DEF_SPU_TIMESLICE
SPUSCHED_TICK, MIN_SPU_TIMESLICE, DEF_SPU_TIMESLICE);
ctx->time_slice = SCALE_PRIO(DEF_SPU_TIMESLICE * 4, ctx->prio);
ctx->time_slice = SCALE_PRIO(DEF_SPU_TIMESLICE, ctx->prio);