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[PATCH] ppc64: add early_pfn_to_nid

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Provide an implementation of early_pfn_to_nid for PPC64.  This is used by
memory models to determine the node from which to take allocations before the
memory allocators are fully initialised.

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Martin Bligh <mbligh@aracnet.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andy Whitcroft 2005-06-23 00:08:01 -07:00 committed by Linus Torvalds
parent 29751f6991
commit 510f8fa7ba
2 changed files with 9 additions and 0 deletions
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4
arch/ppc64/Kconfig
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@ -211,6 +211,10 @@ config ARCH_FLATMEM_ENABLE
source "mm/Kconfig"
config HAVE_ARCH_EARLY_PFN_TO_NID
bool
default y
# Some NUMA nodes have memory ranges that span
# other nodes. Even though a pfn is valid and
# between a node's start and end pfns, it may not

5
include/asm-ppc64/mmzone.h
View File

@ -90,4 +90,9 @@ static inline int pa_to_nid(unsigned long pa)
#define discontigmem_pfn_valid(pfn) ((pfn) < num_physpages)
#endif /* CONFIG_DISCONTIGMEM */
#ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
#define early_pfn_to_nid(pfn) pa_to_nid(((unsigned long)pfn) << PAGE_SHIFT)
#endif
#endif /* _ASM_MMZONE_H_ */