CHECK: Prefer using the BIT macro
#36: FILE: tools/testing/selftests/bpf/bpf_experimental.h:613:
+#define SOFTIRQ_OFFSET	(1UL << SOFTIRQ_SHIFT)

CHECK: No space is necessary after a cast
#64: FILE: tools/testing/selftests/bpf/bpf_experimental.h:672:
+	tsk = (void *) bpf_get_current_task_btf();

CHECK: No space is necessary after a cast
#77: FILE: tools/testing/selftests/bpf/bpf_experimental.h:685:
+	tsk = (void *) bpf_get_current_task_btf();

total: 0 errors, 0 warnings, 3 checks, 48 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 d36e43ad9992 ("selftests/bpf: Introduce execution context detection helpers") 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, 0 warnings, 3 checks, 48 lines checked