netdev - Re: [PATCH 1/2] rps: core implementation

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Message-Id: <20091117.232147.59648714.davem@davemloft.net>
Date:	Tue, 17 Nov 2009 23:21:47 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	therbert@...gle.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 1/2] rps: core implementation

From: Tom Herbert <therbert@...gle.com>
Date: Mon, 16 Nov 2009 08:43:05 -0800

> On Mon, Nov 16, 2009 at 3:19 AM, David Miller <davem@...emloft.net> wrote:
>> {,__}send_remote_softirq() doesn't work? :-)
>>
> NET_RPS_SOFTIRQ is intended to provide coalescing of IPIs.
> 
> send_remote_softirq could be used, but we would also need to get the
> napi structure on the remote cpu poll list so that would probably need
> to be protected by locks (something like __napi_schedule_oncpu could
> be defined).  Would this be better to do?

We talked about this several times in the past too.  Let me think some
more about this, I want to consider all of the issues a bit before
making any suggestions.

Thanks.
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