a93b8ec1df1f0ad75d036dbc0fdef2e0ccb7be02
author Jan Glauber <jang@linux.vnet.ibm.com> 1267220256 +0100
committer Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> 1267220250 +0100

[S390] qdio: account processed SBAL during queue scan

Add counters for the number of processed SBALs. The numbers summarize
how many SBALs were processed at each queue scan and indicate the
utilization of the queue. Furthermore the number of unsuccessfull
queue scans, SBAL errors and the total number of processed
SBALs are accounted.

Also regroup struct qdio_q to move read-mostly and write-mostly data
into different cachelines.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
P