On Thu, Aug 02, 2007 at 05:52:28PM -0700, Christoph Lameter wrote:

On Fri, 3 Aug 2007, Nick Piggin wrote:

quoted

quoted

Add a (slow) kmalloc_policy? Strict Object round robin for interleave 
right? It probably needs its own RR counter otherwise it disturbs the per 
task page RR.

I guess interleave could be nice for other things, but for this, I
just want MPOL_BIND to work. The problem is that the pagetable copying
etc codepaths cover a lot of code and some of it (eg pagetable allocation)
is used for other paths as well.. so I was just hoping to do something
less intrusive for now if possible.

Ok. So MPOL_BIND on a single node. We would have to save the current 
memory policy on the stack and then restore it later. Then you would need 
a special call anyways.

Well the memory policy will already be set to MPOL_BIND at this point.
The slab allocator I think would just have to honour the node at the
object level.


 

Or is there some way to execute the code on the target cpu? That may be 
the easiest solution.

It isn't so easy... we'd have to migrate the parent process to the new
node to perform the setup, and then migrate it back again afterwards.

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