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From: Ingo Molnar <mingo@elte.hu>
To: David Miller <davem@davemloft.net>
Cc: sam@ravnborg.org, kosaki.motohiro@jp.fujitsu.com,
	yinghai@kernel.org, linux-kernel@vger.kernel.org,
	sparclinux@vger.kernel.org, tglx@linutronix.de
Subject: Re: irqnr fallout in gpiolib on sparc32
Date: Wed, 7 Jan 2009 14:02:13 +0100	[thread overview]
Message-ID: <20090107130213.GB3529@elte.hu> (raw)
In-Reply-To: <20090106.082913.97432854.davem@davemloft.net>


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

> From: Ingo Molnar <mingo@elte.hu>
> Date: Tue, 6 Jan 2009 13:57:04 +0100
> 
> > 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.
> 
> Not really, the unificiation didn't change much in this area. [...]

Yeah, i mean - "changed the equation" psychologically, the same way it did 
it on x86.

There's now two files close to each other in the namespace:

 earth4:~/tip> ls -l arch/sparc/kernel/irq*.c
 -rw-rw-r-- 1 mingo mingo 16122 2009-01-07 13:50 arch/sparc/kernel/irq_32.c
 -rw-rw-r-- 1 mingo mingo 26556 2009-01-07 12:34 arch/sparc/kernel/irq_64.c

Each of them crying out loud to be unified. Every time you open irq_64.c 
you'll think "why that ugly _64.c postfix, shouldnt this be irq.c 
instead?" ;-)

That kind of gentle pressure to unify comes straight from the fact that 
there's _32.c and _64.c postfixes around and the postfixes mess up command 
completion when those files are opened, so we notice the non-unified-ness 
again and again.

At least this was what drove many of the x86 unifications. (Mind you, 
irq_32/irq_64.c is still not fully unified on x86 ;)

> [...] That doesn't change the fact that I do intend to genirq'ify 
> sparc32 some time soon. :-)

Cool! :-)

	Ingo

  reply	other threads:[~2009-01-07 13:02 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-01-05 13:29 irqnr fallout in gpiolib on sparc32 Sam Ravnborg
2009-01-05 13:38 ` Ingo Molnar
2009-01-05 13:48   ` Sam Ravnborg
2009-01-05 13:55     ` Ingo Molnar
2009-01-05 20:37       ` David Miller
2009-01-06 12:57         ` Ingo Molnar
2009-01-06 16:29           ` David Miller
2009-01-07 13:02             ` Ingo Molnar [this message]
2009-01-07 13:34               ` Sam Ravnborg
2009-01-07 21:08               ` David Miller
2009-01-06 23:43     ` KOSAKI Motohiro

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