Malloc improvements

[Florian Weimer]

On 07/12/2016 02:10 AM, Anton Blanchard wrote:
> Hi,
>
> It's great to see the current focus on improving malloc. One thing that
> would really help POWER is reducing the number of locks and atomics in
> the fast path. Right now we have 3 in the malloc fastpath and 2 in
> free. These add up.

Does the hook variable read count as an atomic operation in this sense?

Thanks,
Florian