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4912d04193
The render P-state handling code requires reading from a GT register. This means that FORCEWAKE must be written to, a resource which is shared and should be protected by struct_mutex. Hence we can not manipulate that register from within the interrupt handling and so must delegate the task to a workqueue. Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Keith Packard <keithp@keithp.com> |
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