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rds: Use RCU for the bind lookup searches

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The RDS bind lookups are somewhat expensive in terms of CPU
time and locking overhead.  This commit changes them into a
faster RCU based hash tree instead of the rbtrees they were using
before.

On large NUMA systems it is a significant improvement.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2010-05-11 15:09:45 -07:00
committed by Andy Grover
parent e4c52c98e0
commit 38a4e5e613
4 changed files with 57 additions and 45 deletions
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2
net/rds/ib_rdma.c
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@@ -303,6 +303,8 @@ static struct rds_ib_mr *rds_ib_alloc_fmr(struct rds_ib_device *rds_ibdev)
goto out_no_cigar;
}
memset(ibmr, 0, sizeof(*ibmr));
ibmr->fmr = ib_alloc_fmr(rds_ibdev->pd,
(IB_ACCESS_LOCAL_WRITE |
IB_ACCESS_REMOTE_READ |