Ping?

Am 18.10.19 um 13:58 schrieb Christian König:
This way the TTM is destroyed with the correct dma_resv object
locked and we can even pipeline imported BO evictions.

v2: Limit this to only cases when the parent object uses a separate
     reservation object as well. This fixes another OOM problem.

Signed-off-by: Christian König <christian.koe...@amd.com>
---
  drivers/gpu/drm/ttm/ttm_bo_util.c | 16 +++++++++-------
  1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c 
b/drivers/gpu/drm/ttm/ttm_bo_util.c
index e030c27f53cf..45e440f80b7b 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_util.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
@@ -512,7 +512,9 @@ static int ttm_buffer_object_transfer(struct 
ttm_buffer_object *bo,
        kref_init(&fbo->base.kref);
        fbo->base.destroy = &ttm_transfered_destroy;
        fbo->base.acc_size = 0;
-       fbo->base.base.resv = &fbo->base.base._resv;
+       if (bo->base.resv == &bo->base._resv)
+               fbo->base.base.resv = &fbo->base.base._resv;
+
        dma_resv_init(fbo->base.base.resv);
        ret = dma_resv_trylock(fbo->base.base.resv);
        WARN_ON(!ret);
@@ -711,7 +713,7 @@ int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
                if (ret)
                        return ret;
- dma_resv_add_excl_fence(ghost_obj->base.resv, fence);
+               dma_resv_add_excl_fence(&ghost_obj->base._resv, fence);
/**
                 * If we're not moving to fixed memory, the TTM object
@@ -724,7 +726,7 @@ int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
                else
                        bo->ttm = NULL;
- ttm_bo_unreserve(ghost_obj);
+               dma_resv_unlock(&ghost_obj->base._resv);
                ttm_bo_put(ghost_obj);
        }
@@ -767,7 +769,7 @@ int ttm_bo_pipeline_move(struct ttm_buffer_object *bo,
                if (ret)
                        return ret;
- dma_resv_add_excl_fence(ghost_obj->base.resv, fence);
+               dma_resv_add_excl_fence(&ghost_obj->base._resv, fence);
/**
                 * If we're not moving to fixed memory, the TTM object
@@ -780,7 +782,7 @@ int ttm_bo_pipeline_move(struct ttm_buffer_object *bo,
                else
                        bo->ttm = NULL;
- ttm_bo_unreserve(ghost_obj);
+               dma_resv_unlock(&ghost_obj->base._resv);
                ttm_bo_put(ghost_obj);
} else if (from->flags & TTM_MEMTYPE_FLAG_FIXED) {
@@ -836,7 +838,7 @@ int ttm_bo_pipeline_gutting(struct ttm_buffer_object *bo)
        if (ret)
                return ret;
- ret = dma_resv_copy_fences(ghost->base.resv, bo->base.resv);
+       ret = dma_resv_copy_fences(&ghost->base._resv, bo->base.resv);
        /* Last resort, wait for the BO to be idle when we are OOM */
        if (ret)
                ttm_bo_wait(bo, false, false);
@@ -845,7 +847,7 @@ int ttm_bo_pipeline_gutting(struct ttm_buffer_object *bo)
        bo->mem.mem_type = TTM_PL_SYSTEM;
        bo->ttm = NULL;
- ttm_bo_unreserve(ghost);
+       dma_resv_unlock(&ghost->base._resv);
        ttm_bo_put(ghost);
return 0;

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