Re: [PATCH bpf-next v2 1/6] resolve_btfids: Deduplicate BTF after btf2btf transformations

On Wed, 2026-08-05 at 16:06 -0700, Ihor Solodrai wrote:
> btf2btf() adds new types to the BTF: the KF_IMPLICIT_ARGS transform
> synthesizes an _impl FUNC together with its FUNC_PROTO and copies of the
> kfunc's decl tags. Nothing deduplicates them afterwards. pahole runs
> btf__dedup() on its own output, but that happens before resolve_btfids
> sees the BTF, so any type the tool itself creates is emitted as-is, even
> when a structurally identical type is already present.
> 
> Call btf__dedup() at the start of finalize_btf(), so that base
> distillation and the by-name sort both operate on the canonical set of
> types.
> 
> Signed-off-by: Ihor Solodrai <[email protected]>
> ---

Hi Ihor,

I'm curious if you had a chance to measure how this affects the
resolve_btfids running time?