Hello, On Fri, May 20, 2022 at 03:19:19PM -0700, Alexei Starovoitov wrote: > We have bpf_map iterator that walks all bpf maps. > When map iterator is parametrized with map_fd the iterator walks > all elements of that map. > cgroup iterator should have similar semantics. > When non-parameterized it will walk all cgroups and their descendent > depth first way. I believe that's what Yonghong is proposing. > When parametrized it will start from that particular cgroup and > walk all descendant of that cgroup only. > The bpf prog can stop the iteration right away with ret 1. > Maybe we can add two parameters. One -> cgroup_fd to use and another -> > the order of iteration css_for_each_descendant_pre vs _post. > wdyt? Sounds perfectly reasonable to me. Thanks. -- tejun
