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The overhead of sysfs directory creation/teardown during dma_buf_attach()/dma_buf_detach() is causing perf regressions for certain drivers. Bug: 192621117 Change-Id: I908aa3b2717bf2e183628be3446e0069ce24c68a Fixes: 90935b28546d (BACKPORT: FROMLIST: dmabuf: Add the capability to expose DMA-BUF stats in sysfs) Signed-off-by: Hridya Valsaraju <hridya@google.com>