提交 87348136 编写于 作者: C Christoph Hellwig 提交者: Linus Torvalds

[PATCH] add numa node information to struct device

For node-aware skb allocations we need information about the node in struct
net_device or struct device.  Davem suggested to put it into struct device
which this patch does.

In particular:

 - struct device gets a new int numa_node member if CONFIG_NUMA is set
 - there are two new helpers, dev_to_node and set_dev_node to
   transparently deal with the non-numa case
 - for pci devices the node-info is set to the value we get from
   pcibus_to_node.

Note that for some architectures pcibus_to_node doesn't work yet at the time
we call it currently.  This is harmless and will just mean skb allocations
aren't node-local on this architectures until the implementation of
pcibus_to_node on these architectures have been updated (There are patches for
x86 and x86_64 floating around)

[akpm@osdl.org: cleanup]
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Cc: Christoph Lameter <clameter@engr.sgi.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
上级 8b98c169
...@@ -386,6 +386,7 @@ void device_initialize(struct device *dev) ...@@ -386,6 +386,7 @@ void device_initialize(struct device *dev)
INIT_LIST_HEAD(&dev->node); INIT_LIST_HEAD(&dev->node);
init_MUTEX(&dev->sem); init_MUTEX(&dev->sem);
device_init_wakeup(dev, 0); device_init_wakeup(dev, 0);
set_dev_node(dev, -1);
} }
#ifdef CONFIG_SYSFS_DEPRECATED #ifdef CONFIG_SYSFS_DEPRECATED
......
...@@ -873,6 +873,7 @@ void __devinit pci_device_add(struct pci_dev *dev, struct pci_bus *bus) ...@@ -873,6 +873,7 @@ void __devinit pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
dev->dev.release = pci_release_dev; dev->dev.release = pci_release_dev;
pci_dev_get(dev); pci_dev_get(dev);
set_dev_node(&dev->dev, pcibus_to_node(bus));
dev->dev.dma_mask = &dev->dma_mask; dev->dev.dma_mask = &dev->dma_mask;
dev->dev.coherent_dma_mask = 0xffffffffull; dev->dev.coherent_dma_mask = 0xffffffffull;
......
...@@ -371,6 +371,9 @@ struct device { ...@@ -371,6 +371,9 @@ struct device {
core doesn't touch it */ core doesn't touch it */
struct dev_pm_info power; struct dev_pm_info power;
#ifdef CONFIG_NUMA
int numa_node; /* NUMA node this device is close to */
#endif
u64 *dma_mask; /* dma mask (if dma'able device) */ u64 *dma_mask; /* dma mask (if dma'able device) */
u64 coherent_dma_mask;/* Like dma_mask, but for u64 coherent_dma_mask;/* Like dma_mask, but for
alloc_coherent mappings as alloc_coherent mappings as
...@@ -394,6 +397,25 @@ struct device { ...@@ -394,6 +397,25 @@ struct device {
void (*release)(struct device * dev); void (*release)(struct device * dev);
}; };
#ifdef CONFIG_NUMA
static inline int dev_to_node(struct device *dev)
{
return dev->numa_node;
}
static inline void set_dev_node(struct device *dev, int node)
{
dev->numa_node = node;
}
#else
static inline int dev_to_node(struct device *dev)
{
return -1;
}
static inline void set_dev_node(struct device *dev, int node)
{
}
#endif
static inline void * static inline void *
dev_get_drvdata (struct device *dev) dev_get_drvdata (struct device *dev)
{ {
......
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