linux-kernel - dmaengine/Query: What about scatter/gather for mem to mem transfers.

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Message-ID: <4EE038BD.7010705@st.com>
Date:	Thu, 8 Dec 2011 09:40:37 +0530
From:	Viresh Kumar <viresh.kumar@...com>
To:	"Koul, Vinod" <vinod.koul@...el.com>,
	Dan Williams <dan.j.williams@...el.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Shiraz HASHIM <shiraz.hashim@...com>,
	Armando VISCONTI <armando.visconti@...com>,
	Pratyush ANAND <pratyush.anand@...com>,
	deepak sikri <deepak.sikri@...com>,
	Vipin KUMAR <vipin.kumar@...com>,
	Vipul Kumar SAMAR <vipulkumar.samar@...com>,
	Vincenzo FRASCINO <Vincenzo.FRASCINO@...com>,
	Mirko GARDI <mirko.gardi@...com>,
	Rajeev KUMAR <rajeev-dlh.kumar@...com>,
	Amit VIRDI <amit.virdi@...com>,
	Bhupesh SHARMA <bhupesh.sharma@...com>
Subject: dmaengine/Query: What about scatter/gather for mem to mem transfers.

Hi Dan/Vinod

I am looking to implement scatter/gather interface for mem to mem transfers.
But before that, i wanted to know your feedback about it.

In my case, i have memory scattered in pages and performance is not good, if
i submit transfers page by page.

If you are Okay with the idea, i can implement it and submit soon.

-- 
viresh
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