[PATCH] drm/scheduler: don't update last scheduled fence in TDR

[Liu, Monk]

Reviewed-by : Monk Liu <monk.liu at amd.com>

-----Original Message-----
From: amd-gfx [mailto:amd-gfx-bounces at lists.freedesktop.org] On Behalf Of Pixel Ding
Sent: 2018年4月25日 16:40
To: amd-gfx at lists.freedesktop.org
Cc: Ding, Pixel <Pixel.Ding at amd.com>
Subject: [PATCH] drm/scheduler: don't update last scheduled fence in TDR

The current sequence in scheduler thread is:
1. update last sched fence
2. job begin (adding to mirror list)
3. job finish (remove from mirror list)
4. back to 1

Since we update last sched prior to joining mirror list, the jobs in mirror list already pass the last sched fence. TDR just run the jobs in mirror list, so we should not update the last sched fences in TDR.

Signed-off-by: Pixel Ding <Pixel.Ding at amd.com>
---
 drivers/gpu/drm/scheduler/gpu_scheduler.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/gpu/drm/scheduler/gpu_scheduler.c b/drivers/gpu/drm/scheduler/gpu_scheduler.c
index 088ff2b..1f1dd70 100644
--- a/drivers/gpu/drm/scheduler/gpu_scheduler.c
+++ b/drivers/gpu/drm/scheduler/gpu_scheduler.c
@@ -575,9 +575,6 @@ void drm_sched_job_recovery(struct drm_gpu_scheduler *sched)
 		fence = sched->ops->run_job(s_job);
 		atomic_inc(&sched->hw_rq_count);
 
-		dma_fence_put(s_job->entity->last_scheduled);
-		s_job->entity->last_scheduled = dma_fence_get(&s_fence->finished);
-
 		if (fence) {
 			s_fence->parent = dma_fence_get(fence);
 			r = dma_fence_add_callback(fence, &s_fence->cb,
--
2.7.4

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