CHECK: extern prototypes should be avoided in .h files
#26: FILE: tools/testing/selftests/bpf/bpf_experimental.h:586:
+extern int bpf_wq_set_callback(struct bpf_wq *wq,

CHECK: Alignment should match open parenthesis
#27: FILE: tools/testing/selftests/bpf/bpf_experimental.h:587:
+extern int bpf_wq_set_callback(struct bpf_wq *wq,
+		int (callback_fn)(void *map, int *key, void *value),

total: 0 errors, 0 warnings, 2 checks, 14 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 46c823510479 ("selftests/bpf: update bpf_wq_set_callback macro") 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, 0 warnings, 2 checks, 14 lines checked