On 12/5/2015 3:10 AM, Vinod Koul wrote:
> On Mon, Nov 16, 2015 at 04:53:27PM -0500, Sinan Kaya wrote:
>> One of the things I'm interested in is to use a memcpy capable DMA
>> engine HW to optimize user space and kernel space parameter copying.
>>
>> Of course, this will not be viable for all parame
On Mon, Nov 16, 2015 at 04:53:27PM -0500, Sinan Kaya wrote:
> One of the things I'm interested in is to use a memcpy capable DMA
> engine HW to optimize user space and kernel space parameter copying.
>
> Of course, this will not be viable for all parameter sizes but I can see
> this being useful.
On Mon, 2015-11-16 at 23:19 +, Sinan Kaya wrote:
> On 11/16/2015 5:57 PM, Jiang, Dave wrote:
> > > One of the things I'm interested in is to use a memcpy capable
> > > DMA
> > > > engine HW to optimize user space and kernel space parameter
> > > > copying.
> > Have you looked at why NET_DMA was
On 11/16/2015 5:57 PM, Jiang, Dave wrote:
>> One of the things I'm interested in is to use a memcpy capable DMA
>> > engine HW to optimize user space and kernel space parameter copying.
> Have you looked at why NET_DMA was deprecated and using DMA engine to
> do kernel->user copy could be a problem
On Mon, 2015-11-16 at 21:53 +, Sinan Kaya wrote:
> One of the things I'm interested in is to use a memcpy capable DMA
> engine HW to optimize user space and kernel space parameter copying.
Have you looked at why NET_DMA was deprecated and using DMA engine to
do kernel->user copy could be a p
One of the things I'm interested in is to use a memcpy capable DMA
engine HW to optimize user space and kernel space parameter copying.
Of course, this will not be viable for all parameter sizes but I can see
this being useful. The goal is to save power in the cost of little
performance.
Before I
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