On 2011-04-20 17:12, Orjan Friberg wrote:
What are my options (besides using mmap)?
It looks like kmalloc + dma_map_single for the DMA destination buffer and then dma_sync_single_for_{cpu,device} around the call to copy_to_user pretty much does the trick. At least the %sys load measured with mpstat goes from 13% to 2%.
-- Orjan Friberg FlatFrog Laboratories AB -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
