[PATCH 28/58] drm/i915: Move scheduler flags

Chris Wilson chris at chris-wilson.co.uk
Sun Jan 31 23:53:22 UTC 2021


Start extracting the scheduling flags from the engine. We begin with its
own existence.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gt/intel_engine.h        |  6 ++++++
 drivers/gpu/drm/i915/gt/intel_engine_types.h  | 21 +++++++------------
 .../drm/i915/gt/intel_execlists_submission.c  |  6 +++++-
 .../gpu/drm/i915/gt/uc/intel_guc_submission.c |  2 +-
 drivers/gpu/drm/i915/i915_request.h           |  2 +-
 drivers/gpu/drm/i915/i915_scheduler.c         |  2 +-
 drivers/gpu/drm/i915/i915_scheduler_types.h   | 10 +++++++++
 7 files changed, 31 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_engine.h b/drivers/gpu/drm/i915/gt/intel_engine.h
index c530839627bb..4f0163457aed 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine.h
@@ -261,6 +261,12 @@ intel_engine_has_heartbeat(const struct intel_engine_cs *engine)
 	return READ_ONCE(engine->props.heartbeat_interval_ms);
 }
 
+static inline bool
+intel_engine_has_scheduler(struct intel_engine_cs *engine)
+{
+	return i915_sched_is_active(intel_engine_get_scheduler(engine));
+}
+
 static inline void
 intel_engine_kick_scheduler(struct intel_engine_cs *engine)
 {
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h
index 6b0bde292916..a3024a0de1de 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h
@@ -440,14 +440,13 @@ struct intel_engine_cs {
 
 #define I915_ENGINE_USING_CMD_PARSER BIT(0)
 #define I915_ENGINE_SUPPORTS_STATS   BIT(1)
-#define I915_ENGINE_HAS_SCHEDULER    BIT(2)
-#define I915_ENGINE_HAS_PREEMPTION   BIT(3)
-#define I915_ENGINE_HAS_SEMAPHORES   BIT(4)
-#define I915_ENGINE_HAS_TIMESLICES   BIT(5)
-#define I915_ENGINE_NEEDS_BREADCRUMB_TASKLET BIT(6)
-#define I915_ENGINE_IS_VIRTUAL       BIT(7)
-#define I915_ENGINE_HAS_RELATIVE_MMIO BIT(8)
-#define I915_ENGINE_REQUIRES_CMD_PARSER BIT(9)
+#define I915_ENGINE_HAS_PREEMPTION   BIT(2)
+#define I915_ENGINE_HAS_SEMAPHORES   BIT(3)
+#define I915_ENGINE_HAS_TIMESLICES   BIT(4)
+#define I915_ENGINE_NEEDS_BREADCRUMB_TASKLET BIT(5)
+#define I915_ENGINE_IS_VIRTUAL       BIT(6)
+#define I915_ENGINE_HAS_RELATIVE_MMIO BIT(7)
+#define I915_ENGINE_REQUIRES_CMD_PARSER BIT(8)
 	unsigned int flags;
 
 	/*
@@ -530,12 +529,6 @@ intel_engine_supports_stats(const struct intel_engine_cs *engine)
 	return engine->flags & I915_ENGINE_SUPPORTS_STATS;
 }
 
-static inline bool
-intel_engine_has_scheduler(const struct intel_engine_cs *engine)
-{
-	return engine->flags & I915_ENGINE_HAS_SCHEDULER;
-}
-
 static inline bool
 intel_engine_has_preemption(const struct intel_engine_cs *engine)
 {
diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
index e86b34e71a0a..76d76d67488b 100644
--- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
@@ -2917,7 +2917,6 @@ logical_ring_default_vfuncs(struct intel_engine_cs *engine)
 		 */
 	}
 
-	engine->flags |= I915_ENGINE_HAS_SCHEDULER;
 	engine->flags |= I915_ENGINE_SUPPORTS_STATS;
 	if (!intel_vgpu_active(engine->i915)) {
 		engine->flags |= I915_ENGINE_HAS_SEMAPHORES;
@@ -2985,6 +2984,7 @@ int intel_execlists_submission_setup(struct intel_engine_cs *engine)
 	engine->sched.is_executing = execlists_is_executing;
 	engine->sched.show = execlists_show;
 	tasklet_setup(&engine->sched.tasklet, execlists_submission_tasklet);
+	__set_bit(I915_SCHED_ACTIVE_BIT, &engine->sched.flags);
 	timer_setup(&engine->execlists.timer, execlists_timeslice, 0);
 	timer_setup(&engine->execlists.preempt, execlists_preempt, 0);
 
@@ -3390,6 +3390,7 @@ intel_execlists_create_virtual(struct intel_engine_cs **siblings,
 			       unsigned int count)
 {
 	struct virtual_engine *ve;
+	unsigned long sched;
 	unsigned int n;
 	int err;
 
@@ -3448,6 +3449,7 @@ intel_execlists_create_virtual(struct intel_engine_cs **siblings,
 		goto err_put;
 	}
 
+	sched = ~0U;
 	for (n = 0; n < count; n++) {
 		struct intel_engine_cs *sibling = siblings[n];
 
@@ -3477,6 +3479,7 @@ intel_execlists_create_virtual(struct intel_engine_cs **siblings,
 
 		ve->siblings[ve->num_siblings++] = sibling;
 		ve->base.mask |= sibling->mask;
+		sched &= sibling->sched.flags;
 
 		/*
 		 * All physical engines must be compatible for their emission
@@ -3518,6 +3521,7 @@ intel_execlists_create_virtual(struct intel_engine_cs **siblings,
 			ve->base.name,
 			ve->base.mask,
 			ENGINE_VIRTUAL);
+	ve->base.sched.flags = sched;
 
 	ve->base.sched.submit_request = virtual_submit_request;
 	tasklet_setup(&ve->base.sched.tasklet, virtual_submission_tasklet);
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
index db6ac5a12834..887f38fb671f 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -606,7 +606,6 @@ static void guc_default_vfuncs(struct intel_engine_cs *engine)
 	}
 	engine->set_default_submission = guc_set_default_submission;
 
-	engine->flags |= I915_ENGINE_HAS_SCHEDULER;
 	engine->flags |= I915_ENGINE_NEEDS_BREADCRUMB_TASKLET;
 	engine->flags |= I915_ENGINE_HAS_PREEMPTION;
 
@@ -656,6 +655,7 @@ int intel_guc_submission_setup(struct intel_engine_cs *engine)
 	GEM_BUG_ON(INTEL_GEN(i915) < 11);
 
 	tasklet_setup(&engine->sched.tasklet, guc_submission_tasklet);
+	__set_bit(I915_SCHED_ACTIVE_BIT, &engine->sched.flags);
 
 	guc_default_vfuncs(engine);
 	guc_default_irqs(engine);
diff --git a/drivers/gpu/drm/i915/i915_request.h b/drivers/gpu/drm/i915/i915_request.h
index 8d9e59e3cdcb..8eea25cb043e 100644
--- a/drivers/gpu/drm/i915/i915_request.h
+++ b/drivers/gpu/drm/i915/i915_request.h
@@ -626,7 +626,7 @@ i915_request_active_timeline(const struct i915_request *rq)
 
 static inline bool i915_request_use_scheduler(const struct i915_request *rq)
 {
-	return intel_engine_has_scheduler(rq->engine);
+	return i915_sched_is_active(i915_request_get_scheduler(rq));
 }
 
 static inline bool i915_request_is_executing(const struct i915_request *rq)
diff --git a/drivers/gpu/drm/i915/i915_scheduler.c b/drivers/gpu/drm/i915/i915_scheduler.c
index ba70d2416b9b..79de2172f0b1 100644
--- a/drivers/gpu/drm/i915/i915_scheduler.c
+++ b/drivers/gpu/drm/i915/i915_scheduler.c
@@ -549,7 +549,7 @@ void i915_request_set_priority(struct i915_request *rq, int prio)
 	if (__i915_request_is_complete(rq))
 		goto unlock;
 
-	if (!intel_engine_has_scheduler(engine)) {
+	if (!i915_sched_is_active(&engine->sched)) {
 		rq->sched.attr.priority = prio;
 		goto unlock;
 	}
diff --git a/drivers/gpu/drm/i915/i915_scheduler_types.h b/drivers/gpu/drm/i915/i915_scheduler_types.h
index 685280d61581..cb1eddb7edc8 100644
--- a/drivers/gpu/drm/i915/i915_scheduler_types.h
+++ b/drivers/gpu/drm/i915/i915_scheduler_types.h
@@ -16,6 +16,10 @@
 struct drm_printer;
 struct i915_request;
 
+enum {
+	I915_SCHED_ACTIVE_BIT = 0,
+};
+
 /**
  * struct i915_sched - funnels requests towards hardware
  *
@@ -27,6 +31,7 @@ struct i915_request;
 struct i915_sched {
 	spinlock_t lock; /* protects the scheduling lists and queue */
 
+	unsigned long flags;
 	unsigned long mask; /* available scheduling channels */
 
 	/*
@@ -174,4 +179,9 @@ struct i915_dependency {
 				&(rq__)->sched.signalers_list, \
 				signal_link)
 
+static inline bool i915_sched_is_active(const struct i915_sched *se)
+{
+	return test_bit(I915_SCHED_ACTIVE_BIT, &se->flags);
+}
+
 #endif /* _I915_SCHEDULER_TYPES_H_ */
-- 
2.20.1



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