For now, in function device_add, the new device will be forced to
inherit the numa node of its parent. But this will override the device's
numa node which configured in devicetree.
Signed-off-by: Zhen Lei <thunder.leiz...@huawei.com>
---
drivers/base/core.c | 2 +-
drivers/of/device.c | 11 ++++++-----
2 files changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/base/core.c b/drivers/base/core.c
index dafae6d..e06de82 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1017,7 +1017,7 @@ int device_add(struct device *dev)
dev->kobj.parent = kobj;
/* use parent numa_node */
- if (parent)
+ if (parent && (dev_to_node(dev) == NUMA_NO_NODE))
set_dev_node(dev, dev_to_node(parent));
/* first, register with generic layer. */
diff --git a/drivers/of/device.c b/drivers/of/device.c
index 8b91ea2..e5f47ce 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -60,11 +60,12 @@ int of_device_add(struct platform_device *ofdev)
ofdev->name = dev_name(&ofdev->dev);
ofdev->id = -1;
- /* device_add will assume that this device is on the same node as
- * the parent. If there is no parent defined, set the node
- * explicitly */
- if (!ofdev->dev.parent)
- set_dev_node(&ofdev->dev, of_node_to_nid(ofdev->dev.of_node));
+ /*
+ * If this device has not binding numa node in devicetree, that is
+ * of_node_to_nid returns NUMA_NO_NODE. device_add will assume that this
+ * device is on the same node as the parent.
+ */
+ set_dev_node(&ofdev->dev, of_node_to_nid(ofdev->dev.of_node));
return device_add(&ofdev->dev);
}
--
2.5.0
--
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