Hi Vinod, Here is a patch serie that adds a new dmaengine operation for scatter-gathered memset.
Indeed, doing a memset over a discontiguous buffer is quite inefficient at the moment, since you have to create and submit each chunk separately, which might result in a huge list of transfers, while some controllers can handle that just fine. Let me know what you think, Maxime Maxime Ripard (2): dmaengine: Add scatter-gathered memset dmaengine: xdmac: Add scatter gathered memset support drivers/dma/at_xdmac.c | 166 +++++++++++++++++++++++++++++++++++++++++++++- include/linux/dmaengine.h | 5 ++ 2 files changed, 170 insertions(+), 1 deletion(-) -- 2.4.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
