29.06.2020 13:27, Mikko Perttunen пишет: ... >>>> 3. Sync points should be properly refcounted. Job's sync points >>>> shouldn't be re-used while job is alive. >>>> >>>> 4. The job's sync point can't be re-used after job's submission (UAPI >>>> constraint!). Userspace must free sync point and allocate a new one for >>>> the next job submission. And now we: >>>> >>>> - Know that job's sync point is always in a healthy state! >>>> >>>> - We're not limited by a number of physically available hardware >>>> sync >>>> points! Allocation should block until free sync point is available. It also occurred to me that if allocation is blocking and if there is a need to allocate multiple sync points for a job, then the IOCTL should be able to allocate multiple sync points at once. This will prevent interlock situation where two context could block on each other.
