On Mon, 11 Apr 2016 15:02:51 -0700 Alexander Duyck <alexander.duyck@xxxxxxxxx> wrote: > Have you taken a look at possibly trying to optimize the DMA pool API > to work with pages? It sounds like it is supposed to do something > similar to what you are wanting to do. Yes, I have looked at the mm/dmapool.c API. AFAIK this is for DMA coherent memory (see use of dma_alloc_coherent/dma_free_coherent). What we are doing is "streaming" DMA memory, when processing the RX ring. (NIC are only using DMA coherent memory for the descriptors, which are allocated on driver init) -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat Author of http://www.iptv-analyzer.org LinkedIn: http://www.linkedin.com/in/brouer -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>