[PATCH 00/23] kbuild: significantly speed up kernel builds

[Florian Fainelli]

On 9/8/26 13:55, Lorenzo Stoakes (ARM) wrote:
> A typical kernel build consists of a frustratingly large amount of time
> spent stuck in single-threaded bottlenecks.
> 
> It turns out that there's a lot we can do about this and doing so
> significantly impacts kernel build times.
> 
> This series makes allmodconfig builds up to 36% faster, incremental builds
> up to ~70% faster, and noop builds up to ~90% faster.
> 
> Builds are faster across the board on every device I tested.
> 
> Machines used for perf testing:
> 
> * Threadripper -   x86, AMD Threadripper 9980X, 64 cores, 128 threads
> * EPYC         -   x86, 2 socket EPYC 9754, 256 cores, 512 threads
> * M2           - arm64, 2022 M2 macbook pro, 8 cores, 8 threads
>                          (4 perf, 4 efficiency)

My AMD EPYC 9454P server shows an improvement in the order of 13% using 
the arm64's defconfig and make -j97. Thanks for doing this!
-- 
Florian