From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Mon, 16 Jul 2018 14:58:48 +0200
Subject: drm/amdgpu: change ring priority after pushing the job (v2)
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Git-commit: b5286801705b39e44b824520714d503f882fef1c
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Pushing a job can change the ring assignment of an entity.

v2: squash in:
"drm/amdgpu: fix job priority handling" (Christian)

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c  |    6 +++++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_job.c |    8 ++++++--
 2 files changed, 11 insertions(+), 3 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -1209,6 +1209,7 @@ static int amdgpu_cs_submit(struct amdgp
 {
 	struct amdgpu_ring *ring = p->ring;
 	struct drm_sched_entity *entity = &p->ctx->rings[ring->idx].entity;
+	enum drm_sched_priority priority;
 	struct amdgpu_job *job;
 	unsigned i;
 	uint64_t seq;
@@ -1256,11 +1257,14 @@ static int amdgpu_cs_submit(struct amdgp
 	job->uf_sequence = seq;
 
 	amdgpu_job_free_resources(job);
-	amdgpu_ring_priority_get(p->ring, job->base.s_priority);
 
 	trace_amdgpu_cs_ioctl(job);
+	priority = job->base.s_priority;
 	drm_sched_entity_push_job(&job->base, entity);
 
+	ring = to_amdgpu_ring(entity->sched);
+	amdgpu_ring_priority_get(ring, priority);
+
 	ttm_eu_fence_buffer_objects(&p->ticket, &p->validated, p->fence);
 	amdgpu_mn_unlock(p->mn);
 
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
@@ -126,7 +126,8 @@ void amdgpu_job_free(struct amdgpu_job *
 int amdgpu_job_submit(struct amdgpu_job *job, struct drm_sched_entity *entity,
 		      void *owner, struct dma_fence **f)
 {
-	struct amdgpu_ring *ring = to_amdgpu_ring(entity->sched);
+	enum drm_sched_priority priority;
+	struct amdgpu_ring *ring;
 	int r;
 
 	if (!f)
@@ -139,9 +140,12 @@ int amdgpu_job_submit(struct amdgpu_job
 	job->owner = owner;
 	*f = dma_fence_get(&job->base.s_fence->finished);
 	amdgpu_job_free_resources(job);
-	amdgpu_ring_priority_get(ring, job->base.s_priority);
+	priority = job->base.s_priority;
 	drm_sched_entity_push_job(&job->base, entity);
 
+	ring = to_amdgpu_ring(entity->sched);
+	amdgpu_ring_priority_get(ring, priority);
+
 	return 0;
 }