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

WARNING: line length of 89 exceeds 80 columns
#128: FILE: tools/lib/bpf/libbpf.c:12860:
+	link_create_opts.cgroup.expected_revision = OPTS_GET(opts, expected_revision, 0);

WARNING: line length of 83 exceeds 80 columns
#133: FILE: tools/lib/bpf/libbpf.c:12865:
+	return bpf_program_attach_fd(prog, cgroup_fd, "cgroup", &link_create_opts);

ERROR: space prohibited before that ':' (ctx:WxV)
#154: FILE: tools/lib/bpf/libbpf.h:887:
+	size_t :0;
 	       ^

CHECK: Please use a blank line after function/struct/union/enum declarations
#156: FILE: tools/lib/bpf/libbpf.h:889:
+};
+#define bpf_cgroup_opts__last_field expected_revision

total: 1 errors, 2 warnings, 1 checks, 123 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 f470b1232b33 ("libbpf: Support link-based cgroup attach with options") 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.