Eureka releases & updates

Reference about EMS kernel: Energy Aware Scheduling (or EAS) gives the scheduler the ability to predict the impact of its decisions on the energy consumed by CPUs. EAS relies on an Energy Model (EM) of the CPUs to select an energy efficient CPU for each task. Allowing to save up battery even further. EMS is Exynos Mobile Scheduler, fork of EAS for exynos. And it was ported to our 4.4.y kernel. As written above, EMS kernel is good for battery saving. Some words from kernel official docs: - EAS operates only on heterogeneous CPU topologies (such as Arm big.LITTLE) because this is where the potential for saving energy through scheduling is the highest. - Using EAS with any other governor than schedutil is not supported. Attached picture is an example with EMS Kernel with pwrutilx gorvernor (idle drain 0.33% per hour) Reference about HMP kernel: It's just the stock scheduler that comes with stock kernel. Basically it's the normal kernel.

OFFICIAL FEATURES OF EUREKA R9.0 → Upstream Linux Kernel Version from 4.4.288 to 4.4.302 (latest and last update from Linux). → Implemented EurekaSound (ESOUND) v1.0, a basic headphone audio controller (For AOSP only). → Implemented Eureka Display Control (EKCAL) which is based on Samsung mDNIE driver (Not available for A20e). → Modified DT2W driver for A20 and A40 so as to fix DT2W issue on AOSP ROMs. → Fixed all remaining warnings in kernel source. → For permissive selinux, selinux can be switched to enforcing after boot. → Further improvements to SElinux code to fix some warnings in kernel log. → Fixed custom flashlight controller for A10. → Updated WireGuard VPN driver to latest version (1.0.20211208) → Merged 98 % audio and camera changes from R kernel source into Q/R/S (AOSP/OneUI2) kernels. → AROMA Installer is now used to facilitate the installation of Eureka Kernel. → OneUI and AOSP kernels & custom DTBs have been merged into 1 zip (kept size as small as possible). → Built with Vortex Clang & LTO which is based on the latest version of Clang 14 (20220201). → Two kernel versions with different schedulers are now available: → Implemented EMS (Exynos Mobile Scheduler) which is a scheduler based on EAS (Energy Aware Scheduling). → The normal kernel version has the stock HMP (Heterogeneous Multi-Processing) scheduler. → Eureka kernel R9.0 heavily depends on DTB (not DTBO) for the following features: → CPU and GPU overclock & underclock → SELinux state (enforcing or permissive) → Sound driver compatibility (AOSP, OneUI2 or OneUI3) → Energy model and parameters for EMS kernels → EMS kernel works best with schedutil based governors. The following governors were added: → Blu Schedutil → ElectroUtilX → PwrUtilX → Updated to latest A305F kernel source (A305FDDU6CUI3). → Time left for full charge is now shown on OneUI ROMs. → Updated all DTBOs to match latest changes from R source. → Possible fix for issue of glitched video renderings on social media apps (E.g: Instragram) - reported by our testers. → DTC (Device Tree Compiler) on kernel source has been upreved to 1.6.1, latest available → Updated spectrum files. → Other minor changes. → Skipped R8.5 xD

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The next kernel update will be released late because EKM app will also need to be updated. Since EKM app is maintained by Royna and he is busy, both will be delayed. I, Chatur will temporarily cut off from development so as to focus on my studies. So, kernel development will now be taken only by Gabriel and Royna.

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FEATURE PREVIEW LIST FOR EUREKA R8.5 → Upstream Linux Kernel from 4.4.288 to 4.4.301 → Implemented EurekaSound (ESOUND) v1.0, a basic headphone audio controller (mostly for AOSP). → Implemented Eureka Display Control (EKCAL) which is based on Samsung mDNIE driver (Not available for A20e). → Modified DT2W driver for A20 and A40 so as to fix issue with AOSP ROMs. → Fixed all remaining warnings in kernel source. → For permissive kernel, SElinux can be switched to enforcing after boot now. → Further improvements to SElinux code to fix some warnings in kernel log. → Fixed custom flashlight controller for A10. → Updated WireGuard VPN driver to latest version (1.0.20211208) → Merged 98 % audio and camera changes from R kernel source into Q/R/S kernels. [NOTE: EKCAL and ESOUND will only be available after EKM app is updated by Royna. Right now, the app is unstable for release] This feature list may be amended by us as required.

Announcing you Exynos7884 Channel & Group! - 7884/7885/7904 Users welcome! Channel: @Exynos7884Channel Group: @Exynos7884 Sheesh! :))

May 2022 be a better year - Happy new Year! 🎆🎇💥

End of year latest developments #betteraosplife