From 8bb31587820a6e04cb613b49238b1800d1a97223 Mon Sep 17 00:00:00 2001 From: Christian König Date: Tue, 23 Nov 2021 11:30:35 +0100 Subject: drm/ttm: remove bo->moving MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is now handled by the DMA-buf framework in the dma_resv obj. Also remove the workaround inside VMWGFX to update the moving fence. Signed-off-by: Christian König Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20220407085946.744568-14-christian.koenig@amd.com --- drivers/gpu/drm/ttm/ttm_bo.c | 10 ++-------- drivers/gpu/drm/ttm/ttm_bo_util.c | 7 ------- drivers/gpu/drm/ttm/ttm_bo_vm.c | 34 +++++++++++++--------------------- 3 files changed, 15 insertions(+), 36 deletions(-) (limited to 'drivers/gpu/drm/ttm') diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 360f980c7e10..015a94f766de 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -418,7 +418,6 @@ static void ttm_bo_release(struct kref *kref) dma_resv_unlock(bo->base.resv); atomic_dec(&ttm_glob.bo_count); - dma_fence_put(bo->moving); bo->destroy(bo); } @@ -714,9 +713,8 @@ void ttm_bo_unpin(struct ttm_buffer_object *bo) EXPORT_SYMBOL(ttm_bo_unpin); /* - * Add the last move fence to the BO and reserve a new shared slot. We only use - * a shared slot to avoid unecessary sync and rely on the subsequent bo move to - * either stall or use an exclusive fence respectively set bo->moving. + * Add the last move fence to the BO as kernel dependency and reserve a new + * fence slot. */ static int ttm_bo_add_move_fence(struct ttm_buffer_object *bo, struct ttm_resource_manager *man, @@ -746,9 +744,6 @@ static int ttm_bo_add_move_fence(struct ttm_buffer_object *bo, dma_fence_put(fence); return ret; } - - dma_fence_put(bo->moving); - bo->moving = fence; return 0; } @@ -951,7 +946,6 @@ int ttm_bo_init_reserved(struct ttm_device *bdev, bo->bdev = bdev; bo->type = type; bo->page_alignment = page_alignment; - bo->moving = NULL; bo->pin_count = 0; bo->sg = sg; bo->bulk_move = NULL; diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c index 99deb45894f4..bc5190340b9c 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_util.c +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c @@ -228,7 +228,6 @@ static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo, atomic_inc(&ttm_glob.bo_count); INIT_LIST_HEAD(&fbo->base.ddestroy); - fbo->base.moving = NULL; drm_vma_node_reset(&fbo->base.base.vma_node); kref_init(&fbo->base.kref); @@ -500,9 +499,6 @@ static int ttm_bo_move_to_ghost(struct ttm_buffer_object *bo, * operation has completed. */ - dma_fence_put(bo->moving); - bo->moving = dma_fence_get(fence); - ret = ttm_buffer_object_transfer(bo, &ghost_obj); if (ret) return ret; @@ -546,9 +542,6 @@ static void ttm_bo_move_pipeline_evict(struct ttm_buffer_object *bo, spin_unlock(&from->move_lock); ttm_resource_free(bo, &bo->resource); - - dma_fence_put(bo->moving); - bo->moving = dma_fence_get(fence); } int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo, diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c index 08ba083a80d2..5b324f245265 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_vm.c +++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c @@ -46,17 +46,13 @@ static vm_fault_t ttm_bo_vm_fault_idle(struct ttm_buffer_object *bo, struct vm_fault *vmf) { - vm_fault_t ret = 0; - int err = 0; - - if (likely(!bo->moving)) - goto out_unlock; + long err = 0; /* * Quick non-stalling check for idle. */ - if (dma_fence_is_signaled(bo->moving)) - goto out_clear; + if (dma_resv_test_signaled(bo->base.resv, DMA_RESV_USAGE_KERNEL)) + return 0; /* * If possible, avoid waiting for GPU with mmap_lock @@ -64,34 +60,30 @@ static vm_fault_t ttm_bo_vm_fault_idle(struct ttm_buffer_object *bo, * is the first attempt. */ if (fault_flag_allow_retry_first(vmf->flags)) { - ret = VM_FAULT_RETRY; if (vmf->flags & FAULT_FLAG_RETRY_NOWAIT) - goto out_unlock; + return VM_FAULT_RETRY; ttm_bo_get(bo); mmap_read_unlock(vmf->vma->vm_mm); - (void) dma_fence_wait(bo->moving, true); + (void)dma_resv_wait_timeout(bo->base.resv, + DMA_RESV_USAGE_KERNEL, true, + MAX_SCHEDULE_TIMEOUT); dma_resv_unlock(bo->base.resv); ttm_bo_put(bo); - goto out_unlock; + return VM_FAULT_RETRY; } /* * Ordinary wait. */ - err = dma_fence_wait(bo->moving, true); - if (unlikely(err != 0)) { - ret = (err != -ERESTARTSYS) ? VM_FAULT_SIGBUS : + err = dma_resv_wait_timeout(bo->base.resv, DMA_RESV_USAGE_KERNEL, true, + MAX_SCHEDULE_TIMEOUT); + if (unlikely(err < 0)) { + return (err != -ERESTARTSYS) ? VM_FAULT_SIGBUS : VM_FAULT_NOPAGE; - goto out_unlock; } -out_clear: - dma_fence_put(bo->moving); - bo->moving = NULL; - -out_unlock: - return ret; + return 0; } static unsigned long ttm_bo_io_mem_pfn(struct ttm_buffer_object *bo, -- cgit v1.2.3