[PATCH net-next] net: minor optimization in qdisc_qstats_cpu_drop()
From: Eric Dumazet <hidden>
Date: 2016-08-24 17:23:36
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Eric Dumazet <edumazet@google.com> per_cpu_inc() is faster (at least on x86) than per_cpu_ptr(xxx)++; Signed-off-by: Eric Dumazet <edumazet@google.com> --- include/net/sch_generic.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index 0d501779cc68f9426e58da6d039dd64adc937c20..52a2015667b49c8315edbb26513a98d4c677fee5 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)