[Bug 110848] Everything using GPU gets stuck after running+killing parallel Media loads (after running 3D benchmarks)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110848

--- Comment #20 from Eero Tamminen <eero.t.tamminen at intel.com> ---
(In reply to Chris Wilson from comment #19)
> e8f06c34fa..8991a80f85 does contain more fences, and so increased
> opportunity for a missed wakeup. They would however be shown as processes
> stuck waiting for a fence inside i915; whereas what your kernel stacks show
> are processes stuck waiting for page io (if I read that correctly, generally
> from __dput).

Do you have detailed instructions on how to enable lockdep (google didn't
tell)?

I.e. hat *specific* kernel config options need to be enabled, what set on
kernel command line etc?

I could give it a try after I come from summer vacation, if this is still
happening.

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