WARNING: externs should be avoided in .c files
#26: FILE: tools/testing/selftests/bpf/bench.c:513:
+extern const struct bench bench_trig_fentry_multi;

WARNING: externs should be avoided in .c files
#27: FILE: tools/testing/selftests/bpf/bench.c:514:
+extern const struct bench bench_trig_fentry_multi_all;

WARNING: externs should be avoided in .c files
#29: FILE: tools/testing/selftests/bpf/bench.c:516:
+extern const struct bench bench_trig_fexit_multi;

WARNING: externs should be avoided in .c files
#31: FILE: tools/testing/selftests/bpf/bench.c:518:
+extern const struct bench bench_trig_fmodret_multi;

WARNING: line length of 84 exceeds 80 columns
#59: FILE: tools/testing/selftests/bpf/benchs/bench_trigger.c:232:
+	bpf_program__set_autoload(ctx.skel->progs.bench_trigger_fentry_multi, true);

CHECK: No space is necessary after a cast
#93: FILE: tools/testing/selftests/bpf/benchs/bench_trigger.c:266:
+	opts.syms = (const char **) syms;

WARNING: line length of 83 exceeds 80 columns
#114: FILE: tools/testing/selftests/bpf/benchs/bench_trigger.c:288:
+	bpf_program__set_autoload(ctx.skel->progs.bench_trigger_fexit_multi, true);

WARNING: line length of 85 exceeds 80 columns
#131: FILE: tools/testing/selftests/bpf/benchs/bench_trigger.c:310:
+	bpf_program__set_autoload(ctx.skel->progs.bench_trigger_fmodret_multi, true);

WARNING: line length of 83 exceeds 80 columns
#134: FILE: tools/testing/selftests/bpf/benchs/bench_trigger.c:313:
+	ctx.driver_prog_fd = bpf_program__fd(ctx.skel->progs.trigger_driver_kfunc);

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, 9 warnings, 1 checks, 169 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 da647f6f98f6 ("selftests/bpf: add bench tests 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, 9 warnings, 1 checks, 169 lines checked