RDMA/rxe: Replace rxe_map and rxe_phys_buf by xarray

Browse source

Replace struct rxe-phys_buf and struct rxe_map by struct xarray
in rxe_verbs.h. This allows using rcu locking on reads for
the memory maps stored in each mr.

This is based off of a sketch of a patch from Jason Gunthorpe in the
link below. Some changes were needed to make this work. It applies
cleanly to the current for-next and passes the pyverbs, perftest
and the same blktests test cases which run today.

Link: https://lore.kernel.org/r/20230119235936.19728-7-rpearsonhpe@gmail.com
Link: https://lore.kernel.org/linux-rdma/Y3gvZr6%2FNCii9Avy@nvidia.com/
Co-developed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

...

This commit is contained in:

Bob Pearson 2023-01-19 17:59:37 -06:00 • committed by Jason Gunthorpe

parent 325a7eb851

commit 592627ccbd

3 changed files with 254 additions and 302 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

6

drivers/infiniband/sw/rxe/rxe_loc.h

View file

539

drivers/infiniband/sw/rxe/rxe_mr.c

View file

21

drivers/infiniband/sw/rxe/rxe_verbs.h

View file