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https://github.com/awakened1712/android_kernel_oneplus_sm8350_build/actions

Kernel Features

  • Built with GCC + Graphite + LTO + PGO
  • Built-in kernel modules for better optimization with LTO
  • Backport upstream Multi-gen LRU to optimize page reclaim and performance under memory pressure
  • Backport entire RCU subsystem to Linux 6.0
  • Lazy RCU which should result in power-savings while the device is lightly-loaded or idling
  • Backport EEVDF Scheduler (Earliest Eligible Virtual Deadline First) in favor of CFS
  • Disable unused touchscreen and keyboard drivers
  • Disable tracing, statistics and various debugs
  • Use power efficient workqueues
  • Relax kernel wakelocks
  • Backport upstream mremap
  • Allocate small objects on stack instead of heap to reduce overhead
  • Import latest version of Cortex strings' functions
  • Disable kernel hardening for faster syscall performance

Benchmarks

Callbench:

clock_gettime: ..........
    syscall:	87 ns
    libc:	33 ns

read file: ..........
    mmap:	7688 ns
    read:	4159 ns

* Eva:

clock_gettime: ..........
    syscall:	129 ns
    libc:	33 ns

read file: ..........
    mmap:	8593 ns
    read:	4369 ns

* BlueSpark:

clock_gettime: ..........
    syscall:	139 ns
    libc:	36 ns

read file: ..........
    mmap:	8876 ns
    read:	4571 ns