WARNING: line length of 110 exceeds 80 columns
#48: FILE: tools/lib/bpf/bpf.c:803:
+		attr.link_create.tracing_multi.btf_ids = ptr_to_u64(OPTS_GET(opts, tracing_multi.btf_ids, 0));

WARNING: line length of 110 exceeds 80 columns
#49: FILE: tools/lib/bpf/bpf.c:804:
+		attr.link_create.tracing_multi.tgt_fds = ptr_to_u64(OPTS_GET(opts, tracing_multi.tgt_fds, 0));

WARNING: line length of 110 exceeds 80 columns
#50: FILE: tools/lib/bpf/bpf.c:805:
+		attr.link_create.tracing_multi.cookies = ptr_to_u64(OPTS_GET(opts, tracing_multi.cookies, 0));

WARNING: line length of 90 exceeds 80 columns
#51: FILE: tools/lib/bpf/bpf.c:806:
+		attr.link_create.tracing_multi.cnt = OPTS_GET(opts, tracing_multi.cnt, 0);

WARNING: line length of 86 exceeds 80 columns
#103: FILE: tools/lib/bpf/libbpf.c:7425:
+	if ((def & (SEC_ATTACH_BTF | SEC_ATTACH_BTF_MULTI)) && !prog->attach_btf_id) {

WARNING: line length of 85 exceeds 80 columns
#128: FILE: tools/lib/bpf/libbpf.c:7459:
+			err = libbpf_find_attach_btf_id(prog, first_tgt, &btf_obj_fd,

WARNING: line length of 87 exceeds 80 columns
#132: FILE: tools/lib/bpf/libbpf.c:7463:
+			err = libbpf_find_attach_btf_id(prog, attach_name, &btf_obj_fd,

WARNING: line length of 99 exceeds 80 columns
#143: FILE: tools/lib/bpf/libbpf.c:9535:
+static int attach_trace_multi(const struct bpf_program *prog, long cookie, struct bpf_link **link);

WARNING: line length of 97 exceeds 80 columns
#151: FILE: tools/lib/bpf/libbpf.c:9582:
+	SEC_DEF("tp_btf+",		TRACING, BPF_TRACE_RAW_TP, SEC_ATTACH_BTF, attach_trace),

WARNING: line length of 115 exceeds 80 columns
#152: FILE: tools/lib/bpf/libbpf.c:9583:
+	SEC_DEF("fentry.multi+",	TRACING, BPF_TRACE_FENTRY_MULTI, SEC_ATTACH_BTF_MULTI, attach_trace_multi),

WARNING: line length of 116 exceeds 80 columns
#153: FILE: tools/lib/bpf/libbpf.c:9584:
+	SEC_DEF("fmod_ret.multi+",	TRACING, BPF_MODIFY_RETURN_MULTI, SEC_ATTACH_BTF_MULTI, attach_trace_multi),

WARNING: line length of 114 exceeds 80 columns
#154: FILE: tools/lib/bpf/libbpf.c:9585:
+	SEC_DEF("fexit.multi+",		TRACING, BPF_TRACE_FEXIT_MULTI, SEC_ATTACH_BTF_MULTI, attach_trace_multi),

WARNING: line length of 131 exceeds 80 columns
#155: FILE: tools/lib/bpf/libbpf.c:9586:
+	SEC_DEF("fentry.multi.s+",	TRACING, BPF_TRACE_FENTRY_MULTI, SEC_ATTACH_BTF_MULTI | SEC_SLEEPABLE, attach_trace_multi),

WARNING: line length of 132 exceeds 80 columns
#156: FILE: tools/lib/bpf/libbpf.c:9587:
+	SEC_DEF("fmod_ret.multi.s+",	TRACING, BPF_MODIFY_RETURN_MULTI, SEC_ATTACH_BTF_MULTI | SEC_SLEEPABLE, attach_trace_multi),

WARNING: line length of 130 exceeds 80 columns
#157: FILE: tools/lib/bpf/libbpf.c:9588:
+	SEC_DEF("fexit.multi.s+",	TRACING, BPF_TRACE_FEXIT_MULTI, SEC_ATTACH_BTF_MULTI | SEC_SLEEPABLE, attach_trace_multi),

WARNING: line length of 85 exceeds 80 columns
#165: FILE: tools/lib/bpf/libbpf.c:12823:
+struct bpf_link *bpf_program__attach_trace_multi_opts(const struct bpf_program *prog,

WARNING: line length of 94 exceeds 80 columns
#166: FILE: tools/lib/bpf/libbpf.c:12824:
+						      const struct bpf_trace_multi_opts *opts)

CHECK: multiple assignments should be avoided
#199: FILE: tools/lib/bpf/libbpf.c:12857:
+			btf_obj_fd = btf_type_id = 0;

WARNING: line length of 81 exceeds 80 columns
#202: FILE: tools/lib/bpf/libbpf.c:12860:
+					 prog->expected_attach_type, &btf_obj_fd,

CHECK: Alignment should match open parenthesis
#202: FILE: tools/lib/bpf/libbpf.c:12860:
+			err = find_kernel_btf_id(prog->obj, opts->syms[i],
+					 prog->expected_attach_type, &btf_obj_fd,

WARNING: line length of 95 exceeds 80 columns
#226: FILE: tools/lib/bpf/libbpf.c:12884:
+	pfd = bpf_link_create(prog_fd, 0, bpf_program__expected_attach_type(prog), &link_opts);

WARNING: line length of 84 exceeds 80 columns
#230: FILE: tools/lib/bpf/libbpf.c:12888:
+			prog->name, libbpf_strerror_r(pfd, errmsg, sizeof(errmsg)));

WARNING: line length of 98 exceeds 80 columns
#245: FILE: tools/lib/bpf/libbpf.c:12903:
+static int attach_trace_multi(const struct bpf_program *prog, long cookie, struct bpf_link **link)

CHECK: Please use a blank line after function/struct/union/enum declarations
#319: FILE: tools/lib/bpf/libbpf.h:850:
+};
+#define bpf_trace_multi_opts__last_field cnt

WARNING: From:/Signed-off-by: email address mismatch: 'From: Menglong Dong <menglong8.dong@gmail.com>' != 'Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>'

total: 0 errors, 22 warnings, 3 checks, 280 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 64ad041680bd ("libbpf: support tracing_multi") 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, 22 warnings, 3 checks, 280 lines checked