some numa system ( with multi HT chains) may return node without ram. aka it
is not online.
try to get one online node.
Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
diff --git a/include/linux/device.h b/include/linux/device.h
index 2258d89..7f1a4d7 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -478,7 +478,12 @@ struct device {
#ifdef CONFIG_NUMA
static inline int dev_to_node(struct device *dev)
{
- return dev->numa_node;
+ int node;
+ node = dev->numa_node;
+
+ if (node != -1 && !node_online(node))
+ node = numa_node_id();
+ return node;
}
static inline void set_dev_node(struct device *dev, int node)
{
--
