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(parent: 895cf5f) | patch
RDMA/cxgb4: Optimize CQ overflow detection
authorSteve Wise <swise@opengridcomputing.com>
Thu, 20 May 2010 21:57:43 +0000 (16:57 -0500)
committerRoland Dreier <rolandd@cisco.com>
Tue, 25 May 2010 04:08:01 +0000 (21:08 -0700)
commit84172dee05cbce6ae791eac481ef4d8590cda791
treed631f0991e8be72d1d4d1cd2e1ce8d32eb5116e5tree | snapshot
parent895cf5f3d6cb72825919a39ae48a41476a821e65commit | diff
RDMA/cxgb4: Optimize CQ overflow detection

1) save the timestamp flit in the cq when we consume a CQE.

2) always compare the saved flit with the previous entry flit when
   reading the next CQE entry.  If the flits don't compare, then we
   have overflowed.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
drivers/infiniband/hw/cxgb4/cq.c diff | blob | history
drivers/infiniband/hw/cxgb4/t4.h diff | blob | history
John Crispins staging tree