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[PATCH] mm: consolidate get_order
Someone mentioned that almost all the architectures used basically the same implementation of get_order. This patch consolidates them into asm-generic/page.h and includes that in the appropriate places. The exceptions are ia64 and ppc which have their own (presumably optimised) versions. Signed-off-by: Stephen Rothwell <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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22 changed files with 69 additions and 312 deletions
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@ -150,20 +150,6 @@ struct sparc_phys_banks {
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extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS];
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/* Pure 2^n version of get_order */
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static __inline__ int get_order(unsigned long size)
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{
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int order;
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size = (size-1) >> (PAGE_SHIFT-1);
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order = -1;
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do {
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size >>= 1;
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order++;
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} while (size);
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return order;
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}
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#endif /* !(__ASSEMBLY__) */
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#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
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@ -171,4 +157,6 @@ static __inline__ int get_order(unsigned long size)
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#endif /* !(__KERNEL__) */
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#include <asm-generic/page.h>
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#endif /* !(_SPARC64_PAGE_H) */
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