linux-kernel - Re: [PATCH 15/40] autonuma: knuma

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Message-ID: <4FEDF49A.9020907@redhat.com>
Date:	Fri, 29 Jun 2012 14:31:54 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Andrea Arcangeli <aarcange@...hat.com>
CC:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Hillf Danton <dhillf@...il.com>, Dan Smith <danms@...ibm.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, Paul Turner <pjt@...gle.com>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	Mike Galbraith <efault@....de>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Lai Jiangshan <laijs@...fujitsu.com>,
	Bharata B Rao <bharata.rao@...il.com>,
	Lee Schermerhorn <Lee.Schermerhorn@...com>,
	Johannes Weiner <hannes@...xchg.org>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Christoph Lameter <cl@...ux.com>,
	Alex Shi <alex.shi@...el.com>,
	Mauricio Faria de Oliveira <mauricfo@...ux.vnet.ibm.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Don Morris <don.morris@...com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: Re: [PATCH 15/40] autonuma: knuma_migrated per NUMA node queues

On 06/28/2012 08:55 AM, Andrea Arcangeli wrote:

> diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
> index 2427706..d53b26a 100644
> --- a/include/linux/mmzone.h
> +++ b/include/linux/mmzone.h
> @@ -697,6 +697,12 @@ typedef struct pglist_data {
>   	struct task_struct *kswapd;
>   	int kswapd_max_order;
>   	enum zone_type classzone_idx;
> +#ifdef CONFIG_AUTONUMA
> +	spinlock_t autonuma_lock;
> +	struct list_head autonuma_migrate_head[MAX_NUMNODES];
> +	unsigned long autonuma_nr_migrate_pages;
> +	wait_queue_head_t autonuma_knuma_migrated_wait;
> +#endif
>   } pg_data_t;
>
>   #define node_present_pages(nid)	(NODE_DATA(nid)->node_present_pages)

Once again, the data structure could use documentation.

What are these things for?

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