linux-kernel - Re: [PATCH] dmaengine: xgene-dma: Remove memcpy offload support due to performance drop

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Message-ID: <20151014145100.GX27370@localhost>
Date:	Wed, 14 Oct 2015 20:21:00 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	Rameshwar Prasad Sahu <rsahu@....com>
Cc:	dan.j.williams@...el.com, dmaengine@...r.kernel.org, arnd@...db.de,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, jcm@...hat.com,
	patches@....com
Subject: Re: [PATCH] dmaengine: xgene-dma: Remove memcpy offload support due
 to performance drop

On Wed, Oct 14, 2015 at 07:25:07PM +0530, Rameshwar Prasad Sahu wrote:
> The DMA engine supports memory copy, RAID5 XOR, RAID6 PQ, and other
> computations. But the bandwidth of the entire DMA engine is shared
> among all channels. This patch re-configures operations availability
> such that one can achieve maximum performance for XOR and PQ
> computation by removing the memory offload operations.

Applied, thanks

-- 
~Vinod

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