netdev - Re: [PATCH V2 2/2] xen-netfront: limit vnic max

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Message-Id: <562A1A6E02000078000ADEFB@prv-mh.provo.novell.com>
Date:	Fri, 23 Oct 2015 03:30:54 -0600
From:	"Jan Beulich" <JBeulich@...e.com>
To:	"Joe Jin" <joe.jin@...cle.com>
Cc:	"Ian Campbell" <ian.campbell@...rix.com>, <wei.liu2@...rix.com>,
	"David S. Miller" <davem@...emloft.net>,
	<xen-devel@...ts.xenproject.org>,
	"Boris Ostrovsky" <boris.ostrovsky@...cle.com>,
	"Konrad Rzeszutek Wilk" <konrad.wilk@...cle.com>,
	<netdev@...r.kernel.org>
Subject: Re: [PATCH V2 2/2] xen-netfront: limit vnic max_queues number
 to online cpus

>>> On 23.10.15 at 11:19, <joe.jin@...cle.com> wrote:
>  
> @@ -164,6 +166,19 @@ struct netfront_rx_info {
>  	struct xen_netif_extra_info extras[XEN_NETIF_EXTRA_TYPE_MAX - 1];
>  };
>  
> +static int xennet_set_max_queues(const char *val, struct kernel_param *kp)
> +{
> +	unsigned int cpus = num_online_cpus();
> +	unsigned int max_queues = simple_strtoul(val, NULL, 10);
> +
> +	if (max_queues == 0 || max_queues > cpus) {
> +		pr_err("max_queues %u is out of range [0 - %u]!\n", 

I suppose you mean "...[1 - %u]!\n" here?

Jan

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