Re: Zero copy between ISR, kernel and User

On Tue, 26 Sep 2006 21:01:45 -0700
Wink Saville <[email protected]> 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 <[email protected]>
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: Zero copy between ISR, kernel and User
    • From: Wink Saville <[email protected]>

• References:
  • Zero copy between ISR, kernel and User
    • From: Wink Saville <[email protected]>

• Prev by Date: Re: [RETRY] [PATCH] load_module: no BUG if module_subsys uninitialized
• Next by Date: Re: GPLv3 Position Statement
• Previous by thread: Zero copy between ISR, kernel and User
• Next by thread: Re: Zero copy between ISR, kernel and User
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]