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| author | Benjamin LaHaise <ben.lahaise@neterion.com> | 2009-08-04 06:21:39 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-08-05 16:10:45 -0400 |
| commit | 3f23e436d241ac1cf50a659228a5a0e1e6572c1a (patch) | |
| tree | eca045a10b9d536362f3a4f654da5c740a416e85 /drivers/net/vxge/vxge-main.h | |
| parent | ff1b974cf30b282f90993ab658e59b73c152c0b8 (diff) | |
vxge: prefetch RxD descriptors
This patch prefetches RxD descriptors which helps to lower the latency of a
cache miss in vxge_hw_ring_rxd_next_completed. This lowers the % of CPU
time used by vxge_hw_ring_rxd_next_completed() where the descriptor is
accessed in profiling netperf on a P4 Xeon from 1.5% to 1.0%.
Signed-off-by: Benjamin LaHaise <ben.lahaise@neterion.com>
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/vxge/vxge-main.h')
0 files changed, 0 insertions, 0 deletions