WARNING: line length of 81 exceeds 80 columns
#194: FILE: kernel/bpf/syscall.c:3697:
+static void __bpf_tracing_multi_link_release(struct bpf_tracing_multi_link *link)

CHECK: Alignment should match open parenthesis
#237: FILE: kernel/bpf/syscall.c:3740:
+static void bpf_tracing_multi_link_show_fdinfo(const struct bpf_link *link,
+					 struct seq_file *seq)

WARNING: line length of 82 exceeds 80 columns
#306: FILE: kernel/bpf/syscall.c:3809:
+static int bpf_tracing_multi_link_check(const union bpf_attr *attr, u32 **btf_ids,

CHECK: No space is necessary after a cast
#369: FILE: kernel/bpf/syscall.c:3872:
+	link->mods = (struct module **) mods->ptrs;

CHECK: No space is necessary after a cast
#371: FILE: kernel/bpf/syscall.c:3874:
+	link->tgt_btfs = (struct btf **) btfs->ptrs;

CHECK: No space is necessary after a cast
#373: FILE: kernel/bpf/syscall.c:3876:
+	link->tgt_progs = (struct bpf_prog **) progs->ptrs;

WARNING: line length of 87 exceeds 80 columns
#557: FILE: kernel/bpf/trampoline.c:120:
+		 eatype == BPF_TRACE_FENTRY_MULTI || eatype == BPF_TRACE_FEXIT_MULTI ||

WARNING: line length of 83 exceeds 80 columns
#632: FILE: kernel/bpf/verifier.c:23446:
+			   prog->expected_attach_type == BPF_MODIFY_RETURN_MULTI) {

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, 5 warnings, 4 checks, 612 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 774c833d6333 ("bpf: tracing: add multi-link support") 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, 5 warnings, 4 checks, 612 lines checked