Hello,

On Tue, May 10, 2022 at 12:18:06AM +0000, Yosry Ahmed wrote:

From: Hao Luo <redacted>

Introduce a new type of iter prog: cgroup. Unlike other bpf_iter, this
iter doesn't iterate a set of kernel objects. Instead, it is supposed to
be parameterized by a cgroup id and prints only that cgroup. So one
needs to specify a target cgroup id when attaching this iter. The target
cgroup's state can be read out via a link of this iter.

Is there a reason why this can't be a proper iterator which supports
lseek64() to locate a specific cgroup?

Thanks.

-- 
tejun