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

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Date:	Sat, 02 Oct 2010 06:46:13 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Thomas Gleixner <tglx@...utronix.de>
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, 2010-10-01 at 15:07 +0200, Thomas Gleixner wrote:
> 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.

Yes, I'm thinking about an arch defined structure like I did for struct
device.

Cheers,
Ben.

> > 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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