linux-kernel - Re: [PATCH 08/10] net: remove NR

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Message-ID: <20080325055752.GA4774@martell.zuzino.mipt.ru>
Date:	Tue, 25 Mar 2008 08:57:52 +0300
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	Mike Travis <travis@....com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Patrick McHardy <kaber@...sh.net>
Subject: Re: [PATCH 08/10] net: remove NR_CPUS arrays in net/core/dev.c

On Mon, Mar 24, 2008 at 07:20:02PM -0700, Mike Travis wrote:
> Remove the fixed size channels[NR_CPUS] array in
> net/core/dev.c and dynamically allocate array based on
> nr_cpu_ids.

> @@ -4362,6 +4362,13 @@ netdev_dma_event(struct dma_client *clie
>   */
>  static int __init netdev_dma_register(void)
>  {
> +	net_dma.channels = kzalloc(nr_cpu_ids * sizeof(struct net_dma),
> +								GFP_KERNEL);
> +	if (unlikely(net_dma.channels)) {

		     !net_dma.channels

> +		printk(KERN_NOTICE
> +				"netdev_dma: no memory for net_dma.channels\n");
> +		return -ENOMEM;
> +	}

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