drm/amdkfd: add svm_bo reference for eviction fence

[why]
As part of the SVM functionality, the eviction mechanism used for
SVM_BOs is different. This mechanism uses one eviction fence per prange,
instead of one fence per kfd_process.

[how]
A svm_bo reference to amdgpu_amdkfd_fence to allow differentiate between
SVM_BO or regular BO evictions. This also include modifications to set the
reference at the fence creation call.

Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
index b3e5ece..313ee49 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
@@ -75,6 +75,7 @@ struct amdgpu_amdkfd_fence {
        struct mm_struct *mm;
        spinlock_t lock;
        char timeline_name[TASK_COMM_LEN];
+       struct svm_range_bo *svm_bo;
 };
 
 struct amdgpu_kfd_dev {
@@ -148,7 +149,8 @@ int amdgpu_queue_mask_bit_to_set_resource_bit(struct amdgpu_device *adev,
                                        int queue_bit);
 
 struct amdgpu_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context,
-                                                               struct mm_struct *mm);
+                               struct mm_struct *mm,
+                               struct svm_range_bo *svm_bo);
 #if IS_ENABLED(CONFIG_HSA_AMD)
 bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm);
 struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f);

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_fence.c
index 5af4649..5355964 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_fence.c
@@ -60,7 +60,8 @@ static atomic_t fence_seq = ATOMIC_INIT(0);
  */
 
 struct amdgpu_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context,
-                                                      struct mm_struct *mm)
+                               struct mm_struct *mm,
+                               struct svm_range_bo *svm_bo)
 {
        struct amdgpu_amdkfd_fence *fence;
 
@@ -73,7 +74,7 @@ struct amdgpu_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context,
        fence->mm = mm;
        get_task_comm(fence->timeline_name, current);
        spin_lock_init(&fence->lock);
-
+       fence->svm_bo = svm_bo;
        dma_fence_init(&fence->base, &amdkfd_fence_ops, &fence->lock,
                   context, atomic_inc_return(&fence_seq));
 

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index d03088d..6c4df1f 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -972,7 +972,8 @@ static int init_kfd_vm(struct amdgpu_vm *vm, void **process_info,
 
                info->eviction_fence =
                        amdgpu_amdkfd_fence_create(dma_fence_context_alloc(1),
-                                                  current->mm);
+                                                  current->mm,
+                                                  NULL);
                if (!info->eviction_fence) {
                        pr_err("Failed to create eviction fence\n");
                        ret = -ENOMEM;
@@ -2162,7 +2163,8 @@ int amdgpu_amdkfd_gpuvm_restore_process_bos(void *info, struct dma_fence **ef)
         */
        new_fence = amdgpu_amdkfd_fence_create(
                                process_info->eviction_fence->base.context,
-                               process_info->eviction_fence->mm);
+                               process_info->eviction_fence->mm,
+                               NULL);
        if (!new_fence) {
                pr_err("Failed to create eviction fence\n");
                ret = -ENOMEM;