Re: [PATCH v9 bpf-next 09/10] bpftool: Update doc to describe bpftool btf dump .. format metadata

> diff --git a/tools/bpf/bpftool/Documentation/bpftool-btf.rst b/tools/bpf/bpftool/Documentation/bpftool-btf.rst
> --- a/tools/bpf/bpftool/Documentation/bpftool-btf.rst
> +++ b/tools/bpf/bpftool/Documentation/bpftool-btf.rst

[ ... ]

> +Display BTF metadata from file vmlinux
> +
> +**# bpftool btf dump file vmlinux format meta**
> +
> +::
> +
> +  size 5161076
> +  magic 0xeb9f
> +  version 1
> +  flags 0x1
> +  hdr_len 40
> +  type_len 3036368
> +  type_off 0
> +  str_len 2124588
> +  str_off 3036368
> +  layout_len 80
> +  layout_off 5160956
> +  kind 0    UNKNOWN    info_sz 0    elem_sz 0
> +  kind 1    INT        info_sz 0    elem_sz 0
> +  kind 2    PTR        info_sz 0    elem_sz 0
> +  kind 3    ARRAY      info_sz 0    elem_sz 0
> +  kind 4    STRUCT     info_sz 0    elem_sz 0

Should these kind lines include the "flags" field?  Looking at
dump_btf_meta() in btf.c, the printf for the plain text output is:

    printf("kind %-4u %-10s info_sz %-4d elem_sz %-4d flags %-4d\n",
           i, i < NR_BTF_KINDS ? btf_kind_str[i] : "?",
           l[i].info_sz, l[i].elem_sz, l[i].flags);

The actual output would include "flags 0" at the end of each kind
line, but the documentation example omits it.


---
AI reviewed your patch. Please fix the bug or email reply why it's not a bug.
See: https://github.com/kernel-patches/vmtest/blob/master/ci/claude/README.md

CI run summary: https://github.com/kernel-patches/bpf/actions/runs/22436234361

AI-authorship-score: low
AI-authorship-explanation: Straightforward RST documentation update with iterative human review history spanning 2023-2026, typical of a developer documenting their own feature.
issues-found: 1
issue-severity-score: low
issue-severity-explanation: Documentation example output is missing the flags field that the implementation always prints, causing a mismatch between docs and actual command output.