[Linuxarm] Re: [PATCH v2] dma-mapping: benchmark: pretend DMA is transmitting

On Fri, Feb 05, 2021 at 03:00:35PM +1300, Barry Song wrote:

+ __u32 dma_trans_ns; /* time for DMA transmission in ns */ __u64 expansion[10]; /* For future use */

We need to keep the struct size, so the expansion field needs to shrink by the equivalent amount of data that is added in dma_trans_ns.