From: Tejun Heo <tj@kernel.org>
To: David Vernet <void@manifault.com>
Cc: bpf@vger.kernel.org, ast@kernel.org, andrii@kernel.org,
daniel@iogearbox.net, martin.lau@linux.dev, yhs@fb.com,
song@kernel.org, sdf@google.com, john.fastabend@gmail.com,
kpsingh@kernel.org, jolsa@kernel.org, haoluo@google.com,
kernel-team@fb.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH bpf-next 0/4] Support storing struct cgroup * objects as kptrs
Date: Tue, 22 Nov 2022 12:44:12 -1000 [thread overview]
Message-ID: <Y31QvDkccnIosZCP@slm.duckdns.org> (raw)
In-Reply-To: <20221122055458.173143-1-void@manifault.com>
On Mon, Nov 21, 2022 at 11:54:54PM -0600, David Vernet wrote:
> In [0], we added support for storing struct task_struct * objects as
> kptrs. This patch set extends this effort to also include storing struct
> cgroup * object as kptrs.
>
> As with tasks, there are many possible use cases for storing cgroups in
> maps. During tracing, for example, it could be useful to query cgroup
> statistics such as PSI averages, or tracking which tasks are migrating
> to and from the cgroup.
>
> [0]: https://lore.kernel.org/all/20221120051004.3605026-1-void@manifault.com/
>
> David Vernet (4):
> bpf: Enable cgroups to be used as kptrs
> selftests/bpf: Add cgroup kfunc / kptr selftests
> bpf: Add bpf_cgroup_ancestor() kfunc
> selftests/bpf: Add selftests for bpf_cgroup_ancestor() kfunc
From cgroup POV:
Acked-by: Tejun Heo <tj@kernel.org>
Thanks.
--
tejun
next prev parent reply other threads:[~2022-11-22 22:44 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-22 5:54 [PATCH bpf-next 0/4] Support storing struct cgroup * objects as kptrs David Vernet
2022-11-22 5:54 ` [PATCH bpf-next 1/4] bpf: Enable cgroups to be used " David Vernet
2022-11-22 5:54 ` [PATCH bpf-next 2/4] selftests/bpf: Add cgroup kfunc / kptr selftests David Vernet
2022-11-22 5:54 ` [PATCH bpf-next 3/4] bpf: Add bpf_cgroup_ancestor() kfunc David Vernet
2022-11-22 5:54 ` [PATCH bpf-next 4/4] selftests/bpf: Add selftests for " David Vernet
2022-11-22 22:44 ` Tejun Heo [this message]
2022-11-22 23:00 ` [PATCH bpf-next 0/4] Support storing struct cgroup * objects as kptrs patchwork-bot+netdevbpf
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