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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2006-03-27 01:15:34 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-27 08:44:44 -0800
commitdc8ecb43701a78bd3c38e7fed1d1c76840579450 (patch)
tree4e9056ec8a86fc321384da15ba7a05bfda32e034
parentad658b385e6308066f9084a7ea01305b223cd3a0 (diff)
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op-kernel-dev-dc8ecb43701a78bd3c38e7fed1d1c76840579450.tar.gz
[PATCH] unify pfn_to_page: x86_64 pfn_to_page
x86_64 can use generic funcs. For DISCONTIGMEM, CONFIG_OUT_OF_LINE_PFN_TO_PAGE is selected. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--arch/x86_64/Kconfig4
-rw-r--r--arch/x86_64/mm/numa.c15
-rw-r--r--include/asm-x86_64/mmzone.h4
-rw-r--r--include/asm-x86_64/page.h3
4 files changed, 5 insertions, 21 deletions
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index 1cb4aa2..4310b4a 100644
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -334,6 +334,10 @@ config HAVE_ARCH_EARLY_PFN_TO_NID
def_bool y
depends on NUMA
+config OUT_OF_LINE_PFN_TO_PAGE
+ def_bool y
+ depends on DISCONTIGMEM
+
config NR_CPUS
int "Maximum number of CPUs (2-256)"
range 2 255
diff --git a/arch/x86_64/mm/numa.c b/arch/x86_64/mm/numa.c
index 63c7264..4be82d6 100644
--- a/arch/x86_64/mm/numa.c
+++ b/arch/x86_64/mm/numa.c
@@ -377,21 +377,6 @@ EXPORT_SYMBOL(node_data);
* Should do that.
*/
-/* Requires pfn_valid(pfn) to be true */
-struct page *pfn_to_page(unsigned long pfn)
-{
- int nid = phys_to_nid(((unsigned long)(pfn)) << PAGE_SHIFT);
- return (pfn - node_start_pfn(nid)) + NODE_DATA(nid)->node_mem_map;
-}
-EXPORT_SYMBOL(pfn_to_page);
-
-unsigned long page_to_pfn(struct page *page)
-{
- return (long)(((page) - page_zone(page)->zone_mem_map) +
- page_zone(page)->zone_start_pfn);
-}
-EXPORT_SYMBOL(page_to_pfn);
-
int pfn_valid(unsigned long pfn)
{
unsigned nid;
diff --git a/include/asm-x86_64/mmzone.h b/include/asm-x86_64/mmzone.h
index 937f99b..6b18cd8 100644
--- a/include/asm-x86_64/mmzone.h
+++ b/include/asm-x86_64/mmzone.h
@@ -44,12 +44,8 @@ static inline __attribute__((pure)) int phys_to_nid(unsigned long addr)
#define pfn_to_nid(pfn) phys_to_nid((unsigned long)(pfn) << PAGE_SHIFT)
#define kvaddr_to_nid(kaddr) phys_to_nid(__pa(kaddr))
-extern struct page *pfn_to_page(unsigned long pfn);
-extern unsigned long page_to_pfn(struct page *page);
extern int pfn_valid(unsigned long pfn);
#endif
-#define local_mapnr(kvaddr) \
- ( (__pa(kvaddr) >> PAGE_SHIFT) - node_start_pfn(kvaddr_to_nid(kvaddr)) )
#endif
#endif
diff --git a/include/asm-x86_64/page.h b/include/asm-x86_64/page.h
index 615e3e4..408185b 100644
--- a/include/asm-x86_64/page.h
+++ b/include/asm-x86_64/page.h
@@ -123,8 +123,6 @@ typedef struct { unsigned long pgprot; } pgprot_t;
#define __boot_va(x) __va(x)
#define __boot_pa(x) __pa(x)
#ifdef CONFIG_FLATMEM
-#define pfn_to_page(pfn) (mem_map + (pfn))
-#define page_to_pfn(page) ((unsigned long)((page) - mem_map))
#define pfn_valid(pfn) ((pfn) < end_pfn)
#endif
@@ -140,6 +138,7 @@ typedef struct { unsigned long pgprot; } pgprot_t;
#endif /* __KERNEL__ */
+#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>
#endif /* _X86_64_PAGE_H */
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