[Bug 89123] [SKL]igt/pm_rps/blocking fail

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89123

lu hua <huax.lu at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW

--- Comment #2 from lu hua <huax.lu at intel.com> ---
(In reply to Jesse Barnes from comment #1)
> Ok I see this on my SKL too, adding an extra delay after the quiescent_gpu()
> calls in the test makes the failure go away though.
> 
> Akash's patches would likely help as well, since the GPU freq would drop
> down faster probably.
> 
> Can you try this series?
> http://lists.freedesktop.org/archives/intel-gfx/2015-February/059556.html

Apply these patches, it works well.

output:
IGT-Version: 1.9-g50158de (x86_64) (Linux: 4.0.0-rc2_kcloud_364c08_20150309+
x86_64)
Subtest blocking: SUCCESS (35.037s)

real    0m35.056s
user    0m0.570s
sys     0m1.878s

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