[PATCH v3 0/8] drm/i915: PREEMPT_RT related fixups.

[Sebastian Andrzej Siewior]

On 2024-10-02 19:58:08 [+0300], Ville Syrjälä wrote:
> > These patches were not picked. Did I forget something or was this just
> > overseen?
> 
> This looks quite poorly justified. Eg. you seem to be now
> leaving interrupts enabled (and even preemption enabled I
> guess) when we're racing against the raster beam. On first
> blush that seems like a recipe for failure.

I can't really parse this. I may leave interrupts enabled in vblanc code
(the first two patches).

> First step would be to set CONFIG_DRM_I915_DEBUG_VBLANK_EVADE=y,
> run a bunch of tests that stress the display stuff (eg.
> kms_atomic_transitions and other stuff from igt, and also
> some real workloads) and probably throw in a bunch of
> other load/perturbance at the system to make life hard.
> After the system has been sufficiently hammered one can
> compare sys/kernel/debug/dri/0/crtc-*/i915_update_info
> against a baseline. Bonus points for doing it on a potato.

So you have a specific test for me to run?
 
Sebastian