Re: Increase page fault rate by prezeroing V1 [1/3]: Introduce __GFP_ZERO

[Chuck Ebbert]

On Tue, 21 Dec 2004 at 11:56:07 -0800 Christoph Lameter wrote:

> --- linux-2.6.9.orig/include/asm-i386/page.h  2004-12-17 14:40:16.000000000 -0800
> +++ linux-2.6.9/include/asm-i386/page.h       2004-12-21 10:19:37.000000000 -0800
> @@ -20,6 +20,7 @@
> 
>  #define clear_page(page)     mmx_clear_page((void *)(page))
>  #define copy_page(to,from)   mmx_copy_page(to,from)
> +#define zero_page(page, order)       mmx_zero_page(page, order)
> 
>  #else
> 
> @@ -29,6 +30,7 @@
>   */
> 
>  #define clear_page(page)     memset((void *)(page), 0, PAGE_SIZE)
> +#define zero_page(page, ordeR)       memset((void *)(page), 0, PAGE_SIZE << order)

 Oops - - - - - - - - - - - - -^

>  #define copy_page(to,from)   memcpy((void *)(to), (void *)(from), PAGE_SIZE)
> 
> #endif

--
Please take it as a sign of my infinite respect for you,
that I insist on you doing all the work.
                                        -- Rusty Russell
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