Messages in this thread | | | From | Stephen Hemminger <> | Subject | Re: Zero copy between ISR, kernel and User | Date | Wed, 27 Sep 2006 12:10:30 -0700 |
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On Tue, 26 Sep 2006 21:01:45 -0700 Wink Saville <wink@saville.com> wrote:
> Hello, > > I would like to allow the transferring of data between ISR's, kernel and > user code, without requiring copying. I envision allocating buffers in > the kernel and then mapping them so that they appear at the same > addresses to all code, and never being swapped out of memory. > > Is this feasible for all supported Linux architectures and is there > existing code that someone could point me towards? > > Regards, > > Wink Saville >
Your better off having application mmap a device, then transfer the data to there. Something like AF_PACKET.
-- Stephen Hemminger <shemminger@osdl.org> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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