Re: [PATCH] x86 rwsem optimization extreme

Zachary Amsden
2010-02-18T08:25:34Z

>
> Zachary Amsden<zamsden@redhat.com> writes
>> Incidentally, the cost of putting all the rwsem code inline, using the
>> straightforward approach, for git-tip, using defconfig on x86_64 is
>> 3565 bytes / 20971778 bytes total, or 0.0168%, using gcc 4.4.3.
>>
> The nice advantage of putting lock code inline is that it gets
> accounted to the caller in all profilers.
>
> -Andi
>
>

Unfortunately, only for the uncontended case. The hot case still ends
up in a call to the lock text section.

Zach