netdev - Re: [PATCH v8 net-next 2/7] net: add low latency socket poll

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Date:	Mon, 3 Jun 2013 15:22:29 +0300
From:	Amir Vadai <amirv@...lanox.com>
To:	Eliezer Tamir <eliezer.tamir@...ux.intel.com>
CC:	David Miller <davem@...emloft.net>, <linux-kernel@...r.kernel.org>,
	<netdev@...r.kernel.org>,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	Don Skidmore <donald.c.skidmore@...el.com>,
	<e1000-devel@...ts.sourceforge.net>,
	Willem de Bruijn <willemb@...gle.com>,
	Eric Dumazet <erdnetdev@...il.com>,
	Ben Hutchings <bhutchings@...arflare.com>,
	Andi Kleen <andi@...stfloor.org>, HPA <hpa@...or.com>,
	Eilon Greenstien <eilong@...adcom.com>,
	Or Gerlitz <or.gerlitz@...il.com>,
	Alex Rosenbaum <alexr@...lanox.com>,
	Eliezer Tamir <eliezer@...ir.org.il>
Subject: Re: [PATCH v8 net-next 2/7] net: add low latency socket poll

On 03/06/2013 11:01, Eliezer Tamir wrote:
> diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
> index 741db5fc..ae98c95 100644
> --- a/net/core/sysctl_net_core.c
> +++ b/net/core/sysctl_net_core.c
> @@ -19,6 +19,7 @@
>  #include <net/ip.h>
>  #include <net/sock.h>
>  #include <net/net_ratelimit.h>
> +#include <net/ll_poll.h>
>  
>  static int one = 1;
>  
> @@ -284,6 +285,15 @@ static struct ctl_table net_core_table[] = {
>  		.proc_handler	= flow_limit_table_len_sysctl
>  	},
>  #endif /* CONFIG_NET_FLOW_LIMIT */
> +#ifdef CONFIG_NET_LL_RX_POLL
> +	{
> +		.procname	= "low_latency_poll",
> +		.data		= &sysctl_net_ll_poll,
> +		.maxlen		= sizeof(unsigned long),
One more thing I just noticed: should be 'sizeof(int)'.
Because proc_dointvec is expecting an int, sizeof(unsigned long) will
produce an array of two ints.


> +		.mode		= 0644,
> +		.proc_handler	= proc_dointvec
> +	},
> +#endif
>  #endif /* CONFIG_NET */
>  	{
>  		.procname	= "netdev_budget",

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