diff options
| author | Don Fry <pcnet32@verizon.net> | 2007-03-06 03:13:09 +0100 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-03-06 12:14:54 +0100 |
| commit | b2cbbd8e0e8093fbf115ac2669482b016d781c78 (patch) | |
| tree | 04d96724cf39fb65e7209da608fcda0f22d14666 /arch | |
| parent | __devinit & __devexit cleanups for de2104x driver (diff) | |
| download | linux-b2cbbd8e0e8093fbf115ac2669482b016d781c78.tar.xz linux-b2cbbd8e0e8093fbf115ac2669482b016d781c78.zip | |
pcnet32: Fix PCnet32 performance bug on non-coherent architecutres
The PCnet32 driver always passed the the size of the largest possible packet
to the pci_dma_sync_single_for_cpu and pci_dma_sync_single_for_device.
This results in a fairly large "colateral damage" in the caches and makes
the flush operation itself much slower. On a system with a 40MHz CPU this
patch increases network bandwidth by about 12%.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Don Fry <pcnet32@verizon.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions