WARNING: line length of 92 exceeds 80 columns
#44: FILE: include/linux/ftrace.h:587:
+static inline int update_ftrace_direct_del(struct ftrace_ops *ops, struct ftrace_hash *hash)

WARNING: line length of 81 exceeds 80 columns
#67: FILE: kernel/trace/ftrace.c:6386:
+static struct ftrace_hash *hash_sub(struct ftrace_hash *a, struct ftrace_hash *b)

WARNING: line length of 86 exceeds 80 columns
#96: FILE: kernel/trace/ftrace.c:6415:
+	struct ftrace_hash *old_direct_functions = NULL, *new_direct_functions = NULL;

WARNING: line length of 86 exceeds 80 columns
#164: FILE: kernel/trace/ftrace.c:6483:
+		call_rcu_tasks(&old_direct_functions->rcu, register_ftrace_direct_cb);

total: 0 errors, 4 warnings, 0 checks, 134 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 5a60cbbf9bdb ("ftrace: Add update_ftrace_direct_del function") 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, 4 warnings, 0 checks, 134 lines checked