We are already doing this for DMA-buf imports and also for
amdgpu VM BOs for quite a while now.
If this doesn't run into any problems we are probably going
to stop removing BOs from the LRU altogether.
v2: drop BUG_ON from ttm_bo_add_to_lru
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
---
.../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 9 ++++----
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_csa.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 4 ++--
drivers/gpu/drm/qxl/qxl_release.c | 2 +-
drivers/gpu/drm/radeon/radeon_gem.c | 2 +-
drivers/gpu/drm/radeon/radeon_object.c | 2 +-
drivers/gpu/drm/ttm/ttm_bo.c | 23 ++++++++++---------
drivers/gpu/drm/ttm/ttm_execbuf_util.c | 20 +++++++++-------
drivers/gpu/drm/virtio/virtgpu_ioctl.c | 2 +-
drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 3 ++-
drivers/gpu/drm/vmwgfx/vmwgfx_validation.h | 2 +-
include/drm/ttm/ttm_bo_driver.h | 5 +++-
include/drm/ttm/ttm_execbuf_util.h | 3 ++-
14 files changed, 46 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index e1cae4a37113..647e18f9e136 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -574,7 +574,7 @@ static int reserve_bo_and_vm(struct kgd_mem *mem,
amdgpu_vm_get_pd_bo(vm, &ctx->list, &ctx->vm_pd[0]);
ret = ttm_eu_reserve_buffers(&ctx->ticket, &ctx->list,
- false, &ctx->duplicates);
+ false, &ctx->duplicates, true);
if (!ret)
ctx->reserved = true;
else {
@@ -647,7 +647,7 @@ static int reserve_bo_and_cond_vms(struct kgd_mem *mem,
}
ret = ttm_eu_reserve_buffers(&ctx->ticket, &ctx->list,
- false, &ctx->duplicates);
+ false, &ctx->duplicates, true);
if (!ret)
ctx->reserved = true;
else
@@ -1800,7 +1800,8 @@ static int validate_invalid_user_pages(struct amdkfd_process_info *process_info)
}
/* Reserve all BOs and page tables for validation */
- ret = ttm_eu_reserve_buffers(&ticket, &resv_list, false, &duplicates);
+ ret = ttm_eu_reserve_buffers(&ticket, &resv_list, false, &duplicates,
+ true);
WARN(!list_empty(&duplicates), "Duplicates should be empty");
if (ret)
goto out_free;
@@ -2006,7 +2007,7 @@ int amdgpu_amdkfd_gpuvm_restore_process_bos(void *info, struct dma_fence **ef)
}
ret = ttm_eu_reserve_buffers(&ctx.ticket, &ctx.list,
- false, &duplicate_save);
+ false, &duplicate_save, true);
if (ret) {
pr_debug("Memory eviction: TTM Reserve Failed. Try again\n");
goto ttm_reserve_fail;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index d72cc583ebd1..fff558cf385b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -648,7 +648,7 @@ static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p,
}
r = ttm_eu_reserve_buffers(&p->ticket, &p->validated, true,
- &duplicates);
+ &duplicates, true);
if (unlikely(r != 0)) {
if (r != -ERESTARTSYS)
DRM_ERROR("ttm_eu_reserve_buffers failed.\n");
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_csa.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_csa.c
index 54dd02a898b9..06f83cac0d3a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_csa.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_csa.c
@@ -79,7 +79,7 @@ int amdgpu_map_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm,
list_add(&csa_tv.head, &list);
amdgpu_vm_get_pd_bo(vm, &list, &pd);
- r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL);
+ r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL, true);
if (r) {
DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r);
return r;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index 7b840367004c..d513a5ad03dd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -171,7 +171,7 @@ void amdgpu_gem_object_close(struct drm_gem_object *obj,
amdgpu_vm_get_pd_bo(vm, &list, &vm_pd);
- r = ttm_eu_reserve_buffers(&ticket, &list, false, &duplicates);
+ r = ttm_eu_reserve_buffers(&ticket, &list, false, &duplicates, true);
if (r) {
dev_err(adev->dev, "leaking bo va because "
"we fail to reserve bo (%d)\n", r);
@@ -608,7 +608,7 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
amdgpu_vm_get_pd_bo(&fpriv->vm, &list, &vm_pd);
- r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates);
+ r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates, true);
if (r)
goto error_unref;
diff --git a/drivers/gpu/drm/qxl/qxl_release.c b/drivers/gpu/drm/qxl/qxl_release.c
index 30f85f0130cb..49f9a9385393 100644
--- a/drivers/gpu/drm/qxl/qxl_release.c
+++ b/drivers/gpu/drm/qxl/qxl_release.c
@@ -256,7 +256,7 @@ int qxl_release_reserve_list(struct qxl_release *release, bool no_intr)
return 0;
ret = ttm_eu_reserve_buffers(&release->ticket, &release->bos,
- !no_intr, NULL);
+ !no_intr, NULL, true);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
index 44617dec8183..7411e69e2712 100644
--- a/drivers/gpu/drm/radeon/radeon_gem.c
+++ b/drivers/gpu/drm/radeon/radeon_gem.c
@@ -559,7 +559,7 @@ static void radeon_gem_va_update_vm(struct radeon_device *rdev,
if (!vm_bos)
return;
- r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL);
+ r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL, true);
if (r)
goto error_free;
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index 833e909706a9..36683de0300b 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -539,7 +539,7 @@ int radeon_bo_list_validate(struct radeon_device *rdev,
u64 bytes_moved_threshold = radeon_bo_get_threshold_for_moves(rdev);
INIT_LIST_HEAD(&duplicates);
- r = ttm_eu_reserve_buffers(ticket, head, true, &duplicates);
+ r = ttm_eu_reserve_buffers(ticket, head, true, &duplicates, true);
if (unlikely(r != 0)) {
return r;
}
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 2845fceb2fbd..06bbcd2679b2 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -173,19 +173,20 @@ void ttm_bo_add_to_lru(struct ttm_buffer_object *bo)
reservation_object_assert_held(bo->resv);
- if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) {
- BUG_ON(!list_empty(&bo->lru));
+ if (!list_empty(&bo->lru))
+ return;
- man = &bdev->man[bo->mem.mem_type];
- list_add_tail(&bo->lru, &man->lru[bo->priority]);
- kref_get(&bo->list_kref);
+ if (bo->mem.placement & TTM_PL_FLAG_NO_EVICT)
+ return;
- if (bo->ttm && !(bo->ttm->page_flags &
- (TTM_PAGE_FLAG_SG | TTM_PAGE_FLAG_SWAPPED))) {
- list_add_tail(&bo->swap,
- &bdev->glob->swap_lru[bo->priority]);
- kref_get(&bo->list_kref);
- }
+ man = &bdev->man[bo->mem.mem_type];
+ list_add_tail(&bo->lru, &man->lru[bo->priority]);
+ kref_get(&bo->list_kref);
+
+ if (bo->ttm && !(bo->ttm->page_flags &
+ (TTM_PAGE_FLAG_SG | TTM_PAGE_FLAG_SWAPPED))) {
+ list_add_tail(&bo->swap, &bdev->glob->swap_lru[bo->priority]);
+ kref_get(&bo->list_kref);
}
}
EXPORT_SYMBOL(ttm_bo_add_to_lru);
diff --git a/drivers/gpu/drm/ttm/ttm_execbuf_util.c b/drivers/gpu/drm/ttm/ttm_execbuf_util.c
index 0075eb9a0b52..957ec375a4ba 100644
--- a/drivers/gpu/drm/ttm/ttm_execbuf_util.c
+++ b/drivers/gpu/drm/ttm/ttm_execbuf_util.c
@@ -69,7 +69,8 @@ void ttm_eu_backoff_reservation(struct ww_acquire_ctx *ticket,
list_for_each_entry(entry, list, head) {
struct ttm_buffer_object *bo = entry->bo;
- ttm_bo_add_to_lru(bo);
+ if (list_empty(&bo->lru))
+ ttm_bo_add_to_lru(bo);
reservation_object_unlock(bo->resv);
}
spin_unlock(&glob->lru_lock);
@@ -93,7 +94,7 @@ EXPORT_SYMBOL(ttm_eu_backoff_reservation);
int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket,
struct list_head *list, bool intr,
- struct list_head *dups)
+ struct list_head *dups, bool del_lru)
{
struct ttm_bo_global *glob;
struct ttm_validate_buffer *entry;
@@ -172,11 +173,11 @@ int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket,
list_add(&entry->head, list);
}
- if (ticket)
- ww_acquire_done(ticket);
- spin_lock(&glob->lru_lock);
- ttm_eu_del_from_lru_locked(list);
- spin_unlock(&glob->lru_lock);
+ if (del_lru) {
+ spin_lock(&glob->lru_lock);
+ ttm_eu_del_from_lru_locked(list);
+ spin_unlock(&glob->lru_lock);
+ }
return 0;
}
EXPORT_SYMBOL(ttm_eu_reserve_buffers);
@@ -203,7 +204,10 @@ void ttm_eu_fence_buffer_objects(struct ww_acquire_ctx *ticket,
reservation_object_add_shared_fence(bo->resv, fence);
else
reservation_object_add_excl_fence(bo->resv, fence);
- ttm_bo_add_to_lru(bo);
+ if (list_empty(&bo->lru))
+ ttm_bo_add_to_lru(bo);
+ else
+ ttm_bo_move_to_lru_tail(bo, NULL);
reservation_object_unlock(bo->resv);
}
spin_unlock(&glob->lru_lock);
diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
index 161b80fee492..5cffaa24259f 100644
--- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
+++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
@@ -63,7 +63,7 @@ static int virtio_gpu_object_list_validate(struct ww_acquire_ctx *ticket,
struct virtio_gpu_object *qobj;
int ret;
- ret = ttm_eu_reserve_buffers(ticket, head, true, NULL);
+ ret = ttm_eu_reserve_buffers(ticket, head, true, NULL, true);
if (ret != 0)
return ret;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
index a7c30e567f09..d28cbedba0b5 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
@@ -465,7 +465,8 @@ vmw_resource_check_buffer(struct ww_acquire_ctx *ticket,
val_buf->bo = &res->backup->base;
val_buf->num_shared = 0;
list_add_tail(&val_buf->head, &val_list);
- ret = ttm_eu_reserve_buffers(ticket, &val_list, interruptible, NULL);
+ ret = ttm_eu_reserve_buffers(ticket, &val_list, interruptible, NULL,
+ true);
if (unlikely(ret != 0))
goto out_no_reserve;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_validation.h b/drivers/gpu/drm/vmwgfx/vmwgfx_validation.h
index 3b396fea40d7..ac435b51f4eb 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_validation.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_validation.h
@@ -165,7 +165,7 @@ vmw_validation_bo_reserve(struct vmw_validation_context *ctx,
bool intr)
{
return ttm_eu_reserve_buffers(&ctx->ticket, &ctx->bo_list, intr,
- NULL);
+ NULL, true);
}
/**
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index c008346c2401..fc0d995ac90d 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -769,7 +769,10 @@ static inline void ttm_bo_unreserve(struct ttm_buffer_object *bo)
{
if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) {
spin_lock(&bo->bdev->glob->lru_lock);
- ttm_bo_add_to_lru(bo);
+ if (list_empty(&bo->lru))
+ ttm_bo_add_to_lru(bo);
+ else
+ ttm_bo_move_to_lru_tail(bo, NULL);
spin_unlock(&bo->bdev->glob->lru_lock);
}
reservation_object_unlock(bo->resv);
diff --git a/include/drm/ttm/ttm_execbuf_util.h b/include/drm/ttm/ttm_execbuf_util.h
index 621615fa7728..7e46cc678e7e 100644
--- a/include/drm/ttm/ttm_execbuf_util.h
+++ b/include/drm/ttm/ttm_execbuf_util.h
@@ -70,6 +70,7 @@ extern void ttm_eu_backoff_reservation(struct ww_acquire_ctx *ticket,
* @list: thread private list of ttm_validate_buffer structs.
* @intr: should the wait be interruptible
* @dups: [out] optional list of duplicates.
+ * @del_lru: true if BOs should be removed from the LRU.
*
* Tries to reserve bos pointed to by the list entries for validation.
* If the function returns 0, all buffers are marked as "unfenced",
@@ -98,7 +99,7 @@ extern void ttm_eu_backoff_reservation(struct ww_acquire_ctx *ticket,
extern int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket,
struct list_head *list, bool intr,
- struct list_head *dups);
+ struct list_head *dups, bool del_lru);
/**
* function ttm_eu_fence_buffer_objects.
--
2.17.1
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