From 56f2de81e020c537f7e35550d13840143cb765cd Mon Sep 17 00:00:00 2001 From: Zhen Lei Date: Tue, 25 Aug 2015 12:08:22 +0800 Subject: [PATCH] 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 Signed-off-by: Greg Kroah-Hartman --- 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 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); } -- 2.39.5