From: Eric Dumazet <edumazet@google.com>
Date: Wed, 24 Aug 2016 17:23:34 +0000 (-0700)
Subject: net: minor optimization in qdisc_qstats_cpu_drop()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=eb60a8ddf3c38959cc73821bec5335bed85e0200;p=linux-beck.git

net: minor optimization in qdisc_qstats_cpu_drop()

per_cpu_inc() is faster (at least on x86) than per_cpu_ptr(xxx)++;

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index 0d501779cc68..52a2015667b4 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -592,7 +592,7 @@ static inline void qdisc_qstats_drop(struct Qdisc *sch)
 
 static inline void qdisc_qstats_cpu_drop(struct Qdisc *sch)
 {
-	qstats_drop_inc(this_cpu_ptr(sch->cpu_qstats));
+	this_cpu_inc(sch->cpu_qstats->drops);
 }
 
 static inline void qdisc_qstats_overlimit(struct Qdisc *sch)