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-rw-r--r--arch/x86/Kconfig4
-rw-r--r--arch/x86/include/asm/topology.h22
-rw-r--r--arch/x86/kernel/cpu/common.c6
-rw-r--r--arch/x86/kernel/setup_percpu.c4
-rw-r--r--arch/x86/mm/numa_64.c9
5 files changed, 21 insertions, 24 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5dc54219e73b..dcb0593b4a66 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1706,6 +1706,10 @@ config HAVE_ARCH_EARLY_PFN_TO_NID
def_bool X86_64
depends on NUMA
+config USE_PERCPU_NUMA_NODE_ID
+ def_bool X86_64
+ depends on NUMA
+
menu "Power management and ACPI options"
config ARCH_HIBERNATION_HEADER
diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h
index a2e629476b0e..21899cc31e52 100644
--- a/arch/x86/include/asm/topology.h
+++ b/arch/x86/include/asm/topology.h
@@ -53,33 +53,29 @@
extern int cpu_to_node_map[];
/* Returns the number of the node containing CPU 'cpu' */
-static inline int cpu_to_node(int cpu)
+static inline int __cpu_to_node(int cpu)
{
return cpu_to_node_map[cpu];
}
-#define early_cpu_to_node(cpu) cpu_to_node(cpu)
+#define early_cpu_to_node __cpu_to_node
+#define cpu_to_node __cpu_to_node
#else /* CONFIG_X86_64 */
/* 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. */
-DECLARE_PER_CPU(int, node_number);
-#define numa_node_id() percpu_read(node_number)
-
#ifdef CONFIG_DEBUG_PER_CPU_MAPS
-extern int cpu_to_node(int cpu);
+/*
+ * override generic percpu implementation of cpu_to_node
+ */
+extern int __cpu_to_node(int cpu);
+#define cpu_to_node __cpu_to_node
+
extern int early_cpu_to_node(int cpu);
#else /* !CONFIG_DEBUG_PER_CPU_MAPS */
-/* Returns the number of the node containing CPU 'cpu' */
-static inline int cpu_to_node(int cpu)
-{
- return per_cpu(x86_cpu_to_node_map, cpu);
-}
-
/* Same function but used if called before per_cpu areas are setup */
static inline int early_cpu_to_node(int cpu)
{
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index cc83a002786e..68e4a6f2211e 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -1121,9 +1121,9 @@ void __cpuinit cpu_init(void)
oist = &per_cpu(orig_ist, cpu);
#ifdef CONFIG_NUMA
- if (cpu != 0 && percpu_read(node_number) == 0 &&
- cpu_to_node(cpu) != NUMA_NO_NODE)
- percpu_write(node_number, cpu_to_node(cpu));
+ if (cpu != 0 && percpu_read(numa_node) == 0 &&
+ early_cpu_to_node(cpu) != NUMA_NO_NODE)
+ set_numa_node(early_cpu_to_node(cpu));
#endif
me = current;
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index ef6370b00e70..a867940a6dfc 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -265,10 +265,10 @@ void __init setup_per_cpu_areas(void)
#if defined(CONFIG_X86_64) && defined(CONFIG_NUMA)
/*
- * make sure boot cpu node_number is right, when boot cpu is on the
+ * make sure boot cpu numa_node is right, when boot cpu is on the
* node that doesn't have mem installed
*/
- per_cpu(node_number, boot_cpu_id) = cpu_to_node(boot_cpu_id);
+ set_cpu_numa_node(boot_cpu_id, early_cpu_to_node(boot_cpu_id));
#endif
/* Setup node to cpumask map */
diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c
index 8948f47fde05..a7bcc23ef96c 100644
--- a/arch/x86/mm/numa_64.c
+++ b/arch/x86/mm/numa_64.c
@@ -33,9 +33,6 @@ int numa_off __initdata;
static unsigned long __initdata nodemap_addr;
static unsigned long __initdata nodemap_size;
-DEFINE_PER_CPU(int, node_number) = 0;
-EXPORT_PER_CPU_SYMBOL(node_number);
-
/*
* Map cpu index to node index
*/
@@ -809,7 +806,7 @@ void __cpuinit numa_set_node(int cpu, int node)
per_cpu(x86_cpu_to_node_map, cpu) = node;
if (node != NUMA_NO_NODE)
- per_cpu(node_number, cpu) = node;
+ set_cpu_numa_node(cpu, node);
}
void __cpuinit numa_clear_node(int cpu)
@@ -867,7 +864,7 @@ void __cpuinit numa_remove_cpu(int cpu)
numa_set_cpumask(cpu, 0);
}
-int cpu_to_node(int cpu)
+int __cpu_to_node(int cpu)
{
if (early_per_cpu_ptr(x86_cpu_to_node_map)) {
printk(KERN_WARNING
@@ -877,7 +874,7 @@ int cpu_to_node(int cpu)
}
return per_cpu(x86_cpu_to_node_map, cpu);
}
-EXPORT_SYMBOL(cpu_to_node);
+EXPORT_SYMBOL(__cpu_to_node);
/*
* Same function as cpu_to_node() but used if called before the