netdev - Re: [PATCH bpf-next v3 6/8] selftests/bpf: Add weak/typeless ksym test for light skeleton

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Date:   Fri, 15 Oct 2021 06:58:29 +0000
From:   Song Liu <songliubraving@...com>
To:     Kumar Kartikeya Dwivedi <memxor@...il.com>
CC:     bpf <bpf@...r.kernel.org>, Alexei Starovoitov <ast@...nel.org>,
        "Daniel Borkmann" <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        "Martin Lau" <kafai@...com>, Yonghong Song <yhs@...com>,
        Jesper Dangaard Brouer <brouer@...hat.com>,
        Toke Høiland-Jørgensen <toke@...hat.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH bpf-next v3 6/8] selftests/bpf: Add weak/typeless ksym
 test for light skeleton



> On Oct 14, 2021, at 1:56 PM, Kumar Kartikeya Dwivedi <memxor@...il.com> wrote:
> 
> Also, avoid using CO-RE features, as lskel doesn't support CO-RE, yet.
> Include both light and libbpf skeleton in same file to test both of them
> together.
> 
> In c48e51c8b07a ("bpf: selftests: Add selftests for module kfunc support"),
> I added support for generating both lskel and libbpf skel for a BPF
> object, however the name parameter for bpftool caused collisions when
> included in same file together. This meant that every test needed a
> separate file for a libbpf/light skeleton separation instead of
> subtests.
> 
> Change that by appending a "_light" suffix to the name for files listed
> in LSKELS_EXTRA, such that both light and libbpf skeleton can be used in
> the same file for subtests, leading to better code sharing.
> 
> While at it, improve the build output by saying GEN-LSKEL instead of
> GEN-SKEL for light skeleton generation recipe.
> 
> Signed-off-by: Kumar Kartikeya Dwivedi <memxor@...il.com>

Acked-by: Song Liu <songliubraving@...com>