1 files changed, 22 insertions, 0 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index 583a341e016c..49ab53ce92dc 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -371,6 +371,9 @@ struct device {
                                            core doesn't touch it */
         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             coherent_dma_mask;/* Like dma_mask, but for
                                              alloc_coherent mappings as
@@ -394,6 +397,25 @@ struct device {
         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 *
 dev_get_drvdata (struct device *dev)
 {