WARNING: line length of 81 exceeds 80 columns
#149: FILE: tools/bpf/bpftool/btf.c:537:
+		if (strncmp(name, KFUNC_DECL_TAG, sizeof(KFUNC_DECL_TAG)) == 0) {

WARNING: line length of 87 exceeds 80 columns
#155: FILE: tools/bpf/bpftool/btf.c:543:
+		if (strncmp(name, FASTCALL_DECL_TAG, sizeof(FASTCALL_DECL_TAG)) == 0) {

WARNING: line length of 90 exceeds 80 columns
#163: FILE: tools/bpf/bpftool/btf.c:551:
+	qsort_r(kfuncs.elems, kfuncs.cnt, sizeof(*kfuncs.elems), cmp_kfuncs, (void *)btf);

total: 0 errors, 3 warnings, 0 checks, 157 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 08ffed264a86 ("bpftool: __bpf_fastcall for kfuncs marked with special decl_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.
total: 0 errors, 3 warnings, 0 checks, 157 lines checked