On Mon, 6 Apr 2009, David Brownell wrote: > I'd think the first thing to check is two linux-omap PIO flavors: > with vs without the prefetch/postwrite engine. Benchmarking DMA > would be a separate issue. Ditto comparing kernels with/without > write posting.
Makes sense to me. FIFO-less GPMC PIO should be full of fail. > Puzzle: get a dma_copypage() to work faster than copy_page(). > Or a dma_clear_page() faster than clear_page(). Not easy... Doing it via the DMA engine may save power, since MPU can sleep. - Paul -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
