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| author |   Bob Pearson <rpearsonhpe@gmail.com> | 2021-05-27 14:47:46 -0500 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@nvidia.com> | 2021-06-03 15:53:01 -0300 |
| commit | 59daff49f25fbb3197c03c879e23a31ddd23d98f (patch) | |
| tree | 280429a279bac368f0982e47b01c33da32f9bb7c /drivers/infiniband/sw/rxe/rxe_srq.c | |
| parent | Merge branch 'irdma' into rdma.git for-next (diff) | |
| download | linux-dev-59daff49f25fbb3197c03c879e23a31ddd23d98f.tar.xz linux-dev-59daff49f25fbb3197c03c879e23a31ddd23d98f.zip | |
RDMA/rxe: Add a type flag to rxe_queue structs
To create optimal code only want to use smp_load_acquire() and
smp_store_release() for user indices in rxe_queue APIs since kernel
indices are protected by locks which also act as memory barriers. By
adding a type to the queues we can determine which indices need to be
protected.
Link: https://lore.kernel.org/r/20210527194748.662636-2-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_srq.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe_srq.c b/drivers/infiniband/sw/rxe/rxe_srq.c index 41b0d1e11baf..52c5593741ec 100644 --- a/drivers/infiniband/sw/rxe/rxe_srq.c +++ b/drivers/infiniband/sw/rxe/rxe_srq.c @@ -78,6 +78,7 @@ int rxe_srq_from_init(struct rxe_dev *rxe, struct rxe_srq *srq, int err; int srq_wqe_size; struct rxe_queue *q; + enum queue_type type; srq->ibsrq.event_handler = init->event_handler; srq->ibsrq.srq_context = init->srq_context; @@ -91,8 +92,9 @@ int rxe_srq_from_init(struct rxe_dev *rxe, struct rxe_srq *srq, spin_lock_init(&srq->rq.producer_lock); spin_lock_init(&srq->rq.consumer_lock); + type = uresp ? QUEUE_TYPE_FROM_USER : QUEUE_TYPE_KERNEL; q = rxe_queue_init(rxe, &srq->rq.max_wr, - srq_wqe_size); + srq_wqe_size, type); if (!q) { pr_warn("unable to allocate queue for srq\n"); return -ENOMEM; |