1 files changed, 39 insertions, 0 deletions

diff --git a/include/linux/node.h b/include/linux/node.h
index 4139d728f8b3..1a557c589ecb 100644
--- a/include/linux/node.h
+++ b/include/linux/node.h
@@ -35,10 +35,45 @@ struct node_hmem_attrs {
         unsigned int write_latency;
 };
 
+enum cache_indexing {
+        NODE_CACHE_DIRECT_MAP,
+        NODE_CACHE_INDEXED,
+        NODE_CACHE_OTHER,
+};
+
+enum cache_write_policy {
+        NODE_CACHE_WRITE_BACK,
+        NODE_CACHE_WRITE_THROUGH,
+        NODE_CACHE_WRITE_OTHER,
+};
+
+/**
+ * struct node_cache_attrs - system memory caching attributes
+ *
+ * @indexing:           The ways memory blocks may be placed in cache
+ * @write_policy:       Write back or write through policy
+ * @size:               Total size of cache in bytes
+ * @line_size:          Number of bytes fetched on a cache miss
+ * @level:              The cache hierarchy level
+ */
+struct node_cache_attrs {
+        enum cache_indexing indexing;
+        enum cache_write_policy write_policy;
+        u64 size;
+        u16 line_size;
+        u8 level;
+};
+
 #ifdef CONFIG_HMEM_REPORTING
+void node_add_cache(unsigned int nid, struct node_cache_attrs *cache_attrs);
 void node_set_perf_attrs(unsigned int nid, struct node_hmem_attrs *hmem_attrs,
                          unsigned access);
 #else
+static inline void node_add_cache(unsigned int nid,
+                                  struct node_cache_attrs *cache_attrs)
+{
+}
+
 static inline void node_set_perf_attrs(unsigned int nid,
                                        struct node_hmem_attrs *hmem_attrs,
                                        unsigned access)
@@ -53,6 +88,10 @@ struct node {
 #if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_HUGETLBFS)
         struct work_struct      node_work;
 #endif
+#ifdef CONFIG_HMEM_REPORTING
+        struct list_head cache_attrs;
+        struct device *cache_dev;
+#endif
 };
 
 struct memory_block;