diff options
| author |   KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2006-03-27 01:15:34 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-27 08:44:44 -0800 |
| commit | dc8ecb43701a78bd3c38e7fed1d1c76840579450 (patch) | |
| tree | 4e9056ec8a86fc321384da15ba7a05bfda32e034 /arch | |
| parent | [PATCH] unify pfn_to_page: i386 pfn_to_page (diff) | |
| download | linux-dev-dc8ecb43701a78bd3c38e7fed1d1c76840579450.tar.xz linux-dev-dc8ecb43701a78bd3c38e7fed1d1c76840579450.zip | |
[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/Kconfig | 4 | ||||
| -rw-r--r-- | arch/x86_64/mm/numa.c | 15 |
2 files changed, 4 insertions, 15 deletions
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig index 1cb4aa241c8c..4310b4a311a5 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 63c72641b737..4be82d6e2b48 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; |