linux-kernel - Re: [patch 46/47] powerpc: Use new irq allocator

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Message-ID: <alpine.LFD.2.00.1010011504380.2416@localhost6.localdomain6>
Date:	Fri, 1 Oct 2010 15:07:19 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
cc:	LKML <linux-kernel@...r.kernel.org>, linux-arch@...r.kernel.org,
	Linus Torvalds <torvalds@...l.org>,
	Andrew Morton <akpm@...ux-foundation.org>, x86@...nel.org,
	Peter Zijlstra <peterz@...radead.org>,
	Paul Mundt <lethal@...ux-sh.org>,
	Russell King <linux@....linux.org.uk>,
	David Woodhouse <dwmw2@...radead.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Yinghai Lu <yinghai@...nel.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: [patch 46/47] powerpc: Use new irq allocator

On Fri, 1 Oct 2010, Benjamin Herrenschmidt wrote:

> On Thu, 2010-09-30 at 23:18 +0000, Thomas Gleixner wrote:
> > plain text document attachment (powerpc-use-new-allocator.patch)
> > Use the new functions and free the descriptor when the virq is
> > destroyed.
> 
> Looks ok as a first pass, but we should go further and replace the
> allocator we have in powerpc to use yours instead.
> 
> Then I should get rid of my big irq_map that maps virq to HW number &
> domain pointers and instead put those in the irq data. Any objection to
> me sticking some archdata there for that purpose ?

No, though if we can avoid another void pointer and have a sensible
data structure for it would be nice.
 
> That would make things much cleaner and in fact move one large step
> toward being able to make powerpc virq scheme generic, which seems to be
> a good idea from what I've heard :-)

Yep.

Thanks,

	tglx
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