[XEN RFC PATCH 09/40] xen/x86: Move numa_add_cpu_node to common

[Wei Chen <wei.chen@arm.com>]

This function will be reused by Arm later, so we move it
from arch/x86 to common. But we keep cpu_to_node and
node_to_cpumask to x86 header file. Because cpu_to_node and
node_to_cpumask have different implementation for x86 and Arm.
We will move them to common header file when we change the Arm
implementation in later patches.

Signed-off-by: Wei Chen <wei.chen@arm.com>
---
 xen/arch/x86/numa.c        |  9 ---------
 xen/common/numa.c          | 11 +++++++++++
 xen/include/asm-x86/numa.h |  1 -
 xen/include/xen/numa.h     |  2 ++
 4 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/xen/arch/x86/numa.c b/xen/arch/x86/numa.c
index a6211be121..f2626b3968 100644
--- a/xen/arch/x86/numa.c
+++ b/xen/arch/x86/numa.c
@@ -29,16 +29,12 @@ custom_param("numa", numa_setup);
 /* from proto.h */
 #define round_up(x,y) ((((x)+(y))-1) & (~((y)-1)))
 
-nodeid_t cpu_to_node[NR_CPUS] __read_mostly = {
-    [0 ... NR_CPUS-1] = NUMA_NO_NODE
-};
 /*
  * Keep BIOS's CPU2node information, should not be used for memory allocaion
  */
 nodeid_t apicid_to_node[MAX_LOCAL_APIC] = {
     [0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE
 };
-cpumask_t node_to_cpumask[MAX_NUMNODES] __read_mostly;
 
 nodemask_t __read_mostly node_online_map = { { [0] = 1UL } };
 
@@ -167,11 +163,6 @@ void __init numa_initmem_init(unsigned long start_pfn, unsigned long end_pfn)
                     (u64)end_pfn << PAGE_SHIFT);
 }
 
-void numa_add_cpu(int cpu)
-{
-    cpumask_set_cpu(cpu, &node_to_cpumask[cpu_to_node(cpu)]);
-} 
-
 void numa_set_node(int cpu, nodeid_t node)
 {
     cpu_to_node[cpu] = node;
diff --git a/xen/common/numa.c b/xen/common/numa.c
index e65b6a6676..9b6f23dfc1 100644
--- a/xen/common/numa.c
+++ b/xen/common/numa.c
@@ -23,6 +23,12 @@ typeof(*memnodemap) _memnodemap[64];
 unsigned long memnodemapsize;
 u8 *memnodemap;
 
+nodeid_t cpu_to_node[NR_CPUS] __read_mostly = {
+    [0 ... NR_CPUS-1] = NUMA_NO_NODE
+};
+
+cpumask_t node_to_cpumask[MAX_NUMNODES] __read_mostly;
+
 /*
  * Given a shift value, try to populate memnodemap[]
  * Returns :
@@ -129,3 +135,8 @@ int __init compute_hash_shift(struct node *nodes, int numnodes,
 
     return shift;
 }
+
+void numa_add_cpu(int cpu)
+{
+    cpumask_set_cpu(cpu, &node_to_cpumask[cpu_to_node(cpu)]);
+}
diff --git a/xen/include/asm-x86/numa.h b/xen/include/asm-x86/numa.h
index abe5617d01..07ff78ea1b 100644
--- a/xen/include/asm-x86/numa.h
+++ b/xen/include/asm-x86/numa.h
@@ -27,7 +27,6 @@ extern nodeid_t pxm_to_node(unsigned int pxm);
 
 #define ZONE_ALIGN (1UL << (MAX_ORDER+PAGE_SHIFT))
 
-extern void numa_add_cpu(int cpu);
 extern void numa_init_array(void);
 extern bool numa_off;
 
diff --git a/xen/include/xen/numa.h b/xen/include/xen/numa.h
index 39e8a4e00a..f9769cba4b 100644
--- a/xen/include/xen/numa.h
+++ b/xen/include/xen/numa.h
@@ -51,6 +51,8 @@ static inline __attribute__((pure)) nodeid_t phys_to_nid(paddr_t addr)
 #define node_end_pfn(nid)       (NODE_DATA(nid)->node_start_pfn + \
 				 NODE_DATA(nid)->node_spanned_pages)
 
+extern void numa_add_cpu(int cpu);
+
 #endif /* CONFIG_NUMA */
 
 #endif /* _XEN_NUMA_H */
-- 
2.25.1