drm/i915: Stop showing seqno info from debugfs/i915_interrupt_info

Since the seqno information shown from i915_interrupt_info is just a
small subset of i915_engine_info, remove it.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171209104418.4223-2-chris@chris-wilson.co.uk

drivers/gpu/drm/i915/i915_debugfs.c

@@ -664,25 +664,6 @@ static int i915_gem_batch_pool_info(struct seq_file *m, void *data)
 	return 0;
 }
 
-static void i915_ring_seqno_info(struct seq_file *m,
-				 struct intel_engine_cs *engine)
-{
-	struct intel_breadcrumbs *b = &engine->breadcrumbs;
-	struct rb_node *rb;
-
-	seq_printf(m, "Current sequence (%s): %x\n",
-		   engine->name, intel_engine_get_seqno(engine));
-
-	spin_lock_irq(&b->rb_lock);
-	for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) {
-		struct intel_wait *w = rb_entry(rb, typeof(*w), node);
-
-		seq_printf(m, "Waiting (%s): %s [%d] on %x\n",
-			   engine->name, w->tsk->comm, w->tsk->pid, w->seqno);
-	}
-	spin_unlock_irq(&b->rb_lock);
-}
-
 static int i915_interrupt_info(struct seq_file *m, void *data)
 {
 	struct drm_i915_private *dev_priv = node_to_i915(m->private);
@@ -883,13 +864,12 @@ static int i915_interrupt_info(struct seq_file *m, void *data)
 		seq_printf(m, "Graphics Interrupt mask:		%08x\n",
 			   I915_READ(GTIMR));
 	}
-	for_each_engine(engine, dev_priv, id) {
 	if (INTEL_GEN(dev_priv) >= 6) {
+		for_each_engine(engine, dev_priv, id) {
 			seq_printf(m,
 				   "Graphics Interrupt mask (%s):	%08x\n",
 				   engine->name, I915_READ_IMR(engine));
 		}
-		i915_ring_seqno_info(m, engine);
 	}
 	intel_runtime_pm_put(dev_priv);
 

drivers/gpu/drm/i915/intel_engine_cs.c

@@ -1840,6 +1840,10 @@ void intel_engine_dump(struct intel_engine_cs *engine,
 	}
 	spin_unlock_irq(&b->rb_lock);
 
+	if (INTEL_GEN(dev_priv) >= 6) {
+		drm_printf(m, "\tRING_IMR: %08x\n", I915_READ_IMR(engine));
+	}
+
 	drm_printf(m, "IRQ? 0x%lx (breadcrumbs? %s) (execlists? %s)\n",
 		   engine->irq_posted,
 		   yesno(test_bit(ENGINE_IRQ_BREADCRUMB,