__i915_spin_request() sucks

[Jens Axboe]

On 11/13/2015 09:13 AM, Mike Galbraith wrote:
> On Fri, 2015-11-13 at 08:36 -0700, Jens Axboe wrote:
>> Previous patch was obvious pre-coffee crap, this should work for using
>> ktime to spin max 1usec.
>
> 1us seems a tad low.  I doubt the little wooden gears and pulleys of my
> core2 Toshiba Satellite lappy can get one loop ground out in a usec :)

Maybe it is, it's based off the original intent of the function, though. 
See the original commit referenced.

-- 
Jens Axboe