hugetlb: add generic definition of NUMA_NO_NODE

Move definition of NUMA_NO_NODE from ia64 and x86_64 arch specific headers
to generic header 'linux/numa.h' for use in generic code.  NUMA_NO_NODE
replaces bare '-1' where it's used in this series to indicate "no node id
specified".  Ultimately, it can be used to replace the -1 elsewhere where
it is used similarly.

Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: Andi Kleen <andi@firstfloor.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Nishanth Aravamudan <nacc@us.ibm.com>
Cc: Adam Litke <agl@us.ibm.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Eric Whitney <eric.whitney@hp.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/ia64/include/asm/numa.h b/arch/ia64/include/asm/numa.h
index 3499ff5..6a8a27c 100644 (file)
--- a/arch/ia64/include/asm/numa.h
+++ b/arch/ia64/include/asm/numa.h
@@ -22,8 +22,6 @@
 
 #include <asm/mmzone.h>
 
 
 #include <asm/mmzone.h>
 

-#define NUMA_NO_NODE   -1
-

 extern u16 cpu_to_node_map[NR_CPUS] __cacheline_aligned;
 extern cpumask_t node_to_cpu_mask[MAX_NUMNODES] __cacheline_aligned;
 extern pg_data_t *pgdat_list[MAX_NUMNODES];
 extern u16 cpu_to_node_map[NR_CPUS] __cacheline_aligned;
 extern cpumask_t node_to_cpu_mask[MAX_NUMNODES] __cacheline_aligned;
 extern pg_data_t *pgdat_list[MAX_NUMNODES];

diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h
index 40e37b1..c5087d7 100644 (file)
--- a/arch/x86/include/asm/topology.h
+++ b/arch/x86/include/asm/topology.h
@@ -35,11 +35,16 @@
 # endif
 #endif
 
 # endif
 #endif
 

-/* Node not present */
-#define NUMA_NO_NODE   (-1)
+/*
+ * to preserve the visibility of NUMA_NO_NODE definition,
+ * moved to there from here.  May be used independent of
+ * CONFIG_NUMA.
+ */
+#include <linux/numa.h>

 
 #ifdef CONFIG_NUMA
 #include <linux/cpumask.h>
 
 #ifdef CONFIG_NUMA
 #include <linux/cpumask.h>

+

 #include <asm/mpspec.h>
 
 #ifdef CONFIG_X86_32
 #include <asm/mpspec.h>
 
 #ifdef CONFIG_X86_32

diff --git a/include/linux/numa.h b/include/linux/numa.h
index a31a730..3aaa316 100644 (file)
--- a/include/linux/numa.h
+++ b/include/linux/numa.h
@@ -10,4 +10,6 @@
 
 #define MAX_NUMNODES    (1 << NODES_SHIFT)
 
 
 #define MAX_NUMNODES    (1 << NODES_SHIFT)
 

+#define        NUMA_NO_NODE    (-1)
+

 #endif /* _LINUX_NUMA_H */
 #endif /* _LINUX_NUMA_H */