linux-kernel - Re: [PATCH] x86: arch_probe_nr

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Message-ID: <20090114111949.GO2913@elte.hu>
Date:	Wed, 14 Jan 2009 12:19:49 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Mike Travis <travis@....com>
Cc:	Yinghai Lu <yinghai@...nel.org>, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: arch_probe_nr_irqs


* Mike Travis <travis@....com> wrote:

> Yinghai Lu wrote:
> > Impact: save RAM with large NR_CPUS, get smaller nr_irqs
> > 
> > Signed-off-by: Yinghai Lu <yinghai@...nel.org>
> 
> Built and tested on an 8-core intel system.  Great reduction
> in NR_IRQS:
> 
> 	[    0.000000] NR_IRQS:33024 nr_irqs:320
> 
> Thanks Yinghai!
> 
> Ingo - shall I push this one as well?  (If not, then you
> can add my:
> 
> 	Acked-by: Mike Travis <travis@....com>

yes, please pick it up and i can pull it from you. Please also add a 
longer changelog about the precise effects and perhaps some estimations 
about what the before and after situation is, and perhaps also some bits 
about how it affects normal Linux users as well.

	Ingo
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