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The preemption request and timeout is used for higher priority context or kill hung context and reset hardware engine. The preempt timeout can be adjusted per-engine class using, /sys/class/drm/cardX/device/tileN/gtN/engines/ccs/preempt_timeout_us and can be disabled by setting it to 0. V7: - Rebase V6: - Rebase to use s/xe_engine/xe_hw_engine/ - Matt V5: - Remove timeout validation, not relevant - Niranjana V4: - Rebase to replace hw engine with eclass interface V3: - Rebase to per class engine props interface V2: - Rebase - Update commit message to add tile Reviewed-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>