Files
Max Zhen 489a8539ca accel/amdxdna: Expose NPU device busy time via DRM fdinfo
Expose NPU device engine busy time through DRM fdinfo to enable
standardized userspace monitoring and profiling.

Add support for reporting per-engine busy time in nanoseconds via fdinfo
using the "drm-engine-npu" key. The value reflects the accumulated NPU
device execution time for a given process, allowing userspace tools to
observe NPU device utilization without driver-specific ioctls.

Signed-off-by: Max Zhen <max.zhen@amd.com>
Reviewed-by: Lizhi Hou <lizhi.hou@amd.com>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20261012180808.2548697-1-max.zhen@amd.com
2026-10-14 08:49:09 -07:00
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