diff options
| author | Mike Marciniszyn | 2011-12-23 17:12:10 +0100 |
|---|---|---|
| committer | Roland Dreier | 2012-01-04 05:54:01 +0100 |
| commit | 8d4548f2b7407f7212f71831bb7b457ceb752709 (patch) | |
| tree | ad1fb9783cccfbe803eeae77811f177659f9fd3d /drivers/infiniband/hw/qib/qib_iba7322.c | |
| parent | IB/qib: Optimize locking for get_txreq() (diff) | |
| download | kernel-qcow2-linux-8d4548f2b7407f7212f71831bb7b457ceb752709.tar.gz kernel-qcow2-linux-8d4548f2b7407f7212f71831bb7b457ceb752709.tar.xz kernel-qcow2-linux-8d4548f2b7407f7212f71831bb7b457ceb752709.zip | |
IB/qib: Default some module parameters optimally
Minimize the need for users to have to set module parameters to get
good performance.
The following two parameters are changed:
- rcvhdrcnt to twice the rcvegrcnt
- pcie_caps=0x51
The rcvhdrcnt at twice the egrcount allows the preemptive NAK code
during reception to function in 100% of the cases rather than a sender
jiffies-based timeout.
The pcie_caps default of 0x51 will set the proposed MaxPayload and
MaxReceiveReqest to 256 and 4096 respectively. The capabilities on
the root complex will be used to limit those values.
Reviewed-by: Ram Vepa <ram.vepa@qlogic.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw/qib/qib_iba7322.c')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_iba7322.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c index e22735402649..41e92089e41b 100644 --- a/drivers/infiniband/hw/qib/qib_iba7322.c +++ b/drivers/infiniband/hw/qib/qib_iba7322.c @@ -3603,7 +3603,7 @@ static void qib_7322_config_ctxts(struct qib_devdata *dd) if (qib_rcvhdrcnt) dd->rcvhdrcnt = max(dd->cspec->rcvegrcnt, qib_rcvhdrcnt); else - dd->rcvhdrcnt = max(dd->cspec->rcvegrcnt, + dd->rcvhdrcnt = 2 * max(dd->cspec->rcvegrcnt, dd->num_pports > 1 ? 1024U : 2048U); } |