linux-kernel - Re: [PATCH bpf-next v1 3/5] bpf: Introduce cgroup iter

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Message-ID: <YohwU2sXYbKvvcWS@slm.duckdns.org>
Date:   Fri, 20 May 2022 18:53:39 -1000
From:   Tejun Heo <tj@...nel.org>
To:     Hao Luo <haoluo@...gle.com>
Cc:     Yonghong Song <yhs@...com>, 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>,
        Zefan Li <lizefan.x@...edance.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Shuah Khan <shuah@...nel.org>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Michal Hocko <mhocko@...nel.org>,
        Stanislav Fomichev <sdf@...gle.com>,
        David Rientjes <rientjes@...gle.com>,
        Greg Thelen <gthelen@...gle.com>,
        Shakeel Butt <shakeelb@...gle.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Networking <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
        Cgroups <cgroups@...r.kernel.org>
Subject: Re: [PATCH bpf-next v1 3/5] bpf: Introduce cgroup iter

On Fri, May 20, 2022 at 07:43:12PM -0700, Hao Luo wrote:
> Yes, passing a cgroup_id as the seek() syscall parameter was what I meant.
> 
> Tejun previously requested us to support seek() for a proper iterator.
> Since Alexei has a nice solution that all of us have ack'ed, I am not
> sure whether we still want to add seek() for bpf_iter as Tejun asked.
> I guess not.

Yeah, I meant seeking with the ID but it's better to follow the same
convention as other iterators.

Thanks.

-- 
tejun