CHECK: Prefer using the BIT macro
#50: FILE: tools/bpf/resolve_btfids/main.c:155:
+#define KF_IMPLICIT_ARGS (1 << 16)

WARNING: line length of 93 exceeds 80 columns
#111: FILE: tools/bpf/resolve_btfids/main.c:1029:
+static const struct btf_type *btf__unqualified_type_by_id(const struct btf *btf, s32 type_id)

WARNING: line length of 85 exceeds 80 columns
#122: FILE: tools/bpf/resolve_btfids/main.c:1040:
+static bool btf__is_kf_implicit_arg(const struct btf *btf, const struct btf_param *p)

WARNING: line length of 86 exceeds 80 columns
#169: FILE: tools/bpf/resolve_btfids/main.c:1087:
+static s64 process_kfunc_with_implicit_args(struct btf2btf_context *ctx, s32 kfunc_id)

WARNING: line length of 88 exceeds 80 columns
#183: FILE: tools/bpf/resolve_btfids/main.c:1101:
+		pr_err("WARN: resolve_btfids: btf id %d is not a function\n", kfunc_id);

WARNING: line length of 99 exceeds 80 columns
#194: FILE: tools/bpf/resolve_btfids/main.c:1112:
+		pr_err("ERROR: resolve_btfids: btf id %d is not a function prototype\n", proto_id);

WARNING: line length of 87 exceeds 80 columns
#198: FILE: tools/bpf/resolve_btfids/main.c:1116:
+	len = snprintf(tmp_name, sizeof(tmp_name), "%s%s", kfunc_name, KF_IMPL_SUFFIX);

WARNING: line length of 95 exceeds 80 columns
#200: FILE: tools/bpf/resolve_btfids/main.c:1118:
+		pr_err("ERROR: function name is too long: %s%s\n", kfunc_name, KF_IMPL_SUFFIX);

WARNING: line length of 90 exceeds 80 columns
#205: FILE: tools/bpf/resolve_btfids/main.c:1123:
+		pr_debug("resolve_btfids: function %s already exists in BTF\n", tmp_name);

WARNING: line length of 90 exceeds 80 columns
#212: FILE: tools/bpf/resolve_btfids/main.c:1130:
+		pr_err("ERROR: resolve_btfids: failed to add func %s to BTF\n", tmp_name);

WARNING: line length of 90 exceeds 80 columns
#216: FILE: tools/bpf/resolve_btfids/main.c:1134:
+	/* Copy all decl tags except "bpf_kfunc" from the original kfunc to the new one */

WARNING: line length of 88 exceeds 80 columns
#236: FILE: tools/bpf/resolve_btfids/main.c:1154:
+	 * Drop the _impl suffix and point kfunc_name to the local buffer for later use.

WARNING: line length of 95 exceeds 80 columns
#254: FILE: tools/bpf/resolve_btfids/main.c:1172:
+		pr_err("ERROR: resolve_btfids: failed to add func proto for %s\n", kfunc_name);

WARNING: line length of 94 exceeds 80 columns
#273: FILE: tools/bpf/resolve_btfids/main.c:1191:
+	pr_debug("resolve_btfids: updated BTF for kfunc with implicit args %s\n", kfunc_name);

WARNING: line length of 90 exceeds 80 columns
#278: FILE: tools/bpf/resolve_btfids/main.c:1196:
+static s64 btf__collect_decl_tags(const struct btf *btf, s32 *decl_tags, u32 decl_tags_sz)

CHECK: Alignment should match open parenthesis
#290: FILE: tools/bpf/resolve_btfids/main.c:1208:
+			pr_err("ERROR: resolve_btfids: too many decl tags in BTF - limit %s\n",
+				decl_tags_sz);

WARNING: line length of 81 exceeds 80 columns
#299: FILE: tools/bpf/resolve_btfids/main.c:1217:
+static s64 build_btf2btf_context(struct object *obj, struct btf2btf_context *ctx)

WARNING: line length of 100 exceeds 80 columns
#303: FILE: tools/bpf/resolve_btfids/main.c:1221:
+	nr_decl_tags = btf__collect_decl_tags(obj->btf, ctx->decl_tags, ARRAY_SIZE(ctx->decl_tags));

WARNING: line length of 98 exceeds 80 columns
#323: FILE: tools/bpf/resolve_btfids/main.c:1241:
+	nr_kfuncs = collect_kfunc_ids_by_flags(obj, KF_IMPLICIT_ARGS, kfuncs, ARRAY_SIZE(kfuncs));

total: 0 errors, 17 warnings, 2 checks, 300 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 df91fabfcc58 ("resolve_btfids: Support for KF_IMPLICIT_ARGS") 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, 17 warnings, 2 checks, 300 lines checked