From: "Martin J. Bligh" <mbligh@aracnet.com>

Makes sure pfn_to_nid is defined for all combinations of subarches, and that
it's defined before it's used so we don't run into implicit declaration
problems.  



---

 25-akpm/include/asm-i386/mmzone.h |   81 +++++++++++++++++++-------------------
 25-akpm/include/linux/mmzone.h    |    1 
 2 files changed, 43 insertions(+), 39 deletions(-)

diff -puN include/asm-i386/mmzone.h~ia32-pfn_to_nid-fix include/asm-i386/mmzone.h
--- 25/include/asm-i386/mmzone.h~ia32-pfn_to_nid-fix	Fri Feb  6 12:14:33 2004
+++ 25-akpm/include/asm-i386/mmzone.h	Fri Feb  6 12:14:33 2004
@@ -10,7 +10,49 @@
 
 #ifdef CONFIG_DISCONTIGMEM
 
+#ifdef CONFIG_NUMA
+	#ifdef CONFIG_X86_NUMAQ
+		#include <asm/numaq.h>
+	#else	/* summit or generic arch */
+		#include <asm/srat.h>
+	#endif
+#else /* !CONFIG_NUMA */
+	#define get_memcfg_numa get_memcfg_numa_flat
+	#define get_zholes_size(n) (0)
+#endif /* CONFIG_NUMA */
+
 extern struct pglist_data *node_data[];
+#define NODE_DATA(nid)		(node_data[nid])
+
+/*
+ * generic node memory support, the following assumptions apply:
+ *
+ * 1) memory comes in 256Mb contigious chunks which are either present or not
+ * 2) we will not have more than 64Gb in total
+ *
+ * for now assume that 64Gb is max amount of RAM for whole system
+ *    64Gb / 4096bytes/page = 16777216 pages
+ */
+#define MAX_NR_PAGES 16777216
+#define MAX_ELEMENTS 256
+#define PAGES_PER_ELEMENT (MAX_NR_PAGES/MAX_ELEMENTS)
+
+extern u8 physnode_map[];
+
+static inline int pfn_to_nid(unsigned long pfn)
+{
+#ifdef CONFIG_NUMA
+	return(physnode_map[(pfn) / PAGES_PER_ELEMENT]);
+#else
+	return 0;
+#endif
+}
+
+static inline struct pglist_data *pfn_to_pgdat(unsigned long pfn)
+{
+	return(NODE_DATA(pfn_to_nid(pfn)));
+}
+
 
 /*
  * Following are macros that are specific to this numa platform.
@@ -43,11 +85,6 @@ extern struct pglist_data *node_data[];
  */
 #define kvaddr_to_nid(kaddr)	pfn_to_nid(__pa(kaddr) >> PAGE_SHIFT)
 
-/*
- * Return a pointer to the node data for node n.
- */
-#define NODE_DATA(nid)		(node_data[nid])
-
 #define node_mem_map(nid)	(NODE_DATA(nid)->node_mem_map)
 #define node_start_pfn(nid)	(NODE_DATA(nid)->node_start_pfn)
 #define node_end_pfn(nid)						\
@@ -89,40 +126,6 @@ extern struct pglist_data *node_data[];
  */ 
 #define pfn_valid(pfn)          ((pfn) < num_physpages)
 
-/*
- * generic node memory support, the following assumptions apply:
- *
- * 1) memory comes in 256Mb contigious chunks which are either present or not
- * 2) we will not have more than 64Gb in total
- *
- * for now assume that 64Gb is max amount of RAM for whole system
- *    64Gb / 4096bytes/page = 16777216 pages
- */
-#define MAX_NR_PAGES 16777216
-#define MAX_ELEMENTS 256
-#define PAGES_PER_ELEMENT (MAX_NR_PAGES/MAX_ELEMENTS)
-
-extern u8 physnode_map[];
-
-static inline int pfn_to_nid(unsigned long pfn)
-{
-	return(physnode_map[(pfn) / PAGES_PER_ELEMENT]);
-}
-static inline struct pglist_data *pfn_to_pgdat(unsigned long pfn)
-{
-	return(NODE_DATA(pfn_to_nid(pfn)));
-}
-
-#ifdef CONFIG_X86_NUMAQ
-#include <asm/numaq.h>
-#elif CONFIG_ACPI_SRAT
-#include <asm/srat.h>
-#elif CONFIG_X86_PC
-#define get_zholes_size(n) (0)
-#else
-#define pfn_to_nid(pfn)		(0)
-#endif /* CONFIG_X86_NUMAQ */
-
 extern int get_memcfg_numa_flat(void );
 /*
  * This allows any one NUMA architecture to be compiled
diff -puN include/linux/mmzone.h~ia32-pfn_to_nid-fix include/linux/mmzone.h
--- 25/include/linux/mmzone.h~ia32-pfn_to_nid-fix	Fri Feb  6 12:14:33 2004
+++ 25-akpm/include/linux/mmzone.h	Fri Feb  6 12:14:33 2004
@@ -311,6 +311,7 @@ extern struct pglist_data contig_page_da
 #define NODE_DATA(nid)		(&contig_page_data)
 #define NODE_MEM_MAP(nid)	mem_map
 #define MAX_NODES_SHIFT		1
+#define pfn_to_nid(pfn)		(0)
 
 #else /* CONFIG_DISCONTIGMEM */
 

_