Re: [rtl] RTL/Linux shared memory

["Ian Ridley" <iridley@ingenico.com.au>]

> Hi again RTLers!
> 
> A while ago Ian Ridley <iridley@ingenico.com.au> posted a kernel
> patch for RTL/Linux shared memory. I find an approach of this kind
> to "nice" shared memory handling important for three reasons;
> 
>     1) More than 4 MB of RT shared memory must be supported....
>     2) Shared memory (and RTL in general) should be as much
>        plug'n'play as possible,...
>     3) RT shared memory should be a flexible system resource that
>        allows several applications to take advantage of it
>        simultaneously in the usual UNIX spirit....
>
These are largely the reasons why I created the patch in the first 
place. Previous methods for sharing memory with Linux processes and 
RT tasks are at best clumsy and inefficient. My aim was to create a 
system that did not require the pre-reserving of physical memory but 
rather allowed for dynamic allocation of memory by any RT tasks that 
needed shared memory.

> 
> So, what's going on with RT shared memory? Has any further work been
> done?
> 
>

I haven't done much more recently. Its not that I've abandoned the 
idea, it's just that I haven't had much free time lately to play 
around with it. I did have however some ideas for taking it all a few 
steps further. Also it needs to be made to work with 2.1.xx kernels 
as well which it won't currently do.

Anyway it nice to know that someone else is taking an intertest.
Regards,

Ian Ridley
mailto:iridley@ingenico.com.au

--- [rtl] ---
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