diff mbox series

[05/12] drm/i915/execlists: Hesitate before slicing

Message ID 20190701100502.15639-5-chris@chris-wilson.co.uk (mailing list archive)
State New, archived
Headers show
Series [01/12] drm/i915/guc: Avoid reclaim locks during reset | expand

Commit Message

Chris Wilson July 1, 2019, 10:04 a.m. UTC 
Be a little more hesitant before injecting a timeslice, and try to take
into account any change in priority that is due for the running task
before switching to another task. This will allow us to arbitrarily
prevent switching away from a request if we deem it necessarily to
disable preemption, for instance.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Acked-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
---
 drivers/gpu/drm/i915/gt/intel_lrc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 953b3938a85f..1e85e04c58c4 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -899,7 +899,7 @@  need_timeslice(struct intel_engine_cs *engine, const struct i915_request *rq)
 	hint = max(rq_prio(list_next_entry(rq, sched.link)),
 		   engine->execlists.queue_priority_hint);
 
-	return hint >= rq_prio(rq);
+	return hint >= effective_prio(rq);
 }
 
 static bool