driver core: try parent numa_node at first before using default
Yinghai Lu [Tue, 19 Feb 2008 11:20:41 +0000 (03:20 -0800)]
in the device_add, we try to use use parent numa_node.
need to make sure pci root bus's bridge device numa_node is set.
then we could use device->numa_node direclty for all device.
and don't need to call pcibus_to_node().

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

drivers/base/core.c
drivers/pci/probe.c

index 9248e09..be288b5 100644 (file)
@@ -787,6 +787,10 @@ int device_add(struct device *dev)
        parent = get_device(dev->parent);
        setup_parent(dev, parent);
 
+       /* use parent numa_node */
+       if (parent)
+               set_dev_node(dev, dev_to_node(parent));
+
        /* first, register with generic layer. */
        error = kobject_add(&dev->kobj, dev->kobj.parent, "%s", dev->bus_id);
        if (error)
@@ -1306,8 +1310,11 @@ int device_move(struct device *dev, struct device *new_parent)
        dev->parent = new_parent;
        if (old_parent)
                klist_remove(&dev->knode_parent);
-       if (new_parent)
+       if (new_parent) {
                klist_add_tail(&dev->knode_parent, &new_parent->klist_children);
+               set_dev_node(dev, dev_to_node(new_parent));
+       }
+
        if (!dev->class)
                goto out_put;
        error = device_move_class_links(dev, old_parent, new_parent);
@@ -1317,9 +1324,12 @@ int device_move(struct device *dev, struct device *new_parent)
                if (!kobject_move(&dev->kobj, &old_parent->kobj)) {
                        if (new_parent)
                                klist_remove(&dev->knode_parent);
-                       if (old_parent)
+                       dev->parent = old_parent;
+                       if (old_parent) {
                                klist_add_tail(&dev->knode_parent,
                                               &old_parent->klist_children);
+                               set_dev_node(dev, dev_to_node(old_parent));
+                       }
                }
                cleanup_glue_dir(dev, new_parent_kobj);
                put_device(new_parent);
index a8efdae..a40043b 100644 (file)
@@ -973,7 +973,6 @@ void pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
        dev->dev.release = pci_release_dev;
        pci_dev_get(dev);
 
-       set_dev_node(&dev->dev, pcibus_to_node(bus));
        dev->dev.dma_mask = &dev->dma_mask;
        dev->dev.dma_parms = &dev->dma_parms;
        dev->dev.coherent_dma_mask = 0xffffffffull;
@@ -1128,6 +1127,9 @@ struct pci_bus * pci_create_bus(struct device *parent,
                goto dev_reg_err;
        b->bridge = get_device(dev);
 
+       if (!parent)
+               set_dev_node(b->bridge, pcibus_to_node(b));
+
        b->dev.class = &pcibus_class;
        b->dev.parent = b->bridge;
        sprintf(b->dev.bus_id, "%04x:%02x", pci_domain_nr(b), bus);