[NET]: Move Qdisc_class_ops and Qdisc_ops in appropriate sections.

Qdisc_class_ops are const, and Qdisc_ops are mostly read.

Using "const" and "__read_mostly" qualifiers helps to reduce false
sharing.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/sch_gred.c b/net/sched/sch_gred.c
index 3cc6dda..e2bcd66 100644
--- a/net/sched/sch_gred.c
+++ b/net/sched/sch_gred.c
@@ -577,7 +577,7 @@
 	}
 }
 
-static struct Qdisc_ops gred_qdisc_ops = {
+static struct Qdisc_ops gred_qdisc_ops __read_mostly = {
 	.id		=	"gred",
 	.priv_size	=	sizeof(struct gred_sched),
 	.enqueue	=	gred_enqueue,