Messages in this thread | | | Date | Thu, 22 Mar 2012 17:14:12 +0400 | From | Sergei Shtylyov <> | Subject | Re: [PATCH] ep93xx: Implement double buffering for M2M DMA channels |
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Hello.
On 22-03-2012 14:00, Rafal Prylowski wrote:
>> I haven't looked through the patch yet, since I'm waiting on more >> information from Mika and Hartley's testing.
>> However, the commit log doesn't tell me why we want this change. Is it a >> performance improvement? If so, do you have some numbers that we can >> paste into the commit log?
> In principle, using double buffering should be faster than using only > one buffer and disabling/enabling channel each time. But my measurements > doesn't show any significant change.
> The real reason for this change is that current code is not 100% reliable > in IDE-DMA (I'm planning to submit ep93xx ide driver to linux-ide soon).
IDE or libata driver? Asking because IDE drivers are not accepted anymore.
WBR, Sergei
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