try_preempt_state
if (!try_preempt_state(a5xx_gpu, PREEMPT_NONE, PREEMPT_START))
if (!try_preempt_state(a5xx_gpu, PREEMPT_TRIGGERED, PREEMPT_PENDING))
if (!try_preempt_state(a5xx_gpu, PREEMPT_TRIGGERED, PREEMPT_FAULTED))
if (!try_preempt_state(a6xx_gpu, PREEMPT_TRIGGERED, PREEMPT_PENDING))
if (!try_preempt_state(a6xx_gpu, PREEMPT_NONE, PREEMPT_START)) {
if (!try_preempt_state(a6xx_gpu, PREEMPT_TRIGGERED, PREEMPT_FAULTED))