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From: Eliezer Tamir <eliezer.tamir@linux.intel.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David Miller <davem@davemloft.net>,
	linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
	Jesse Brandeburg <jesse.brandeburg@intel.com>,
	Don Skidmore <donald.c.skidmore@intel.com>,
	e1000-devel@lists.sourceforge.net,
	Willem de Bruijn <willemb@google.com>,
	Ben Hutchings <bhutchings@solarflare.com>,
	Andi Kleen <andi@firstfloor.org>, HPA <hpa@zytor.com>,
	Eilon Greenstien <eilong@broadcom.com>,
	Or Gerlitz <or.gerlitz@gmail.com>,
	Amir Vadai <amirv@mellanox.com>,
	Alex Rosenbaum <alexr@mellanox.com>,
	Avner Ben Hanoch <avnerb@mellanox.com>,
	Or Kehati <ork@mellanox.com>,
	Eliezer Tamir <eliezer@tamir.org.il>
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	[thread overview]
Message-ID: <51B86FA3.1030306@linux.intel.com> (raw)
In-Reply-To: <1371041065.3252.59.camel@edumazet-glaptop>

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

WARNING: multiple messages have this Message-ID (diff)
From: Eliezer Tamir <eliezer.tamir@linux.intel.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
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>
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	[thread overview]
Message-ID: <51B86FA3.1030306@linux.intel.com> (raw)
In-Reply-To: <1371041065.3252.59.camel@edumazet-glaptop>

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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  reply	other threads:[~2013-06-12 12:55 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-06-12 11:19 [PATCH v2 net-next 0/3] net: low latency sockets follow ups Eliezer Tamir
2013-06-12 11:19 ` Eliezer Tamir
2013-06-12 11:19 ` [PATCH v2 net-next 1/3] net: remove NET_LL_RX_POLL config menue Eliezer Tamir
2013-06-12 11:19   ` Eliezer Tamir
2013-06-12 11:20 ` [PATCH v2 net-next 2/3] net: change sysctl_net_ll_poll into an unsigned int Eliezer Tamir
2013-06-12 11:20   ` Eliezer Tamir
2013-06-12 12:04   ` Avner Ben Hanoch
2013-06-12 12:04     ` Avner Ben Hanoch
2013-06-12 12:44     ` Eliezer Tamir
2013-06-12 12:44       ` Eliezer Tamir
2013-06-12 11:20 ` [PATCH v2 net-next 3/3] net: add socket option for low latency polling Eliezer Tamir
2013-06-12 11:20   ` Eliezer Tamir
2013-06-12 12:44   ` Eric Dumazet
2013-06-12 12:54     ` Eliezer Tamir [this message]
2013-06-12 12:54       ` Eliezer Tamir
2013-06-12 12:58       ` Eliezer Tamir
2013-06-12 13:55       ` Eric Dumazet
2013-06-12 13:55         ` Eric Dumazet
2013-06-12 11:22 ` [PATCH v2 sockperf] sockperf: add SO_LL socketop support Eliezer Tamir
2013-06-12 11:22   ` Eliezer Tamir

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