Re: e1000 driver 2.6.18 - how to waste processor cycles
flat view
From: David Miller <davem@davemloft.net>
Date: 2006-11-09 02:43:49
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From: "Jesse Brandeburg" <redacted> Date: Wed, 8 Nov 2006 17:01:44 -0800
If you can show that it is faster to use pci_dma_sync_single_for_cpu and friends I'd be glad to take a patch.
The problem is if you don't recycle the buffer and really unmap, you'll flush twice. That can potentially be expensive.