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drm/amdgpu: Warn and update pin_size values when destroying a pinned BO 

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 <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michel Dänzer 2018-07-11 12:42:55 +02:00 committed by Alex Deucher
parent a5ccfe5c20
commit 15e6b76880
1 changed files with 25 additions and 7 deletions
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32
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
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@ -63,11 +63,35 @@ 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);
struct amdgpu_bo *bo = ttm_to_amdgpu_bo(tbo);
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);
@ -968,13 +992,7 @@ 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;