CHECK: spaces preferred around that '-' (ctx:VxV)
#53: FILE: tools/testing/selftests/bpf/bpf_experimental.h:612:
+#define __IRQ_MASK(x)	((1UL << (x))-1)
                      	             ^

CHECK: No space is necessary after a cast
#71: FILE: tools/testing/selftests/bpf/bpf_experimental.h:630:
+	return *(int *) bpf_this_cpu_ptr(&__preempt_count);

WARNING: line length of 85 exceeds 80 columns
#79: FILE: tools/testing/selftests/bpf/bpf_experimental.h:638:
+ *	Report whether it is in interrupt context. Only works on the following archs:

CHECK: No space is necessary after a cast
#92: FILE: tools/testing/selftests/bpf/bpf_experimental.h:651:
+	tsk = (void *) bpf_get_current_task_btf();

total: 0 errors, 1 warnings, 3 checks, 58 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 4e0e10f02764 ("selftests/bpf: Introduce experimental bpf_in_interrupt()") 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, 3 checks, 58 lines checked