linux-kernel - Re: [PATCH 16/40] autonuma: init knuma

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Message-ID: <4FEDF562.1080003@redhat.com>
Date:	Fri, 29 Jun 2012 14:35:14 -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 16/40] autonuma: init knuma_migrated queues

On 06/28/2012 08:55 AM, Andrea Arcangeli wrote:
> Initialize the knuma_migrated queues at boot time.
>
> Signed-off-by: Andrea Arcangeli<aarcange@...hat.com>
> ---
>   mm/page_alloc.c |   11 +++++++++++
>   1 files changed, 11 insertions(+), 0 deletions(-)
>
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index a9710a4..48eabe9 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -59,6 +59,7 @@
>   #include<linux/prefetch.h>
>   #include<linux/migrate.h>
>   #include<linux/page-debug-flags.h>
> +#include<linux/autonuma.h>
>
>   #include<asm/tlbflush.h>
>   #include<asm/div64.h>
> @@ -4348,8 +4349,18 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat,
>   	int nid = pgdat->node_id;
>   	unsigned long zone_start_pfn = pgdat->node_start_pfn;
>   	int ret;
> +#ifdef CONFIG_AUTONUMA
> +	int node_iter;
> +#endif
>
>   	pgdat_resize_init(pgdat);
> +#ifdef CONFIG_AUTONUMA
> +	spin_lock_init(&pgdat->autonuma_lock);
> +	init_waitqueue_head(&pgdat->autonuma_knuma_migrated_wait);
> +	pgdat->autonuma_nr_migrate_pages = 0;
> +	for_each_node(node_iter)
> +		INIT_LIST_HEAD(&pgdat->autonuma_migrate_head[node_iter]);
> +#endif

Should this be a __paginginit function inside one of the
autonuma files, so we can avoid the ifdefs here?

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