+config DRM_I915_USERFAULT_AUTOSUSPEND
+ int "Runtime autosuspend delay for userspace GGTT mmaps (ms)"
+ default 250 # milliseconds
+ help
+ On runtime suspend, as we suspend the device, we have to revoke
+ userspace GGTT mmaps and force userspace to take a pagefault on
+ their next access. The revocation and subsequent recreation of
+ the GGTT mmap can be very slow and so we impose a small hysteris
+ that complements the runtime-pm autosuspend and provides a lower
+ floor on the autosuspend delay.
+
+ May be 0 to disable the extra delay and solely use the device level
+ runtime pm autosuspend delay tunable.
+
config DRM_I915_SPIN_REQUEST
int
default 5 # microseconds