diff options
| author | Jan Glauber <jang@linux.vnet.ibm.com> | 2011-01-05 12:47:50 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-01-05 12:47:28 +0100 |
| commit | 3d6c76ff32bb9b2ebf6e859855d315eb42e3df50 (patch) | |
| tree | 3a69d4f3023e75fee0bc55ba38ca7a54a8e4760c /drivers/s390/net | |
| parent | [S390] qdio: prevent race for shared indicators (diff) | |
| download | linux-3d6c76ff32bb9b2ebf6e859855d315eb42e3df50.tar.xz linux-3d6c76ff32bb9b2ebf6e859855d315eb42e3df50.zip | |
[S390] qdio: outbound tasklet scan threshold
Introduce a scan treshold for the qdio outbound queues. By setting the
threshold the driver can tell qdio after how much used SBALs qdio
should schedule the outbound tasklet that scans the queue for finished
SBALs. The threshold is specific by the drivers because a
Hipersockets device is much faster in utilizing outbound buffers than a
ZFCP or OSA device.
The default values after how many used SBALs the tasklet should run are:
OSA: > 31 SBALs
Hipersockets: > 7 SBALs
zfcp: > 55 SBALs
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/net')
| -rw-r--r-- | drivers/s390/net/qeth_core_main.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index e6b2df0e73f5..f65320babf71 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -3831,6 +3831,8 @@ static int qeth_qdio_establish(struct qeth_card *card) init_data.int_parm = (unsigned long) card; init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; + init_data.scan_threshold = + (card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32; if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { |