WARNING: line length of 87 exceeds 80 columns
#54: FILE: tools/testing/selftests/bpf/prog_tests/btf_kind.c:31:
+	ASSERT_EQ(hdr->str_off, hdr->layout_off + hdr->layout_len, "str_after_layout");

WARNING: line length of 83 exceeds 80 columns
#70: FILE: tools/testing/selftests/bpf/prog_tests/btf_kind.c:47:
+	ASSERT_EQ(hdr->str_off, hdr->type_off + hdr->type_len, "strs_after_types");

WARNING: Missing a blank line after declarations
#90: FILE: tools/testing/selftests/bpf/prog_tests/btf_kind.c:67:
+	__s32 int_id, unrec_id, id, id2;
+	LIBBPF_OPTS(btf_new_opts, opts);

WARNING: line length of 82 exceeds 80 columns
#152: FILE: tools/testing/selftests/bpf/prog_tests/btf_kind.c:129:
+	t = (void *)hdr + hdr->hdr_len + hdr->type_off + sizeof(struct btf_type) +

WARNING: line length of 85 exceeds 80 columns
#189: FILE: tools/testing/selftests/bpf/prog_tests/btf_kind.c:166:
+		/* id of "test_lookup2" will be id2 -1 as we have removed one type */

CHECK: Blank lines aren't necessary before a close brace '}'
#194: FILE: tools/testing/selftests/bpf/prog_tests/btf_kind.c:171:
+
+	}

CHECK: spaces preferred around that '/' (ctx:VxV)
#202: FILE: tools/testing/selftests/bpf/prog_tests/btf_kind.c:179:
+	l[NR_BTF_KINDS].elem_sz = sizeof(struct btf_type)/2;
 	                                                 ^

WARNING: line length of 85 exceeds 80 columns
#211: FILE: tools/testing/selftests/bpf/prog_tests/btf_kind.c:188:
+		/* id of "test_lookup2" will be id2 -1 as we have removed one type */

CHECK: Blank lines aren't necessary before a close brace '}'
#216: FILE: tools/testing/selftests/bpf/prog_tests/btf_kind.c:193:
+
+	}

total: 0 errors, 6 warnings, 3 checks, 206 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 52d13a9407c3 ("selftests/bpf: test kind encoding/decoding") 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, 6 warnings, 3 checks, 206 lines checked