linux-kernel - [PATCH 5.10 03/23] RDMA: Lift ibdev_to

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Message-Id: <20210225092516.697889791@linuxfoundation.org>
Date:   Thu, 25 Feb 2021 10:53:34 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Christoph Hellwig <hch@....de>,
        Jason Gunthorpe <jgg@...dia.com>,
        Krishnamraju Eraparaju <krishna2@...lsio.com>
Subject: [PATCH 5.10 03/23] RDMA: Lift ibdev_to_node from rds to common code

From: Christoph Hellwig <hch@....de>

commit 8ecfca68dc4cbee1272a0161e3f2fb9387dc6930 upstream.

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

Link: https://lore.kernel.org/r/20201106181941.1878556-4-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@....de>
Signed-off-by: Jason Gunthorpe <jgg@...dia.com>
Cc: Krishnamraju Eraparaju <krishna2@...lsio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 include/rdma/ib_verbs.h |   13 +++++++++++++
 net/rds/ib.h            |    7 -------
 2 files changed, 13 insertions(+), 7 deletions(-)

--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -4643,6 +4643,19 @@ static inline struct ib_device *rdma_dev
 }
 
 /**
+ * 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.
  *
--- 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 */