Re: [PATCH] x86: generic versions of find_first_(zero_)bit, convert i386

On Mon, 31 Mar 2008 19:15:06 +0200
Alexander van Heukelum <heukelum@xxxxxxxxxxxxx> 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@xxxxxxxxxxx>


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