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| author | Zhen Lei <thunder.leizhen@huawei.com> | 2015-08-25 12:08:22 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-17 22:11:50 -0700 |
| commit | 56f2de81e020c537f7e35550d13840143cb765cd (patch) | |
| tree | 7863e4bfe65656253a9f456bc704a1f4729c6a2c | |
| parent | 6713e8fb541656d00249dca6627395b461c39ece (diff) | |
| download | lwn-56f2de81e020c537f7e35550d13840143cb765cd.tar.gz lwn-56f2de81e020c537f7e35550d13840143cb765cd.zip | |
of: to support binding numa node to specified device in devicetree
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>
| -rw-r--r-- | drivers/base/core.c | 2 | ||||
| -rw-r--r-- | 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 334ec7ef1960..b7d56c5ea3c6 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -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. */ diff --git a/drivers/of/device.c b/drivers/of/device.c index 8b91ea241b10..e5f47cec75f3 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); } |