Commit 1cbbcb08 authored Jan 08, 2014 by Vladimir Kondratiev Committed by John W. Linville Jan 09, 2014

wil6210: prefetch head of packet



As soon as skb is ready to be reaped, prefetch 1-st cache line.
This accelerates data access that is performed later, during the
packet classification by the driver and IP stack.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent df2d08ee

drivers/net/wireless/ath/wil6210/txrx.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -21,6 +21,7 @@
		#include <linux/ip.h>
		#include <linux/ipv6.h>
		#include <net/ipv6.h>
		#include <asm/processor.h>

		#include "wil6210.h"
		#include "wmi.h"
		@@ -377,6 +378,8 @@ static struct sk_buff wil_vring_reap_rx(struct wil6210_priv wil,
		}
		skb_trim(skb, dmalen);

		prefetch(skb->data);

		wil_hex_dump_txrx("Rx ", DUMP_PREFIX_OFFSET, 16, 1,
		skb->data, skb_headlen(skb), false);