linux-kernel - Re: [PATCH] kthread: ensure locality of task

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Message-ID: <alpine.DEB.2.02.1401301446320.12223@chino.kir.corp.google.com>
Date:	Thu, 30 Jan 2014 14:47:05 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
cc:	Christoph Lameter <cl@...ux.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Nishanth Aravamudan <nacc@...ux.vnet.ibm.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Anton Blanchard <anton@...ba.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tejun Heo <tj@...nel.org>, Oleg Nesterov <oleg@...hat.com>,
	Jan Kara <jack@...e.cz>, Thomas Gleixner <tglx@...utronix.de>,
	Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
	linux-mm@...ck.org, Wanpeng Li <liwanp@...ux.vnet.ibm.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Ben Herrenschmidt <benh@...nel.crashing.org>
Subject: Re: [PATCH] kthread: ensure locality of task_struct allocations

On Wed, 29 Jan 2014, Eric Dumazet wrote:

> > Eric, did you try this when writing 207205a2ba26 ("kthread: NUMA aware 
> > kthread_create_on_node()") or was it always numa_node_id() from the 
> > beginning?
> 
> Hmm, I think I did not try this, its absolutely possible NUMA_NO_NODE
> was better here.
> 

Nishanth, could you change your patch to just return NUMA_NO_NODE for the 
non-kthreadd case?
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