WARNING: line length of 86 exceeds 80 columns
#153: FILE: tools/testing/selftests/bpf/prog_tests/thp_adjust.c:79:
+	addr = mmap(NULL, LEN, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);

WARNING: line length of 90 exceeds 80 columns
#161: FILE: tools/testing/selftests/bpf/prog_tests/thp_adjust.c:87:
+	/* Accessing a single byte within a page is sufficient to trigger a page fault. */

WARNING: unchecked sscanf return value
#240: FILE: tools/testing/selftests/bpf/prog_tests/thp_adjust.c:166:
+			sscanf(line, "THPeligible: %d", &eligible);

total: 0 errors, 3 warnings, 0 checks, 297 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 84bc1e0570b9 ("selftests/bpf: add a simple BPF based THP policy") 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, 3 warnings, 0 checks, 297 lines checked