[PATCH 03/10] RDMA: lift ibdev_to_node from rds to common code

[Christoph Hellwig <hch@lst.de>]

Lift the ibdev_to_node from rds to common code and document it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 include/rdma/ib_verbs.h | 13 +++++++++++++
 net/rds/ib.h            |  7 -------
 2 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 9bf6c319a670e2..3257cc046e460f 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -4615,6 +4615,19 @@ static inline struct ib_device *rdma_device_to_ibdev(struct device *device)
 	return coredev->owner;
 }
 
+/**
+ * ibdev_to_node - return the NUMA node for a given ib_device
+ * @dev:	device to get the NUMA node for.
+ */
+static inline int ibdev_to_node(struct ib_device *ibdev)
+{
+	struct device *parent = ibdev->dev.parent;
+
+	if (!parent)
+		return NUMA_NO_NODE;
+	return dev_to_node(parent);
+}
+
 /**
  * rdma_device_to_drv_device - Helper macro to reach back to driver's
  *			       ib_device holder structure from device pointer.
diff --git a/net/rds/ib.h b/net/rds/ib.h
index 8dfff43cf07f46..c23a11d9ad3628 100644
--- a/net/rds/ib.h
+++ b/net/rds/ib.h
@@ -264,13 +264,6 @@ struct rds_ib_device {
 	int			*vector_load;
 };
 
-static inline int ibdev_to_node(struct ib_device *ibdev)
-{
-	struct device *parent;
-
-	parent = ibdev->dev.parent;
-	return parent ? dev_to_node(parent) : NUMA_NO_NODE;
-}
 #define rdsibdev_to_node(rdsibdev) ibdev_to_node(rdsibdev->dev)
 
 /* bits for i_ack_flags */
-- 
2.28.0