[PATCH 3/5] drm/amdgpu:implement guilty pointer

[Monk Liu]

for user context there will be a guilty pointer in entity
that points to the guilty member of its context, thus we
cant track if a given entity is not from kernel ctx and
if it is already marked guilty.

Change-Id: Ie0a30830d89f52a6c4a514e67206140698a46367
Signed-off-by: Monk Liu <Monk.Liu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h           | 1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c       | 1 +
 drivers/gpu/drm/amd/scheduler/gpu_scheduler.h | 1 +
 3 files changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 774edc1..6a4178b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -744,6 +744,7 @@ struct amdgpu_ctx {
 	enum amd_sched_priority init_priority;
 	enum amd_sched_priority override_priority;
 	struct mutex            lock;
+	atomic_t	guilty;
 };
 
 struct amdgpu_ctx_mgr {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
index c184468..d822e95 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
@@ -93,6 +93,7 @@ static int amdgpu_ctx_init(struct amdgpu_device *adev,
 					  rq, amdgpu_sched_jobs);
 		if (r)
 			goto failed;
+		ctx->rings[i].entity.guilty = &ctx->guilty;
 	}
 
 	r = amdgpu_queue_mgr_init(adev, &ctx->queue_mgr);
diff --git a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
index 1dac7bc..2d59fc5 100644
--- a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
+++ b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
@@ -50,6 +50,7 @@ struct amd_sched_entity {
 
 	struct dma_fence		*dependency;
 	struct dma_fence_cb		cb;
+	atomic_t	*guilty; /* points to ctx's guilty */
 };
 
 /**
-- 
2.7.4