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IB/core: Get rid of redundant verb ib_destroy_mr 

This was added in a thought of uniting all mr allocation
and deallocation routines but the fact is we have a single
deallocation routine already, ib_dereg_mr.

And, move mlx5_ib_destroy_mr specific logic into mlx5_ib_dereg_mr
(includes only signature stuff for now).

And, fixup the only callers (iser/isert) accordingly.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Sagi Grimberg 2015-07-30 10:32:34 +03:00 committed by Doug Ledford
parent be688195bd
commit 8b91ffc1cf
7 changed files with 15 additions and 61 deletions
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17
drivers/infiniband/core/verbs.c
View File

@ -1257,23 +1257,6 @@ struct ib_mr *ib_create_mr(struct ib_pd *pd,
}
EXPORT_SYMBOL(ib_create_mr);
int ib_destroy_mr(struct ib_mr *mr)
{
struct ib_pd *pd;
int ret;
if (atomic_read(&mr->usecnt))
return -EBUSY;
pd = mr->pd;
ret = mr->device->destroy_mr(mr);
if (!ret)
atomic_dec(&pd->usecnt);
return ret;
}
EXPORT_SYMBOL(ib_destroy_mr);
struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len)
{
struct ib_mr *mr;

1
drivers/infiniband/hw/mlx5/main.c
View File

@ -1499,7 +1499,6 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
dev->ib_dev.get_dma_mr = mlx5_ib_get_dma_mr;
dev->ib_dev.reg_user_mr = mlx5_ib_reg_user_mr;
dev->ib_dev.dereg_mr = mlx5_ib_dereg_mr;
dev->ib_dev.destroy_mr = mlx5_ib_destroy_mr;
dev->ib_dev.attach_mcast = mlx5_ib_mcg_attach;
dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach;
dev->ib_dev.process_mad = mlx5_ib_process_mad;

1
drivers/infiniband/hw/mlx5/mlx5_ib.h
View File

@ -573,7 +573,6 @@ struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
int mlx5_ib_update_mtt(struct mlx5_ib_mr *mr, u64 start_page_index,
int npages, int zap);
int mlx5_ib_dereg_mr(struct ib_mr *ibmr);
int mlx5_ib_destroy_mr(struct ib_mr *ibmr);
struct ib_mr *mlx5_ib_create_mr(struct ib_pd *pd,
struct ib_mr_init_attr *mr_init_attr);
struct ib_mr *mlx5_ib_alloc_fast_reg_mr(struct ib_pd *pd,

43
drivers/infiniband/hw/mlx5/mr.c
View File

@ -1170,6 +1170,19 @@ static int clean_mr(struct mlx5_ib_mr *mr)
int umred = mr->umred;
int err;
if (mr->sig) {
if (mlx5_core_destroy_psv(dev->mdev,
mr->sig->psv_memory.psv_idx))
mlx5_ib_warn(dev, "failed to destroy mem psv %d\n",
mr->sig->psv_memory.psv_idx);
if (mlx5_core_destroy_psv(dev->mdev,
mr->sig->psv_wire.psv_idx))
mlx5_ib_warn(dev, "failed to destroy wire psv %d\n",
mr->sig->psv_wire.psv_idx);
kfree(mr->sig);
mr->sig = NULL;
}
if (!umred) {
err = destroy_mkey(dev, mr);
if (err) {
@ -1317,36 +1330,6 @@ struct ib_mr *mlx5_ib_create_mr(struct ib_pd *pd,
return ERR_PTR(err);
}
int mlx5_ib_destroy_mr(struct ib_mr *ibmr)
{
struct mlx5_ib_dev *dev = to_mdev(ibmr->device);
struct mlx5_ib_mr *mr = to_mmr(ibmr);
int err;
if (mr->sig) {
if (mlx5_core_destroy_psv(dev->mdev,
mr->sig->psv_memory.psv_idx))
mlx5_ib_warn(dev, "failed to destroy mem psv %d\n",
mr->sig->psv_memory.psv_idx);
if (mlx5_core_destroy_psv(dev->mdev,
mr->sig->psv_wire.psv_idx))
mlx5_ib_warn(dev, "failed to destroy wire psv %d\n",
mr->sig->psv_wire.psv_idx);
kfree(mr->sig);
}
err = destroy_mkey(dev, mr);
if (err) {
mlx5_ib_warn(dev, "failed to destroy mkey 0x%x (%d)\n",
mr->mmr.key, err);
return err;
}
kfree(mr);
return err;
}
struct ib_mr *mlx5_ib_alloc_fast_reg_mr(struct ib_pd *pd,
int max_page_list_len)
{

2
drivers/infiniband/ulp/iser/iser_verbs.c
View File

@ -334,7 +334,7 @@ iser_free_pi_ctx(struct iser_pi_context *pi_ctx)
{
ib_free_fast_reg_page_list(pi_ctx->prot_frpl);
ib_dereg_mr(pi_ctx->prot_mr);
ib_destroy_mr(pi_ctx->sig_mr);
ib_dereg_mr(pi_ctx->sig_mr);
kfree(pi_ctx);
}

2
drivers/infiniband/ulp/isert/ib_isert.c
View File

@ -491,7 +491,7 @@ isert_conn_free_fastreg_pool(struct isert_conn *isert_conn)
if (fr_desc->pi_ctx) {
ib_free_fast_reg_page_list(fr_desc->pi_ctx->prot_frpl);
ib_dereg_mr(fr_desc->pi_ctx->prot_mr);
ib_destroy_mr(fr_desc->pi_ctx->sig_mr);
ib_dereg_mr(fr_desc->pi_ctx->sig_mr);
kfree(fr_desc->pi_ctx);
}
kfree(fr_desc);

10
include/rdma/ib_verbs.h
View File

@ -1671,7 +1671,6 @@ struct ib_device {
int (*query_mr)(struct ib_mr *mr,
struct ib_mr_attr *mr_attr);
int (*dereg_mr)(struct ib_mr *mr);
int (*destroy_mr)(struct ib_mr *mr);
struct ib_mr * (*create_mr)(struct ib_pd *pd,
struct ib_mr_init_attr *mr_init_attr);
struct ib_mr * (*alloc_fast_reg_mr)(struct ib_pd *pd,
@ -2828,15 +2827,6 @@ int ib_dereg_mr(struct ib_mr *mr);
struct ib_mr *ib_create_mr(struct ib_pd *pd,
struct ib_mr_init_attr *mr_init_attr);
/**
* ib_destroy_mr - Destroys a memory region that was created using
* ib_create_mr and removes it from HW translation tables.
* @mr: The memory region to destroy.
*
* This function can fail, if the memory region has memory windows bound to it.
*/
int ib_destroy_mr(struct ib_mr *mr);
/**
* ib_alloc_fast_reg_mr - Allocates memory region usable with the
* IB_WR_FAST_REG_MR send work request.