linux-kernel - Re: irqnr fallout in gpiolib on sparc32

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Message-ID: <20090106125704.GC20407@elte.hu>
Date:	Tue, 6 Jan 2009 13:57:04 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	David Miller <davem@...emloft.net>
Cc:	sam@...nborg.org, kosaki.motohiro@...fujitsu.com,
	yinghai@...nel.org, linux-kernel@...r.kernel.org,
	sparclinux@...r.kernel.org, tglx@...utronix.de
Subject: Re: irqnr fallout in gpiolib on sparc32

* David Miller <davem@...emloft.net> wrote:

> From: Ingo Molnar <mingo@...e.hu>
> Date: Mon, 5 Jan 2009 14:55:08 +0100
> 
> > * Sam Ravnborg <sam@...nborg.org> wrote:
> > 
> > > Dave has mentioned this but we are not working actively on it yet.
> > 
> > would be cool to do it - i think sparc32 is one of the last major 
> > physical architectures to not be on genirq -
> 
> m68k remains to be converted over to genirq as well

yeah - but m68k has been a holdout from pretty much every optional core 
kernel facility that has been introduced in the past 5-10 years. So if 
sparc32 converts to genirq we have a stronger case for saying:

   "Convert, else ..."

[ where the three dots stands for something not nice. ]

Sparc32 on the other hand had a clean IRQ layer long before x86 found its 
desire for a clean genirq layer - so genirq is a nuisance for Sparc32 at 
best and it deserves none of the not nice actions. What i am hoping for is 
that perhaps the Sparc unification changed that equation.

	Ingo
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