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| author |   Hans Westgaard Ry <hans.westgaard.ry@oracle.com> | 2020-01-15 14:43:40 +0200 |
|---|---|---|
| committer |   Leon Romanovsky <leonro@mellanox.com> | 2020-01-18 11:48:19 +0200 |
| commit | b2dfc6765e45a3154800333234e4952b5412d792 (patch) | |
| tree | 39e0f83ba33e8c1ed102df74397b3bc5db859e68 /net | |
| parent | net/rds: Handle ODP mr registration/unregistration (diff) | |
| download | linux-dev-b2dfc6765e45a3154800333234e4952b5412d792.tar.xz linux-dev-b2dfc6765e45a3154800333234e4952b5412d792.zip | |
net/rds: Use prefetch for On-Demand-Paging MR
Try prefetching pages when using On-Demand-Paging MR using
ib_advise_mr.
Signed-off-by: Hans Westgaard Ry <hans.westgaard.ry@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/rds/ib_rdma.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c index ea4d7daec251..b34b24e237f8 100644 --- a/net/rds/ib_rdma.c +++ b/net/rds/ib_rdma.c @@ -575,6 +575,7 @@ void *rds_ib_get_mr(struct scatterlist *sg, unsigned long nents, (IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_READ | IB_ACCESS_REMOTE_WRITE | IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_ON_DEMAND); + struct ib_sge sge = {}; struct ib_mr *ib_mr; if (!rds_ibdev->odp_capable) { @@ -602,6 +603,14 @@ void *rds_ib_get_mr(struct scatterlist *sg, unsigned long nents, } ibmr->u.mr = ib_mr; ibmr->odp = 1; + + sge.addr = virt_addr; + sge.length = length; + sge.lkey = ib_mr->lkey; + + ib_advise_mr(rds_ibdev->pd, + IB_UVERBS_ADVISE_MR_ADVICE_PREFETCH_WRITE, + IB_UVERBS_ADVISE_MR_FLAG_FLUSH, &sge, 1); return ibmr; } |