tree 7e78bdbafc46bf0e70b89857c29c102676693d74
parent 7657e41a0bd16c9d8b3cefe8fd5d6ac3c25ae4bf
author Horst Hartmann <horsth@linux.vnet.ibm.com> 1297944839 +0100
committer Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> 1297944839 +0100

[S390] net: provide architecture specific NET_SKB_PAD

NET_SKB_PAD has been increased from 32 to 64 and later to
max(32, L1_CACHE_BYTES). This led to a 25% throughput decrease for
streaming workloads accompanied by a 37% CPU cost increase on s390.
Define a architecture specific NET_SKB_PAD with the old value of 32.

Signed-off-by: Horst Hartmann <horsth@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>