WARNING: line length of 90 exceeds 80 columns
#50: FILE: tools/bpf/resolve_btfids/main.c:206:
+static struct btf_id *btf_id__add(struct rb_root *root, char *name, enum btf_id_kind kind)

WARNING: else is not generally useful after a break or return
#62: FILE: tools/bpf/resolve_btfids/main.c:223:
+			return id;
+		else {

CHECK: Unbalanced braces around else statement
#62: FILE: tools/bpf/resolve_btfids/main.c:223:
+		else {

WARNING: line length of 94 exceeds 80 columns
#63: FILE: tools/bpf/resolve_btfids/main.c:224:
+			pr_err("Unexpected duplicate symbol %s of kind %d\n", name, id->kind);

WARNING: line length of 84 exceeds 80 columns
#81: FILE: tools/bpf/resolve_btfids/main.c:273:
+static struct btf_id *add_set(struct object *obj, char *name, enum btf_id_kind kind)

WARNING: line length of 98 exceeds 80 columns
#102: FILE: tools/bpf/resolve_btfids/main.c:292:
+		pr_err("Unexpected kind %d passed to %s() for symbol %s\n", kind, __func__, name);

WARNING: line length of 85 exceeds 80 columns
#164: FILE: tools/bpf/resolve_btfids/main.c:666:
+	if (!id->id && id->kind != BTF_ID_KIND_SET && id->kind != BTF_ID_KIND_SET8) {

WARNING: line length of 95 exceeds 80 columns
#200: FILE: tools/bpf/resolve_btfids/main.c:774:
+			pr_err("Unexpected btf_id_kind %d for set '%s'\n", id->kind, id->name);

WARNING: line length of 83 exceeds 80 columns
#206: FILE: tools/bpf/resolve_btfids/main.c:778:
+		pr_debug("sorting  addr %5lu: cnt %6d [%s]\n", off, cnt, id->name);

total: 0 errors, 8 warnings, 1 checks, 180 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 72bf3f34c995 ("resolve_btfids: Introduce enum btf_id_kind") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES 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, 8 warnings, 1 checks, 180 lines checked