IB: remove in-kernel support for memory windows
Remove the unused ib_allow_mw and ib_bind_mw functions, remove the
unused IB_WR_BIND_MW and IB_WC_BIND_MW opcodes and move ib_dealloc_mw
into the uverbs module.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core]
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h
index 94bbd8c..612ccfd 100644
--- a/drivers/infiniband/core/uverbs.h
+++ b/drivers/infiniband/core/uverbs.h
@@ -204,6 +204,8 @@
struct ib_event *event);
void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev, struct ib_xrcd *xrcd);
+int uverbs_dealloc_mw(struct ib_mw *mw);
+
struct ib_uverbs_flow_spec {
union {
union {
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 9561056..5428ebe 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -1243,7 +1243,7 @@
idr_remove_uobj(&ib_uverbs_mw_idr, uobj);
err_unalloc:
- ib_dealloc_mw(mw);
+ uverbs_dealloc_mw(mw);
err_put:
put_pd_read(pd);
@@ -1272,7 +1272,7 @@
mw = uobj->object;
- ret = ib_dealloc_mw(mw);
+ ret = uverbs_dealloc_mw(mw);
if (!ret)
uobj->live = 0;
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index e3ef288..39680ae 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -133,6 +133,17 @@
static void ib_uverbs_add_one(struct ib_device *device);
static void ib_uverbs_remove_one(struct ib_device *device, void *client_data);
+int uverbs_dealloc_mw(struct ib_mw *mw)
+{
+ struct ib_pd *pd = mw->pd;
+ int ret;
+
+ ret = mw->device->dealloc_mw(mw);
+ if (!ret)
+ atomic_dec(&pd->usecnt);
+ return ret;
+}
+
static void ib_uverbs_release_dev(struct kobject *kobj)
{
struct ib_uverbs_device *dev =
@@ -224,7 +235,7 @@
struct ib_mw *mw = uobj->object;
idr_remove_uobj(&ib_uverbs_mw_idr, uobj);
- ib_dealloc_mw(mw);
+ uverbs_dealloc_mw(mw);
kfree(uobj);
}
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 70b1016..c5e0f07 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -1403,42 +1403,6 @@
}
EXPORT_SYMBOL(ib_alloc_mr);
-/* Memory windows */
-
-struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
-{
- struct ib_mw *mw;
-
- if (!pd->device->alloc_mw)
- return ERR_PTR(-ENOSYS);
-
- mw = pd->device->alloc_mw(pd, type);
- if (!IS_ERR(mw)) {
- mw->device = pd->device;
- mw->pd = pd;
- mw->uobject = NULL;
- mw->type = type;
- atomic_inc(&pd->usecnt);
- }
-
- return mw;
-}
-EXPORT_SYMBOL(ib_alloc_mw);
-
-int ib_dealloc_mw(struct ib_mw *mw)
-{
- struct ib_pd *pd;
- int ret;
-
- pd = mw->pd;
- ret = mw->device->dealloc_mw(mw);
- if (!ret)
- atomic_dec(&pd->usecnt);
-
- return ret;
-}
-EXPORT_SYMBOL(ib_dealloc_mw);
-
/* "Fast" memory regions */
struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
