CHECK: extern prototypes should be avoided in .h files
#34: FILE: tools/testing/selftests/bpf/bpf_kfuncs.h:88:
+extern int bpf_get_dentry_xattr(struct dentry *dentry, const char *name,

CHECK: Alignment should match open parenthesis
#35: FILE: tools/testing/selftests/bpf/bpf_kfuncs.h:89:
+extern int bpf_get_dentry_xattr(struct dentry *dentry, const char *name,
+			      struct bpf_dynptr *value_ptr) __ksym __weak;

WARNING: line length of 84 exceeds 80 columns
#60: FILE: tools/testing/selftests/bpf/prog_tests/fs_kfuncs.c:60:
+	ASSERT_EQ(skel->bss->found_xattr_from_dentry, 1, "found_xattr_from_dentry");

total: 0 errors, 1 warnings, 2 checks, 95 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 8ec234285fad ("selftests/bpf: Add tests for bpf_get_dentry_xattr") 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, 2 checks, 95 lines checked