[KERNEL][Snapdragon][4G/5G] PrimeKernel
- Thread starter pascua28
- Start date
"Changed timer tick to 100Hz for better throughput and power consumption"
are you sure the 120hz display won't need a higher tick rate?
are you sure the 120hz display won't need a higher tick rate?
Very good core, high energy efficiency and performance. Thank you
Last edited:
Can't seem the save the Coreclock settings. Always gets back to default but not to e.g. 1400MHz.
And yes I'm rooted with magisk 23.0.
They didnt release a new source drop yet
@pascua28
Thank you for the new test Kernel-G781B-01-26-2022.zip!
The overheating and not cycling down problems are gone.
But after flashing the kernel, I instantly noticed, that two specific shortcuts on my homescreen were missing.
One shortcut was a website shortcut to the IP 192.168.1.136 (my vacuum cleaner) and the second shortcut was a shortcut to "apps and devices" inside the Google Play app.
This shortcut saved me two clicks to update my apps inside Google Play.
I'm not able to reproduce the Google App shortcut.
Now I have to open Google Play, click on my usericon in the upper right corner, click on apps and devices to update my apps again.
I remember longclicking on the Google Play app gave me the shortcut option, but it's not there anymore.
Edit:
Maybe this is not kernel related? But this happend right after flashing the kernel.
Thank you for the new test Kernel-G781B-01-26-2022.zip!
The overheating and not cycling down problems are gone.
But after flashing the kernel, I instantly noticed, that two specific shortcuts on my homescreen were missing.
One shortcut was a website shortcut to the IP 192.168.1.136 (my vacuum cleaner) and the second shortcut was a shortcut to "apps and devices" inside the Google Play app.
This shortcut saved me two clicks to update my apps inside Google Play.
I'm not able to reproduce the Google App shortcut.
Now I have to open Google Play, click on my usericon in the upper right corner, click on apps and devices to update my apps again.
I remember longclicking on the Google Play app gave me the shortcut option, but it's not there anymore.
Edit:
Maybe this is not kernel related? But this happend right after flashing the kernel.
Last edited:
Not sure if this is the right thread.
Had a kernel build device-tree question.
I added a hid-over-i2c device to the dts/dtbo for z3q.
Since it doesn't need a driver, i2c-hid takes care of it, what else do I need to put into the build?
Ive enabled CONFIG_I2C_HID=y.
I was thinking the compatible field would cause the driver to initialize it, but it's not talking to the i2c bus. |
[email protected] {
status = "ok";
compatible = "hid-over-i2c";
reg = <0x2a>;
interrupt-parent = <0xffffffff>;
interrupts = <0xf 0x0>;
hid-descr-addr = <0x0014>;
support_dex_mode;
pinctrl-names = "default", "on_state", "off_state";
pinctrl-0 = <0x96>;
pinctrl-1 = <0x96>;
pinctrl-2 = <0x96>;
};
I can see the above definition in /proc/device-tree, so I know it's been loaded.
Had a kernel build device-tree question.
I added a hid-over-i2c device to the dts/dtbo for z3q.
Since it doesn't need a driver, i2c-hid takes care of it, what else do I need to put into the build?
Ive enabled CONFIG_I2C_HID=y.
I was thinking the compatible field would cause the driver to initialize it, but it's not talking to the i2c bus. |
[email protected] {
status = "ok";
compatible = "hid-over-i2c";
reg = <0x2a>;
interrupt-parent = <0xffffffff>;
interrupts = <0xf 0x0>;
hid-descr-addr = <0x0014>;
support_dex_mode;
pinctrl-names = "default", "on_state", "off_state";
pinctrl-0 = <0x96>;
pinctrl-1 = <0x96>;
pinctrl-2 = <0x96>;
};
I can see the above definition in /proc/device-tree, so I know it's been loaded.
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10Details:
Code:#include <std_disclaimer.h> /* * Your warranty is now void. * * I am not responsible for bricked devices, dead SD cards, * thermonuclear war, or you getting fired because the alarm app failed. Please * do some research if you have any concerns about features included in this ROM/Kernel * before flashing it! YOU are choosing to make these modifications, and if * you point the finger at me for messing up your device, I will laugh at you. */
- Based on latest Samsung open source drop
- Compiled with
the Clang 12 + full LTOGCC 12.2
- Assuming you have a custom recovery installed, simply download and flash the kernel zip. This kernel uses Anykernel 3 so no need to reflash magisk(if you use magisk) after installing it.
Kernel source code:
Did you like my work? Any support is much appreciated!
Patreon
Buy me a coffee!
Other ways to support me
Downloads:
10Changelog:
v6.1 (December 31, 2022)
- Fixed missed memory management code warnings due to recent changes in v6.0
- Fixed coding warnings for better code quality
- Enabled zero initialization for stack variables for better security and stability
- Compiled with latest GCC 12.2.1
v6.0 (December 26, 2022)
- Reverted more of CAF's memory management changes
- Disabled memcg to allow lmkd to use the more efficient PSI (pressure stall information)
- Disabled per-cgroup pressure tracking to reduce overhead
- Disabled lots of debugging from the wlan driver
- Disabled lots of logging spam
- Disabled hardened usercopy to reduce memory overhead
- Fixed incorrectly affined cpus for kgsl. This bug has been present since PrimeKernel v2.0 due to a coding mistake
- Updated source base to latest Android 13 kernel source (G781BXXU4GVK6)
v5.2 (December 4, 2022)
- Speed up pm_qos
- Imported some optimized libs
- Killed lots of logging
- Reverted CAF's messed up memory management changes
- Disabled process reclaim
- Fixed memory safety issues for various MSM drivers for better stability and security
- Disabled lots of debugging and logging from qcacld driver (this resulted in several hundred kilobytes shaved off from the kernel binary size)
v5.1-beta (November 16, 2022)
- Rewrote ashmem for clarity and performance
- Imported several optimized libraries
- Converted cpumasks to atomic to reduce expensive operations
- Selectively applied compiler optimizations to some parts of the kernel
- Use kmem_cache for some drivers to reduce (de)-/allocation
- Disabled some security suits
- Disabled SCHED_DEBUG
- Re-added MGLRU
- Compiled with GCC 12.2 with LTO enabled
Note:
If you want to squeeze a bit more performance, just rename this zip file and add-perf.
Perf variant has fewer CPU frequencies for better performance
v5.0 (November 11, 2022)
- More stability fixes
- Lots of under-the-hood optimizations
- Fixed Google Play System update not working
- Fixed some random reboots
- Added 150MHz GPU freq
- Overall code quality fixes
- Compiled with latest GCC 12.2
v4.1 (October 21, 2022)
- More stability fixes
- Optimizations on GPU and iommu drivers
- Compiled with Clang 12 ThinLTO
v4.0 (October 6, 2022)
- Based on G781BXXS4FVF3
- Compiled with clang full LTO for better performance
- Compiled with O3
- Added MGLRU for better memory management and performance
- Code quality fixes for better stability
- Added optimized libraries for better performance
- Added kcal color control
- Removed additional logging and debugging
v3.1 (June 7, 2022)
- Based on G781BXXS4FVD9
- Reverted Linux upstream since I can't thoroughly test this kernel and for better stability
- Compiled with latest clang from clearlinux (Clang 13)
- Removed dynamic allocation from several subsystems to speed them up
- Removed more logging and debugging from several drivers on their hot code paths
- Micro-optimizations for scheduler and workqueues
- Sped-up pm qos by using atomic operations
- Tweaked cpusets for better battery life and thermals
- Improved audio driver a bit
- Affined GPU and display IRQs to big cluster for better performance
- Used optimized energy model and cpu frequencies
- Undervolted GPU a bit
- Code quality fixes for better overall stability
- Compiled with O3 optimization
- More under-the-hood optimizations
v2.0 (December 16, 2021)
- Upstreamed to Linux 4.19.219
- Converted some subsystems to use power efficient workqueues
- Removed logging from various drivers
- Removed F2FS additional tracings
v2.0-rc1 (December 1, 2021)
- Display driver optimizations
- Used BBR as default TCP congestion algorithm
- Enabled BPF_JIT to improve network performance
- Implemented optimized spinning loop
- Updated to G780GXXU3AUI3 source drop
- Speed up mremap
- Removed msm_performance CPU boosting
- Implemented optimized PM QoS for UFS
- Changed zRAM compression algorithm to lz4
- Disabled EAS_PREFER_IDLE for better power efficiency
v1.0 (Nov. 8, 2021)
- Based on Samsung G780GXXU3AUH5 source drop
- Disabled knox and Samsung security stuffs
- Changed timer tick to 100Hz for better throughput and power consumption
- Optimized GPU wakeup
- Removed use of dynamic allocation from several subsystems
- Disabled binder debugging
- Optimized UFS irq handling
- Updated lz4 compression used by zswap
- Disabled input booster
