WARNING: line length of 84 exceeds 80 columns
#86: FILE: tools/lib/bpf/libbpf.c:12844:
+static bool is_trace_valid(const struct btf *btf, int btf_type_id, const char *name)

CHECK: Please use a blank line after function/struct/union/enum declarations
#220: FILE: tools/lib/bpf/libbpf.h:854:
 };
+#define bpf_trace_multi_opts__last_field attach_tracing

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, 2 warnings, 1 checks, 166 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 6475a1c5f5ae ("libbpf: add skip_invalid and attach_tracing for 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, 2 warnings, 1 checks, 166 lines checked