WARNING: line length of 106 exceeds 80 columns
#42: FILE: tools/lib/bpf/bpf.c:795:
+		attr.link_create.tracing_multi.btf_ids = (__u64) OPTS_GET(opts, tracing_multi.btf_ids, 0);

CHECK: No space is necessary after a cast
#42: FILE: tools/lib/bpf/bpf.c:795:
+		attr.link_create.tracing_multi.btf_ids = (__u64) OPTS_GET(opts, tracing_multi.btf_ids, 0);

WARNING: line length of 106 exceeds 80 columns
#43: FILE: tools/lib/bpf/bpf.c:796:
+		attr.link_create.tracing_multi.btf_ids_cnt = OPTS_GET(opts, tracing_multi.btf_ids_cnt, 0);

WARNING: line length of 101 exceeds 80 columns
#90: FILE: tools/lib/bpf/libbpf.c:9820:
+static int attach_tracing_multi(const struct bpf_program *prog, long cookie, struct bpf_link **link);

WARNING: line length of 98 exceeds 80 columns
#98: FILE: tools/lib/bpf/libbpf.c:9869:
+	SEC_DEF("fentry.multi+",	TRACING, BPF_TRACE_FENTRY_MULTI, 0, attach_tracing_multi),

WARNING: line length of 97 exceeds 80 columns
#99: FILE: tools/lib/bpf/libbpf.c:9870:
+	SEC_DEF("fexit.multi+",		TRACING, BPF_TRACE_FEXIT_MULTI, 0, attach_tracing_multi),

WARNING: line length of 86 exceeds 80 columns
#108: FILE: tools/lib/bpf/libbpf.c:12247:
+bpf_program__attach_tracing_multi(const struct bpf_program *prog, const char *pattern,

WARNING: line length of 83 exceeds 80 columns
#129: FILE: tools/lib/bpf/libbpf.c:12268:
+		cnt = btf__find_by_glob_kind(prog->obj->btf_vmlinux, BTF_KIND_FUNC,

WARNING: line length of 82 exceeds 80 columns
#145: FILE: tools/lib/bpf/libbpf.c:12284:
+	link_fd = bpf_link_create(prog_fd, 0, prog->expected_attach_type, &lopts);

WARNING: line length of 86 exceeds 80 columns
#148: FILE: tools/lib/bpf/libbpf.c:12287:
+		pr_warn("prog '%s': failed to attach: %s\n", prog->name, errstr(err));

WARNING: line length of 100 exceeds 80 columns
#160: FILE: tools/lib/bpf/libbpf.c:12299:
+static int attach_tracing_multi(const struct bpf_program *prog, long cookie, struct bpf_link **link)

ERROR: space prohibited before that ':' (ctx:WxV)
#204: FILE: tools/lib/bpf/libbpf.h:709:
+	size_t :0;
 	       ^

WARNING: line length of 86 exceeds 80 columns
#210: FILE: tools/lib/bpf/libbpf.h:715:
+bpf_program__attach_tracing_multi(const struct bpf_program *prog, const char *pattern,

total: 1 errors, 11 warnings, 1 checks, 167 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 9ee03ea6ccd5 ("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.