linux-kernel - Re: [PATCH v2] libbpf: Deprecate bpf_objects

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Message-ID: <CAEf4BzYoNBZEqdNWYSTrviOs5_4d08ODxL6XSNNHOmqxDRu8Mw@mail.gmail.com>
Date:   Wed, 27 Oct 2021 11:01:49 -0700
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     Joe Burton <jevburton.kernel@...il.com>
Cc:     Andrii Nakryiko <andrii@...nel.org>, bpf <bpf@...r.kernel.org>,
        Networking <netdev@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        Joe Burton <jevburton@...gle.com>
Subject: Re: [PATCH v2] libbpf: Deprecate bpf_objects_list

On Tue, Oct 26, 2021 at 3:35 PM Joe Burton <jevburton.kernel@...il.com> wrote:
>
> From: Joe Burton <jevburton@...gle.com>
>
> Add a flag to `enum libbpf_strict_mode' to disable the global
> `bpf_objects_list', preventing race conditions when concurrent threads
> call bpf_object__open() or bpf_object__close().
>
> bpf_object__next() will return NULL if this option is set.
>
> Callers may achieve the same workflow by tracking bpf_objects in
> application code.
>
>   [0] Closes: https://github.com/libbpf/libbpf/issues/293
>
> Signed-off-by: Joe Burton <jevburton@...gle.com>
> ---

Applied to bpf-next, thanks. Please specify kernel tree next time
(i.e., [PATCH bpf-next] subject prefix)


>  tools/lib/bpf/libbpf.c        | 8 +++++++-
>  tools/lib/bpf/libbpf.h        | 3 ++-
>  tools/lib/bpf/libbpf_legacy.h | 6 ++++++
>  3 files changed, 15 insertions(+), 2 deletions(-)
>

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