From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Subject: Re: [PATCH v2 net-next 3/3] net: add socket option
 for low latency polling
Date: Wed, 12 Jun 2013 15:54:59 +0300
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Cc: Willem de Bruijn <willemb@google.com>, Or Kehati <ork@mellanox.com>,
	Or Gerlitz <or.gerlitz@gmail.com>,
	e1000-devel@lists.sourceforge.net, netdev@vger.kernel.org,
	HPA <hpa@zytor.com>, Amir Vadai <amirv@mellanox.com>,
	Jesse Brandeburg <jesse.brandeburg@intel.com>,
	Alex Rosenbaum <alexr@mellanox.com>, linux-kernel@vger.kernel.org,
	Eliezer Tamir <eliezer@tamir.org.il>,
	Avner Ben Hanoch <avnerb@mellanox.com>, Andi Kleen <andi@firstfloor.org>,
	Ben Hutchings <bhutchings@solarflare.com>,
	Eilon Greenstien <eilong@broadcom.com>, David Miller <davem@davemloft.net>
To: Eric Dumazet <eric.dumazet@gmail.com>
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On 12/06/2013 15:44, Eric Dumazet wrote:
> On Wed, 2013-06-12 at 14:20 +0300, Eliezer Tamir wrote:
>> adds a socket option for low latency polling.
>> This allows overriding the global sysctl value with a per-socket one.
>>
>> Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com>
>> ---
>
> It seems EXPORT_SYMBOL_GPL(sysctl_net_ll_poll) can now be removed ?

I think we would need it for poll.

Poll needs a way that is not dependent on any individual socket to know
how long to busy-wait, since we have to know it before we poll any
individual socket.

The patch I have right now for poll is not ready (and not fully tested).
But I can post it as an RFC if you want.

-Eliezer

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