drm/Panfrost Mali Driver

Panfrost DRM client usage stats implementation

The drm/Panfrost driver implements the DRM client usage stats specification as documented in DRM client usage stats.

Example of the output showing the implemented key value pairs and entirety of the currently possible format options:


pos: 0 flags: 02400002 mnt_id: 27 ino: 531 drm-driver: panfrost drm-client-id: 14 drm-engine-fragment: 1846584880 ns drm-cycles-fragment: 1424359409 drm-maxfreq-fragment: 799999987 Hz drm-curfreq-fragment: 799999987 Hz drm-engine-vertex-tiler: 71932239 ns drm-cycles-vertex-tiler: 52617357 drm-maxfreq-vertex-tiler: 799999987 Hz drm-curfreq-vertex-tiler: 799999987 Hz drm-total-memory: 290 MiB drm-shared-memory: 0 MiB drm-active-memory: 226 MiB drm-resident-memory: 36496 KiB drm-purgeable-memory: 128 KiB

Possible drm-engine- key names are: fragment, and vertex-tiler. drm-curfreq- values convey the current operating frequency for that engine.