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Date: Mon, 7 Jun 2010 23:28:23 +0200
Message-ID: <AANLkTilPhof5cnhBCXSzKJSnWl6Vuu2fRts2pBBBNl6K@mail.gmail.com>
Subject: Re: [RFC][PATCH] irq: support IRQ_NESTED_THREAD with non-threaded 
	interrupt handlers
From: Esben Haabendal <esbenhaabendal@gmail.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Esben Haabendal <eha@doredevelopment.dk>, linuxppc-dev@ozlabs.org,
       Marc Zyngier <maz@misterjones.org>, LKML <linux-kernel@vger.kernel.org>,
       Ingo Molnar <mingo@elte.hu>, joachim.eastwood@jotron.com,
       Peter Zijlstra <peterz@infradead.org>,
       David Miller <davem@davemloft.net>
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On Mon, Jun 7, 2010 at 5:06 PM, Thomas Gleixner <tglx@linutronix.de> wrote:

> Maybe you understand now, why I was pretty sure upfront, that your
> approach was wrong even without knowing all the gory details ? :)

I understand.  There is a better solution, which is to use threaded
interrupts where needed.

But I must confess that I am disappointed that you still fail to see
how the pca953x
patch actually eliminates the need for serialization. But I don't
think there is much
point in going on about that.

The phy driver should be rewritten to use a threaded handler, it will
solve my particular problem.
And in the meantime, I have been promised to get the phy interrupts ofloaded
to real CPU interrupt lines :-)

Oh, I still think that the disable_irq_nosync documentaiton is misleading.
Functions that are allowed in a particular context should not call functions
that are not allowed to be called in that context. But now I know :-)

/Esben
-- 
Esben Haabendal, Senior Software Consultant
Dor?Development ApS, Ved Stranden 1, 9560 Hadsund, DK-Denmark
Phone: +45 51 92 53 93, E-mail: eha@doredevelopment.dk
WWW: http://www.doredevelopment.dk
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