WARNING: line length of 98 exceeds 80 columns
#52: FILE: tools/testing/selftests/bpf/prog_tests/arena_spin_lock.c:96:
+		printf("%s:SKIP: CONFIG_NR_CPUS exceed the maximum supported by arena spinlock\n",

ERROR: do not use assignment in if condition
#70: FILE: tools/testing/selftests/bpf/progs/arena_spin_lock.c:40:
+	if ((ret = arena_spin_lock_irqsave(&lock, flags))) {

total: 1 errors, 1 warnings, 0 checks, 45 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 b83a42fb7291 ("selftests/bpf: Fix arena_spin_lock selftest failure") 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.