From 9f4a38aab9fd464c64f18c65dd7b7e1b1d7978b5 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Tue, 19 May 2020 07:31:12 +0100
Subject: drm/i915: Don't set queue-priority hint when supressing the
Git-commit: 0fad590fd98f308c903fe8205c0f07a649a0b72e
Patch-mainline: v5.8-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
reschedule
We recorded the execlists->queue_priority_hint update for the inflight
request without kicking the tasklet. The next submitted request then
failed to be scheduled as it had a lower priority than the hint, leaving
the HW running with only the inflight request.
Fixes: 6cebcf746f3f ("drm/i915: Tweak scheduler's kick_submission()")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200519063123.20673-1-chris@chris-wilson.co.uk
(cherry picked from commit b86fc6e5e89e5645b43f57171c26740ef38f9f4a)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/i915_scheduler.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_scheduler.c b/drivers/gpu/drm/i915/i915_scheduler.c
index f4ea318781f0..cbb880b10c65 100644
--- a/drivers/gpu/drm/i915/i915_scheduler.c
+++ b/drivers/gpu/drm/i915/i915_scheduler.c
@@ -209,14 +209,6 @@ static void kick_submission(struct intel_engine_cs *engine,
if (!inflight)
goto unlock;
- ENGINE_TRACE(engine,
- "bumping queue-priority-hint:%d for rq:%llx:%lld, inflight:%llx:%lld prio %d\n",
- prio,
- rq->fence.context, rq->fence.seqno,
- inflight->fence.context, inflight->fence.seqno,
- inflight->sched.attr.priority);
- engine->execlists.queue_priority_hint = prio;
-
/*
* If we are already the currently executing context, don't
* bother evaluating if we should preempt ourselves.
@@ -224,6 +216,14 @@ static void kick_submission(struct intel_engine_cs *engine,
if (inflight->context == rq->context)
goto unlock;
+ ENGINE_TRACE(engine,
+ "bumping queue-priority-hint:%d for rq:%llx:%lld, inflight:%llx:%lld prio %d\n",
+ prio,
+ rq->fence.context, rq->fence.seqno,
+ inflight->fence.context, inflight->fence.seqno,
+ inflight->sched.attr.priority);
+
+ engine->execlists.queue_priority_hint = prio;
if (need_preempt(prio, rq_prio(inflight)))
tasklet_hi_schedule(&engine->execlists.tasklet);
--
2.28.0