WARNING: externs should be avoided in .c files
#30: FILE: tools/testing/selftests/bpf/bench.c:496:
+extern const struct bench bench_trig_usermode_count;

total: 0 errors, 1 warnings, 0 checks, 207 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 7b641be3920c ("selftests/bpf: rename and clean up userspace-triggered benchmarks") 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, 1 warnings, 0 checks, 207 lines checked