linux-kernel - Re: [PATCH bpf-next v2] bpf: Cache the last valid build

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Date:   Mon, 28 Feb 2022 17:20:09 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Hao Luo <haoluo@...gle.com>
Cc:     ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        songliubraving@...com, namhyung@...nel.org, blakejones@...gle.com,
        bpf@...r.kernel.org, linux-kernel@...r.kernel.org,
        gthelen@...gle.com
Subject: Re: [PATCH bpf-next v2] bpf: Cache the last valid build_id.

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Daniel Borkmann <daniel@...earbox.net>:

On Wed, 23 Feb 2022 16:05:31 -0800 you wrote:
> For binaries that are statically linked, consecutive stack frames are
> likely to be in the same VMA and therefore have the same build id.
> As an optimization for this case, we can cache the previous frame's
> VMA, if the new frame has the same VMA as the previous one, reuse the
> previous one's build id. We are holding the MM locks as reader across
> the entire loop, so we don't need to worry about VMA going away.
> 
> [...]

Here is the summary with links:
  - [bpf-next,v2] bpf: Cache the last valid build_id.
    https://git.kernel.org/bpf/bpf-next/c/ceac059ed4fd

You are awesome, thank you!
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