CHECK: Please use a blank line after function/struct/union/enum declarations
#77: FILE: include/linux/btf.h:649:
 }
+static inline u32 btf_kfunc_id_remap(const struct btf *btf, u32 kfunc_btf_id,

WARNING: line length of 92 exceeds 80 columns
#140: FILE: kernel/bpf/btf.c:8395:
+	memcpy(set->pairs + set->cnt, add_set->pairs, add_set->cnt * sizeof(set->pairs[0]));

WARNING: line length of 81 exceeds 80 columns
#147: FILE: kernel/bpf/btf.c:8402:
+	sort(set->pairs, set->cnt, sizeof(set->pairs[0]), btf_id_cmp_func, NULL);

WARNING: line length of 84 exceeds 80 columns
#199: FILE: kernel/bpf/btf.c:8456:
+		if (add_remap && hook_remap->nr_remaps == BTF_KFUNC_REMAP_MAX_CNT) {

WARNING: line length of 88 exceeds 80 columns
#303: FILE: kernel/bpf/btf.c:8661:
+	remap_id = __btf_kfunc_id_remap(btf, BTF_KFUNC_HOOK_COMMON, kfunc_btf_id, prog);

WARNING: line length of 87 exceeds 80 columns
#333: FILE: kernel/bpf/verifier.c:3235:
+			insn->imm = btf_kfunc_id_remap(desc_btf, insn->imm, env->prog);

total: 0 errors, 5 warnings, 1 checks, 273 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 efc03a8314d3 ("bpf: Extend btf_kfunc_id_set to handle kfunc polymorphism") 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, 5 warnings, 1 checks, 273 lines checked