mirror of https://github.com/torvalds/linux.git
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> |
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