Development [Kernel][26.03.2024][Android 14.0.0 Stable]Kirisakura_Raviantah 2.2.1 for Pixel 7/Pro aka "Pantah"

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You're like the fine print guy at a law firm. Not saying you didn't say it, but it isn't all that obvious.

also, the adb command line doesn't work (can't disable verity or verification, which I tried when I first got the device). The only real way is the flash tool, and this is with up to date sdk tools.
I know people have had success using the command line but for me, it’s just easier to use the flash tool because it does everything I needed to do with one click. You may have the same experience
 
Last edited:
CleanSlate is a stock kernel except the CleanSlate features.
Battery life is the same as on stock I´d say. Depending on usage, it might be slightly better (that´s the case for me, as I´m sharing with the community what I use personally) or maybe worse. But again, those shouldn´t make a difference to stock, that result in "horrid" as you described.

The only thing that interests me is which CleanSlate features do you actually use? :)

There´s no need to tweak anything. Make sure the powerhint magisk module is installed.

I´m sure your drain comes from an app or service that´s either hogging resources, stuck or constantly crashing.
Also keep in mind battery life depends on usage, network quality, your location, wifi quality, screen brightness, installed apps, background processes, server side updates etc.

There are a few tips I can give you however.

Use top command in terminal to check if something is hogging CPU while the screen is on and the device is idling (no interaction, no apps running, nothing touching the screen).
Attached is an example of how it looks on my phone while it's idle.

J
Use either battery historian or better battery stats to check idle drain.
In BBS set a custom reference point, let the phone sleep face down, screen off for a few hours and check wakelocks.
Or take a bug report in the morning and feed it to battery historian. The visualization there's is very nice and informative.


Yeah from time to time the "old spirit" of XDA is emerging here. I "felt" that as well.

I use Linux though I could use windows if I had to. Got docker installed, pulled a bug report this morning and have it saved. When I try to get to battery historian I’m getting an error and I’m pretty sure the error is in this line;

Code:
docker --run -p port_number:9999 gcr.io/android-battery-historian/stable:3.0 --port 9999

I’m not sure what’s supposed to go there

In the meantime, I went to bed last night at about 1030 and it was at 95% and I woke up this morning at 5:30 and it was at 88%. Two hours later after a few texts and checking my email and my workload for the day. Other than that sitting next to me with the screen off and I am at 74%.
 

JakeDHS07

Senior Member
Dec 15, 2010
1,178
945
35
North Salem NY
Google Pixel 7 Pro
Officially testing 💪. PixelFlasher made disabling verification and verity super easy and should make it simple to keep data and those with future updates. Fantastic! 🤘 Shout-out to both @Freak07 and @badabing2003 for their wonderful contributions. Cheers 🍻
 

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xiangyou

Member
Jul 17, 2018
17
2
Thanks a lot.
I am trying to build pixel 7 's kernel from source code.

I downloaded the source from the git in your post:
and I run type ./build_cloudripper.sh to build, but the build process never starts, and tell me can't find ./private/ something.

I also tried download the kernel source from source.android.com
repo init -u https://android.googlesource.com/kernel/manifest -b android-gs-pantah-5.10-android13-d1 ; repo sync -j16
here, I can run ./build_cloudripper.sh and build successfully.


My question is :
1, how can I build from your source ?
or,
2, if the images I build from google's source can flash as the images your provided in your post? the size is very different.



Thanks a lot!
 

Freak07

Recognized Developer / Recognized Contributor
Jan 2, 2011
6,441
23,039
Update 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
- patches to f2fs
- 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
 

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Last edited:

Lycidias

Senior Member
Update 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
- patches to f2fs
- 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
Nice! Will we see these improvements also on your series 6 kernel? :)
 
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i5lee8bit

Senior Member
Jul 18, 2006
500
1,138
escaped New Jersey 🙏🙌
youtube.com
Just wanted to mention, since I've seen it mentioned earlier in this thread, that latest release is working great on both cheetah and panther.

In particular, both phones are running AOSPMods 2.4.0... AND Dark Tricks 2.26 (I use only the battery estimate, hide user cert notification, and volume keys cursor control on the latter. Used to also use double tap lockscreen to sleep, until AOSPMods added that to 2.4.0). No reboots on either device. No guarantees, but at least with both our phones configurations, no problems at all.
 

Schroeder09

Senior Member
Nov 6, 2017
1,198
254
Google Pixel 7 Pro
I've been using this all day. Not much to report yet. I started with a fresh install after having to wipe my phone last night from a simple better battery stats install. I have no idea what went wrong. The phone would run in safe mode all day. As soon as I stared normal it would freeze and reboot after about 1 minute when everything booted up. I'm not good enough to dissect ADB logs to see what's going on.

I have this kernel, magisk v25 2, lsposed, aosp mods, xprivacy lua, Pixelfy lsposed module, substratum with flux overlay theming, and the cleanslate apps installed so I can use sweep to sleep. Will a BBS install conflict with any of these?
 
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schmeggy929

Recognized Themer
Apr 13, 2008
3,162
2,219
New Jersey
Google Pixel 7 Pro
I've been using this all day. Not much to report yet. I started with a fresh install after having to wipe my phone last night from a simple better battery stats install. I have no idea what went wrong. The phone would run in safe mode all day. As soon as I stared normal it would freeze and reboot after about 1 minute when everything booted up. I'm not good enough to dissect ADB logs to see what's going on.

I have this kernel, magisk v24. 2, lsposed, aosp mods, xprivacy lua, Pixelfy lsposed module, substratum with flux overlay theming, and the cleanslate apps installed so I can use sweep to sleep. Will a BBS install conflict with any of these?
Any particular reason why you are on Magisk 24.2? There has been a lot of bug fixes since then, as the current version 25.2
 

Schroeder09

Senior Member
Nov 6, 2017
1,198
254
Google Pixel 7 Pro
Any particular reason why you are on Magisk 24.2? There has been a lot of bug fixes since then, as the current version 25.2
Thanks. That was a typo. I'm on magisk 25.2. I've never heard of BBS doing this. It conflicted with something. It requested root but still didn't work. I had to issue the regular permissions via ADB. My suspicion is I fat-fingered something at that time. Based on my list of mods and setup, is there anything anyone sees as conflicting with BBS and the mods for this kernel and cleanslate features?
 

thefinger

Member
Jul 24, 2012
40
24
Realme C15
Google Pixel 8 Pro
I follow these steps

Flash new powerhint zip in MM
Reboot
Flash new kernel version in kKF
Reboot
This works for me. Not sure if this is correct or not😀
No uninstalling old powerhint module first?
I tried uninstalling the old module first and rebooting before installing the new one, and for a bit there magisk was complaining that it had lost root.
But after reinstalling the app it was all good again.
Had no issues installing the new kernel with Kernel Flasher though.
 

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  • 17
    Hey everyone,

    2.2.1 is fine to flash on April stable firmware! :)

    I wish everyone a good day!
    15
    Update to Raviantha 2.2.1

    Hey guys and girls,

    Here´s a kernel that fixes the crashes during booting that some seem to experience quite regularly while others not since the March update.

    It´s due to the timing and order of modules being loaded on this kernel vs the stock kernel. Thanks to @Sultanxda´s work we do no longer need to disable the vbmeta flags, because all drivers are built into the zImage and we don´t need to touch vendor_dlkm. This seems to slightly alter the timing/order of the boot process. The issue does not happen on stock, because that issue in the code is "masked" by the kernel being built in a modularized way on the stock kernel.
    However something in the March firmware changed the boot process and triggered this bug now regularly if the kernel is built as a single zImage with all drivers being built into that. Thanks to @Sultanxda for sharing the fix for this issue with me!

    I´ll keep this post and the changelog short because I don´t have much time.



    Since the powerhint module is now unified it makes sense to include it to the kernel.zip. This means there´s no separate zip to flash any longer. After flashing the kernel.zip you´ll see a module called AK3 Helper Module in Magisk Manager. Do not delete this module, it´s crucial for the device to boot/work!

    This means if you want to switch kernels, go back to stock kernel or dirty/flash a new firmware be sure to remove the AK3 Helper Module in Magisk Manager before restoring or flashing another kernel or firmware!
    I also adjusted the FAQ! You have been warned. ;)



    Important:


    Please note that this release is not for the QPR Beta firmware or dev preview, but the stable android 14 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!

    There are other small improvements as well. Please check my github for those.

    The kernel is made for stable A14 firmware, not beta.

    I wish everyone a nice day.


    Changelog:

    - Fix reboots during bootup that started happening since March update.



    Download:
    Attached to release post as AFH is currently down.

    Delete the old powerhint module in Magisk Manager before flashing the new one as the Module ID changes!



    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
    3
    Will this kernel work with custom roms? I'm currently on Matrixx and was curious about custom kernels as well
    First, always read the OP of a thread before asking any questions.

    From the OP

    - 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 )
    2
    Thanks as always freak. You're an amazing contributior to the community.

    Should we go ahead and use 2.2.1 for April or will you be releasing a new version when you have the time?
    Why would you not use the release he literally said was fine for April? And if he was to release a new one, why can't you install that on top of 2.2.1?
    2
    I know going from non-disabled to disabled requires a factory reset.

    Going from disabled to non-disabled doesn't trigger a factory reset?
    If you are talking about verity and verification, then no.

    By the way, disabling verity alone (when previously enabled) doesn't cause you to do a factory reset, but disabling verification (when previously enabled) does.
  • 92
    Kirisakura-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 A14 kernel sources from Google, Kernel is made for Android 14 Stable
    - Linux-Stable-Upstream included to 5.10.209
    - Compiled with prebuilt Google clang 18.0.0
    - EEVDF scheduler patches
    - lockless slab shrinker
    - Backport entire RCU subsystem to latest linux
    - 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 (current state disabled, as google remotely controls the prop)
    - 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://xdaforums.com/t/kernel-24-1...-pixel-7-pro-aka-pantah.4509795/post-87743627
    1.2.0 https://xdaforums.com/t/kernel-18-1...-pixel-7-pro-aka-pantah.4509795/post-87822161
    1.2.1 https://xdaforums.com/t/kernel-06-1...-pixel-7-pro-aka-pantah.4509795/post-87878321
    1.2.2 https://xdaforums.com/t/kernel-19-1...-pixel-7-pro-aka-pantah.4509795/post-87944505
    1.2.3 https://xdaforums.com/t/kernel-04-0...-pixel-7-pro-aka-pantah.4509795/post-87960183
    1.2.4 https://xdaforums.com/t/kernel-07-0...-pixel-7-pro-aka-pantah.4509795/post-88108123
    1.3.0 https://xdaforums.com/t/kernel-07-0...-pixel-7-pro-aka-pantah.4509795/post-88286027
    Raviantah_1.0.0 https://xdaforums.com/t/kernel-14-0...-pixel-7-pro-aka-pantah.4509795/post-88316285
    Raviantah_1.0.1 https://xdaforums.com/t/kernel-21-0...-pixel-7-pro-aka-pantah.4509795/post-88323527
    Raviantah_1.0.2 https://xdaforums.com/t/kernel-23-0...-pixel-7-pro-aka-pantah.4509795/post-88399915
    Raviantah_1.0.4 https://xdaforums.com/t/kernel-11-0...-pixel-7-pro-aka-pantah.4509795/post-88497279
    Raviantah_1.1.0 https://xdaforums.com/t/kernel-04-0...-pixel-7-pro-aka-pantah.4509795/post-88645103
    Raviantah_1.1.2 https://xdaforums.com/t/kernel-14-0...-pixel-7-pro-aka-pantah.4509795/post-88719667
    Raviantah_1.1.3 https://xdaforums.com/t/kernel-06-0...-pixel-7-pro-aka-pantah.4509795/post-88847285
    Raviantah_1.1.4 https://xdaforums.com/t/kernel-08-0...-pixel-7-pro-aka-pantah.4509795/post-88866285
    Raviantah_1.1.5 https://xdaforums.com/t/kernel-12-0...-pixel-7-pro-aka-pantah.4509795/post-89038079
    Raviantah_1.1.6 https://xdaforums.com/t/kernel-23-0...-pixel-7-pro-aka-pantah.4509795/post-89079103
    Raviantah_2.0.0 https://xdaforums.com/t/kernel-03-1...-pixel-7-pro-aka-pantah.4509795/post-89085294
    Raviantah_2.0.2 https://xdaforums.com/t/kernel-06-1...-pixel-7-pro-aka-pantah.4509795/post-89149195
    Raviantah_2.1.0 https://xdaforums.com/t/kernel-08-1...-pixel-7-pro-aka-pantah.4509795/post-89205141
    Raviantah_2.2.0 https://xdaforums.com/t/kernel-07-1...-pixel-7-pro-aka-pantah.4509795/post-89384467
    Raviantah_2.2.1 https://xdaforums.com/t/kernel-06-0...-pixel-7-pro-aka-pantah.4509795/post-89420910



    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 -> not required starting from Raviantah 2.0.0
    - 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, starting from raviantah 2.0.0 the module is unified ) no longer necessary since Raviantah 2.0.2
    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. No longer necessary since Raviantah 2.0.2
    Make sure to remove all previous installed powerhint modules before flashing Raviantah 2.0.2 and later
    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/freak07
    51
    Update 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:
    1675766626796.png


    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/freak07
    49
    Update 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/freak07
    43
    Update 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/freak07
    42
    Update to Raviantha 2.0.0

    Hey guys and girls,


    So here´s the next update. It´s for stable Android 14 and it´s a really big update. It contains a lot of the changes I worked on during the previous months and I finally feel they are ready to be pushed.
    I´m short on time so here´s a brief writeup on the changes introduced.

    EEVDF scheduler patches from latest linux are included. Have a read here. You can find more details here and also here. Alternatively use Google, there are a lot of resources. :)
    I tested this for a few months now. Since it´s merged to linux, it will be properly updated and tested for regressions in case there are any. That was what finally pushed me over the edge.
    The powerhint module was reworked. This results in less energy usage for various scenarious, scrolling in apps, watching videos, most games. (thereby also improves thermals within the boundaries of what's achievable on tensor/exynos ) This was achieved by "abusing" the PMU limiting feature from Google and expanding it with a switch that makes it work the opposite. The powerhint module was adjusted for all recent scheduler changes, such as EEVDF patches, scheduler updates from linux and the latest ones from 14 QPR Beta.
    Lockless slab shrinker was backported as well.
    There are a lot of other changes and patchsets for various subsystems, that should be mentioned as well, but I simply lack the time. For RCU, Maple tree, per-VMA locks etc etc.
    You can find them on the changelog and on my git if you´re interested.


    Thanks to @Sultanxda this kernel is now build in a monolithic fashion. That means all drivers are compiled into the zImage. This means no more modules and vendor_dlkm does not need to be modified any longer, which in return means users won´t have to disable the avb flags for veritiy/verification any longer to be able to boot the kernel.
    However there´s something I want to keep everyone in mind. If you currently run with the flags disabled you might want to keep them disabled just like you did over the last months while updating. There´s the slight chance that kernel changes introduced by google in the future, changes to partition layout or undiscovered bugs will screw the monolithic build up. I tested it as best as I could and didn´t find any issues, but that´s just an advice I want to put out.

    There are loads of other changes as well, but I don´t have enough time for a more detailed writeup.



    Please make sure to delete the old module powerhint from magisk manager before flashing the new one.


    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 14 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!

    There are other small improvements as well. Please check my github for those.

    The kernel is made for stable A14 firmware, not beta.

    I wish everyone a nice day.


    Changelog:

    - Update kernel to Android 14
    - Retain all previous features and updates
    - Bump prebuilt clang to 17.0.4
    - Linux-Stable 5.10.197
    - EEVDF scheduler patches from latest linux-kernel
    - kernel is build in a monolithic fashion, thanks to @Sultanxda
    - latest f2fs-stable patches
    - lockless shrinkers
    - loads of improvements from latest linux to mm subsystem
    - latest updates/fixes to maple tree
    - scheduler improvements from latest linux
    - scheduler improvements from QPR 14 beta
    - improvements/fixes to RCU subsystem
    - improvements to QoS from @Sultanxda
    - improved IRQ balancing, thanks to @Sultanxda
    - improvements to GPU driver performance from QPR beta
    - lockless slab shrinker
    - unify powerhint module for panther and cheetah (please delete the old powerhint module before flashing the new one)
    - rework powerhint module to account for all changes
    - rework powerhint module to reduce energy usage
    - more changes please look at my github





    Download:
    Attached to release post as AFH is currently down.

    Delete the old powerhint module in Magisk Manager before flashing the new one as the Module ID changes!



    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