WARNING: line length of 81 exceeds 80 columns
#65: FILE: tools/lib/bpf/libbpf.c:7775:
+	return type == BPF_TRACE_FENTRY_MULTI || type == BPF_TRACE_FEXIT_MULTI ||

WARNING: line length of 94 exceeds 80 columns
#69: FILE: tools/lib/bpf/libbpf.c:7779:
+static const struct module_btf *find_attach_module(struct bpf_object *obj, const char *attach)

WARNING: line length of 93 exceeds 80 columns
#94: FILE: tools/lib/bpf/libbpf.c:7804:
+		if (strncmp(mod->name, mod_name, mod_len) == 0 && mod->name[mod_len] == '\0')

WARNING: line length of 101 exceeds 80 columns
#152: FILE: tools/lib/bpf/libbpf.c:10072:
+static int attach_tracing_multi(const struct bpf_program *prog, long cookie, struct bpf_link **link);

WARNING: line length of 100 exceeds 80 columns
#160: FILE: tools/lib/bpf/libbpf.c:10121:
+	SEC_DEF("fsession.multi+",	TRACING, BPF_TRACE_FSESSION_MULTI, 0, attach_tracing_multi),

WARNING: line length of 112 exceeds 80 columns
#161: FILE: tools/lib/bpf/libbpf.c:10122:
+	SEC_DEF("fsession.multi.s+",	TRACING, BPF_TRACE_FSESSION_MULTI, SEC_SLEEPABLE, attach_tracing_multi),

WARNING: line length of 98 exceeds 80 columns
#162: FILE: tools/lib/bpf/libbpf.c:10123:
+	SEC_DEF("fentry.multi+",	TRACING, BPF_TRACE_FENTRY_MULTI, 0, attach_tracing_multi),

WARNING: line length of 97 exceeds 80 columns
#163: FILE: tools/lib/bpf/libbpf.c:10124:
+	SEC_DEF("fexit.multi+",		TRACING, BPF_TRACE_FEXIT_MULTI, 0, attach_tracing_multi),

WARNING: line length of 110 exceeds 80 columns
#164: FILE: tools/lib/bpf/libbpf.c:10125:
+	SEC_DEF("fentry.multi.s+",	TRACING, BPF_TRACE_FENTRY_MULTI, SEC_SLEEPABLE, attach_tracing_multi),

WARNING: line length of 109 exceeds 80 columns
#165: FILE: tools/lib/bpf/libbpf.c:10126:
+	SEC_DEF("fexit.multi.s+",	TRACING, BPF_TRACE_FEXIT_MULTI, SEC_SLEEPABLE, attach_tracing_multi),

WARNING: line length of 85 exceeds 80 columns
#174: FILE: tools/lib/bpf/libbpf.c:12596:
+collect_btf_func_ids_by_glob(const struct btf *btf, const char *pattern, __u32 **ids)

WARNING: line length of 85 exceeds 80 columns
#198: FILE: tools/lib/bpf/libbpf.c:12620:
+		err = libbpf_ensure_mem((void **) ids, &cap, sizeof(**ids), cnt + 1);

CHECK: No space is necessary after a cast
#198: FILE: tools/lib/bpf/libbpf.c:12620:
+		err = libbpf_ensure_mem((void **) ids, &cap, sizeof(**ids), cnt + 1);

WARNING: line length of 101 exceeds 80 columns
#209: FILE: tools/lib/bpf/libbpf.c:12631:
+static int collect_func_ids_by_glob(const struct bpf_program *prog, const char *pattern, __u32 **ids)

WARNING: line length of 82 exceeds 80 columns
#221: FILE: tools/lib/bpf/libbpf.c:12643:
+	/* In case we have module specified, we will find its btf and use that. */

WARNING: line length of 86 exceeds 80 columns
#246: FILE: tools/lib/bpf/libbpf.c:12668:
+bpf_program__attach_tracing_multi(const struct bpf_program *prog, const char *pattern,

WARNING: line length of 82 exceeds 80 columns
#296: FILE: tools/lib/bpf/libbpf.c:12718:
+	link_fd = bpf_link_create(prog_fd, 0, prog->expected_attach_type, &lopts);

WARNING: line length of 86 exceeds 80 columns
#299: FILE: tools/lib/bpf/libbpf.c:12721:
+		pr_warn("prog '%s': failed to attach: %s\n", prog->name, errstr(err));

WARNING: line length of 100 exceeds 80 columns
#312: FILE: tools/lib/bpf/libbpf.c:12734:
+static int attach_tracing_multi(const struct bpf_program *prog, long cookie, struct bpf_link **link)

ERROR: space prohibited before that ':' (ctx:WxV)
#381: FILE: tools/lib/bpf/libbpf.h:735:
+	size_t :0;
 	       ^

WARNING: line length of 86 exceeds 80 columns
#387: FILE: tools/lib/bpf/libbpf.h:741:
+bpf_program__attach_tracing_multi(const struct bpf_program *prog, const char *pattern,

total: 1 errors, 19 warnings, 1 checks, 331 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 bfa55fce6c04 ("libbpf: Add support to create tracing multi link") 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.