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| author |   Jason Gunthorpe <jgg@mellanox.com> | 2019-10-09 13:09:32 -0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2019-10-28 16:41:14 -0300 |
| commit | 5256edcb98a14b11409a2d323f56a70a8b366363 (patch) | |
| tree | 45b6a723c59bc1f7ff6511c266375023b2095732 /drivers/infiniband/hw/mlx5/main.c | |
| parent | RDMA/mlx5: Avoid double lookups on the pagefault path (diff) | |
| download | linux-dev-5256edcb98a14b11409a2d323f56a70a8b366363.tar.xz linux-dev-5256edcb98a14b11409a2d323f56a70a8b366363.zip | |
RDMA/mlx5: Rework implicit ODP destroy
Use SRCU in a sensible way by removing all MRs in the implicit tree from
the two xarrays (the update operation), then a synchronize, followed by a
normal single threaded teardown.
This is only a little unusual from the normal pattern as there can still
be some work pending in the unbound wq that may also require a workqueue
flush. This is tracked with a single atomic, consolidating the redundant
existing atomics and wait queue.
For understand-ability the entire ODP implicit create/destroy flow now
largely exists in a single pair of functions within odp.c, with a few
support functions for tearing down an unused child.
Link: https://lore.kernel.org/r/20191009160934.3143-13-jgg@ziepe.ca
Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/main.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 4692c37b057c..add24b628900 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -6146,8 +6146,6 @@ static void mlx5_ib_stage_init_cleanup(struct mlx5_ib_dev *dev) { mlx5_ib_cleanup_multiport_master(dev); WARN_ON(!xa_empty(&dev->odp_mkeys)); - if (IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING)) - srcu_barrier(&dev->odp_srcu); cleanup_srcu_struct(&dev->odp_srcu); WARN_ON(!xa_empty(&dev->sig_mrs)); |