From 6ceeb144b1d6952a36afa6c29718beac575f2a3f Mon Sep 17 00:00:00 2001 From: =?utf8?q?Christian=20K=C3=B6nig?= Date: Thu, 28 Nov 2019 14:51:46 +0100 Subject: [PATCH] drm/amdgpu: move VM eviction decision into amdgpu_vm.c MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit When a page tables needs to be evicted the VM code should decide if that is possible or not. Signed-off-by: Christian König Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 5 +---- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 22 ++++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 1 + 3 files changed, 24 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 61d9b7774d42..80fc3d8ee1cf 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -1489,11 +1489,8 @@ static bool amdgpu_ttm_bo_eviction_valuable(struct ttm_buffer_object *bo, struct dma_fence *f; int i; - /* Don't evict VM page tables while they are busy, otherwise we can't - * cleanly handle page faults. - */ if (bo->type == ttm_bo_type_kernel && - !dma_resv_test_signaled_rcu(bo->base.resv, true)) + !amdgpu_vm_evictable(ttm_to_amdgpu_bo(bo))) return false; /* If bo is a KFD BO, check if the bo belongs to the current process. diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index f20b572d2438..145ea95d977a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -2500,6 +2500,28 @@ void amdgpu_vm_bo_rmv(struct amdgpu_device *adev, } /** + * amdgpu_vm_evictable - check if we can evict a VM + * + * @bo: A page table of the VM. + * + * Check if it is possible to evict a VM. + */ +bool amdgpu_vm_evictable(struct amdgpu_bo *bo) +{ + struct amdgpu_vm_bo_base *bo_base = bo->vm_bo; + + /* Page tables of a destroyed VM can go away immediately */ + if (!bo_base || !bo_base->vm) + return true; + + /* Don't evict VM page tables while they are busy */ + if (!dma_resv_test_signaled_rcu(bo->tbo.base.resv, true)) + return false; + + return true; +} + +/** * amdgpu_vm_bo_invalidate - mark the bo as invalid * * @adev: amdgpu_device pointer diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h index 67f946b0c515..d3b7a5cff56c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h @@ -378,6 +378,7 @@ int amdgpu_vm_handle_moved(struct amdgpu_device *adev, int amdgpu_vm_bo_update(struct amdgpu_device *adev, struct amdgpu_bo_va *bo_va, bool clear); +bool amdgpu_vm_evictable(struct amdgpu_bo *bo); void amdgpu_vm_bo_invalidate(struct amdgpu_device *adev, struct amdgpu_bo *bo, bool evicted); uint64_t amdgpu_vm_map_gart(const dma_addr_t *pages_addr, uint64_t addr); -- 2.11.0