drm/msm: Add param for userspace to query suspend count
Performance counts, and ALWAYS_ON counters used for capturing GPU timestamps, lose their state across suspend/resume cycles. Userspace tooling for performance monitoring needs to be aware of this. For example, after a suspend userspace needs to recalibrate it's offset between CPU and GPU time. Signed-off-by:Rob Clark <robdclark@chromium.org> Acked-by:
Jordan Crouse <jordan@cosmicpenguin.net> Link: https://lore.kernel.org/r/20210325012358.1759770-3-robdclark@gmail.com Signed-off-by:
Rob Clark <robdclark@chromium.org>
parent
f5b1a878
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