Re: [PATCH] kthread: NUMA aware kthread_create_on_cpu()

Andi Kleen
2010-11-28T23:01:47Z

On Sun, Nov 28, 2010 at 11:51:51PM +0100, Eric Dumazet wrote:
> > Also this messes up the policy of the caller process. You really
> > need to save/restore it.
>
> Well, caller process duty is to create kthreads in a loop.

In this case any other allocations it may do are still on those
nodes.

> > Problem is that this ends up in architecture specific code
> > for the stack, so may be a larger patch.
>
> I suggest arches that need slab to allocate kthread stacks do the
> appropriate changes, because I am not able to make them myself.
>
> On x86, we use page allocator only, so NUMA mempolicy is used.

task_struct is always allocated from slab.

-Andi

--
ak@linux.intel.com -- Speaking for myself only.