powerpc: Remove static branch prediction in atomic{, 64}_add_unless

[Michael Ellerman]

On Mon, 2016-03-10 at 06:03:03 UTC, Anton Blanchard wrote:
> From: Anton Blanchard <anton at samba.org>
> 
> I see quite a lot of static branch mispredictions on a simple
> web serving workload. The issue is in __atomic_add_unless(), called
> from _atomic_dec_and_lock(). There is no obvious common case, so it
> is better to let the hardware predict the branch.
> 
> Signed-off-by: Anton Blanchard <anton at samba.org>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/61e98ebff3ba3d3b17e999dc483c26

cheers