Revert "audit: move kaudit thread start from auditd registration to kaudit init"

This reverts commit 6ff5e45985c2fcb97947818f66d1eeaf9d6600b2.

Conflicts:
	kernel/audit.c

This patch was starting a kthread for all the time.  Since the follow on
patches that required it didn't get finished in 3.10 time, we shouldn't
ship this change in 3.10.

Signed-off-by: Eric Paris <eparis@redhat.com>

kernel/audit.c

@@ -644,6 +644,16 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 	if (err)
 		return err;
 
+	/* As soon as there's any sign of userspace auditd,
+	 * start kauditd to talk to it */
+	if (!kauditd_task)
+		kauditd_task = kthread_run(kauditd_thread, NULL, "kauditd");
+	if (IS_ERR(kauditd_task)) {
+		err = PTR_ERR(kauditd_task);
+		kauditd_task = NULL;
+		return err;
+	}
+
 	seq  = nlh->nlmsg_seq;
 	data = nlmsg_data(nlh);
 
@@ -895,10 +905,6 @@ static int __init audit_init(void)
 	else
 		audit_sock->sk_sndtimeo = MAX_SCHEDULE_TIMEOUT;
 
-	kauditd_task = kthread_run(kauditd_thread, NULL, "kauditd");
-	if (IS_ERR(kauditd_task))
-		return PTR_ERR(kauditd_task);
-
 	skb_queue_head_init(&audit_skb_queue);
 	skb_queue_head_init(&audit_skb_hold_queue);
 	audit_initialized = AUDIT_INITIALIZED;