patch-2.4.22 linux-2.4.22/include/asm-arm/arch-sa1100/memory.h

• Lines: 76
• Date: 2003-08-25 04:44:43.000000000 -0700
• Orig file: linux-2.4.21/include/asm-arm/arch-sa1100/memory.h
• Orig date: 2001-08-12 11:14:00.000000000 -0700

diff -urN linux-2.4.21/include/asm-arm/arch-sa1100/memory.h linux-2.4.22/include/asm-arm/arch-sa1100/memory.h
@@ -58,9 +58,9 @@
 #ifdef CONFIG_DISCONTIGMEM
 /*
  * Because of the wide memory address space between physical RAM banks on the 
- * SA1100, it's much convenient to use Linux's NUMA support to implement our 
- * memory map representation.  Assuming all memory nodes have equal access 
- * characteristics, we then have generic discontigous memory support.
+ * SA1100, it's much more convenient to use Linux's NUMA support to implement
+ * our memory map representation.  Assuming all memory nodes have equal access 
+ * characteristics, we then have generic discontiguous memory support.
  *
  * Of course, all this isn't mandatory for SA1100 implementations with only
  * one used memory bank.  For those, simply undefine CONFIG_DISCONTIGMEM.
@@ -79,49 +79,36 @@
 /*
  * Given a kernel address, find the home node of the underlying memory.
  */
-#define KVADDR_TO_NID(addr) \
-		(((unsigned long)(addr) - 0xc0000000) >> 27)
+#define KVADDR_TO_NID(addr) (((unsigned long)(addr) - PAGE_OFFSET) >> 27)
 
 /*
- * Given a physical address, convert it to a node id.
+ * Given a page frame number, convert it to a node id.
  */
-#define PHYS_TO_NID(addr) KVADDR_TO_NID(__phys_to_virt(addr))
+#define PFN_TO_NID(pfn)		(((pfn) - PHYS_PFN_OFFSET) >> (27 - PAGE_SHIFT))
 
 /*
  * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
  * and returns the mem_map of that node.
  */
-#define ADDR_TO_MAPBASE(kaddr) \
-			NODE_MEM_MAP(KVADDR_TO_NID((unsigned long)(kaddr)))
+#define ADDR_TO_MAPBASE(kaddr)	NODE_MEM_MAP(KVADDR_TO_NID(kaddr))
 
 /*
- * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
- * and returns the index corresponding to the appropriate page in the
- * node's mem_map.
- */
-#define LOCAL_MAP_NR(kvaddr) \
-	(((unsigned long)(kvaddr) & 0x07ffffff) >> PAGE_SHIFT)
-
-/*
- * Given a kaddr, virt_to_page returns a pointer to the corresponding 
- * mem_map entry.
+ * Given a page frame number, find the owning node of the memory
+ * and returns the mem_map of that node.
  */
-#define virt_to_page(kaddr) \
-	(ADDR_TO_MAPBASE(kaddr) + LOCAL_MAP_NR(kaddr))
+#define PFN_TO_MAPBASE(pfn)	NODE_MEM_MAP(PFN_TO_NID(pfn))
 
 /*
- * VALID_PAGE returns a non-zero value if given page pointer is valid.
- * This assumes all node's mem_maps are stored within the node they refer to.
+ * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
+ * and returns the index corresponding to the appropriate page in the
+ * node's mem_map.
  */
-#define VALID_PAGE(page) \
-({ unsigned int node = KVADDR_TO_NID(page); \
-   ( (node < NR_NODES) && \
-     ((unsigned)((page) - NODE_MEM_MAP(node)) < NODE_DATA(node)->node_size) ); \
-})
+#define LOCAL_MAP_NR(addr) \
+	(((unsigned long)(addr) & 0x07ffffff) >> PAGE_SHIFT)
 
 #else
 
-#define PHYS_TO_NID(addr)	(0)
+#define PFN_TO_NID(addr)	(0)
 
 #endif