IPVS: use pr_err and friends instead of IP_VS_ERR and friends

Since pr_err and friends are used instead of printk there is no point
in keeping IP_VS_ERR and friends.  Furthermore make use of '__func__'
instead of hard coded function names.

Signed-off-by: Hannes Eder <heder@google.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netfilter/ipvs/ip_vs_wrr.c b/net/netfilter/ipvs/ip_vs_wrr.c
index c39ebb6..70ff82cd 100644
--- a/net/netfilter/ipvs/ip_vs_wrr.c
+++ b/net/netfilter/ipvs/ip_vs_wrr.c
@@ -97,7 +97,7 @@
 	 */
 	mark = kmalloc(sizeof(struct ip_vs_wrr_mark), GFP_ATOMIC);
 	if (mark == NULL) {
-		IP_VS_ERR("ip_vs_wrr_init_svc(): no memory\n");
+		pr_err("%s(): no memory\n", __func__);
 		return -ENOMEM;
 	}
 	mark->cl = &svc->destinations;
@@ -144,7 +144,7 @@
 	struct ip_vs_wrr_mark *mark = svc->sched_data;
 	struct list_head *p;
 
-	IP_VS_DBG(6, "ip_vs_wrr_schedule(): Scheduling...\n");
+	IP_VS_DBG(6, "%s(): Scheduling...\n", __func__);
 
 	/*
 	 * This loop will always terminate, because mark->cw in (0, max_weight]