RDMA/mlx5: Replace cache list with Xarray

Browse source

The Xarray allows us to store the cached mkeys in memory efficient way.

Entries are reserved in the Xarray using xa_cmpxchg before calling to the
upcoming callbacks to avoid allocations in interrupt context.  The
xa_cmpxchg can sleep when using GFP_KERNEL, so we call it in a loop to
ensure one reserved entry for each process trying to reserve.

Link: https://lore.kernel.org/r/20220726071911.122765-3-michaelgur@nvidia.com
Signed-off-by: Aharon Landau <aharonl@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

...

This commit is contained in:

Aharon Landau 2022-07-26 10:19:08 +03:00 • committed by Jason Gunthorpe

parent 17ae355926

commit 86457a92df

2 changed files with 152 additions and 88 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

14

drivers/infiniband/hw/mlx5/mlx5_ib.h

View file

226

drivers/infiniband/hw/mlx5/mr.c

View file