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SubjectRe: [PATCH] x86: generic versions of find_first_(zero_)bit, convert i386
On Mon, 31 Mar 2008 19:15:06 +0200
Alexander van Heukelum <heukelum@mailshack.com> wrote:

> Generic versions of __find_first_bit and __find_first_zero_bit
> are introduced as simplified versions of __find_next_bit and
> __find_next_zero_bit. Their compilation and use are guarded by
> a new config variable GENERIC_FIND_FIRST_BIT.
>
> The generic versions of find_first_bit and find_first_zero_bit
> are implemented in terms of the newly introduced __find_first_bit
> and __find_first_zero_bit.
>
> This patch also converts i386 to the generic functions. The text
> size shrinks slightly due to uninlining of the find_*_bit functions.
>
> text data bss dec hex filename
> 4764939 480324 622592 5867855 59894f vmlinux (i386 defconfig before)
> 4764645 480324 622592 5867561 598829 vmlinux (i386 defconfig after)
>
> Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
>

Size isn't everything, what is the performance difference?


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