access_process_vm device memory infrastructure

[pandora-kernel.git] / include / asm-x86 / topology.h

diff --git a/include/asm-x86/topology.h b/include/asm-x86/topology.h
index dac09cb..90ac771 100644 (file)
--- a/include/asm-x86/topology.h
+++ b/include/asm-x86/topology.h
@@ -57,21 +57,32 @@ static inline int cpu_to_node(int cpu)
 }
 #define early_cpu_to_node(cpu) cpu_to_node(cpu)
 
+/* Returns a bitmask of CPUs on Node 'node'.
+ *
+ * Side note: this function creates the returned cpumask on the stack
+ * so with a high NR_CPUS count, excessive stack space is used.  The
+ * node_to_cpumask_ptr function should be used whenever possible.
+ */
+static inline cpumask_t node_to_cpumask(int node)
+{
+       return node_to_cpumask_map[node];
+}
+
 #else /* CONFIG_X86_64 */
 
 /* Mappings between node number and cpus on that node. */
-extern cpumask_t node_to_cpumask_map[];
+extern cpumask_t *node_to_cpumask_map;
 
 /* Mappings between logical cpu number and node number */
 DECLARE_EARLY_PER_CPU(int, x86_cpu_to_node_map);
 
 /* Returns the number of the current Node. */
-#define numa_node_id() (per_cpu(x86_cpu_to_node_map, raw_smp_processor_id()))
+#define numa_node_id()         read_pda(nodenumber)
 
 #ifdef CONFIG_DEBUG_PER_CPU_MAPS
 extern int cpu_to_node(int cpu);
 extern int early_cpu_to_node(int cpu);
-extern cpumask_t *_node_to_cpumask_ptr(int node);
+extern const cpumask_t *_node_to_cpumask_ptr(int node);
 extern cpumask_t node_to_cpumask(int node);
 
 #else  /* !CONFIG_DEBUG_PER_CPU_MAPS */
@@ -92,7 +103,7 @@ static inline int early_cpu_to_node(int cpu)
 }
 
 /* Returns a pointer to the cpumask of CPUs on Node 'node'. */
-static inline cpumask_t *_node_to_cpumask_ptr(int node)
+static inline const cpumask_t *_node_to_cpumask_ptr(int node)
 {
        return &node_to_cpumask_map[node];
 }
@@ -104,21 +115,15 @@ static inline cpumask_t node_to_cpumask(int node)
 }
 
 #endif /* !CONFIG_DEBUG_PER_CPU_MAPS */
-#endif /* CONFIG_X86_64 */
 
 /* Replace default node_to_cpumask_ptr with optimized version */
 #define node_to_cpumask_ptr(v, node)           \
-               cpumask_t *v = _node_to_cpumask_ptr(node)
+               const cpumask_t *v = _node_to_cpumask_ptr(node)
 
 #define node_to_cpumask_ptr_next(v, node)      \
                           v = _node_to_cpumask_ptr(node)
 
-/* Returns the number of the first CPU on Node 'node'. */
-static inline int node_to_first_cpu(int node)
-{
-       node_to_cpumask_ptr(mask, node);
-       return first_cpu(*mask);
-}
+#endif /* CONFIG_X86_64 */
 
 /*
  * Returns the number of the node containing Node 'node'. This
@@ -181,7 +186,7 @@ extern int __node_distance(int, int);
 #define        cpu_to_node(cpu)        0
 #define        early_cpu_to_node(cpu)  0
 
-static inline cpumask_t *_node_to_cpumask_ptr(int node)
+static inline const cpumask_t *_node_to_cpumask_ptr(int node)
 {
        return &cpu_online_map;
 }
@@ -196,7 +201,7 @@ static inline int node_to_first_cpu(int node)
 
 /* Replace default node_to_cpumask_ptr with optimized version */
 #define node_to_cpumask_ptr(v, node)           \
-               cpumask_t *v = _node_to_cpumask_ptr(node)
+               const cpumask_t *v = _node_to_cpumask_ptr(node)
 
 #define node_to_cpumask_ptr_next(v, node)      \
                           v = _node_to_cpumask_ptr(node)
@@ -204,6 +209,15 @@ static inline int node_to_first_cpu(int node)
 
 #include <asm-generic/topology.h>
 
+#ifdef CONFIG_NUMA
+/* Returns the number of the first CPU on Node 'node'. */
+static inline int node_to_first_cpu(int node)
+{
+       node_to_cpumask_ptr(mask, node);
+       return first_cpu(*mask);
+}
+#endif
+
 extern cpumask_t cpu_coregroup_map(int cpu);
 
 #ifdef ENABLE_TOPO_DEFINES