selftests/bpf: Verify decl tags emission in resolve_btfids test

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Extend test_resolve_btfids() to assert that resolve_btfids emits a
BTF_KIND_DECL_TAG named "bpf_kfunc" for every kfunc, and
"bpf_fastcall" for kfuncs marked KF_FASTCALL.

Add a btf_has_decl_tag() helper that scans the output BTF for a decl
tag matching name and target.

Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://patch.msgid.link/20260807032029.78092-6-ihor.solodrai@linux.dev
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>

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Ihor Solodrai 2026-08-06 20:20:28 -07:00 • committed by Eduard Zingerman

parent 6923931049

commit 9f3881ecad

1 changed files with 40 additions and 0 deletions

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tools/testing/selftests/bpf/prog_tests/resolve_btfids.c

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