x86: change size of node ids from u8 to s16

Change the size of node ids for X86_64 from u8 to s16 to
accomodate more than 32k nodes and allow for NUMA_NO_NODE
(-1) to be sign extended to int.

Cc: David Rientjes <rientjes@google.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Mike Travis <travis@sgi.com>
Reviewed-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

3 files changed, 9 insertions, 9 deletions

diff --git a/include/asm-x86/mmzone_64.h b/include/asm-x86/mmzone_64.h
index b0c25ae111d9..ebaf9663aa8a 100644
--- a/include/asm-x86/mmzone_64.h
+++ b/include/asm-x86/mmzone_64.h
@@ -15,9 +15,9 @@
 struct memnode {
         int shift;
         unsigned int mapsize;
-        u8 *map;
-        u8 embedded_map[64-16];
-} ____cacheline_aligned; /* total size = 64 bytes */
+        s16 *map;
+        s16 embedded_map[64-8];
+} ____cacheline_aligned; /* total size = 128 bytes */
 extern struct memnode memnode;
 #define memnode_shift memnode.shift
 #define memnodemap memnode.map
diff --git a/include/asm-x86/numa_64.h b/include/asm-x86/numa_64.h
index c797cd523d2b..15fe07cde586 100644
--- a/include/asm-x86/numa_64.h
+++ b/include/asm-x86/numa_64.h
@@ -20,7 +20,7 @@ extern void numa_set_node(int cpu, int node);
 extern void srat_reserve_add_area(int nodeid);
 extern int hotadd_percent;
 
-extern u16 apicid_to_node[MAX_LOCAL_APIC];
+extern s16 apicid_to_node[MAX_LOCAL_APIC];
 
 extern void numa_initmem_init(unsigned long start_pfn, unsigned long end_pfn);
 extern unsigned long numa_free_all_bootmem(void);
diff --git a/include/asm-x86/topology.h b/include/asm-x86/topology.h
index 7b0cce2f370d..8af05a93f097 100644
--- a/include/asm-x86/topology.h
+++ b/include/asm-x86/topology.h
@@ -31,11 +31,11 @@
 
 /* Mappings between logical cpu number and node number */
 #ifdef CONFIG_X86_32
-extern u8 cpu_to_node_map[];
+extern int cpu_to_node_map[];
 
 #else
-DECLARE_PER_CPU(u16, x86_cpu_to_node_map);
-extern u16 x86_cpu_to_node_map_init[];
+DECLARE_PER_CPU(int, x86_cpu_to_node_map);
+extern int x86_cpu_to_node_map_init[];
 extern void *x86_cpu_to_node_map_early_ptr;
 /* Returns the number of the current Node. */
 #define numa_node_id()          (early_cpu_to_node(raw_smp_processor_id()))
@@ -43,7 +43,7 @@ extern void *x86_cpu_to_node_map_early_ptr;
 
 extern cpumask_t node_to_cpumask_map[];
 
-#define NUMA_NO_NODE    ((u16)(~0))
+#define NUMA_NO_NODE    (-1)
 
 /* Returns the number of the node containing CPU 'cpu' */
 #ifdef CONFIG_X86_32
@@ -56,7 +56,7 @@ static inline int cpu_to_node(int cpu)
 #else /* CONFIG_X86_64 */
 static inline int early_cpu_to_node(int cpu)
 {
-        u16 *cpu_to_node_map = x86_cpu_to_node_map_early_ptr;
+        int *cpu_to_node_map = x86_cpu_to_node_map_early_ptr;
 
         if (cpu_to_node_map)
                 return cpu_to_node_map[cpu];