From: David Ward <david.ward@ll.mit.edu>
Date: Thu, 13 Sep 2012 05:22:33 +0000 (+0000)
Subject: net_sched: gred: eliminate redundant DP prio comparisons
X-Git-Tag: upstream/snapshot3+hdmi~6711^2~11
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c22e464022f935b0cbd8724b1d99d800d49518a9;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

net_sched: gred: eliminate redundant DP prio comparisons

Each pair of DPs only needs to be compared once when searching for
a non-unique prio value.

Signed-off-by: David Ward <david.ward@ll.mit.edu>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.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 fca73cd..e19d4eb 100644
--- a/net/sched/sch_gred.c
+++ b/net/sched/sch_gred.c
@@ -102,9 +102,8 @@ static inline int gred_wred_mode_check(struct Qdisc *sch)
 		if (q == NULL)
 			continue;
 
-		for (n = 0; n < table->DPs; n++)
-			if (table->tab[n] && table->tab[n] != q &&
-			    table->tab[n]->prio == q->prio)
+		for (n = i + 1; n < table->DPs; n++)
+			if (table->tab[n] && table->tab[n]->prio == q->prio)
 				return 1;
 	}