WARNING: line length of 98 exceeds 80 columns
#57: FILE: tools/lib/bpf/bpf.c:796:
+		attr.link_create.tracing_multi.ids = (__u64) OPTS_GET(opts, tracing_multi.ids, 0);

CHECK: No space is necessary after a cast
#57: FILE: tools/lib/bpf/bpf.c:796:
+		attr.link_create.tracing_multi.ids = (__u64) OPTS_GET(opts, tracing_multi.ids, 0);

WARNING: line length of 106 exceeds 80 columns
#58: FILE: tools/lib/bpf/bpf.c:797:
+		attr.link_create.tracing_multi.cookies = (__u64) OPTS_GET(opts, tracing_multi.cookies, 0);

CHECK: No space is necessary after a cast
#58: FILE: tools/lib/bpf/bpf.c:797:
+		attr.link_create.tracing_multi.cookies = (__u64) OPTS_GET(opts, tracing_multi.cookies, 0);

WARNING: line length of 90 exceeds 80 columns
#59: FILE: tools/lib/bpf/bpf.c:798:
+		attr.link_create.tracing_multi.cnt = OPTS_GET(opts, tracing_multi.cnt, 0);

WARNING: line length of 101 exceeds 80 columns
#90: FILE: tools/lib/bpf/libbpf.c:9830:
+static int attach_tracing_multi(const struct bpf_program *prog, long cookie, struct bpf_link **link);

WARNING: line length of 100 exceeds 80 columns
#98: FILE: tools/lib/bpf/libbpf.c:9879:
+	SEC_DEF("fsession.multi+",	TRACING, BPF_TRACE_FSESSION_MULTI, 0, attach_tracing_multi),

WARNING: line length of 112 exceeds 80 columns
#99: FILE: tools/lib/bpf/libbpf.c:9880:
+	SEC_DEF("fsession.multi.s+",	TRACING, BPF_TRACE_FSESSION_MULTI, SEC_SLEEPABLE, attach_tracing_multi),

WARNING: line length of 98 exceeds 80 columns
#100: FILE: tools/lib/bpf/libbpf.c:9881:
+	SEC_DEF("fentry.multi+",	TRACING, BPF_TRACE_FENTRY_MULTI, 0, attach_tracing_multi),

WARNING: line length of 97 exceeds 80 columns
#101: FILE: tools/lib/bpf/libbpf.c:9882:
+	SEC_DEF("fexit.multi+",		TRACING, BPF_TRACE_FEXIT_MULTI, 0, attach_tracing_multi),

WARNING: line length of 110 exceeds 80 columns
#102: FILE: tools/lib/bpf/libbpf.c:9883:
+	SEC_DEF("fentry.multi.s+",	TRACING, BPF_TRACE_FENTRY_MULTI, SEC_SLEEPABLE, attach_tracing_multi),

WARNING: line length of 109 exceeds 80 columns
#103: FILE: tools/lib/bpf/libbpf.c:9884:
+	SEC_DEF("fexit.multi.s+",	TRACING, BPF_TRACE_FEXIT_MULTI, SEC_SLEEPABLE, attach_tracing_multi),

WARNING: line length of 85 exceeds 80 columns
#166: FILE: tools/lib/bpf/libbpf.c:12315:
+collect_btf_func_ids_by_glob(const struct btf *btf, const char *pattern, __u32 **ids)

WARNING: line length of 85 exceeds 80 columns
#190: FILE: tools/lib/bpf/libbpf.c:12339:
+		err = libbpf_ensure_mem((void **) ids, &cap, sizeof(**ids), cnt + 1);

CHECK: No space is necessary after a cast
#190: FILE: tools/lib/bpf/libbpf.c:12339:
+		err = libbpf_ensure_mem((void **) ids, &cap, sizeof(**ids), cnt + 1);

WARNING: line length of 86 exceeds 80 columns
#202: FILE: tools/lib/bpf/libbpf.c:12351:
+bpf_program__attach_tracing_multi(const struct bpf_program *prog, const char *pattern,

WARNING: line length of 90 exceeds 80 columns
#227: FILE: tools/lib/bpf/libbpf.c:12376:
+		cnt = collect_btf_func_ids_by_glob(prog->obj->btf_vmlinux, pattern, &ids);

WARNING: line length of 82 exceeds 80 columns
#247: FILE: tools/lib/bpf/libbpf.c:12396:
+	link_fd = bpf_link_create(prog_fd, 0, prog->expected_attach_type, &lopts);

WARNING: line length of 86 exceeds 80 columns
#250: FILE: tools/lib/bpf/libbpf.c:12399:
+		pr_warn("prog '%s': failed to attach: %s\n", prog->name, errstr(err));

WARNING: line length of 100 exceeds 80 columns
#263: FILE: tools/lib/bpf/libbpf.c:12412:
+static int attach_tracing_multi(const struct bpf_program *prog, long cookie, struct bpf_link **link)

ERROR: space prohibited before that ':' (ctx:WxV)
#317: FILE: tools/lib/bpf/libbpf.h:710:
+	size_t :0;
 	       ^

WARNING: line length of 86 exceeds 80 columns
#323: FILE: tools/lib/bpf/libbpf.h:716:
+bpf_program__attach_tracing_multi(const struct bpf_program *prog, const char *pattern,

total: 1 errors, 18 warnings, 3 checks, 268 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 26ab31efdde9 ("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.