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drm/ttm: flush the fence on the bo after we individualize the reservation object
As we move the ttm_bo_individualize_resv() upwards, we need flush the copied fence too. Otherwise the driver keeps waiting for fence. run&Kill kfdtest, then perf top. 25.53% [ttm] [k] ttm_bo_delayed_delete 24.29% [kernel] [k] dma_resv_test_signaled_rcu 19.72% [kernel] [k] ww_mutex_lock Fix: 378e2d5b("drm/ttm: fix ttm_bo_cleanup_refs_or_queue once more") Signed-off-by: xinhui pan <xinhui.pan@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/series/72339/ Signed-off-by: Christian König <christian.koenig@amd.com>
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1 changed files with 3 additions and 1 deletions
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@ -491,8 +491,10 @@ static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo)
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dma_resv_unlock(bo->base.resv);
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}
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if (bo->base.resv != &bo->base._resv)
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if (bo->base.resv != &bo->base._resv) {
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ttm_bo_flush_all_fences(bo);
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dma_resv_unlock(&bo->base._resv);
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}
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error:
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kref_get(&bo->list_kref);
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