Re: Re: [PATCH 1/2] bpf: support access variable length array of integer type

在 2023/4/18 08:08, Alexei Starovoitov 写道:

On Mon, Apr 17, 2023 at 04:07:48PM +0800, Feng zhou wrote:

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From: Feng Zhou zhoufeng.zf@bytedance.com

After this commit: bpf: Support variable length array in tracing programs (9c5f8a1008a1) Trace programs can access variable length array, but for structure type. This patch adds support for integer type.

Example: Hook load_balance struct sched_domain { ... unsigned long span[]; }

The access: sd->span[0].

The use case makes sense. Please add it as a selftest. Either combine it with patch 2 or another patch 3. and then resubmit. Make sure to use [PATCH bpf-next] subject, so BPF CI knows how to test it.

Will do, thanks.