Buddy allocator metadata for pools

[palacios.git] / linux_module / buddy.h

diff --git a/linux_module/buddy.h b/linux_module/buddy.h
index 54c24a7..34742e1 100644 (file)
--- a/linux_module/buddy.h
+++ b/linux_module/buddy.h
@@ -48,6 +48,8 @@ struct buddy_mempool {
                                    */
 
     unsigned long num_free_blocks;
+    
+    void             *user_metadata; // whatever the user wants
 
     struct rb_node tree_node;
 };
@@ -77,14 +79,16 @@ buddy_deinit(struct buddy_memzone * zone);
 extern int 
 buddy_add_pool(struct buddy_memzone * zone, 
               unsigned long base_addr, 
-              unsigned long pool_order);
+              unsigned long pool_order,
+              void          *user_metadata);
                          
 
 /* Remove pool based at given physical address */
 extern int
 buddy_remove_pool(struct buddy_memzone * zone, 
                  unsigned long base_addr, 
-                 unsigned char force);
+                 unsigned char force,
+                 void          **user_metadata);
 
 
 /* Allocate pages, returns physical address */