[Intel-gfx] [PATCH 1/4 v4] drm/i915: timeout parameter for seqno wait

[Eugeni Dodonov]

On 05/11/2012 05:54 PM, Ben Widawsky wrote:
> Insert a wait parameter in the code so we can possibly timeout on a
> seqno wait if need be. The code should be functionally the same as
> before because all the callers will continue to retry if an arbitrary
> timeout elapses.
>
> We'd like to have nanosecond granularity, but the only way to do this is
> with hrtimer, and that doesn't fit well with the needs of this code.
>
> v2: Fix rebase error (Chris)
> Return proper time even in wedged + signal case (Chris + Ben)
> Use timespec constructs (Ben)
> Didn't take Daniel's advice regarding the Frankenstein-ness of the
>    function. I did try his advice, but in the end I liked the way the
>    original code looked, better.
>
> v3: Make wakeups far less frequent for infinite waits (Chris)
>
> v4: Remove dummy_wait variable (Daniel)
> Use raw monotonic time instead of jiffies (made the code a bit cleaner) (Ben)
> Added a couple of warnings (Ben)
>
> Signed-off-by: Ben Widawsky<ben at bwidawsk.net>

I couldn't find much to bikeshed here except for question on patch 3 and 
one small typo on Patch 4. So for the series:

Reviewed-by: Eugeni Dodonov <eugeni.dodonov at intel.com>