Re: [PATCH bpf-next v5 0/9] bpf libarena allocator improvements

[patchwork-bot+netdevbpf@kernel.org]

Hello:

This series was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <ast@kernel.org>:

On Tue, 10 Nov 2026 00:38:29 +0000 you wrote:
> The libarena buddy allocator's design has up until now prioritized
> ease of verification. With new verifier features like unlimited
> global stack frames and a large stack size we can now improve
> the allocator's performance and robustness.
> 
> This patch introduces per-CPU caches for the allocator. The overall
> caching design is inspired by tcmalloc. Each CPU has its own static
> object LIFOs, one for each allocator order. This speeds up allocation
> and freeing for BPF programs that have some degree of locality. The
> CPU caches are lockless. The caches are replenished from and spilled
> into "transfer caches", per-order caches shared between the CPUs that
> amortize the cost of spilling/refilling. Data from the transfer caches
> is in turn moved from and to the allocator.
> 
> [...]

Here is the summary with links:
  - [bpf-next,v5,1/9] selftests/bpf: libarena: Add bulk buddy allocation helpers
    https://git.kernel.org/bpf/bpf-next/c/d8276c0d08cc
  - [bpf-next,v5,2/9] selftests/bpf: Add a parallel buddy allocator benchmark
    https://git.kernel.org/bpf/bpf-next/c/4d71673bc4b5
  - [bpf-next,v5,3/9] selftests/bpf: libarena: Make spinlock trylock match arena_spin_unlock
    https://git.kernel.org/bpf/bpf-next/c/b77e7e9c49fd
  - [bpf-next,v5,4/9] selftests/bpf: libarena: Raise arena spinlock CPU limits
    https://git.kernel.org/bpf/bpf-next/c/27f2cf406a35
  - [bpf-next,v5,5/9] selftests/bpf: libarena: Add buddy per-CPU caches
    https://git.kernel.org/bpf/bpf-next/c/c8d21d25241b
  - [bpf-next,v5,6/9] selftests/bpf: libarena: Handle NMI reentrancy
    https://git.kernel.org/bpf/bpf-next/c/633635ab8d51
  - [bpf-next,v5,7/9] selftests/bpf: libarena: Refill local caches in batches
    https://git.kernel.org/bpf/bpf-next/c/e5728f923b03
  - [bpf-next,v5,8/9] selftests/bpf: libarena: Add a transfer cache
    https://git.kernel.org/bpf/bpf-next/c/be73f5c9f9d3
  - [bpf-next,v5,9/9] selftests/bpf: libarena: Cover buddy cache fast paths
    https://git.kernel.org/bpf/bpf-next/c/ed5558fb22a3

You are awesome, thank you!
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