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
next prev parent 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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