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authorAlexandre Bounine <alexandre.bounine@idt.com>2016-08-02 21:06:46 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2016-08-02 23:35:35 (GMT)
commitf5485eb0b6eb8a3e5841cfea34a930822f7252bc (patch)
tree1638a39773d96054e188a4d3f3c47812e3bf3818 /drivers/rapidio
parente519685de3e44bb013d81f5ead04ac4b33c9b3a1 (diff)
rapidio/tsi721_dma: advance queue processing from transfer submit call
Add advancing transfer queue immediately from transfer submit call. DMA performance improvement: This will start transfer without waiting for 'issue_pending' command if there is no DMA transfer in progress. Link: http://lkml.kernel.org/r/1469125134-16523-8-git-send-email-alexandre.bounine@idt.com Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com> Cc: Barry Wood <barry.wood@idt.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rapidio')
-rw-r--r--drivers/rapidio/devices/tsi721_dma.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/rapidio/devices/tsi721_dma.c b/drivers/rapidio/devices/tsi721_dma.c
index 13c669b..e2a4185 100644
--- a/drivers/rapidio/devices/tsi721_dma.c
+++ b/drivers/rapidio/devices/tsi721_dma.c
@@ -726,6 +726,7 @@ static dma_cookie_t tsi721_tx_submit(struct dma_async_tx_descriptor *txd)
cookie = dma_cookie_assign(txd);
desc->status = DMA_IN_PROGRESS;
list_add_tail(&desc->desc_node, &bdma_chan->queue);
+ tsi721_advance_work(bdma_chan, NULL);
spin_unlock_bh(&bdma_chan->lock);
return cookie;

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