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Date:   Tue, 26 May 2020 10:42:51 -0700
From:   Andrii Nakryiko <>
To:     Eelco Chaudron <>
Cc:     bpf <>, "David S. Miller" <>,
        Networking <>,
        Alexei Starovoitov <>,
        Daniel Borkmann <>,
        Martin Lau <>, Song Liu <>,
        Yonghong Song <>, Andrii Nakryiko <>,
        Toke Høiland-Jørgensen <>
Subject: Re: [PATCH bpf-next v2] libbpf: add API to consume the perf ring
 buffer content

On Tue, May 26, 2020 at 2:22 AM Eelco Chaudron <> wrote:
> This new API, perf_buffer__consume, can be used as follows:
> - When you have a perf ring where wakeup_events is higher than 1,
>   and you have remaining data in the rings you would like to pull
>   out on exit (or maybe based on a timeout).
> - For low latency cases where you burn a CPU that constantly polls
>   the queues.
> Signed-off-by: Eelco Chaudron <>
> ---

Looks good, thanks. I'd really appreciate if you could follow up with
a fix to perf_buffer__free() as well. If not, I will get to it
eventually anyway :)

Acked-by: Andrii Nakryiko <>


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