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RDMA/core: Track device memory MRs

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[ Upstream commit b47a98efa97889c5b16d17e77eed3dc4500674eb ]

Device memory (DM) are registered as MR during initialization flow, these
MRs were not tracked by resource tracker and had res->valid set as a
false. Update the code to manage them too.

Before this change:
$ ibv_rc_pingpong -j &
$ rdma res show mr <-- shows nothing

After this change:
$ ibv_rc_pingpong -j &
$ rdma res show mr
dev ibp0s9 mrn 0 mrlen 4096 pdn 3 pid 734 comm ibv_rc_pingpong

Fixes: be934cca9e ("IB/uverbs: Add device memory registration ioctl support")
Link: https://lore.kernel.org/r/20201117070148.1974114-2-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Leon Romanovsky 2020-11-17 09:01:46 +02:00 committed by Greg Kroah-Hartman
parent aaaa7a6006
commit deaeb67c9d
1 changed files with 4 additions and 0 deletions
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4
drivers/infiniband/core/uverbs_std_types_mr.c
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@ -33,6 +33,7 @@
#include "rdma_core.h"
#include "uverbs.h"
#include <rdma/uverbs_std_types.h>
#include "restrack.h"
static int uverbs_free_mr(struct ib_uobject *uobject,
enum rdma_remove_reason why,
@ -134,6 +135,9 @@ static int UVERBS_HANDLER(UVERBS_METHOD_DM_MR_REG)(
atomic_inc(&pd->usecnt);
atomic_inc(&dm->usecnt);
rdma_restrack_new(&mr->res, RDMA_RESTRACK_MR);
rdma_restrack_set_name(&mr->res, NULL);
rdma_restrack_add(&mr->res);
uobj->object = mr;
uverbs_finalize_uobj_create(attrs, UVERBS_ATTR_REG_DM_MR_HANDLE);