WARNING: line length of 84 exceeds 80 columns
#29: FILE: tools/testing/selftests/bpf/bpf_experimental.h:117:
+ *	0 on success, -EINVAL if prev is not in a list or node is already in a list.

WARNING: line length of 84 exceeds 80 columns
#31: FILE: tools/testing/selftests/bpf/bpf_experimental.h:119:
+extern int bpf_list_add_impl(struct bpf_list_node *prev, struct bpf_list_node *node,

CHECK: extern prototypes should be avoided in .h files
#31: FILE: tools/testing/selftests/bpf/bpf_experimental.h:119:
+extern int bpf_list_add_impl(struct bpf_list_node *prev, struct bpf_list_node *node,

total: 0 errors, 2 warnings, 1 checks, 92 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 8f62fa6362f2 ("selftests/bpf: Add test case for bpf_list_add_impl") 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, 2 warnings, 1 checks, 92 lines checked