[PATCH] unify pfn_to_page take3 [19/23] sparc64 pfn_to_page

[KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>]

sparc64 can use generic funcs.
CONFIG_OUT_OF_LINE_PFN_TO_PAGE is selected.

Signed-Off-By: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>


Index: testtree/arch/sparc64/Kconfig
===================================================================
--- testtree.orig/arch/sparc64/Kconfig
+++ testtree/arch/sparc64/Kconfig
@@ -34,6 +34,10 @@ config ARCH_MAY_HAVE_PC_FDC
  	bool
  	default y

+config OUT_OF_LINE_PFN_TO_PAGE
+	bool
+	default y
+
  choice
  	prompt "Kernel page size"
  	default SPARC64_PAGE_SIZE_8KB
Index: testtree/arch/sparc64/mm/init.c
===================================================================
--- testtree.orig/arch/sparc64/mm/init.c
+++ testtree/arch/sparc64/mm/init.c
@@ -320,16 +320,6 @@ void __kprobes flush_icache_range(unsign
  	}
  }

-unsigned long page_to_pfn(struct page *page)
-{
-	return (unsigned long) ((page - mem_map) + pfn_base);
-}
-
-struct page *pfn_to_page(unsigned long pfn)
-{
-	return (mem_map + (pfn - pfn_base));
-}
-
  void show_mem(void)
  {
  	printk("Mem-info:\n");
Index: testtree/include/asm-sparc64/page.h
===================================================================
--- testtree.orig/include/asm-sparc64/page.h
+++ testtree/include/asm-sparc64/page.h
@@ -129,8 +129,8 @@ typedef unsigned long pgprot_t;
   * the first physical page in the machine is at some huge physical address,
   * such as 4GB.   This is common on a partitioned E10000, for example.
   */
-extern struct page *pfn_to_page(unsigned long pfn);
-extern unsigned long page_to_pfn(struct page *);
+/* pfn_base is declared in pgtable.h */
+#define ARCH_PFN_OFFSET		(pfn_base)

  #define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr)>>PAGE_SHIFT)

@@ -147,6 +147,7 @@ extern unsigned long page_to_pfn(struct

  #endif /* !(__KERNEL__) */

+#include <asm-generic/memory_model.h>
  #include <asm-generic/page.h>

  #endif /* !(_SPARC64_PAGE_H) */