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authorYonghong Song <yhs@fb.com>2021-10-21 12:56:49 -0700
committerAlexei Starovoitov <ast@kernel.org>2021-10-22 17:04:44 -0700
commit5a8671349dd1cfe6255c524d37d6265df7483f36 (patch)
treec765ff64bdb2f6a1396171d7a9315cfe5b23ae37 /Documentation
parent8c18ea2d2c2913c80d8700c8bc8fe8568b8650a1 (diff)
docs/bpf: Update documentation for BTF_KIND_DECL_TAG typedef support
Add BTF_KIND_DECL_TAG typedef support in btf.rst. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20211021195649.4020514-1-yhs@fb.com
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/bpf/btf.rst6
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/bpf/btf.rst b/Documentation/bpf/btf.rst
index 9e5b4a98af76..9ad4218a751f 100644
--- a/Documentation/bpf/btf.rst
+++ b/Documentation/bpf/btf.rst
@@ -474,7 +474,7 @@ No additional type data follow ``btf_type``.
* ``info.kind_flag``: 0
* ``info.kind``: BTF_KIND_DECL_TAG
* ``info.vlen``: 0
- * ``type``: ``struct``, ``union``, ``func`` or ``var``
+ * ``type``: ``struct``, ``union``, ``func``, ``var`` or ``typedef``
``btf_type`` is followed by ``struct btf_decl_tag``.::
@@ -483,8 +483,8 @@ No additional type data follow ``btf_type``.
};
The ``name_off`` encodes btf_decl_tag attribute string.
-The ``type`` should be ``struct``, ``union``, ``func`` or ``var``.
-For ``var`` type, ``btf_decl_tag.component_idx`` must be ``-1``.
+The ``type`` should be ``struct``, ``union``, ``func``, ``var`` or ``typedef``.
+For ``var`` or ``typedef`` type, ``btf_decl_tag.component_idx`` must be ``-1``.
For the other three types, if the btf_decl_tag attribute is
applied to the ``struct``, ``union`` or ``func`` itself,
``btf_decl_tag.component_idx`` must be ``-1``. Otherwise,