Lower glxgears FPS performance after suspend/resume

[Bráulio Bhavamitra]

Hi all,

Using raven ridge and latest amd-staging-drm-next available now.

As you can see below, the performance after boot is about 7k FPS and 6k FPS
after the first resume.

The hungs also are more often after resuming.

Regards,
bráulio

7127 frames in 5.0 seconds = 7425.359 FPS
36318 frames in 5.0 seconds = 7263.575 FPS
40206 frames in 5.0 seconds = 8041.091 FPS
37629 frames in 5.0 seconds = 7525.681 FPS
38839 frames in 5.0 seconds = 7767.696 FPS
37469 frames in 5.0 seconds = 7493.695 FPS
40582 frames in 5.0 seconds = 8116.345 FPS
39520 frames in 5.0 seconds = 7903.875 FPS
35943 frames in 5.0 seconds = 7188.529 FPS
37354 frames in 5.0 seconds = 7470.655 FPS
38751 frames in 5.0 seconds = 7750.033 FPS
37175 frames in 5.0 seconds = 7434.853 FPS
36570 frames in 5.0 seconds = 7313.902 FPS
38537 frames in 5.0 seconds = 7707.272 FPS
37165 frames in 5.0 seconds = 7432.987 FPS
33773 frames in 5.0 seconds = 6754.534 FPS
38359 frames in 5.0 seconds = 7671.739 FPS
35020 frames in 5.0 seconds = 7003.940 FPS
34155 frames in 5.0 seconds = 6830.799 FPS
22970 frames in 11.3 seconds = 2040.122 FPS
34024 frames in 5.0 seconds = 6804.761 FPS
30728 frames in 5.0 seconds = 6145.559 FPS
30999 frames in 5.0 seconds = 6199.678 FPS
31189 frames in 5.0 seconds = 6237.743 FPS
30623 frames in 5.0 seconds = 6124.375 FPS
31480 frames in 5.0 seconds = 6295.896 FPS
30943 frames in 5.0 seconds = 6188.538 FPS
30844 frames in 5.0 seconds = 6168.606 FPS
30546 frames in 5.0 seconds = 6109.063 FPS
31515 frames in 5.0 seconds = 6302.877 FPS
30566 frames in 5.0 seconds = 6113.185 FPS
31078 frames in 5.0 seconds = 6215.562 FPS
30934 frames in 5.0 seconds = 6186.748 FPS
30254 frames in 5.0 seconds = 6050.674 FPS
30657 frames in 5.0 seconds = 6131.263 FPS
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