linux-kernel - Re: [PATCH bpf] scripts: Exclude Rust CUs with pahole

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Message-ID: <CANiq72mUOOeHgN8wM4d2Kf_XEEVCZNSOa5qxt08crPYV1TCQ-w@mail.gmail.com>
Date:   Tue, 20 Dec 2022 21:56:59 +0100
From:   Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To:     Martin Rodriguez Reboredo <yakoyoku@...il.com>
Cc:     linux-kernel@...r.kernel.org, bpf@...r.kernel.org,
        rust-for-linux@...r.kernel.org,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>, Yonghong Song <yhs@...com>,
        Eric Curtin <ecurtin@...hat.com>, Neal Gompa <neal@...pa.dev>,
        Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: Re: [PATCH bpf] scripts: Exclude Rust CUs with pahole

On Tue, Dec 20, 2022 at 9:39 PM Martin Rodriguez Reboredo
<yakoyoku@...il.com> wrote:
>
> Version 1.24 of pahole has the capability to exclude compilation units
> (CUs) of specific languages. Rust, as of writing, is not currently
> supported by pahole and if it's used with a build that has BTF debugging
> enabled it results in malformed kernel and module binaries (see
> Rust-for-Linux/linux#735). So it's better for pahole to exclude Rust
> CUs until support for it arrives.

Cc'ing Arnaldo explicitly since he added `--lang_exclude` support for
this (thanks again!).

Cheers,
Miguel