If a job need sync the bo resv, it is likely that bo need the job fence
to sync with others.
Cc: Christian König <christian.koe...@amd.com>
Cc: Alex Deucher <alexander.deuc...@amd.com>
Cc: Felix Kuehling <felix.kuehl...@amd.com>
Suggested-by: Christian König <christian.koe...@amd.com>
Signed-off-by: xinhui pan <xinhui....@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 5 +++++
drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c | 9 +++++++++
2 files changed, 14 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
index b5705fcfc935..ca6021b4200b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
@@ -226,6 +226,11 @@ struct amdgpu_vm_update_params {
* @num_dw_left: number of dw left for the IB
*/
unsigned int num_dw_left;
+
+ /**
+ * @resv: sync the resv and add job fence to it conditionally.
+ */
+ struct dma_resv *resv;
};
struct amdgpu_vm_update_funcs {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c
index 4cc7881f438c..0cfac59bff36 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c
@@ -70,6 +70,8 @@ static int amdgpu_vm_sdma_prepare(struct
amdgpu_vm_update_params *p,
p->num_dw_left = ndw;
+ p->resv = resv;
+
if (!resv)
return 0;
@@ -111,6 +113,13 @@ static int amdgpu_vm_sdma_commit(struct
amdgpu_vm_update_params *p,
swap(p->vm->last_delayed, tmp);
dma_fence_put(tmp);
+ /* add job fence to resv.
+ * MM notifier path is an exception as we can not grab the
+ * resv lock.
+ */
+ if (!p->direct && p->resv)
+ dma_resv_add_shared_fence(p->resv, f);
+
if (fence && !p->direct)
swap(*fence, f);
dma_fence_put(f);
--
2.17.1
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