drm/i915: Move active tracking to i915_sched_engine

Move active request tracking and its lock to i915_sched_engine. This
lock is also the submission lock so having it in the i915_sched_engine
is the correct place.

v3:
 (Jason Ekstrand)
  Add kernel doc
v6:
  Rebase

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.comk>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210618010638.98941-5-matthew.brost@intel.com

1 files changed, 16 insertions, 16 deletions

diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c
index 1014c71cf7f5..bd58198735dc 100644
--- a/drivers/gpu/drm/i915/i915_request.c
+++ b/drivers/gpu/drm/i915/i915_request.c
@@ -272,11 +272,11 @@ i915_request_active_engine(struct i915_request *rq,
 	 * check that we have acquired the lock on the final engine.
 	 */
 	locked = READ_ONCE(rq->engine);
-	spin_lock_irq(&locked->active.lock);
+	spin_lock_irq(&locked->sched_engine->lock);
 	while (unlikely(locked != (engine = READ_ONCE(rq->engine)))) {
-		spin_unlock(&locked->active.lock);
+		spin_unlock(&locked->sched_engine->lock);
 		locked = engine;
-		spin_lock(&locked->active.lock);
+		spin_lock(&locked->sched_engine->lock);
 	}
 
 	if (i915_request_is_active(rq)) {
@@ -285,7 +285,7 @@ i915_request_active_engine(struct i915_request *rq,
 		ret = true;
 	}
 
-	spin_unlock_irq(&locked->active.lock);
+	spin_unlock_irq(&locked->sched_engine->lock);
 
 	return ret;
 }
@@ -302,10 +302,10 @@ static void remove_from_engine(struct i915_request *rq)
 	 * check that the rq still belongs to the newly locked engine.
 	 */
 	locked = READ_ONCE(rq->engine);
-	spin_lock_irq(&locked->active.lock);
+	spin_lock_irq(&locked->sched_engine->lock);
 	while (unlikely(locked != (engine = READ_ONCE(rq->engine)))) {
-		spin_unlock(&locked->active.lock);
-		spin_lock(&engine->active.lock);
+		spin_unlock(&locked->sched_engine->lock);
+		spin_lock(&engine->sched_engine->lock);
 		locked = engine;
 	}
 	list_del_init(&rq->sched.link);
@@ -316,7 +316,7 @@ static void remove_from_engine(struct i915_request *rq)
 	/* Prevent further __await_execution() registering a cb, then flush */
 	set_bit(I915_FENCE_FLAG_ACTIVE, &rq->fence.flags);
 
-	spin_unlock_irq(&locked->active.lock);
+	spin_unlock_irq(&locked->sched_engine->lock);
 
 	__notify_execute_cb_imm(rq);
 }
@@ -637,7 +637,7 @@ bool __i915_request_submit(struct i915_request *request)
 	RQ_TRACE(request, "\n");
 
 	GEM_BUG_ON(!irqs_disabled());
-	lockdep_assert_held(&engine->active.lock);
+	lockdep_assert_held(&engine->sched_engine->lock);
 
 	/*
 	 * With the advent of preempt-to-busy, we frequently encounter
@@ -649,7 +649,7 @@ bool __i915_request_submit(struct i915_request *request)
 	 *
 	 * We must remove the request from the caller's priority queue,
 	 * and the caller must only call us when the request is in their
-	 * priority queue, under the active.lock. This ensures that the
+	 * priority queue, under the sched_engine->lock. This ensures that the
 	 * request has *not* yet been retired and we can safely move
 	 * the request into the engine->active.list where it will be
 	 * dropped upon retiring. (Otherwise if resubmit a *retired*
@@ -694,7 +694,7 @@ bool __i915_request_submit(struct i915_request *request)
 	result = true;
 
 	GEM_BUG_ON(test_bit(I915_FENCE_FLAG_ACTIVE, &request->fence.flags));
-	list_move_tail(&request->sched.link, &engine->active.requests);
+	list_move_tail(&request->sched.link, &engine->sched_engine->requests);
 active:
 	clear_bit(I915_FENCE_FLAG_PQUEUE, &request->fence.flags);
 	set_bit(I915_FENCE_FLAG_ACTIVE, &request->fence.flags);
@@ -724,11 +724,11 @@ void i915_request_submit(struct i915_request *request)
 	unsigned long flags;
 
 	/* Will be called from irq-context when using foreign fences. */
-	spin_lock_irqsave(&engine->active.lock, flags);
+	spin_lock_irqsave(&engine->sched_engine->lock, flags);
 
 	__i915_request_submit(request);
 
-	spin_unlock_irqrestore(&engine->active.lock, flags);
+	spin_unlock_irqrestore(&engine->sched_engine->lock, flags);
 }
 
 void __i915_request_unsubmit(struct i915_request *request)
@@ -742,7 +742,7 @@ void __i915_request_unsubmit(struct i915_request *request)
 	RQ_TRACE(request, "\n");
 
 	GEM_BUG_ON(!irqs_disabled());
-	lockdep_assert_held(&engine->active.lock);
+	lockdep_assert_held(&engine->sched_engine->lock);
 
 	/*
 	 * Before we remove this breadcrumb from the signal list, we have
@@ -775,11 +775,11 @@ void i915_request_unsubmit(struct i915_request *request)
 	unsigned long flags;
 
 	/* Will be called from irq-context when using foreign fences. */
-	spin_lock_irqsave(&engine->active.lock, flags);
+	spin_lock_irqsave(&engine->sched_engine->lock, flags);
 
 	__i915_request_unsubmit(request);
 
-	spin_unlock_irqrestore(&engine->active.lock, flags);
+	spin_unlock_irqrestore(&engine->sched_engine->lock, flags);
 }
 
 static void __cancel_request(struct i915_request *rq)