WARNING: line length of 81 exceeds 80 columns
#43: FILE: include/asm-generic/btf_ids.lds.h:15:
+#define BTF_IDS_SUBSEG(sfx)							\

WARNING: Non-declarative macros with multiple statements should be enclosed in a do - while loop
#43: FILE: include/asm-generic/btf_ids.lds.h:15:
+#define BTF_IDS_SUBSEG(sfx)							\
+		KEEP(*(.BTF_ids.##sfx))						\
+		__BTF_ids_seg_end_##sfx = .;

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: macros should not use a trailing semicolon
#43: FILE: include/asm-generic/btf_ids.lds.h:15:
+#define BTF_IDS_SUBSEG(sfx)							\
+		KEEP(*(.BTF_ids.##sfx))						\
+		__BTF_ids_seg_end_##sfx = .;

WARNING: line length of 81 exceeds 80 columns
#44: FILE: include/asm-generic/btf_ids.lds.h:16:
+		KEEP(*(.BTF_ids.##sfx))						\

WARNING: line length of 82 exceeds 80 columns
#141: FILE: tools/bpf/resolve_btfids/main.c:357:
+		pr_err("FAILED scatter set symbol name overflow: %s\n", id->name);

WARNING: line length of 84 exceeds 80 columns
#153: FILE: tools/bpf/resolve_btfids/main.c:369:
+		       id->name, (unsigned long)begin, sym_end, (unsigned long)end);

WARNING: line length of 82 exceeds 80 columns
#189: FILE: tools/bpf/resolve_btfids/main.c:631:
+			if (id && scatter_set_cnt_from_seg(obj, id, sym.st_value))

total: 0 errors, 7 warnings, 0 checks, 168 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 835e0c7639ed ("bpf: Teach resolve_btfids about the setsc type") 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, 7 warnings, 0 checks, 168 lines checked