CHECK: Concatenated strings should use spaces between elements
#112: FILE: tools/testing/selftests/bpf/prog_tests/memcg_ops.c:45:
+	if (!ASSERT_GE(ret, 0, "create_and_get_cgroup "CG_DIR))

CHECK: Concatenated strings should use spaces between elements
#127: FILE: tools/testing/selftests/bpf/prog_tests/memcg_ops.c:60:
+	if (!ASSERT_GE(ret, 0, "create_and_get_cgroup "CG_HIGH_DIR))

CHECK: Concatenated strings should use spaces between elements
#139: FILE: tools/testing/selftests/bpf/prog_tests/memcg_ops.c:72:
+	if (!ASSERT_GE(ret, 0, "create_and_get_cgroup "CG_LOW_DIR))

CHECK: Unnecessary parentheses around 'ctx->item != PGFAULT'
#652: FILE: tools/testing/selftests/bpf/progs/memcg_ops.c:44:
+	if (ctx->id != local_config.high_cgroup_id ||
+	    (ctx->item != PGFAULT))

total: 0 errors, 0 warnings, 4 checks, 673 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 2fa56e6583f7 ("selftests/bpf: Add tests for memcg_bpf_ops") 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, 4 checks, 673 lines checked