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powerpc: Simplify 4k/64k copy_page logic

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To make it easier to add optimised versions of copy_page, remove
the 4kB loop for 64kB pages and just do all the work in copy_page.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Anton Blanchard
2011-05-08 21:18:38 +00:00
committed by Benjamin Herrenschmidt
parent 37e0c21e9b
commit d988f0e3f8
3 changed files with 6 additions and 25 deletions
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19
arch/powerpc/include/asm/page_64.h
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@@ -59,24 +59,7 @@ static __inline__ void clear_page(void *addr)
: "ctr", "memory");
}
extern void copy_4K_page(void *to, void *from);
#ifdef CONFIG_PPC_64K_PAGES
static inline void copy_page(void *to, void *from)
{
unsigned int i;
for (i=0; i < (1 << (PAGE_SHIFT - 12)); i++) {
copy_4K_page(to, from);
to += 4096;
from += 4096;
}
}
#else /* CONFIG_PPC_64K_PAGES */
static inline void copy_page(void *to, void *from)
{
copy_4K_page(to, from);
}
#endif /* CONFIG_PPC_64K_PAGES */
extern void copy_page(void *to, void *from);
/* Log 2 of page table size */
extern u64 ppc64_pft_size;