From: Divy Le Ray <divy@chelsio.com>
To: davem@davemloft.net
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
swise@opengridcomputing.com
Subject: [PATCH net-next 4/10] cxgb3: prefetch buffer access in GRO mode
Date: Fri, 13 Mar 2009 00:13:59 -0700 [thread overview]
Message-ID: <20090313071359.21994.26013.stgit@speedy5> (raw)
In-Reply-To: <20090313071343.21994.85719.stgit@speedy5>
From: Divy Le Ray <divy@chelsio.com>
Elmininate a cache miss when accessing the CPL header within
the first aggregated buffer.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
---
drivers/net/cxgb3/sge.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c
index 90f6f82..a482429 100644
--- a/drivers/net/cxgb3/sge.c
+++ b/drivers/net/cxgb3/sge.c
@@ -2029,6 +2029,8 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs,
pci_unmap_single(adap->pdev, pci_unmap_addr(sd, dma_addr),
fl->buf_size, PCI_DMA_FROMDEVICE);
+ prefetch(&qs->lro_frag_tbl);
+
rx_frag += nr_frags;
rx_frag->page = sd->pg_chunk.page;
rx_frag->page_offset = sd->pg_chunk.offset + offset;
@@ -2997,6 +2999,7 @@ int t3_sge_alloc_qset(struct adapter *adapter, unsigned int id, int nports,
V_NEWTIMER(q->rspq.holdoff_tmr));
mod_timer(&q->tx_reclaim_timer, jiffies + TX_RECLAIM_PERIOD);
+
return 0;
err_unlock:
next prev parent reply other threads:[~2009-03-13 7:14 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-13 7:13 [PATCH net-next 1/10] cxgb3: ring rx door bell less frequently Divy Le Ray
2009-03-13 7:13 ` [PATCH net-next 2/10] cxgb3: release page ref on mapping error Divy Le Ray
2009-03-13 7:13 ` [PATCH net-next 3/10] cxgb3: fix skb truesize in jumbo mode Divy Le Ray
2009-03-13 7:13 ` Divy Le Ray [this message]
2009-03-13 7:14 ` [PATCH net-next 5/10] cxgb3: separate TX and RX reclaim handlers Divy Le Ray
2009-03-13 7:14 ` [PATCH net-next 6/10] cxgb3: disable high freq non-data interrupts Divy Le Ray
2009-03-13 7:14 ` [PATCH net-next 7/10] cxgb3: Update Rev3 mac workaround Divy Le Ray
2009-03-13 7:14 ` [PATCH net-next 8/10] cxgb3: detect mac link faults Divy Le Ray
2009-03-13 7:14 ` [PATCH net-next 9/10] cxgb3: update FW Divy Le Ray
2009-03-13 7:14 ` [PATCH net-next 10/10] cxgb3: update driver version Divy Le Ray
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