| commit | dd30ac327481f1663b6526fa9fa078569188b7cc | [log] [tgz] |
|---|---|---|
| author | Horst Hartmann <horsth@linux.vnet.ibm.com> | Thu Feb 17 13:13:59 2011 +0100 |
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | Thu Feb 17 13:13:59 2011 +0100 |
| tree | 7e78bdbafc46bf0e70b89857c29c102676693d74 | |
| parent | 7657e41a0bd16c9d8b3cefe8fd5d6ac3c25ae4bf [diff] |
[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>