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authorMaciej Sosnowski <maciej.sosnowski@intel.com>2008-07-22 17:30:57 -0700
committerDan Williams <dan.j.williams@intel.com>2008-07-22 17:30:57 -0700
commit16a37acaaf4aaa631ba3f83710ed6cdb1a597520 (patch)
tree5826c763c70dc6b798c0d12216a80f4596dec284 /drivers/dma/ioat_dma.c
parent09177e85d6a0bffac8b55afd28ed8b82bd873f0b (diff)
downloadop-kernel-dev-16a37acaaf4aaa631ba3f83710ed6cdb1a597520.zip
op-kernel-dev-16a37acaaf4aaa631ba3f83710ed6cdb1a597520.tar.gz
I/OAT: tcp_dma_copybreak default value dependent on I/OAT version
I/OAT DMA performance tuning showed different optimal values of tcp_dma_copybreak for different I/OAT versions (4096 for 1.2 and 2048 for 2.0). This patch lets ioatdma driver set tcp_dma_copybreak value according to these results. [dan.j.williams@intel.com: remove some ifdefs] Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma/ioat_dma.c')
-rw-r--r--drivers/dma/ioat_dma.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/dma/ioat_dma.c b/drivers/dma/ioat_dma.c
index da57296..ece5a0e 100644
--- a/drivers/dma/ioat_dma.c
+++ b/drivers/dma/ioat_dma.c
@@ -1581,6 +1581,8 @@ struct ioatdma_device *ioat_dma_probe(struct pci_dev *pdev,
if (err)
goto err_self_test;
+ ioat_set_tcp_copy_break(device);
+
dma_async_device_register(&device->common);
INIT_DELAYED_WORK(&device->work, ioat_dma_chan_watchdog);
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