diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_guc_submission.c | 18 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_lrc.c | 41 |
2 files changed, 36 insertions, 23 deletions
diff --git a/drivers/gpu/drm/i915/intel_guc_submission.c b/drivers/gpu/drm/i915/intel_guc_submission.c index a81f04d46e87..4874a212754c 100644 --- a/drivers/gpu/drm/i915/intel_guc_submission.c +++ b/drivers/gpu/drm/i915/intel_guc_submission.c @@ -791,19 +791,8 @@ done: static void guc_dequeue(struct intel_engine_cs *engine) { - unsigned long flags; - bool submit; - - local_irq_save(flags); - - spin_lock(&engine->timeline.lock); - submit = __guc_dequeue(engine); - spin_unlock(&engine->timeline.lock); - - if (submit) + if (__guc_dequeue(engine)) guc_submit(engine); - - local_irq_restore(flags); } static void guc_submission_tasklet(unsigned long data) @@ -812,6 +801,9 @@ static void guc_submission_tasklet(unsigned long data) struct intel_engine_execlists * const execlists = &engine->execlists; struct execlist_port *port = execlists->port; struct i915_request *rq; + unsigned long flags; + + spin_lock_irqsave(&engine->timeline.lock, flags); rq = port_request(port); while (rq && i915_request_completed(rq)) { @@ -835,6 +827,8 @@ static void guc_submission_tasklet(unsigned long data) if (!execlists_is_active(execlists, EXECLISTS_ACTIVE_PREEMPT)) guc_dequeue(engine); + + spin_unlock_irqrestore(&engine->timeline.lock, flags); } static struct i915_request * diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 593999c1e2aa..15345e74d8ce 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -356,13 +356,8 @@ execlists_unwind_incomplete_requests(struct intel_engine_execlists *execlists) { struct intel_engine_cs *engine = container_of(execlists, typeof(*engine), execlists); - unsigned long flags; - - spin_lock_irqsave(&engine->timeline.lock, flags); __unwind_incomplete_requests(engine); - - spin_unlock_irqrestore(&engine->timeline.lock, flags); } static inline void @@ -1233,9 +1228,13 @@ static void execlists_schedule(struct i915_request *request, engine = sched_lock_engine(node, engine); + /* Recheck after acquiring the engine->timeline.lock */ if (prio <= node->attr.priority) continue; + if (i915_sched_node_signaled(node)) + continue; + node->attr.priority = prio; if (!list_empty(&node->link)) { if (last != engine) { @@ -1244,14 +1243,34 @@ static void execlists_schedule(struct i915_request *request, } GEM_BUG_ON(pl->priority != prio); list_move_tail(&node->link, &pl->requests); + } else { + /* + * If the request is not in the priolist queue because + * it is not yet runnable, then it doesn't contribute + * to our preemption decisions. On the other hand, + * if the request is on the HW, it too is not in the + * queue; but in that case we may still need to reorder + * the inflight requests. + */ + if (!i915_sw_fence_done(&sched_to_request(node)->submit)) + continue; } - if (prio > engine->execlists.queue_priority && - i915_sw_fence_done(&sched_to_request(node)->submit)) { - /* defer submission until after all of our updates */ - __update_queue(engine, prio); - tasklet_hi_schedule(&engine->execlists.tasklet); - } + if (prio <= engine->execlists.queue_priority) + continue; + + /* + * If we are already the currently executing context, don't + * bother evaluating if we should preempt ourselves. + */ + if (sched_to_request(node)->global_seqno && + i915_seqno_passed(port_request(engine->execlists.port)->global_seqno, + sched_to_request(node)->global_seqno)) + continue; + + /* Defer (tasklet) submission until after all of our updates. */ + __update_queue(engine, prio); + tasklet_hi_schedule(&engine->execlists.tasklet); } spin_unlock_irq(&engine->timeline.lock); |