Hello:

This series was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov [off-list ref]:

On Tue, 23 Aug 2022 20:00:26 -0700 you wrote:

This patch series allows for using bpf to collect hierarchical cgroup
stats efficiently by integrating with the rstat framework. The rstat
framework provides an efficient way to collect cgroup stats percpu and
propagate them through the cgroup hierarchy.

The stats are exposed to userspace in textual form by reading files in
bpffs, similar to cgroupfs stats by using a cgroup_iter program.
cgroup_iter is a type of bpf_iter. It walks over cgroups in four modes:
- walking a cgroup's descendants in pre-order.
- walking a cgroup's descendants in post-order.
- walking a cgroup's ancestors.
- process only a single object.

[...]

Here is the summary with links:
  - [bpf-next,v9,1/5] bpf: Introduce cgroup iter
    https://git.kernel.org/bpf/bpf-next/c/d4ccaf58a847
  - [bpf-next,v9,2/5] selftests/bpf: Test cgroup_iter.
    https://git.kernel.org/bpf/bpf-next/c/fe0dd9d4b740
  - [bpf-next,v9,3/5] cgroup: bpf: enable bpf programs to integrate with rstat
    https://git.kernel.org/bpf/bpf-next/c/a319185be9f5
  - [bpf-next,v9,4/5] selftests/bpf: extend cgroup helpers
    https://git.kernel.org/bpf/bpf-next/c/434992bb6037
  - [bpf-next,v9,5/5] selftests/bpf: add a selftest for cgroup hierarchical stats collection
    (no matching commit)

You are awesome, thank you!
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