[PATCH 66/68] drm/i915/gt: Enable busy-stats for ring-scheduler

[Chris Wilson]

Couple up the context in/out accounting to record how long each engine
is busy handling requests. This is exposed to userspace for more accurate
measurements, and also enables our soft-rps timer.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gt/intel_ring_scheduler.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_ring_scheduler.c b/drivers/gpu/drm/i915/gt/intel_ring_scheduler.c
index 405294917a69..440002930201 100644
--- a/drivers/gpu/drm/i915/gt/intel_ring_scheduler.c
+++ b/drivers/gpu/drm/i915/gt/intel_ring_scheduler.c
@@ -10,6 +10,7 @@
 #include "i915_drv.h"
 #include "intel_breadcrumbs.h"
 #include "intel_context.h"
+#include "intel_engine_stats.h"
 #include "intel_gt.h"
 #include "intel_gt_pm.h"
 #include "intel_gt_requests.h"
@@ -65,6 +66,7 @@ static struct i915_request *
 schedule_in(struct intel_engine_cs *engine, struct i915_request *rq)
 {
 	__intel_gt_pm_get(engine->gt);
+	intel_engine_context_in(engine);
 	return i915_request_get(rq);
 }
 
@@ -79,6 +81,7 @@ schedule_out(struct intel_engine_cs *engine, struct i915_request *rq)
 		i915_request_update_deadline(list_next_entry(rq, link));
 
 	i915_request_put(rq);
+	intel_engine_context_out(engine);
 	intel_gt_pm_put_async(engine->gt);
 }
 
@@ -731,6 +734,7 @@ int intel_ring_scheduler_setup(struct intel_engine_cs *engine)
 
 	engine->flags |= I915_ENGINE_HAS_SCHEDULER;
 	engine->flags |= I915_ENGINE_NEEDS_BREADCRUMB_TASKLET;
+	engine->flags |= I915_ENGINE_SUPPORTS_STATS;
 
 	/* Finally, take ownership and responsibility for cleanup! */
 	engine->release = ring_release;
-- 
2.20.1