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| Started by | Zhen Lei <thunder.leizhen@huawei.com> |
|---|---|
| First post | 2015-08-25 06:20 +0200 |
| Last post | 2015-08-25 06:20 +0200 |
| Articles | 1 — 1 participant |
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[PATCH 1/1] of: to support binding numa node to specified device in devicetree Zhen Lei <thunder.leizhen@huawei.com> - 2015-08-25 06:20 +0200
| From | Zhen Lei <thunder.leizhen@huawei.com> |
|---|---|
| Date | 2015-08-25 06:20 +0200 |
| Subject | [PATCH 1/1] of: to support binding numa node to specified device in devicetree |
| Message-ID | <q1dSh-3Xn-3@gated-at.bofh.it> |
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> --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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