From mboxrd@z Thu Jan 1 00:00:00 1970 From: maxime.ripard@free-electrons.com (Maxime Ripard) Date: Mon, 6 Jul 2015 12:19:22 +0200 Subject: [PATCH 0/2] dmaengine: Add scatter-gathered memset support Message-ID: <1436177964-19380-1-git-send-email-maxime.ripard@free-electrons.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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