[SPARC64]: Use SPARSEMEM_STATIC

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Decrease the SECTION_SIZE_BITS --> MAX_PHYSADDR_BITS
range a little bit.

The cost of going to SPARSEMEM_STATIC becomes 8K of BSS space, and in
return we save a pointer dereferences on every page struct lookup.
Even better we hit the main kernel image for the base address which is
in a hugepage locked TLB entry.

Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

David S. Miller 2007-03-14 22:47:01 -07:00

parent 43bed12737

commit d78d0891d3

2 changed files with 4 additions and 3 deletions

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1

arch/sparc64/Kconfig

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6

include/asm-sparc64/sparsemem.h

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