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Commit 510f8fa7 authored by Andy Whitcroft's avatar Andy Whitcroft Committed by Linus Torvalds
Browse files

[PATCH] ppc64: add early_pfn_to_nid 



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: default avatarAndy Whitcroft <apw@shadowen.org>
Signed-off-by: default avatarDave Hansen <haveblue@us.ibm.com>
Signed-off-by: default avatarMartin Bligh <mbligh@aracnet.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 29751f69

arch/ppc64/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -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

include/asm-ppc64/mmzone.h

+5 −0
Original line number Diff line number Diff line
@@ -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_ */