[Intel-gfx] [CI 08/13] drm/i915/perf: implement active wait for noa configurations

2019-09-09 Thread Lionel Landwerlin
NOA configuration take some amount of time to apply. That amount of time depends on the size of the GT. There is no documented time for this. For example, past experimentations with powergating configuration changes seem to indicate a 60~70us delay. We go with 500us as default for now which should

[Intel-gfx] [CI 08/13] drm/i915/perf: implement active wait for noa configurations

2019-09-09 Thread Lionel Landwerlin
NOA configuration take some amount of time to apply. That amount of time depends on the size of the GT. There is no documented time for this. For example, past experimentations with powergating configuration changes seem to indicate a 60~70us delay. We go with 500us as default for now which should