DaisyForGaming 🎮

A performance-tuned custom kernel for the Xiaomi Mi A2 Lite (daisy) — built for gaming, one zip, no built-in root: patch it with FolkPatch or root it with Magisk after flashing.

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📱 Device

Device	Xiaomi Mi A2 Lite (daisy / daisy_sprout)
SoC	Snapdragon 625 (MSM8953, 8× Cortex-A53)
GPU	Adreno 506 (650 MHz)
Base tree	TogoFire r54 (Linux 4.9.337)
ROM	Android 11 (tested on Lineage-based ROM)

⬇️ Downloads (v1.0 — the final line)

Grab the zip from the repo root or the releases page:

Flashable zip	Root stack	Kernel build
DaisyForGaming-v1.0-Gaming-<date>.zip	FolkPatch (patch boot) or Magisk	vanilla — no in-kernel root, KernelSU removed

One kernel, one zip. The old KSU + Vanilla dual-release split is gone: KernelSU and SusFS have been pulled out of the kernel tree completely (driver, syscall hooks, configs), so the kernel is a clean vanilla shape that FolkPatch/KernelPatch can patch without any hook conflicts. Magisk keeps working as always — root is applied after flashing, never in-kernel.

🎮 Gaming & Performance Features

• True Hardware Bypass Charging (Free Fire & Free Fire Max): When Free Fire (com.dts.freefireth / com.dts.freefiremax) is active on screen (top-app) and the charger is plugged in, the kernel automatically enables true motherboard hardware bypass:

  • Charger connection remains continuously active (charging_enabled = 1) — no disconnect/reconnect loops or vibration chimes.
  • Battery charging is completely inhibited (battery_charging_enabled = 0, constant_charge_current_max = 0).
  • The phone runs 100% on AC adapter power: 0% battery charge, 0% battery drain, and zero battery heating while gaming!
  • When the game is closed or minimized, normal charging and balanced profile are instantly restored.

• Cool Charging & Thermal Protection (Zero Video Lag / No Throttling):

  • boost_on_charging = 0 (Default): Disables CPU boost during charging, keeping the CPU cool and eliminating thermal throttling.
  • Balanced Fast Charge (1500mA): Optimized safe current for Snapdragon 625 on micro-USB. Charges rapidly while keeping battery temperatures below 38°C–40°C, so Qualcomm's thermal-engine never throttles CPU or GPU.
  • Input Boost Duration (40 ms): Snappy 60fps touch responsiveness without wasteful battery drain or heat.

• GPU & Display Anti-Lag (Butter Smooth 60 FPS):

  • Adreno 506 GPU: Minimum clock locked at 216 MHz (governor: msm-adreno-tz). Eliminates micro-stutters during video playback (1080p/2K/4K) and surface compositing.
  • Adreno Idler: Disabled to prevent erratic frequency drops during gaming and video playback.
  • Schedutil Rate Limits: 500 µs (up) and 20,000 µs (down) for rock-solid frame pacing.
  • CPUSets & SchedTune: top-app and foreground assigned all 8 CPU cores with schedtune.boost = 10 and prefer_idle = 1. Background tasks are constrained to cores 0-3 to prevent CPU contention.

• Low-Latency Online Gaming Networking:

  • TCP BBR congestion control + FQ (Fair Queueing) packet pacing enabled by default for lower, jitter-free in-game ping.

• Autonomous Screen-Aware RAM & Junk Cleaner:

  • Screen-aware daemon: NEVER touches memory while the screen is ON.
  • When screen is turned off and locked, trims dead dentries/inodes, compacts RAM, and cleans temporary junk silently without causing UI micro-freezes.

• Storage & Memory:

  • zRAM lz4 (lowest CPU overhead) + balanced VM swappiness (60) and vfs_cache_pressure (100).
  • Storage I/O read-ahead: 1024 KB for instantaneous video streaming and app loading.
  • UKSM/KSM completely disabled to eliminate background CPU load and heating.

🔓 Root (FolkPatch / Magisk — never in-kernel)

• The kernel ships with no root inside: KALLSYMS + KALLSYMS_ALL = y, KASLR/KPTI off, MODVERSIONS on — all KernelPatch/FolkPatch requirements met, so KernelPatch can patch the flashed boot cleanly.
• FolkPatch flow: flash the zip → dump the new boot → patch it in FolkPatch Manager → flash the patched boot.
• Magisk flow: flash the zip, install/keep Magisk — the ramdisk is preserved untouched.

⚠️ KernelPatch on 4.9 must be ≥ 0.13.8 (FolkPatch V6 Sol = KP 0.13.9 ✅). Older kpimg builds hang the kernel in setup_arch at the boot logo — this is a documented upstream 4.9 bug fixed in 0.13.8.

💡 Safe test without flashing: adb reboot bootloader → fastboot boot patched_boot.img — boots once from RAM; force-restart returns to the bootloader.

🧩 Kernel modules

• CONFIG_MODULES=y with MODVERSIONS (VINTF requires it — keeps the Android-11 "system inconsistent" dialog away) and no signature enforcement (CONFIG_MODULE_SIG off): unsigned .ko modules load without any crypto check on the load path, and there are no KernelSU hooks left on the read/execve/input syscall paths.
• Modules must be built from this exact tree (MODVERSIONS symbols) — rebuild your .ko files for every kernel you flash; old modules from a previous build will refuse to load.
• Load them the normal way: insmod /path/xxx.ko or modprobe with the module in /vendor_dlkm//system/lib/modules. If a module misbehaves, rmmod it — the module loader itself adds no overhead beyond the module's own init.

📲 Flashing

Recovery (recommended)

1. Reboot to TWRP / OrangeFox (or adb reboot recovery).
2. Install the zip — or Advanced → ADB Sideload then adb sideload DaisyForGaming-v1.0-Gaming-*.zip.
3. Reboot. The zip auto-detects daisy, gates on Android 11, and stages the boot-time tuning script (99-dfg-tune.sh) into Magisk service.d.

Root setup

• FolkPatch → flash the zip first, then dump the new boot, patch it in FolkPatch Manager and flash the patched boot.
• Magisk → works as-is without patching.

🔧 Runtime tuning (all optional — defaults are already applied)

Node	Value
/sys/module/cpu_boost/parameters/boost_mode	3 (auto-detect) — 0 battery, 1 balanced, 2 gaming
/sys/module/cpu_boost/parameters/boost_mode_effective	read-only: profile auto applied now
/sys/module/cpu_boost/parameters/auto_gpu_busy	50 (% GPU busy counted as "game running")
/sys/module/cpu_boost/parameters/input_boost_freq	0:1036800 … 4:1401600
/sys/module/cpu_boost/parameters/input_boost_ms	150
/sys/module/cpu_boost/parameters/sched_boost_on_input	0
/sys/module/cpu_boost/parameters/boost_on_charging	0 (set 1 to boost while charging)
/sys/module/cpu_boost/parameters/bypass_on_gaming	1 — charging pauses while gaming on the charger
/sys/class/power_supply/battery/charging_enabled	read it: 0 = bypass active, 1 = normal charging
/sys/devices/system/cpu/cpu0/cpufreq/schedutil/up_rate_limit_us	5000
/sys/devices/system/cpu/cpu0/cpufreq/schedutil/down_rate_limit_us	20000
/dev/stune/top-app/schedtune.boost	10
/sys/module/sync/parameters/fsync_enabled	Y (toggle for faster loading)
/proc/sys/vm/{swappiness,vfs_cache_pressure,page-cluster,dirty_background_ratio}	30 / 50 / 0 / 5

Tuning log: /data/local/tmp/dfg_tune.log (written by 99-dfg-tune.sh every boot).

🛠️ Building

WSL (Ubuntu 22.04) + clang 14, LLVM=1 LLVM_IAS=1:

bash dfg_build.sh    # kernel -> out/arch/arm64/boot/Image.gz-dtb
bash dfg_zip.sh      # -> DaisyForGaming-v1.0-Gaming-<date>.zip

dfg_boot_rebuild.py swaps a boot image's kernel blob while keeping the header + ramdisk byte-identical (handy for kpatch testing).

🐞 Troubleshooting

Symptom	Cause / fix
KernelPatch-patched boot hangs at logo	kpimg < 0.13.8 — use FolkPatch V6 Sol (KP 0.13.9) or newer
Old .ko module refuses to load	MODVERSIONS symbols changed — rebuild the module from this tree
vm.swappiness permission denied	fixed (sysctl mode 0644)
Boot warning dialog on Android 11	keep MODVERSIONS on (it is enabled by default)
"zram swapon FAILED" in tune log	harmless ROM race (script retries and confirms swap state)

🙏 Credits

• TogoFire r54 — base kernel tree
• AnyKernel3 (osm0sis) — flashable packaging
• FolkPatch (LyraVoid) / KernelPatch (bmax121) — boot-patch root
• Everyone in the daisy community

📄 License & disclaimer

GPL-2.0 — see COPYING. Flash at your own risk; keep a backup of your boot image. A/B device: the zip writes to the active slot's boot partition.