WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#93: FILE: tools/testing/selftests/bpf/prog_tests/perf_branches.c:99:
+	for (i = 0; i < 100000000 && !*(volatile int *)&skel->bss->run_cnt; ++i)

total: 0 errors, 1 warnings, 0 checks, 49 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 df808ee8bdf0 ("selftests/bpf: improve reliability of test_perf_branches_no_hw()") 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, 1 warnings, 0 checks, 49 lines checked