linux-kernel - Re: [PATCH bpf-next v2 5/8] selftests/bpf: Test cgroup

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Message-ID: <60365571-bcf0-d096-d023-c9a8bc9a40a7@fb.com>
Date:   Mon, 27 Jun 2022 23:11:13 -0700
From:   Yonghong Song <yhs@...com>
To:     Yosry Ahmed <yosryahmed@...gle.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>, Hao Luo <haoluo@...gle.com>,
        Tejun Heo <tj@...nel.org>, Zefan Li <lizefan.x@...edance.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Shuah Khan <shuah@...nel.org>, Michal Hocko <mhocko@...nel.org>
Cc:     Roman Gushchin <roman.gushchin@...ux.dev>,
        David Rientjes <rientjes@...gle.com>,
        Stanislav Fomichev <sdf@...gle.com>,
        Greg Thelen <gthelen@...gle.com>,
        Shakeel Butt <shakeelb@...gle.com>,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        bpf@...r.kernel.org, cgroups@...r.kernel.org
Subject: Re: [PATCH bpf-next v2 5/8] selftests/bpf: Test cgroup_iter.



On 6/10/22 12:44 PM, Yosry Ahmed wrote:
> From: Hao Luo <haoluo@...gle.com>
> 
> Add a selftest for cgroup_iter. The selftest creates a mini cgroup tree
> of the following structure:
> 
>      ROOT (working cgroup)
>       |
>     PARENT
>    /      \
> CHILD1  CHILD2
> 
> and tests the following scenarios:
> 
>   - invalid cgroup fd.
>   - pre-order walk over descendants from PARENT.
>   - post-order walk over descendants from PARENT.
>   - walk of ancestors from PARENT.
>   - early termination.
> 
> Signed-off-by: Hao Luo <haoluo@...gle.com>
> Signed-off-by: Yosry Ahmed <yosryahmed@...gle.com>

Acked-by: Yonghong Song <yhs@...com>