[Bug 70747] igt/ZZ_missed_irq causes [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... render ring idle

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70747

--- Comment #4 from lu hua <huax.lu at intel.com> ---
(In reply to comment #2)
> Created attachment 87973 [details] [review]
> handle fake missed interrupts as a simulated hang, too
> 
> With this patch we should properly mark the simulated hangs caused by
> ZZ_missed_irqs as such with the usual "Simulated gpu hang, resetting
> stop_rings" dmesg output. Please test.

Test this patch, "Simulated gpu hang, resetting stop_rings" doesn't appear in
dmesg.

dmesg:
[   66.702045] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed...
bsd ring idle
[   70.709623] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed...
render ring idle

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