[Intel-gfx] [CI] drm/i915/gt: Refactor hangcheck selftest to use igt_spinner

[Andi Shyti]

Hi Jonathan,

> > The hangcheck live selftest contains duplicate declarations of some
> > functions that already exist in igt_spinner.c, such as the creation and
> > deconstruction of a spinning batch buffer (spinner) that hangs an engine.
> > It's undesireable to have such code duplicated, as the requirements for
> > the spinner may change with hardware updates, necessitating both
> > execution paths be updated.  To avoid this, have the hangcheck live
> > selftest use the declaration from igt_spinner.  This eliminates the need
> > for the declarations in the selftest itself, as well as the associated
> > local helper structures, so we can erase those.
> > 
> > Suggested-by: Matt Roper <matthew.d.roper at intel.com>
> > Signed-off-by: Jonathan Cavitt <jonathan.cavitt at intel.com>
> 
> 
> Test fails with -62 (ETIME) on intel_selftest_wait_for_rq
> It looks like the cause might be me calling intel_context_put too early?
> Let me move those calls to later and see if that helps.
> Give me some time to implement those changes.

Thanks!
Andi