[igt-dev] [PATCH i-g-t] tests/kms_rotation_crc: Speed up by not testing every format

[Chris Wilson]

Quoting Ville Syrjala (2020-02-14 16:55:02)
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> As we did with kms_plane_scaling let's not test every pixel
> format for rotation fails either. Instead we test each "class"
> of formats as defined by igt_reduce_format(). The hope being
> that there are no specific bugs in the hw for different
> swizzles of the same underlying base format.
> 
> On KBL:
> $ time ./build/tests/kms_rotation_crc --r sprite-rotation-90
> - real  0m39,851s
> - user  0m1,037s
> - sys   0m12,895s
> + real  0m16,773s
> + user  0m0,357s
> + sys   0m5,475s
> 
> As per the usual recipe we add an --extended cmdline knob to
> force the full coverage.
> 
> Only cuts ~30% of the total kms_rotation_crc runtime though.
> There are other subtests which take over 80s on this particular
> machine, so further work is clearly required to get the testing
> time to sane levels.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris