Based on kernel version 6.11
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | .. SPDX-License-Identifier: GPL-2.0+ ========================= drm/Panfrost Mali Driver ========================= .. _panfrost-usage-stats: Panfrost DRM client usage stats implementation ============================================== The drm/Panfrost driver implements the DRM client usage stats specification as documented in :ref:`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. Users must bear in mind that engine and cycle sampling are disabled by default, because of power saving concerns. `fdinfo` users and benchmark applications which query the fdinfo file must make sure to toggle the job profiling status of the driver by writing into the appropriate sysfs node:: echo <N> > /sys/bus/platform/drivers/panfrost/[a-f0-9]*.gpu/profiling Where `N` is either `0` or `1`, depending on the desired enablement status. |