WARNING: line length of 100 exceeds 80 columns
#37: FILE: tools/lib/bpf/btf.c:2093:
+static int btf_add_ref_kind(struct btf *btf, int kind, const char *name, int ref_type_id, int kflag)

WARNING: line length of 87 exceeds 80 columns
#216: FILE: tools/lib/bpf/btf.h:230:
+LIBBPF_API int btf__add_type_attr(struct btf *btf, const char *value, int ref_type_id);

WARNING: line length of 86 exceeds 80 columns
#224: FILE: tools/lib/bpf/btf.h:247:
+LIBBPF_API int btf__add_decl_attr(struct btf *btf, const char *value, int ref_type_id,

total: 0 errors, 3 warnings, 0 checks, 185 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 38baac3ebdae ("libbpf: introduce kflag for type_tags and decl_tags in BTF") 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.
total: 0 errors, 3 warnings, 0 checks, 185 lines checked