==========
checkpatch - FAILED

WARNING: line length of 96 exceeds 80 columns
#65: FILE: tools/lib/bpf/btf.c:5855:
+int btf__permute(struct btf *btf, __u32 *ids, __u32 ids_sz, const struct btf_permute_opts *opts)

CHECK: Unnecessary parentheses around 'ids_sz > btf->nr_types'
#71: FILE: tools/lib/bpf/btf.c:5861:
+	if (!OPTS_VALID(opts, btf_permute_opts) || (ids_sz > btf->nr_types))

WARNING: braces {} are not necessary for single statement blocks
#91: FILE: tools/lib/bpf/btf.c:5881:
+	if (err < 0) {
+		goto done;
+	}

WARNING: braces {} are not necessary for single statement blocks
#95: FILE: tools/lib/bpf/btf.c:5885:
+	if (err < 0) {
+		goto done;
+	}

WARNING: line length of 91 exceeds 80 columns
#169: FILE: tools/lib/bpf/btf.c:5959:
+		btf->raw_size = btf->hdr->hdr_len + btf->hdr->type_len + btf->hdr->str_len;

WARNING: line length of 81 exceeds 80 columns
#216: FILE: tools/lib/bpf/btf.c:6006:
+	return btf_remap_types(p->btf, p->btf_ext, btf_permute_remap_type_id, p);

ERROR: space prohibited before that ':' (ctx:WxV)
#231: FILE: tools/lib/bpf/btf.h:280:
+	size_t :0;
 	       ^

CHECK: Please use a blank line after function/struct/union/enum declarations
#233: FILE: tools/lib/bpf/btf.h:282:
+};
+#define btf_permute_opts__last_field btf_ext

WARNING: line length of 89 exceeds 80 columns
#236: FILE: tools/lib/bpf/btf.h:285:
+ * @brief **btf__permute()** rearranges BTF types in-place according to specified mapping

WARNING: line length of 96 exceeds 80 columns
#238: FILE: tools/lib/bpf/btf.h:287:
+ * @param ids Array containing original type IDs (exclude VOID type ID 0) in user-defined order.

WARNING: line length of 95 exceeds 80 columns
#243: FILE: tools/lib/bpf/btf.h:292:
+ * **btf__permute()** performs an in-place permutation of BTF types, rearranging them according

WARNING: line length of 93 exceeds 80 columns
#244: FILE: tools/lib/bpf/btf.h:293:
+ * to the order specified in @ids array. If @ids_sz is smaller than the total number of types

WARNING: line length of 88 exceeds 80 columns
#245: FILE: tools/lib/bpf/btf.h:294:
+ * in @btf, the BTF will be truncated to contain only the types specified in @ids. After

WARNING: line length of 93 exceeds 80 columns
#246: FILE: tools/lib/bpf/btf.h:295:
+ * reordering, all type references within the BTF data and optional BTF extension are updated

WARNING: line length of 96 exceeds 80 columns
#247: FILE: tools/lib/bpf/btf.h:296:
+ * to maintain consistency. Subsequent btf__dedup may be required if the BTF is truncated during

WARNING: line length of 96 exceeds 80 columns
#252: FILE: tools/lib/bpf/btf.h:301:
+ *   - -EINVAL: Invalid parameters or invalid ID mapping (e.g., duplicate IDs, out-of-range IDs)

total: 1 errors, 13 warnings, 2 checks, 221 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 641e88c388d3 ("libbpf: Add BTF permutation support for type reordering") 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.