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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 /arch
parentad658b385e6308066f9084a7ea01305b223cd3a0 (diff)
downloadop-kernel-dev-dc8ecb43701a78bd3c38e7fed1d1c76840579450.zip
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86_64/Kconfig4
-rw-r--r--arch/x86_64/mm/numa.c15
2 files changed, 4 insertions, 15 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;
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