Re: isolated memory pools ?

[Muthian Sivathanu]

Hi Ingo,

Thanks!
I looked at the code,  but it seems to be meant for
fixed size objects.  I would like to have something
like a kmalloc interface to my memory pool since I
allocate a bunch of different kinds of structures. 
Any ideas how that can be done ?

thanks again,
Muthian.

--- Ingo Oeser <[e-mail]>
wrote:
> Hi Muthian,
> 
> On Wed, May 14, 2003 at 09:35:58AM -0700, Muthian
> Sivathanu wrote:
> > Ideally, I would like to be able to allocate my
> own
> > memory pool, say, with 10% of the host memory, and
> > then have total control over it, i.e. the rest of
> the
> > kernel should not allocate from this space, and my
> > local free_pages should return memory back to my
> local
> > pool.  One obvious way to do this would be to pin
> > those pages to memory and then write my own memory
> > management routines to handle allocations within
> the
> > pool, but that seems time consuming and hard.  Is
> > there a way the existing kernel memory management
> > routines can be harnessed to manage
> > such an isolated free pool ?
> 
> #include <linux/mempool.h>
> 
> and look at the functions, which implement this.
> 
> linux/mm/mempool.c is the actual implementation.
> 
> This is not exactly, what you want (you CAN allocate
> more than
> your 10% from this pool and the amount over your
> minimum number
> of pages to be reserved is free for the kernel to
> use), but
> should be what you really need.
> 
> Regards
> 
> Ingo Oeser
> 

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