[RFC 1/2][BZ #12674] Remove assembly versions of semaphores.

[Ondřej Bílka]

On Fri, Dec 06, 2013 at 12:13:11PM -0500, David Miller wrote:
> From: Ondřej Bílka <neleai@seznam.cz>
> Date: Fri, 6 Dec 2013 11:36:26 +0100
> 
> > I looked what are other architectures that do this, main one is sparc,
> > David could you comment on that?
> 
> You can't just delete this sparc code, it's using a custom type, do
> you see the casts in the sparc C code?

Then these need to be checked indepenently for race. On 64-bit these
should not be much problem as we can update 8 bytes at once (see later
mail).