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223f903e9c
Patch set [1] introduced BTF_KIND_TAG to allow tagging declarations for struct/union, struct/union field, var, func and func arguments and these tags will be encoded into dwarf. They are also encoded to btf by llvm for the bpf target. After BTF_KIND_TAG is introduced, we intended to use it for kernel __user attributes. But kernel __user is actually a type attribute. Upstream and internal discussion showed it is not a good idea to mix declaration attribute and type attribute. So we proposed to introduce btf_type_tag as a type attribute and existing btf_tag renamed to btf_decl_tag ([2]). This patch renamed BTF_KIND_TAG to BTF_KIND_DECL_TAG and some other declarations with *_tag to *_decl_tag to make it clear the tag is for declaration. In the future, BTF_KIND_TYPE_TAG might be introduced per [3]. [1] https://lore.kernel.org/bpf/20210914223004.244411-1-yhs@fb.com/ [2] https://reviews.llvm.org/D111588 [3] https://reviews.llvm.org/D111199 Fixes: |
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.. | ||
libbpf | ||
bpf_design_QA.rst | ||
bpf_devel_QA.rst | ||
bpf_licensing.rst | ||
bpf_lsm.rst | ||
btf.rst | ||
drgn.rst | ||
index.rst | ||
llvm_reloc.rst | ||
map_cgroup_storage.rst | ||
prog_cgroup_sockopt.rst | ||
prog_cgroup_sysctl.rst | ||
prog_flow_dissector.rst | ||
prog_sk_lookup.rst | ||
ringbuf.rst | ||
s390.rst |