=========27/08/2026==========
### Device

# Battery & Power

* Improved BatteryStatus, increasing battery drain precision and enhancing the battery notification.
* Adjusted `BatteryNotificationService` startup during boot and cleaned up its initialization handling.
* Adjusted the default ZRAM swappiness and compression algorithm.
* Removed Lineage Health, simplifying battery and charging-control resource management.
* Added the required permissions and sepolicy for the `cpu_dma_latency` hint.
* Reduced the `mlock()` limit to 64 KB to reduce unnecessary locked memory usage.

# Thermal

* Adapted the thermal system for Android 17.
* Updated the thermal settings layout.
* Adjusted the CPU temperature sensor path in the overlay.

# Display & SurfaceFlinger

* Adjusted display density.
* Reduced the blur radius to lower the visual and processing cost of blur effects.
* Enabled background blur support in SurfaceFlinger.
* Disabled backpressure propagation in SurfaceFlinger.
* Offloaded WM Shell to another thread to improve UI operation processing.
* Disabled unused global mode, CDMA, and `world_mode` options.
* Fixed the backlight configuration by removing the nonexistent `panel1-backlight` reference.

# Camera & Media

* Enabled CameraX extensions support.
* Updated camera blob dependencies to use `libui-v34`.
* Fixed dependencies of some blobs to use `libtinyxml2_1.so`.
* Disabled the `thumbnail_block_model` in Stagefright.
* Adjusted audio configuration to skip the channel mask field in the speaker layout.
* Added the SoundDose implementation.

# Audio

* Added the SoundDose implementation.
* Adjusted speaker channel layout handling.
* Updated audio-related configurations and Soong dependencies.

# ART / Dalvik

* Tuned Dalvik heap profiles according to the available RAM.
* Updated the path used for the `dex2oat` boot image.
* Disabled `dex2oat` debugging.
* Set ART to release mode.
* Enabled Android Go configurations to optimize resource usage.

# Memory Management

* Dropped LMKD and MGLRU in favor of the kernel-based memory management implementation.
* Adjusted the ZRAM configuration for better device-specific behavior.
* Reduced the memory locking limit used by init.
* Applied various optimizations and cleanups to reduce memory and resource usage.

# Init / Rootdir

* Cleaned up and reorganized the Qualcomm platform `init` scripts.
* Removed `vendor_modprobe`.
* Optimized userdata F2FS mount options.
* Switched HwComposer to the foreground CPU set.
* Removed references to nonexistent or unused hardware.
* Enabled LZ4 compression for ramdisks.

# Properties & Overlays

* Reorganized and simplified property files.
* Cleaned up obsolete and unnecessary properties.
* Restored the `ro.vendor.extension_library` definition.
* Added `hardware.sku` identification support.
* Reorganized overlays, renamed them to `rro_overlays`, and rebranded them for Stone.
* Adjusted display, CPU temperature, blur, and network mode overlays.
* Disabled `world_mode_enabled_bool` and unused network/CDMA options.

# SELinux & VINTF

* Fixed minor service and sysfs SELinux denials.
* Added the required Bluetooth seapp contexts.
* Removed unused SELinux labels and properties.
* Included LineageOS libperfmgr sepolicy.
* Replaced `vendor_sysfs_usb_c` with `sysfs_typec`.
* Updated the FCM to use the Xiaomi implementation.
* Updated the manifest target level to 7 and unset the kernel target level.
* Disabled kernel VINTF requirement enforcement during OTAs.

# Performance & Build

* Updated the kernel compiler to **Clang r563880c**.
* Updated power-libperfmgr Soong namespaces and configuration.
* Updated Soong configuration variables to use boolean types where appropriate.
* Added the legacy libion implementation and the required Soong configuration.
* Updated the configuration to use the current libion implementation location.
* Overrode the kernel BPF version exposed to userspace.
* Updated the build to use the Xiaomi FCM.
* Updated configurations for M3E support.

# Doze / Parts

* Migrated `DozeSettingsFragment` to AndroidX APIs.
* Reworked BatteryStatus to start automatically during boot.
* Adjusted the thermal settings layout.
* Applied the Expressive theme to device settings.
* Adapted Parts components for Android 17 and M3E support.

# Vibrator

* Removed the waveform ramp-down duration override, allowing the framework/vendor default behavior to be used.

# GPS / Location

* Removed the deprecated `volatile` usage from `loc_read_process_conf()`.

### Kernel Changelog

# Power, Charging & Thermal

* Fixed BQ25890 charger state transitions during USB-PD charging.
* Reworked thermal charging logic and fixed potential issues with CPU thermal limit handling.
* Optimized the thermal/cpu cooling driver to reduce overhead when identifying CPU clusters.
* Adjusted panic reset handling to preserve kmsg and the reboot reason.
* Optimized idle and suspend states, including timer, notifier, and low-power state handling.
* Removed unnecessary DRM panel notifier dependencies and optimized `sleep_disabled` handling.

# CPUFreq & Scheduler

* Optimized `schedutil`, including the default rate limit, optional iowait boost, and support for dropping frequency on individual CPUs without idling.
* Applied Android scheduler tweaks and optimized the generic idle loop.
* Optimized IRQ affinity management and added more efficient cpumask helpers.
* Adjusted CPU feature handling for heterogeneous architectures and relaxed feature sanity checking where appropriate.
* Optimized the kernel for Snapdragon 695 with device-specific compiler flags and performance tuning.
* Tuned UCLAMP and general scheduler behavior for performance.

# Memory & Low Memory Killer

* Integrated and optimized Simple Low Memory Killer, improving victim management, reclaim, priorities, timeouts, and swap handling.
* Optimized `vmpressure` and reclaim behavior to improve response to memory pressure.
* Reduced memory overhead by disabling kmem/socket accounting and unnecessary debugging/profiling features.
* Added support for memory reclaim through `memory.reclaim`.
* Optimized several small allocations by replacing dynamic allocations with stack buffers or cached structures.
* Optimized memory shrinkers and locks to reduce contention.
* Adjusted pageblock sizing to reduce scheduling delays.
* Added ZRAM memory tracking and writeback support.
* Optimized per-CPU ZRAM stream management.

# ZRAM, Compression & Storage

* Updated the Zstandard implementation to newer upstream releases, reaching the 1.5.7 series.
* Added F2FS optimizations to reduce allocations, congestion, and garbage collection overhead.
* Configured F2FS GC to run with lower scheduler and I/O priority.
* Enabled storage optimizations and RELR relocation packing.
* Enabled block security and I/O throttling features.
* Set `noatime` as the default filesystem mount behavior.

# GPU & Display

* Tuned Moonstone GPU busy behavior by reducing the busy penalty and improving frequency responsiveness.
* Raised GPU DDR bus frequency floors.
* Optimized KGSL with lockless page pools, improved shrinker handling, better fence handling, and reduced tracing overhead.
* Optimized display and IRQ hot paths by removing redundant operations and unnecessary buffer copies.
* Removed unnecessary PM QoS requests from the display subsystem.
* Disabled unused graphics debugging and monitoring components.

# Media, Camera & Audio

* Fixed Venus 10-bit bit-depth change handling, correctly selecting TP10/UWC and DPB formats when the firmware detects a bit-depth change.
* Updated camera-kernel to the latest CLO LAHAINA code.
* Removed the unnecessary `camera_debug_util` implementation.
* Imported Xiaomi changes to the GPU, MMC, video, and misc drivers.
* Optimized ASoC with power-efficient workqueues and removed unnecessary PM QoS usage.
* Fixed FM recording mixer setup and simplified static array handling.

# Touchscreen & I/O

* Improved the FocalTech touchscreen driver with IRQ priority boosting, AVDD GPIO support, and missing ESD/PRC definitions.
* Reduced I2C GENI error log spam.
* Optimized MSM pinctrl operations while retaining the required barriers to guarantee correct I/O write ordering.

# Power Management & Idle

* Optimized `cpuidle`/LPM to avoid unnecessary work when the system is restricted to WFI.
* Deep idle states are now managed according to the screen state.
* Tuned LPM timers and exit latencies to avoid unnecessary operations.
* Enabled `NO_HZ_IDLE` to reduce scheduler ticks and wakeups during idle, standby, and screen-off states.
* Enabled power-efficient workqueues by default.
* Removed unnecessary LPM dependencies and debug event logging.

# Kernel Configuration & Hardening

* Cleaned up `stone_defconfig`, disabling unused features, debugging, tracing, profiling, loadable modules, and unnecessary GKI components.
* Enabled useful features such as 64-bit SCM, block security, I/O throttling, compaction, fair group scheduling, and writeback throttling.
* Configured binderfs to use `0755` as its default mount mode.
* Enabled checkpoint/restore support.
* Disabled low-value features and statistics to reduce memory usage and overhead.
* Enabled ARM64 LSE atomics and dead code elimination optimizations.
* Tuned security, watchdog, softlock detector, and scheduler statistics according to device requirements.

# Network

* Configured FQ as the default network scheduler.
* Configured BBR as the default TCP congestion control algorithm.
* Increased the maximum TUN MTU to `65536`.
* Adjusted congestion control configuration to retain BBR support.

# Kernel Base & Compatibility

* Updated the kernel to **Linux 5.4.303 LTS**, incorporating upstream security, stability, and bug fixes.
* Updated 5.4.y kernel metadata.
* Applied crypto/AF_ALG fixes covering size validation, concurrency, IV handling, and scatterlist operations.
* Added optimizations and fixes to ashmem, binder, kernfs, exec, and other subsystems.
* Added Fake Uname compatibility improvements, including Android 5.10 support and optimized process matching.
* Added `shmem_set_file` to ashmem.
* Adjusted `struct file` alignment.
* Disabled io_uring and other unused device features.

# IRQ, Locking & Performance

* Fixed IRQ affinity handling to prevent unsupported multi-CPU affinity masks.
* Added warnings for overwritten IRQ affinity notifiers.
* Optimized locks, rtmutex, and synchronization paths.
* Removed redundant memory barriers and unnecessary `noinline` usage.
* Optimized hot paths in display, DMA-BUF, binder, and filesystem code.
* Reduced debugging and tracing overhead across critical subsystems.

# Xiaomi / Device Specific

* Integrated various Xiaomi-specific changes across platform drivers.
* Recalculated the Energy Model for Holi and Blair platforms.
* Disabled unused monitoring/coresight components and power supply drivers.
* Added Snapdragon 695 and Stone/Moonstone-specific optimizations.
* Updated thermal behavior with the integration of Xiaomi's rewritten thermal implementation.

# Filesystem & Security

* Optimized F2FS, fscrypt, and kernfs operations to reduce dynamic memory allocations.
* Removed additional Android/CAF filesystem tracing.
* Hid `/system/addon.d` from user applications.
* Enabled DM-Verity with `DM_VERITY_OPT_AT_MOST_ONCE`.
* Added block security and I/O management features.


=========23/11/2025===========

* Enable recovery ramdisk in vendor boot
* Bump BOARD_BOOT_HEADER_VERSION to 4
* Offload WM shell to another thread
* Enable LZ4 compression for ramdisks
* sepolicy: remove commonized ST NFC label
* Move recovery resources to vendo_boot"
* set correct API shipping level
* properties: remove hwui properties
* properties: enable hwc_vds
* properties: clean up bringup props
* Update blobs to OS2.0.5.0.UMQMIXM
* Parts: Rework ZRAM implementing dynamic size options based on device RAM
* rootdir: cleanup post boot script
* set TARGET_PREBUILT_LAWNCHAIR_LAUNCHER := true
* Stop using Pixel Launcher as default
* Compile HWUI for performance
* Enable the appropriate dynamic VRR refresh rate (60 ↔ 120Hz)
* Enable full ART optimizations with VDEX/ODEX
* Enable ScrollOptimizer

=========07/11/2025===========
* parts: add core control
* parts: add minimal CPU Manager
* parts: add minimal GPU Manager
* Parts: Add StoneParts
* Parts: Moved resources to StoneParts and made minor adjustments.
* Parts: Added battery status with notifications.
* Kernel: Upstrem to 5.4.300
* Other small improvements under the hood
* Synchronized source changes.

=========24/09/2025===========
* Fixed charging info on lock screen .
* Synchronized source changes.

=========15/09/2025===========
* Use ADPF to improve the experience during heavy animations.
* Optimized network services to save battery life on 5G.
* New hybrid task profile, for better performance and energy efficiency balance.
* Optimized power hints to improve battery efficiency.
* Fixed WFD.
* Synchronized source changes.
* September Security Patch.

=========20/08/2025===========
* Fixed audio noise.
* Improved memory management.
* Returned the standard QS from Android 16.
* Synchronized source changes.
* August Security Patch.

=========16/07/2025===========
* Synced with latest Source Changes.
* Some bugs fixed.
* July security patches.

=========10/07/2025===========
* Initial A16 release

=========30/06/2025===========
**FINAL BUILD FOR ANDROID 15.

* Updated Thermal Profiles.
* Volume Adjustments.
* Color Issues Fixed.
* Qs Lag Fixed
* Removed PixelLauncher

=========18/06/2025===========
* Added Dolby
* Kernel - Fixes clock lock
* Kernel - Optimizes file overwriting in ext4
* Kernel - Improves CPU selection for low-usage tasks

=========15/06/2025===========
* Optimize native executables for Cortex-A76 CPU.
* Enhance audio quality.
* Animator duration adjustments.
* AOD glare reduction.
* Fixed minor visual issues.

=========02/06/2025===========
* Include Pixel Launcher (Gapps and core)
* Parameter adjustment for better performance and responsiveness
* Allowed system apps to access zram nodes
* Set 60Hz max refresh rate on AOD & Ambient Display
* Added ViPER4AndroidFX
* Animation improvements
* Fixed issues with HDR
* Other small improvements under the hood

=========13/05/2025===========
* Initial official release for stone