From 398cee6e91a6e4dc849e126ae3582da85ea1bbf7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= Date: Wed, 11 Jul 2018 12:42:55 +0200 Subject: [PATCH 4890/5725] drm/amdgpu: Warn and update pin_size values when destroying a pinned BO MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This shouldn't happen, but if it does, we'll get a backtrace of the caller, and update the pin_size values as needed. v2: * Check bo->pin_count instead of placement flags (Christian König) Reviewed-by: Christian König Signed-off-by: Michel Dänzer Signed-off-by: Alex Deucher Signed-off-by: Raveendra Talabattula --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 33 +++++++++++++++++++++++------- 1 file changed, 26 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index b483732..aecee98 100755 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -63,6 +63,27 @@ static bool amdgpu_need_backup(struct amdgpu_device *adev) return true; } +/** + * amdgpu_bo_subtract_pin_size - Remove BO from pin_size accounting + * + * @bo: &amdgpu_bo buffer object + * + * This function is called when a BO stops being pinned, and updates the + * &amdgpu_device pin_size values accordingly. + */ +static void amdgpu_bo_subtract_pin_size(struct amdgpu_bo *bo) +{ + struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); + + if (bo->tbo.mem.mem_type == TTM_PL_VRAM) { + atomic64_sub(amdgpu_bo_size(bo), &adev->vram_pin_size); + atomic64_sub(amdgpu_vram_mgr_bo_visible_size(bo), + &adev->visible_pin_size); + } else if (bo->tbo.mem.mem_type == TTM_PL_TT) { + atomic64_sub(amdgpu_bo_size(bo), &adev->gart_pin_size); + } +} + static void amdgpu_ttm_bo_destroy(struct ttm_buffer_object *tbo) { struct amdgpu_device *adev = amdgpu_ttm_adev(tbo->bdev); @@ -71,6 +92,10 @@ static void amdgpu_ttm_bo_destroy(struct ttm_buffer_object *tbo) if (bo->tbo.mem.mem_type == AMDGPU_PL_DGMA_IMPORT) kfree(tbo->mem.bus.addr); + + if (WARN_ON_ONCE(bo->pin_count > 0)) + amdgpu_bo_subtract_pin_size(bo); + if (bo->kfd_bo) amdgpu_amdkfd_unreserve_system_memory_limit(bo); @@ -1008,13 +1033,7 @@ int amdgpu_bo_unpin(struct amdgpu_bo *bo) if (bo->pin_count) return 0; - if (bo->tbo.mem.mem_type == TTM_PL_VRAM) { - atomic64_sub(amdgpu_bo_size(bo), &adev->vram_pin_size); - atomic64_sub(amdgpu_vram_mgr_bo_visible_size(bo), - &adev->visible_pin_size); - } else if (bo->tbo.mem.mem_type == TTM_PL_TT) { - atomic64_sub(amdgpu_bo_size(bo), &adev->gart_pin_size); - } + amdgpu_bo_subtract_pin_size(bo); for (i = 0; i < bo->placement.num_placement; i++) { bo->placements[i].lpfn = 0; -- 2.7.4