netdev - Re: [PATCH v3 bpf-next 2/4] libbpf: support libbpf-provided extern variables

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Date:   Fri, 13 Dec 2019 17:20:55 -0800
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     Alexei Starovoitov <ast@...com>
Cc:     Andrii Nakryiko <andriin@...com>,
        "bpf@...r.kernel.org" <bpf@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "daniel@...earbox.net" <daniel@...earbox.net>,
        Kernel Team <Kernel-team@...com>
Subject: Re: [PATCH v3 bpf-next 2/4] libbpf: support libbpf-provided extern variables

On Fri, Dec 13, 2019 at 4:20 PM Alexei Starovoitov <ast@...com> wrote:
>
> On 12/13/19 3:51 PM, Andrii Nakryiko wrote:
> >   static int
> >   bpf_object__init_internal_map(struct bpf_object *obj, enum libbpf_map_type type,
> > -                           int sec_idx, Elf_Data *data)
> > +                           int sec_idx, void *data, size_t data_sz)
>
> the previous patch set did:
>   bpf_object__init_internal_map(struct bpf_object *obj, enum
> libbpf_map_type type,
> -                             int sec_idx, Elf_Data *data, void **data_buff)
> +                             int sec_idx, Elf_Data *data)
>
> and now this patch set refactors it again from Elf_Data into
> two individual arguments.
> Could you do this right away in the previous set and avoid this churn?

no problem, will do

> Not a strong opinion though.
> Just odd to see the function being changed back to back.
> Thankfully that's internal in .c file.