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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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16
include/asm-mips/page.h
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@@ -103,20 +103,6 @@ typedef struct { unsigned long pgprot; } pgprot_t;
#define __pgd(x) ((pgd_t) { (x) } )
#define __pgprot(x) ((pgprot_t) { (x) } )
/* Pure 2^n version of get_order */
static __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;
}
#endif /* !__ASSEMBLY__ */
/* to align the pointer to the (next) page boundary */
@@ -148,4 +134,6 @@ static __inline__ int get_order(unsigned long size)
#define WANT_PAGE_VIRTUAL
#endif
#include <asm-generic/page.h>
#endif /* _ASM_PAGE_H */