ERROR: Macros with complex values should be enclosed in parentheses
#65: FILE: tools/testing/selftests/bpf/test_btf.h:75:
+#define BTF_DECL_ATTR_ENC(value, type, component_idx)	\
+	BTF_TYPE_ENC(value, BTF_INFO_ENC(BTF_KIND_DECL_TAG, 1, 0), type), (component_idx)

WARNING: line length of 89 exceeds 80 columns
#66: FILE: tools/testing/selftests/bpf/test_btf.h:76:
+	BTF_TYPE_ENC(value, BTF_INFO_ENC(BTF_KIND_DECL_TAG, 1, 0), type), (component_idx)

total: 1 errors, 1 warnings, 0 checks, 46 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 4002fdd704b2 ("selftests/bpf: add a BTF verification test for kflagged type_tag") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.