linux-kernel - Re: [RFC] HOWTO use NAPI to reduce TX interrupts

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Message-ID: <20060821235244.GJ5427@austin.ibm.com>
Date:	Mon, 21 Aug 2006 18:52:44 -0500
From:	linas@...tin.ibm.com (Linas Vepstas)
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Stephen Hemminger <shemminger@...l.org>, akpm@...l.org,
	netdev@...r.kernel.org, James K Lewis <jklewis@...ibm.com>,
	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	Jens Osterkamp <Jens.Osterkamp@...ibm.com>,
	Jeff Garzik <jgarzik@...ox.com>,
	David Miller <davem@...emloft.net>
Subject: Re: [RFC] HOWTO use NAPI to reduce TX interrupts

On Sat, Aug 19, 2006 at 01:25:18PM +0200, Arnd Bergmann wrote:
> 
> What is the best way to treat the IRQ mask for TX interrupts?
> I guess it should be roughly:
> 
> - off when we expect ->poll() to be called, i.e. after calling
>   netif_rx_schedule() or returning after a partial rx from poll().

Under what circumstance does one turn TX interrupts back on?
I couldn't quite figure that out.

--linas
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