linux-kernel - Re: [PATCH bpf-next 0/2] Add CGROUP prefix to cgroup_iter

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Date:   Thu, 25 Aug 2022 15:00:36 -0700
From:   Hao Luo <haoluo@...gle.com>
To:     Andrii Nakryiko <andrii.nakryiko@...il.com>
Cc:     linux-kernel@...r.kernel.org, bpf@...r.kernel.org,
        netdev@...r.kernel.org, Alexei Starovoitov <ast@...nel.org>,
        Andrii Nakryiko <andrii@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        Song Liu <song@...nel.org>, Yonghong Song <yhs@...com>,
        KP Singh <kpsingh@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Stanislav Fomichev <sdf@...gle.com>,
        Yosry Ahmed <yosryahmed@...gle.com>
Subject: Re: [PATCH bpf-next 0/2] Add CGROUP prefix to cgroup_iter_order

On Thu, Aug 25, 2022 at 2:56 PM Andrii Nakryiko
<andrii.nakryiko@...il.com> wrote:
>
> On Thu, Aug 25, 2022 at 2:39 PM Hao Luo <haoluo@...gle.com> wrote:
> >
> > As suggested by Andrii, add 'CGROUP' to cgroup_iter_order. This fix is
> > divided into two patches. Patch 1/2 fixes the commit that introduced
> > cgroup_iter. Patch 2/2 fixes the selftest that uses the
> > cgroup_iter_order. This is because the selftest was introduced in a
>
> but if you split rename into two patches, you break selftests build
> and thus potentially bisectability of selftests regressions. So I
> think you have to keep both in the same patch.
>
> With that:
>
> Acked-by: Andrii Nakryiko <andrii@...nel.org>
>

Yeah. I wasn't sure what to do. Then we need bundle this fix with
those two commits together. Will squash the commits into one and send
a v2.

> > different commit. I tested this patchset via the following command:
> >
> >   test_progs -t cgroup,iter,btf_dump
> >
> > Hao Luo (2):
> >   bpf: Add CGROUP to cgroup_iter order
> >   selftests/bpf: Fix test that uses cgroup_iter order
> >
> >  include/uapi/linux/bpf.h                      | 10 +++---
> >  kernel/bpf/cgroup_iter.c                      | 32 +++++++++----------
> >  tools/include/uapi/linux/bpf.h                | 10 +++---
> >  .../selftests/bpf/prog_tests/btf_dump.c       |  2 +-
> >  .../prog_tests/cgroup_hierarchical_stats.c    |  2 +-
> >  .../selftests/bpf/prog_tests/cgroup_iter.c    | 10 +++---
> >  6 files changed, 33 insertions(+), 33 deletions(-)
> >
> > --
> > 2.37.2.672.g94769d06f0-goog
> >