On Thursday 12 April 2012, Marek Szyprowski wrote: > Scatter lists were initially designed for the disk based block io operations, > hence the presence of the in-page offsets and lengths for each chunk. For > multimedia use cases providing an array of struct pages and asking dma-mapping > to map them into contiguous memory is probably all we need. I wonder if > introducing such new calls is a good idea. Anrd, what do think? It will > definitely simplify the drivers and improve the code understanding. On the > other hand it requires a significant amount of work in the dma-mapping > framework for all architectures, but that's not a big issue for me. My feeling is that it's too much like the existing _sg version, so I wouldn't add yet another variant. While having a simple page array is definitely simpler and potentially faster, I think the API is already too complex and we need to be very careful with new additions. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
