ttm_bo_wait
int ttm_bo_wait(struct ttm_buffer_object *bo, bool interruptible, bool no_wait);
r = ttm_bo_wait(&bo->tbo, true, no_wait);
r = ttm_bo_wait(bo, ctx->interruptible, ctx->no_wait_gpu);
EXPORT_SYMBOL(ttm_bo_wait);
ret = ttm_bo_wait(bo, true, no_wait);
ret = ttm_bo_wait(bo, false, false);
ret = ttm_bo_wait(bo, ctx->interruptible, ctx->no_wait_gpu);
ret = ttm_bo_wait(bo, ctx->interruptible, ctx->no_wait_gpu);
ret = ttm_bo_wait(bo, false, false);
ret = ttm_bo_wait(bo, false, false);
ttm_bo_wait(bo, false, false);