kernel/trace/ftrace.c

1930  * Note that old_hash and new_hash has below meanings
1943 					 struct ftrace_hash *old_hash,
1970 	if (!new_hash || !old_hash)
1980 		in_old = !!ftrace_lookup_ip(old_hash, rec->ip);
2028 		in_old = !!ftrace_lookup_ip(old_hash, rec->ip);
2067 	struct ftrace_hash *old_hash = ops->func_hash->filter_hash;
2069 	if (ftrace_hash_empty(old_hash))
2070 		old_hash = NULL;
2075 	return __ftrace_hash_update_ipmodify(ops, old_hash, new_hash);
2446 		if (hash_contains_ip(ip, &removed_ops->old_hash))
2487 		    hash_contains_ip(ip, &op->old_hash))
2930 				   struct ftrace_ops_hash *old_hash)
2933 	ops->old_hash.filter_hash = old_hash->filter_hash;
2934 	ops->old_hash.notrace_hash = old_hash->notrace_hash;
2936 	ops->old_hash.filter_hash = NULL;
2937 	ops->old_hash.notrace_hash = NULL;
3110 	ops->old_hash.filter_hash = ops->func_hash->filter_hash;
3111 	ops->old_hash.notrace_hash = ops->func_hash->notrace_hash;
3131 	ops->old_hash.filter_hash = NULL;
3132 	ops->old_hash.notrace_hash = NULL;
4349 				   struct ftrace_ops_hash *old_hash)
4357 		ftrace_run_modify_code(ops, FTRACE_UPDATE_CALLS, old_hash);
4372 			ftrace_run_modify_code(op, FTRACE_UPDATE_CALLS, old_hash);
4385 	struct ftrace_hash *old_hash;
4388 	old_hash = *orig_hash;
4394 		free_ftrace_hash_rcu(old_hash);
4805 	struct ftrace_hash *old_hash;
4852 	old_hash = *orig_hash;
4853 	hash = alloc_and_copy_ftrace_hash(FTRACE_HASH_DEFAULT_BITS, old_hash);
4872 			if (ftrace_lookup_ip(old_hash, entry->ip))
4934 			if (ftrace_lookup_ip(old_hash, entry->ip))
4951 	struct ftrace_hash *old_hash;
4996 	old_hash = *orig_hash;
4998 	if (ftrace_hash_empty(old_hash))
5001 	old_hash_ops.filter_hash = old_hash;
5006 	hash = alloc_and_copy_ftrace_hash(FTRACE_HASH_DEFAULT_BITS, old_hash);
6216 	struct ftrace_hash *old_hash, *new_hash;
6250 			old_hash = rcu_dereference_protected(ftrace_graph_hash,
6254 			old_hash = rcu_dereference_protected(ftrace_graph_notrace_hash,
6269 		if (old_hash != EMPTY_HASH)
6272 		free_ftrace_hash(old_hash);