WARNING: Co-developed-by and Signed-off-by: name/email do not match
#21: 
Co-developed-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: pengdonglin <pengdonglin@xiaomi.com>

WARNING: line length of 97 exceeds 80 columns
#138: FILE: tools/lib/bpf/btf.c:5828:
+static struct btf_permute *btf_permute_new(struct btf *btf, const struct btf_permute_opts *opts);

WARNING: Block comments use a trailing */ on a separate line
#196: FILE: tools/lib/bpf/btf.c:5886:
+	 * type ID, its length equals to the above ids */

WARNING: line length of 96 exceeds 80 columns
#200: FILE: tools/lib/bpf/btf.c:5890:
+static struct btf_permute *btf_permute_new(struct btf *btf, const struct btf_permute_opts *opts)

ERROR: space prohibited before that ':' (ctx:WxV)
#382: FILE: tools/lib/bpf/btf.h:287:
+	size_t :0;
 	       ^

CHECK: Please use a blank line after function/struct/union/enum declarations
#384: FILE: tools/lib/bpf/btf.h:289:
+};
+#define btf_permute_opts__last_field ids

WARNING: line length of 82 exceeds 80 columns
#386: FILE: tools/lib/bpf/btf.h:291:
+LIBBPF_API int btf__permute(struct btf *btf, const struct btf_permute_opts *opts);

WARNING: line length of 81 exceeds 80 columns
#406: FILE: tools/lib/bpf/btf_sort.c:10:
+#define btf_type_by_id				(struct btf_type *)btf_type_by_id

ERROR: Macros with complex values should be enclosed in parentheses
#406: FILE: tools/lib/bpf/btf_sort.c:10:
+#define btf_type_by_id				(struct btf_type *)btf_type_by_id

BUT SEE:

   do {} while (0) advice is over-stated in a few situations:

   The more obvious case is macros, like MODULE_PARM_DESC, invoked at
   file-scope, where C disallows code (it must be in functions).  See
   $exceptions if you have one to add by name.

   More troublesome is declarative macros used at top of new scope,
   like DECLARE_PER_CPU.  These might just compile with a do-while-0
   wrapper, but would be incorrect.  Most of these are handled by
   detecting struct,union,etc declaration primitives in $exceptions.

   Theres also macros called inside an if (block), which "return" an
   expression.  These cannot do-while, and need a ({}) wrapper.

   Enjoy this qualification while we work to improve our heuristics.

WARNING: line length of 81 exceeds 80 columns
#437: FILE: tools/lib/bpf/btf_sort.c:41:
+static int btf_compare_type_kinds_names(const void *a, const void *b, void *priv)

WARNING: line length of 81 exceeds 80 columns
#467: FILE: tools/lib/bpf/btf_sort.c:71:
+static __s32 notrace __btf_find_by_name_kind(const struct btf *btf, int start_id,

CHECK: Alignment should match open parenthesis
#468: FILE: tools/lib/bpf/btf_sort.c:72:
+static __s32 notrace __btf_find_by_name_kind(const struct btf *btf, int start_id,
+				   const char *type_name, __u32 kind)

WARNING: line length of 88 exceeds 80 columns
#478: FILE: tools/lib/bpf/btf_sort.c:82:
+		err = __btf_find_by_name_kind(btf->base_btf, start_id, type_name, kind);

ERROR: space required before the open parenthesis '('
#492: FILE: tools/lib/bpf/btf_sort.c:96:
+			while(start <= end) {

WARNING: line length of 86 exceeds 80 columns
#496: FILE: tools/lib/bpf/btf_sort.c:100:
+				ret = cmp_btf_kind_name(BTF_INFO_KIND(t->info), tname,

CHECK: braces {} should be used on all arms of this statement
#498: FILE: tools/lib/bpf/btf_sort.c:102:
+				if (ret < 0)
[...]
+				else {
[...]

CHECK: Unbalanced braces around else statement
#500: FILE: tools/lib/bpf/btf_sort.c:104:
+				else {

CHECK: Alignment should match open parenthesis
#532: FILE: tools/lib/bpf/btf_sort.c:136:
+static __s32 notrace _btf_find_by_name_kind(const struct btf *btf, int start_id,
+				   const char *type_name, __u32 kind)

WARNING: line length of 83 exceeds 80 columns
#537: FILE: tools/lib/bpf/btf_sort.c:141:
+	return libbpf_err(__btf_find_by_name_kind(btf, start_id, type_name, kind));

WARNING: line length of 108 exceeds 80 columns
#583: FILE: tools/lib/bpf/btf_sort.h:7:
+static __s32 _btf_find_by_name_kind(const struct btf *btf, int start_id, const char *type_name, __u32 kind);

WARNING: line length of 82 exceeds 80 columns
#584: FILE: tools/lib/bpf/btf_sort.h:8:
+static int btf_compare_type_kinds_names(const void *a, const void *b, void *priv);

total: 3 errors, 13 warnings, 5 checks, 539 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 63b03b69794d ("btf: implement BTF type sorting for accelerated lookups") 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.