WARNING: line length of 86 exceeds 80 columns
#83: FILE: tools/lib/bpf/libbpf.c:1022:
+	kern_vtype_id = find_ksym_btf_id(obj, stname, BTF_KIND_STRUCT, &btf, mod_btf);

WARNING: line length of 96 exceeds 80 columns
#87: FILE: tools/lib/bpf/libbpf.c:1024:
+		pr_warn("struct_ops init_kern: struct %s is not found in kernel BTF\n", stname);

WARNING: line length of 95 exceeds 80 columns
#94: FILE: tools/lib/bpf/libbpf.c:1031:
+		pr_warn("struct_ops init_kern: struct %s is not found in kernel BTF\n", tname);

total: 0 errors, 3 warnings, 0 checks, 61 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 8caabb77dcf1 ("libbpf: fix error when st-prefix_ops and ops from differ 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, 61 lines checked