank you.
Make sure to meet the requirements and read the OP as well as the FAQ before flashing.
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/freak07
Last edited:
Flashed the kernel after April update. Did you forget to rename the version number? The kernel version is now 5.10.177-Kirisakura-Raviantah_1.0.1_6-998885-g2fb47d74b222
Thanks for spotting this! Fixed the release post and uploaded the correct zip!
Thanks to @tkxabcdefg i added the correct kernel.zip to the release post!
Please redownload in case you flashed earlier today. It must say 1.0.2 as kernel version in settings/kernel managers.
Please redownload in case you flashed earlier today. It must say 1.0.2 as kernel version in settings/kernel managers.
Magisk Stable & Beta were just updated to v26100 and Canary to v26101. This includes the fix to the powerhint module. I just flashed the module and kernel on my 7 pro and no freezing or crashing.
New magisk released. Can anyone confirm that this https://github.com/topjohnwu/Magisk/pull/6866 is fixed with the new release?
@Freak07 As powerhint module is still v7 does that mean you dont need to re flash it if you already on v7 from last month?
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14Update to Raviantha 1.1.5
Hey guys and girls,
This is the presumably last release for A13 from my end. Google surprisingly delayed the stable A14 update and decided to push out a late September update for A13.
I didn´t plan to push out another A13 release, that´s why I switched my build environment to the A14 source/branches so I can have a head start.
The September update however contains a security patch for the mali gpu driver regarding an exploit that´s currently under limited targeted exploitation according to Google.
That´s why I decided to push out an update from my end as well, so there´s a proper final version for A13.
Linux-Stable up to 5.10.195 is included as well. Respectively .196, as .196 is just a revert for a broken commit that I reverted while merging .195 anyway.
There are bigger changes in the pipeline, some of which I tested for a few months now.
As also already hinted ,thanks to @Sultanxda there will be even more improvement and changes in the future as already stated here.
Those will be released alongside the A14 update. Maybe not all with the initial release.
Important:
Make sure to flash the powerhint module attached to this post via magisk manager if you haven´t already done so.
Please note that this release is not for the QPR Beta firmware or dev preview, but the stable android 13 firmware!
Please make use magisk stable if you don´t know your way around bugs and don´t want to actively help debugging magisk development.
You should download magisk stable only from official magisk release site!
Latest platform tools have issues flashing super.img, please use platform tools 33.0.3 when updating your firmware
There are other small improvements as well. Please check my github for those.
The kernel is made for stable A13 firmware, not beta.
I wish everyone a nice day.
Changelog:
- Include September source drop
- Linux-Stable bumped to 5.10.195 (respectively .196)
- other fixes please check github
Download:
Attached to release post as AFH is currently down.
Make sure to update and keep the powerhint module installed via Magisk Manager!
If you´re coming from another kernel restore stock boot.img, dtbo.img, vendor_kernel_boot.img and vendor_dlkm.img before flashing. Thank you.
Make sure to meet the requirements and read the OP as well as the FAQ before flashing.
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/freak0713
Nothing past the last u beta 5.3 on their git as of now.Hi @Freak07, has Google posted the source code for the September kernel yet? I've been traveling in a completely different timezone so somewhat confused with Google's timing right now!
I started working on the A14 release in the meantime.
I guess a few waited for those news already.
Will be a huge release, stay tuned10It seems basically all of the discussion here drifts away to off-topic and nothing is related to development of the kernel which is the actual topic of this thread.
Please try to use threads that actually cover your topic. I don't mind occasional off-topic, I'll try to explain everything to my best ability even if it's not strictly kernel related. Since I think it strays of a bit to far at the moment I feel this statement might be necessary.
If posts begin to start with "this is not kernel related" it´s probably better to search for a thread covering this exactly topic and post there.
It´s really frustrating to see this again and again lately.
Just a note here. I think it´s completely unnecessary that you use my words from a previous post that has no relation whatsoever to the problem you described.
All devices heat up while charging like @Slim2none4u said. Different OEMs emply different thermal policies while charging.
Of course ambient temperature is closely related to your device temperature. While usage, while charging, while the phone is just sitting there, since there´s no active cooling involved.
Here are the thresholds to which your phone is allowed to go up to while charging.
This also kind of means that if you cool the phone by having an AC with a fan next to it while charging, it will still try to reach 39°C skin temps if the charging current peak is not reached during fast charging.
Note that those skin temps in the file I linked are NOT exactly the same as the battery temp displayed by apps.
Also note that battery temp displayed by apps is not the same across different devices, but just a virtual temp based on reading from different sensors. Each OEM decides by themselves, how this is calculated.
Example from my end. My p7pro is currently charging on the stock google charger on my desk. It reached 94% charge and the device temp is 34°C as it usually starts to cool down once it reaches 80-90% charge as charging rate slows down there. My ambient temp is about 20°C in that room. That´s completely normal.
Now while I typed the post it reached 96% and cooled down to 32°C battery temp displayed by app.
The phone feels warm, just like any other phone of mine that is being fast charged or was being fast charged.. (Pixels, Asus, OnePlus, Sony.)
While it charges it goes close to 40°C, just like intended and feels warmer to the touch.
As to why yours seems to be hotter than mine I can´t answer.
Could be a simple thing like google backup starting to do the daily backup on your phone while charging towards the end of that charging session, generating additional heat.
Could be something else like @Locoman_ hinted at. Could be a faulty charger, could be a non stock charger that doesn´t work as well.
I know you seem to be plagued on your device, but I don´t think there´s any reason to hijack my thread if there´s no relation to that custom kernel given.
There are a few threads on this forum about this.
Why do you post it here if it´s not kernel related?
No issues on my end, just like @TotallyAnxious.
Basic and device integrity passing with the usual fixes, google pay works just fine.
There are threads on XDA that cover exactly this topic.10
Good question, I basically waited for it. The answer is: Yes most probably.
All drivers are built into the zImage, which sits in the boot.img, instead of drivers being distributed across boot, vendor_kernel_boot and vendor_dlkm.img like it's now default on latest devices with gki style.
Since boot partition is not avb checked, the kernel can be just flashed without disabling the flags.
I did the same thing on zenfone 9.
The difference for me is that google pushes a fully working environment that compiles the kernel the gki way (so boot, dtbo, vendor_kernel_boot and vendor_dlkm) without me doing anything, while on zenfone 9 there's no such environment to begin with.
To compile the kernel that has all drivers built into the zImage and only boot.img needs to be changed to flash a kernel, requires quite a lot of changes on how the repo is structured.
So in the case of zenfone 9, there's was no working build environment anyway and changing the kernel repo didn't put any additional work in the future in place that wouldn't have already been there before even starting.
On the pixels however the already working repos need to be changed around, so the compilation works that way, putting more "maintenance" burden for me in place, since I can no longer just simply fetch and merge source updates. It will involve a bit more work than previously.
But I guess the ease of use for the users will win here.
I think just flashing boot.img without the need to keep the avb flags disabled every time a user updates their device is probably the way forward. (And just flashing boot.img makes debugging kernel panics if drivers sitting in vendor_dlkm are involved easier for me as well)9
So why do you think there's the need for your initial reply in this thread in the first place if it's not related to the development of this kernel or to the kernel like you just said?
How is anything of this reply now relevant to the development of this project?
Please check the rules for posting in development.
To quote from there:
- Please keep all non Development relevant chatter off the DEV project topics, feel free to create a new topic in General for non Development comments about specific ROM / MOD / THEME / etc... valid replies within a DEV project are: BUG Reports, Problem, Troubleshooting Steps & Logs.
- ... and Please! keep all your personal bickering via PMs, do not pollute the forum with your personal indifferences.
If you have a problem with a specific member please contact the Moderators for help, that's what we're here for, but we are not babysitters, we are here to gather, organize and provide useful information for our over priced phones.
Feel free to discuss your opinion or what you believe to be facts about this phone in general in the relevant threads, but not here. This is about development of this kernel. This is not a place for opening discussion and steering posts of other users or my reply to those posts into discussions about what you think is not a rare and random occurrence on this phone.
Like mentioned in the thread linked above, if there´s no thread covering your topic:
I don´t have an innate inability to discuss heat related problems. I know how hot the SoC runs, I know exactly how the thermal hal works and the thresholds as well as the thresholds during charging ( I told you where to look for those). If I want to discuss those matters I do so in the relevant threads.
Even if posts are off-topic I usually try to reach a hand and point in directions that might be worth looking into. But if the same matter with no actual relation to development in here is brought up again and again, it´s going in circles and is off-topic.
Due to how hot the SoC actually runs I know how quickly the phone can get hot if anything is wrong. But this is not the right place to discuss those matters in detail, just like it´s not the right place to seek help or discuss safety-net not passing.
The kernel touches a lot of areas, but at one point things are just not related to development in here. - Please keep all non Development relevant chatter off the DEV project topics, feel free to create a new topic in General for non Development comments about specific ROM / MOD / THEME / etc... valid replies within a DEV project are: BUG Reports, Problem, Troubleshooting Steps & Logs.
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87Kirisakura-Kernel for the Pixel 7/Pro
Hello everyone,
To keep it short: Here is Kirisakura - Kernel for the Google Pixel 7 Pro aka Cheetah and the Pixel 7 aka Panther, together Pantah.
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.
By merging linux-stable regularly we get most security updates months ahead of the stock kernel and also before they even end up in the android security bulletin.
The kernel includes a lot of improvements and contributions from other developers as well. Without those contributtion this kernel would not exist as it is.
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 13 Stable
- Linux-Stable-Upstream included to 5.10.195
- Compiled with prebuilt Google clang 17.0.3
- Backport entire RCU subsystem to linux 6.0
- Lazy RCU which should result in power-savings while the device is lightly-loaded or idling, more information here
- Backport Maple tree from Linux 6.1
- improve preallocations from maple tree (affects especially android)
- reduce necessity to rewalk the maple tree
- Per VMA-locks in conjunction with Maple Tree RCU-Mode (improve app launch time, this feature in general benefits greatly from lazy rcu!)
- further improve maple tree/per-vma locks introduced in an earlier release
- Dynamic Energy Models depending on device state
- make TEO-Cpuidle util-aware (improves latency, performance and decreases energy consumption for certain workloads, more information here)
- introduce runnable boosting, wire it up with pixel_sched
- improve CPU throttling behaviour
- improvements to uclamp, prevent capacity inversion (reduce missed frames)
- greatly speed up camera launch time!
- merged kernel/common (improvements to android-common-kernel straight from google)
- MM subsystem reworked (more info and some patchsets linked in this post)
- Multi-gen LRU backported/reworked and enabled (more info here, here as well and here) to improve mm and reduce cpu cycles, latest V15 state
- 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
- restrict maximum CPU-Freqs during screen off/ idle to 1.4GHZ 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
- merge and enable f2fs block_age-based extent cache (improve the accuracy for data temperature classification, reduce the garbage collection overhead after long-term data updates)
- TCP backports from mainline
- SSG IO scheduler for reduced overhead and less CPU cycles (more lightweight and android optimized)
- scheduler backports from linux-main
- mm updates from linux-main
- locking updates frm linux-main
- improve memory performance by tweaking google´s eh zram implementation
- fix sysfs endpoint for googles eh zram
- 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 )
- include bbrv2 from google, more info here
- Enable support for TTL spoofing
- important patches from kernel/common for 5.10 (here are more details)
- increase priority of GPU work
- several updates from QPR beta, and a few from Pixel 6 that googles missed to include in the pixel 7 kernel
- improve thermals
- change compaction proactiveness based on device state for improveed memory management
- improve ZRAM usage
- reduce overhead
- improve performance and efficiency by properly wiring up pixel_sched with teo util awareness (thanks @ada12 for spotting this!)
- update to cpuset/cgroup subsystem (speeds up camera launches, device unlocks etc as cpusets are switched on those conditions, patches reduce overhead in those conditions)
- flashing the kernel will preserve root
CleanSlate Features
- 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)
- Check the CleanSlate thread for more information about those features
- The CleanSlate thread also contains the apps that allows you to control those features!
- If you consider those features useful, maybe consider purchasing the apps in the PlayStore or a small donation to @tbalden, he deserves it! Don´t forget to switch to beta channel for those apps, as this is needed for device running A13!
Various Optimizations:
- update several drivers to use power efficient workingqueues (for example wlan driver)
- f2fs: reduce timeout for uncongestion
- f2fs: Demote GC thread to idle scheduler class
- f2fs: set ioprio of GC kthread to idle
- tcp: enable advanced tcp, give user more options for tcp alorithm
- mm: vmstat: use power efficient workingqueues
Wakelock Blocker:
- advanced wakelock blocker with the ability to block kernel wakelocks (dangerous, use with caution, please read this for further info). You should only block kernel wakelocks in case you face uncontrollable scenarios, like company wifi causing a wakelock to be active 100% of the time! Blocking kernel wakelocks to "improve" battery life almost always backfires and causes issues!
Powerhint Module:
- restrict little cluster to 1,4ghz mid cluster to 1,4ghz and big cluster to 1,4ghz during screen off, to reduce battery usage for example during music playback
- only use little cores during screen off/device suspend
- account for scheduler and other changes done to the kernel
- boost memory interface controller during interaction (decreased missed frames, improved soc efficiency according to google docs)
- 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)
- switch between default and custom idle energy model on device is being interacted with / device idle.
- reduce missed frames during scrolling/device interaction by adjusting uclamp boosts
- dynamically adjust target load for memory interface during interaction.
- remove dynamic GPU policy change as it´s causing instability and is unneeded due to GVFS period
- implement handling during video recording of CPU like Google did on QPR A13
- more small improvements
DOWNLOAD:
Downloads are attached to the release posts linked below in the changelog section.
Please note that androidfilehost is currently not working properly.
Link to AFH:
Deprecated afh download, still here for old releases:
Changelog:
Android 13.0.0 Stable (not QPR beta!)
1.0.0 Initial Release | Mirror for Download in case AFH is not working
1.1.0 https://forum.xda-developers.com/t/...-pixel-7-pro-aka-pantah.4509795/post-87743627
1.2.0 https://forum.xda-developers.com/t/...-pixel-7-pro-aka-pantah.4509795/post-87822161
1.2.1 https://forum.xda-developers.com/t/...-pixel-7-pro-aka-pantah.4509795/post-87878321
1.2.2 https://forum.xda-developers.com/t/...-pixel-7-pro-aka-pantah.4509795/post-87944505
1.2.3 https://forum.xda-developers.com/t/...-pixel-7-pro-aka-pantah.4509795/post-87960183
1.2.4 https://forum.xda-developers.com/t/...-pixel-7-pro-aka-pantah.4509795/post-88108123
1.3.0 https://forum.xda-developers.com/t/...-pixel-7-pro-aka-pantah.4509795/post-88286027
Raviantah_1.0.0 https://forum.xda-developers.com/t/...-pixel-7-pro-aka-pantah.4509795/post-88316285
Raviantah_1.0.1 https://forum.xda-developers.com/t/...-pixel-7-pro-aka-pantah.4509795/post-88323527
Raviantah_1.0.2 https://forum.xda-developers.com/t/...-pixel-7-pro-aka-pantah.4509795/post-88399915
Raviantah_1.0.4 https://forum.xda-developers.com/t/...-pixel-7-pro-aka-pantah.4509795/post-88497279
Raviantah_1.1.0 https://forum.xda-developers.com/t/...-pixel-7-pro-aka-pantah.4509795/post-88645103
Raviantah_1.1.2 https://forum.xda-developers.com/t/...-pixel-7-pro-aka-pantah.4509795/post-88719667
Raviantah_1.1.3 https://forum.xda-developers.com/t/...-pixel-7-pro-aka-pantah.4509795/post-88847285
Raviantah_1.1.4 https://forum.xda-developers.com/t/...-pixel-7-pro-aka-pantah.4509795/post-88866285
Raviantah_1.1.5 https://forum.xda-developers.com/t/...-pixel-7-pro-aka-pantah.4509795/post-89038079
Requirements
- vbmeta flags for verity/verification disabled (this requires a wipe if you´re coming from stock with those flags enabled), check the FAQ for information on how to do this
- 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, use stable in case you want to be absolutely safe)
- IMPORTANT: Unrelated to the kernel, but update both slots of your phone to A13 before you flash anything to your device!
- it´s handy to have a backup and a way to return back to stock (check the faq for that)
- make sure to download the correct kernel version for your firmware. (you can´t flash a kernel made for stable firmware on a QPR beta or dev preview and expect there to be no isses, the release posts mention which firmware the respective kernel releases are compiled for)
- this kernel is tested on stock google firmware. If you want to use it on custom roms you´re kind of on your own as I can´t account and give support for any changes custom roms apply that could render the kernel incompatible. (e.g. if you´re custom rom is still on the previous months update, there may be issues flashing an updated kernel for the next month on top or custom roms requiring specific kernel changes to work correctly )
- it´s always best to start on stock images and don´t have another custom kernel flashed when flashing this kernel for the first time. consecutive flashes can just be installed on top, if not I´ll mention it in the release post
- read the first and second post, there's a lot of valuable information
How to flash the Kernel:
1a. Make sure you tick all the requirements above
1b. Make sure to flash the release made for your firmware! Usually the release post contains information on that
1. Download the kernel.zip (unified for both devices) and the correct powerhint module depending on your device (Pixel 7 = panther || Pixel 7 Pro = cheetah)
2. Flash the powerhint module via magisk manager as you would any other magisk module! Make sure to flash the latest one. It will be mentioned in the release post if there´s an update.
3. Flash the kernel.zip via EXKM, FKM or kernel flasher. Root will be preserved.
4. Reboot and profit.
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 pixels, avb, hashtree patcher, the counsel and the kernel flasher!
@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/freak0751Update to 1.2.4
Hey guys and girls,
So here´s the next release. February source did basically not contain anything new for this kernel (as all patches were already included since months due to merging linux-stable and kernel/common in advance) except a stability and a security fix for the GPU driver (which is vendor specific so of course not impacted by linux-stable etc).
Nonetheless this is a very big release with large underlying changes.
Short explanation follows below.
Please note that this release is not for the QPR Beta firmware, but the stable android 13 firmware!
Make sure to update/flash the new powerhint module attached to this post via magisk manager as it´s been updated!
Maple Tree / Per VMA-locks via Maple Tree in RCU-Mode
Linux 6.1 finally merged the Maple Tree patchset. I had my eyes on that patchset for quite a while now. I backported it a few months ago (back in november iirc) but at that time I still ran into a few problems with it so it never made it into a release on XDA.
However after discovering work done on per vma-locks, which builds directly on the benefits that maple-tree provides interest was sparked again. Decided to pull it in again and fix the remaining issues.
If you´re interested in details read the linked topics.
Basically those patches reduce app launch time as well as lock contention. Additionally per vma-locks directly utilizes lazy-rcu, which was backported in 1.1.0. Usually I´m very hesitant when it comes to kernel changes actually translating to real world power consumption improvements, but lazy-rcu is one of the few patchsets that translate to a small improvement for everyone regardless of the usage.
So the new per VMA-lock patchset directly benefits from the previous backport of lazy-rcu.
App launch times in ms for cold launching slack app with and without the Per-VMA lock patchset:
F2FS block_age-based extent cache
Latest f2fs-stable update contained an interesting new feature called block_age-based extent cache. It´s another optimization done in hindsight to android needs. It´s always nice to see different OEMs (in this regards xiaomi) cooperating and improving android as a whole and not just keep those patches to themselves. Since it´s pushed to f2fs-stable it will sooner or later (probably rather later as trickling through until it ends up on actual production devices always takes a lot of time) find its way to the majority of android devices.
The features allows to record data block update frequency of the extent per inode, in order to provide better temperature hints for data block allocation thereby improving the accuracy for data temperature classification and reducing the garbage collection overhead after long-term data updates.
Memory Interface Controller Boosting
Boost Memory Interface Controller slightly to a fixed min_freq value during interaction, instead of relying solely on the governor taking the decision as it doesn´t ramp up fast enough during interaction in some cases.
Research of exynos/tensor characteristic shows that the SOC does not perform optimally when cpu freqs ramp up quickly (during interaction, scrolling, touch the screen) and memory interface controller not following suite quite fast enough. This makes the soc overall perform less efficient. The boost aims to correct this behavior.
The boost also results in a tiny few less missed frames during interaction as a bonus.
There are other small improvements as well. Please check my github for those.
The kernel is made for stable A13 firmware, not beta.
I wish everyone a nice day.
Changelog:
- Linux-Stable bumped to 5.10.167
- Backport Maple tree from Linux 6.1
- Per VMA-locks in conjunction with Maple Tree RCU-Mode (this benefits greatly from lazy rcu!)
- bump f2fs to latest f2f2 stable state
- merge and enable f2fs block_age-based extent cache (improve the accuracy for data temperature classification, reduce the garbage collection overhead after long-term data updates)
- improvements to the scheduler from QPR2 Beta 2 and Beta 3
- improvements to memory management from QPR2 Beta 2
- improve ZRAM usage
- boost memory interface controller during interaction (decreased missed frames, improved soc efficiency according to google docs)
- import security fixes and performance improvments to camera driver from QPR2 Beta
- fixes/improvements to to memory management
- security fixes/ improvements from kernel/common
- other fixes please check github
Download:
Attached to release post as AFH is currently down.
Make sure to update and keep the powerhint module installed via Magisk Manager!
If you´re coming from another kernel restore stock boot.img, dtbo.img, vendor_kernel_boot.img and vendor_dlkm.img before flashing. Thank you.
Make sure to meet the requirements and read the OP as well as the FAQ before flashing.
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/freak0749Update to 1.2.1
Hey guys and girls,
So here´s the next release. As already hinted it includes some of the kernel changes from the QPR2 Beta. Please note the kernel is made for the stable firmware! You need to be on December stable firmware release to be able to install and run this kernel properly!
Make sure to flash both, the kernel.zip and the powerhint magisk module as both are updated.
Google did some significant updates in that latest qpr2 update, which is great to see.
The GPU driver is now based on version r38p1. This fixes several vulnerabilities that made the news recently.
AOC driver and WiFi driver were also updated and most of those improvements ended up in this kernel release as well.
There were several improvements to memory management done by google, which should result in improved efficiency, improved reclaim and also reduced jank.
There are a few other nice patches that should improve performance and generally improve system responsiveness. For specifics please check those on github.
Scheduler patches from linux-main are also included.
The lazy rcu patchset was updated to the latest state that was also recently merged into the linux kernel. (more info about lazy rcu check here)
Kernel is now compiled with latest 16.0.2 prebuilt Clang from Google.
There are other small improvements as well. Please check my github for those.
I wish everyone a nice day.
Changelog:
- Linux-Stable bumped to 5.10.159
- Bump prebuilt clang to latest 16.0.2 from Google
- include most of the QPR2 improvements so we can enjoy them ahead of time
- fixes/improvements to to memory management
- import all improvments from google QPR2 to powerhint module
- other fixes please check github
Download:
Attached to release post as AFH is currently down.
I´ll push to AFH once it´s back up.
Make sure to update the powerhint module via Magisk Manager!
If you´re coming from another kernel restore stock boot.img, dtbo.img, vendor_kernel_boot.img and vendor_dlkm.img before flashing. Thank you.
Make sure to meet the requirements and read the OP as well as the FAQ before flashing.
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/freak0743Update to Raviantha 1.0.4
Hey guys and girls,
So here´s the next release for stable May firmware! (although technically it should still work on April as there were no changes that weren´t already present.)
This release is not including the bigger changes I was alluding to during my last post in this thread, but it still includes some big improvements that warrant a new release.
More information below.
Important:
Make sure to flash the powerhint module attached to this post via magisk manager if you haven´t already done so.
Please note that this release is not for the QPR Beta firmware or dev preview, but the stable android 13 firmware!
Please make use magisk stable if you don´t know your way around bugs and don´t want to actively help debugging magisk development.
You should download magisk stable only from official magisk release site!
Latest platform tools have issues flashing super.img, please use platform tools 33.0.3 when updating your firmware
There are other small improvements as well. Please check my github for those.
The kernel is made for stable A13 firmware, not beta.
I wish everyone a nice day.
Changelog:
- Linux-Stable bumped to 5.10.179
- bump clang to 17.0.1 stable
- bump f2fs-stable to latest
- loads of improvements, bugfixes etc to memory management from latest linux main
- improvements to memory management from 6.1 kernel common
- improvements to MGLRU (check first post for more info about MGLRU)
- updates/improvements to RCU from latest linux main
- updates to lazy RCU from latest linux main
- fixed screen-off max cpufreq restriction (thanks to @elesbb for making me aware)
- other fixes please check github
Download:
Attached to release post as AFH is currently down.
Make sure to update and keep the powerhint module installed via Magisk Manager!
If you´re coming from another kernel restore stock boot.img, dtbo.img, vendor_kernel_boot.img and vendor_dlkm.img before flashing. Thank you.
Make sure to meet the requirements and read the OP as well as the FAQ before flashing.
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/freak0741Update to 1.1.0
Hey guys and girls,
So here´s the next release. I finally feel it´s ready to be publicly released as there was not a single issue encountered over the last two weeks.
Make sure to flash both, the kernel.zip and the powerhint magisk module!
The kernel is now at 5.10.155 way ahead of the stock kernel. To further emphasize the importance of this. About 90% of kernel security issues are solved in linux stable.
5.10.148 and 5.10.149 fixed the CVEs discussed here and here. Those were fixed on kernel common on November 2nd. It might take up to a few months until they trickly down into any officially shipped android kernel!
The initial 1.0.0 release, had those CVEs fixed already as 5.10.149 was merged.
What also needs to be kept in mind is that a big part of those security issues are resolved in linux-stable, sometimes months ago, before those patches end up in a monthly security patch. Additionally to that, the security patches on android devices are about 3 months behind the discovery of those vulnerabilities.
This release features a few major changes, which I want to explain in greater details, so excuse the longer release post. I´d appreciate if everyone takes the time to at least read it.
Introduction of Lazy RCU
1.1.0 has the entire(!) RCU subsystem updated to latest linux 6.0 kernel state. This also allowed for Lazy RCU to be merged into the kernel, which should result in power-savings while the device is lightly-loaded or idling (which is basically the case all the time a smartphone isn´t being interacted with (nothing touching the screen and no other workload such as video editing is done).
If you´re interested in details check the slides, which are also linked in the article I linked above.
A very simplified explanation: RCU functionality can be called 1000s of times a second, batching RCU calls can save power by not calling as often.
That´s one of the changes I wanted to be tested extensively, as there are a few 10000 lines of code changes.
Please keep in mind, those are kernel changes and battery life will not be improved magically by huge amounts, due to such a change, even if the change itself is massive.
Example: If you raise or lower the display brightness by around 10% over an entire day, you´ll see a bigger impact.
Reading the OP gives you a good idea what this project is about!
Dynamic Energy Model
Google introduced the possibility to use different Energy Models "on the fly" a while back in the Pixel 6 and Pixel 7 kernel.
I played around with this during the last few weeks and ironically Google did something similar in the QPR A13 Beta when I checked the firmware dump. Google switches to a different Energy Module while taking Videos. Based on my understanding to control heat better during video recordings.
However I had another idea, but the mechanism I use to switch the profiles taps into the same system.
While the device is idle, a different Energy Model is used, compared to when interaction is happening.
While interaction is happening there are many boosts in play already to bias tasks to get executed as quickly as possible anyway. But switching to a different energy model allows us to basically bias tasks to get even more prominently scheduled to the little and middle cores. Since the mid cores are a78 on p7 and way more energy efficient, this should give as a double positive effect. As during idle state there are no boosts active the scheduler can now freely decide how to use EAS to the best to place the tasks as efficiently as possible.
The energy module was tuned, so the scheduler prefers little and mid cores during idle. (nothing touching the screen, watching videos, listening to music, reading websites etc.)
Additionally to this I decided to include the changes Google did on A13 QPR Beta while taking video to also include already in the kernel.
Powerhal
Switch between default and idle energy model on device is being interacted with / device idle.
Reduce missed frames during scrolling/device interaction by adjust uclamp boosts.
Dynamically adjust target load for memory interface during interaction.
Remove dynamic GPU policy change as it´s causing instability and is unneeded due to GVFS period
Implement handling during video recording of CPU like Google did on QPR A13 stable
Raise minfreqs during screen off to 1,4ghz
Playback over USB C to 3.5mm Dongles
Some users were experiencing issues while using usb-c to 3.5mm dongles while running my kernel. After a long time I finally discovered how to reproduce the bug as the logs did not point towards any kernel error. It happens only if default usb configuration in developer options is set to anything else than "no data transfer". If "no data transfer" is selected there´s no issue at all.
A few commits from linux-stable for the usb dwc3 driver breaks playback when screen is shut off or cycling through the "default usb configuration" settings, which causes the aoc driver that´s responsible for playback to shut down.
Reverting those commits fixes the issue.
Thanks to @WhoIsJohnGalt1979 and @Hurt Copain for nagging me about the issue and providing logs, I finally found a way to reproduce the issue so I was able to debug it.
Given that playback is "glitchy" (a brief audio stutter) on stock kernel as well, when either cycling through different "default usb configuration" settings or turning screen on/off, that driver is generally very wonky. A user told me however that this glitch is solved in QPR Beta. So that´s good to hear if that´s the case.
Other improvements
Several other improvements from kernel/common (for higher branches than 5.10) and linux-main were backported to this branch so we can benefit from those improvements. For details please check my git.
I´d like to write all of this with more detail, but at the moment I lack the time to do so.
Kernel is compiled for stable A13, not A13 QPR Beta!
I wish everyone a nice day.
Changelog:
- Linux-Stable bumped to 5.10.155
- Backport entire RCU subsystem to linux 6.0
- - Lazy RCU which should result in power-savings while the device is lightly-loaded or idling, more information here
- Dynamic Energy Models depending on device state
- Fix audio playback stopping for some users when turning screen off (thanks for @WhoIsJohnGalt1979 and @Hurt Copain for nagging me about the issue and providing logs)
- improve CPU throttling behaviour by backporting a QPR Beta change
- improvements to MGLRU
- improvements from linux-mainline for several subsystems
- scheduler
-
02595c9fb4ec sched/core: Fix comparison in sched_group_cookie_match()
407e4ccbb158 sched/fair: Move call to list_last_entry() in detach_tasks
0ea56a65b686 sched/fair: Cleanup loop_max and loop_break
0461c9736ec2 sched/fair: Make sure to try to detach at least one movable task
f2489ca21b11 sched/fair: Cleanup for SIS_PROP
5a3074a7ac79 sched/fair: Default to false in test_idle_cores()
bb95868debb0 sched/fair: Remove useless check in select_idle_core()
50112e040e6a sched/fair: Avoid double search on same cpu
2457687f35d3 sched/fair: Remove redundant check in select_idle_smt()
-
- memory management
-
6bf69138a12b mm: rename p4d_page_vaddr to p4d_pgtable and make it return pud_t *
9819fcefb782 mm: rename pud_page_vaddr to pud_pgtable and make it return pmd_t *
997cdba71861 mm: add vma_lookup(), update find_vma_intersection() comments
eb1eccad20cb mm/page_alloc: fix obsolete comment in deferred_pfn_valid()
1f30d4f3fb20 mm/page_alloc: remove obsolete gfpflags_normal_context()
17dd220de848 mm/page_alloc: use costly_order in WARN_ON_ONCE_GFP()
4d7be8d8d6d4 mm/page_alloc: init local variable buddy_pfn
521b49f4067c mm/page_alloc: use helper macro SZ_1{K,M}
9838ea6feaee mm/page_alloc: use local variable zone_idx directly
d049e3821e8b mm/page_alloc: add missing is_migrate_isolate() check in set_page_guard()
5dc1c3c60469 mm: remove obsolete pgdat_is_empty()
55e89c7708e3 mm/page_alloc: fix freeing static percpu memory
bd801ed8eace mm/page_alloc: add __init annotations to init_mem_debugging_and_hardening()
ce00e122335e mm/page_alloc: remove obsolete comment in zone_statistics()
cc20df37215b mm: remove obsolete macro NR_PCP_ORDER_MASK and NR_PCP_ORDER_WIDTH
97e15d20dd79 mm/page_alloc: make zone_pcp_update() static
f7425d856d30 mm/page_alloc: ensure kswapd doesn't accidentally go to sleep
236a9831f7e4 mm: add merging after mremap resize
bd1537226f30 mm: mremap: fix sign for EFAULT error return value
4fe39974c254 mm/mremap: avoid unneeded do_munmap call
3983a53d85a6 mm/mremap:: use vma_lookup() instead of find_vma()
b832f38c3630 mm, hugepages: add mremap() support for hugepage backed vma
23aa8d328a4c mm/mremap: allow arch runtime override
b029910a3ec8 mm/mremap: use pmd/pud_poplulate to update page table entries
53093a2f034d mm/mremap: don't enable optimized PUD move if page table levels is 2
c7b8580c66ff mm/mremap: convert huge PUD move to separate helper
d7e1ce9e582e mm/mremap: fix memory account on do_munmap() failure
a2a195324435 mm/mremap: use vma_lookup() in vma_to_resize()
7f87797e053b mm/mremap: don't account pages in vma_to_resize()
bbebb360b5e2 mm: forbid splitting special mappings
9fce5b920e9d mremap: check if it's possible to split original vma
089557da4960 vm_ops: rename .split() callback to .may_split()
c180d1867972 mremap: don't allow MREMAP_DONTUNMAP on special_mappings and aio
e7404be1ba61 mm/mremap: for MREMAP_DONTUNMAP check security_vm_enough_memory_mm()
5bae8c6fbfff mm/mremap: account memory on do_munmap() failure
281904d82593 mm: refactor of vma_merge()
-
- PSI
-
d95535a6cabf sched/psi: Fix periodic aggregation shut off
73abf1a6b993 psi: dont alloc memory for psi by default
UPSTREAM: psi: Fix psi state corruption when schedule() races with cgroup move
df3995427bf1 sched/psi: Remove unused parameter nbytes of psi_trigger_create()
feb99cdbd69e psi: Fix PSI_MEM_FULL state when tasks are in memstall and doing reclaim
83fc90cd1a63 psi: Reduce calls to sched_clock() in psi
f6af1db49cbd psi: Optimize task switch inside shared cgroups
317f29565dd3 psi: Pressure states are unlikely
7e17bae683a3 psi: Use ONCPU state tracking machinery to detect reclaim
118d212fd15e psi: Add PSI_CPU_FULL state
-
- more details please check github
- increase priority of GPU work
- binder fix
- updates from kernel/common to several subsystems
- tweak powerhal for improved performance/efficiency
- Switch between default and idle energy model on device is being interacted with / device idle.
- Reduce missed frames during scrolling/device interaction by adjust uclamp boosts.
- Dynamically adjust target load for memory interface during interaction.
- Remove dynamic GPU policy change as it´s causing instability and is unneeded due to GVFS period
- Implement handling during video recording of CPU like Google did on QPR A13 stable
- Raise minfreqs during screen off to 1,4ghz
Download:
Attached to release post as AFH is currently down.
I´ll push to AFH once it´s back up.
Make sure to update the powerhint module via Magisk Manager!
If you´re coming from another kernel restore stock boot.img, dtbo.img, vendor_kernel_boot.img and vendor_dlkm.img before flashing. Thank you.
Make sure to meet the requirements and read the OP as well as the FAQ before flashing.
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/freak07 - scheduler
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