From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andi Kleen <andi@firstfloor.org>
Subject: Re: [PATCH] kthread: NUMA aware kthread_create_on_cpu()
Date: Mon, 29 Nov 2010 00:01:47 +0100
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Cc: Andi Kleen <andi@firstfloor.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	netdev <netdev@vger.kernel.org>,
	David Miller <davem@davemloft.net>, Tejun Heo <tj@kernel.org>,
	Rusty Russell <rusty@rustcorp.com.au>
To: Eric Dumazet <eric.dumazet@gmail.com>
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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.