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of: to support binding numa node to specified device in devicetree

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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.leizhen@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Zhen Lei 2015-08-25 12:08:22 +08:00 committed by Greg Kroah-Hartman
parent 6713e8fb54
commit 56f2de81e0
2 changed files with 7 additions and 6 deletions
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2
drivers/base/core.c
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@ -1066,7 +1066,7 @@ 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. */

11
drivers/of/device.c
View File

@ -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);
}