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[PATCH] mm: consolidate get_order

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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 <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Stephen Rothwell
2005-09-03 15:54:30 -07:00
committed by Linus Torvalds
parent 28ae55c98e
commit fd4fd5aac1
22 changed files with 69 additions and 312 deletions
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include/asm-m68knommu/page.h
+2 -14
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@@ -48,20 +48,6 @@ typedef struct { unsigned long pgprot; } pgprot_t;
/* to align the pointer to the (next) page boundary */
#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
/* Pure 2^n version of get_order */
extern __inline__ int get_order(unsigned long size)
{
int order;
size = (size-1) >> (PAGE_SHIFT-1);
order = -1;
do {
size >>= 1;
order++;
} while (size);
return order;
}
extern unsigned long memory_start;
extern unsigned long memory_end;
@@ -93,4 +79,6 @@ extern unsigned long memory_end;
#endif /* __KERNEL__ */
#include <asm-generic/page.h>
#endif /* _M68KNOMMU_PAGE_H */