netdev - Re: [PATCH bpf-next v2 04/20] bpf: support bpf tracing/iter programs for BPF_LINK

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Date:   Tue, 5 May 2020 14:32:15 -0700
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     Yonghong Song <yhs@...com>
Cc:     Andrii Nakryiko <andriin@...com>, bpf <bpf@...r.kernel.org>,
        Martin KaFai Lau <kafai@...com>,
        Networking <netdev@...r.kernel.org>,
        Alexei Starovoitov <ast@...com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Kernel Team <kernel-team@...com>
Subject: Re: [PATCH bpf-next v2 04/20] bpf: support bpf tracing/iter programs
 for BPF_LINK_UPDATE

On Sun, May 3, 2020 at 11:26 PM Yonghong Song <yhs@...com> wrote:
>
> Added BPF_LINK_UPDATE support for tracing/iter programs.
> This way, a file based bpf iterator, which holds a reference
> to the link, can have its bpf program updated without
> creating new files.
>
> Signed-off-by: Yonghong Song <yhs@...com>
> ---

Nice and simple!

Acked-by: Andrii Nakryiko <andriin@...com>

>  kernel/bpf/bpf_iter.c | 31 +++++++++++++++++++++++++++++++
>  1 file changed, 31 insertions(+)
>

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