CHECK: Please use a blank line after function/struct/union/enum declarations
#49: FILE: include/linux/trace_events.h:834:
 }
+static inline int

WARNING: line length of 89 exceeds 80 columns
#74: FILE: include/uapi/linux/bpf.h:1868:
+				__aligned_u64	btf_ids;	/* addresses to attach */

WARNING: line length of 85 exceeds 80 columns
#75: FILE: include/uapi/linux/bpf.h:1869:
+				__u32		btf_ids_cnt;	/* addresses count */

WARNING: line length of 101 exceeds 80 columns
#102: FILE: kernel/trace/bpf_trace.c:3597:
+#if defined(CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS) && defined(CONFIG_HAVE_SINGLE_FTRACE_DIRECT_OPS)

WARNING: line length of 86 exceeds 80 columns
#178: FILE: kernel/trace/bpf_trace.c:3673:
+		      &bpf_tracing_multi_link_lops, prog, prog->expected_attach_type);

WARNING: line length of 93 exceeds 80 columns
#205: FILE: kernel/trace/bpf_trace.c:3700:
+#endif /* CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS) && CONFIG_HAVE_SINGLE_FTRACE_DIRECT_OPS */

WARNING: line length of 89 exceeds 80 columns
#223: FILE: tools/include/uapi/linux/bpf.h:1868:
+				__aligned_u64	btf_ids;	/* addresses to attach */

WARNING: line length of 85 exceeds 80 columns
#224: FILE: tools/include/uapi/linux/bpf.h:1869:
+				__u32		btf_ids_cnt;	/* addresses count */

total: 0 errors, 7 warnings, 1 checks, 168 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 2558949fbc97 ("bpf: 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.
total: 0 errors, 7 warnings, 1 checks, 168 lines checked