On Mon, Aug 16, 2021 at 06:51:33AM -0700, Matthew Brost wrote:
> A subsequent patch will flip the locking hierarchy from
> ce->guc_state.lock -> sched_engine->lock to sched_engine->lock ->
> ce->guc_state.lock. As such we need to release the submit fence for a
> request from an IRQ to break a lock
A subsequent patch will flip the locking hierarchy from
ce->guc_state.lock -> sched_engine->lock to sched_engine->lock ->
ce->guc_state.lock. As such we need to release the submit fence for a
request from an IRQ to break a lock inversion - i.e. the fence must be
release went holding ce->guc_state.l
