page allocator: use a pre-calculated value instead of num_online_nodes() in fast...

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / nodemask.h

diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h
index 848025cd708783795c96a35c08a6176d0fe84a9f..829b94b156f28ec0ed7c0d8dbc2dfeab4ea6825b 100644 (file)
--- a/include/linux/nodemask.h
+++ b/include/linux/nodemask.h
@@ -408,6 +408,19 @@ static inline int num_node_state(enum node_states state)
 #define next_online_node(nid)  next_node((nid), node_states[N_ONLINE])
 
 extern int nr_node_ids;
+extern int nr_online_nodes;
+
+static inline void node_set_online(int nid)
+{
+       node_set_state(nid, N_ONLINE);
+       nr_online_nodes = num_node_state(N_ONLINE);
+}
+
+static inline void node_set_offline(int nid)
+{
+       node_clear_state(nid, N_ONLINE);
+       nr_online_nodes = num_node_state(N_ONLINE);
+}
 #else
 
 static inline int node_state(int node, enum node_states state)
@@ -434,7 +447,10 @@ static inline int num_node_state(enum node_states state)
 #define first_online_node      0
 #define next_online_node(nid)  (MAX_NUMNODES)
 #define nr_node_ids            1
+#define nr_online_nodes                1
 
+#define node_set_online(node)     node_set_state((node), N_ONLINE)
+#define node_set_offline(node)    node_clear_state((node), N_ONLINE)
 #endif
 
 #define node_online_map        node_states[N_ONLINE]
@@ -454,9 +470,6 @@ static inline int num_node_state(enum node_states state)
 #define node_online(node)      node_state((node), N_ONLINE)
 #define node_possible(node)    node_state((node), N_POSSIBLE)
 
-#define node_set_online(node)     node_set_state((node), N_ONLINE)
-#define node_set_offline(node)    node_clear_state((node), N_ONLINE)
-
 #define for_each_node(node)       for_each_node_state(node, N_POSSIBLE)
 #define for_each_online_node(node) for_each_node_state(node, N_ONLINE)