WARNING: line length of 85 exceeds 80 columns
#131: FILE: tools/bpf/bpftool/btf.c:1010:
+				p_err("only %d root_id are supported", MAX_ROOT_IDS);

WARNING: line length of 88 exceeds 80 columns
#146: FILE: tools/bpf/bpftool/btf.c:1025:
+					p_err("duplicate root_id %d supplied", root_id);

total: 0 errors, 2 warnings, 0 checks, 95 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 ff2745150ae1 ("bpftool: btf: Support dumping a specific types from file") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE 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, 2 warnings, 0 checks, 95 lines checked