CHECK: Please use a blank line after function/struct/union/enum declarations
#62: FILE: include/linux/bpf.h:1504:
 }
+int bpf_gtrampoline_link_prog(struct bpf_gtramp_link *link)

CHECK: Please use a blank line after function/struct/union/enum declarations
#66: FILE: include/linux/bpf.h:1508:
+}
+int bpf_gtrampoline_unlink_prog(struct bpf_gtramp_link *link)

WARNING: line length of 98 exceeds 80 columns
#123: FILE: kernel/bpf/trampoline.c:654:
+#if defined(CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS) && defined(CONFIG_ARCH_HAS_BPF_GLOBAL_CALLER)

WARNING: line length of 81 exceeds 80 columns
#302: FILE: kernel/bpf/trampoline.c:1297:
+		global_tr->fops = kzalloc(sizeof(struct ftrace_ops), GFP_KERNEL);

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, 3 warnings, 2 checks, 278 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 a718a6a95cbe ("bpf: introduce bpf_gtramp_link") 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, 3 warnings, 2 checks, 278 lines checked