linux-kernel - Re: [PATCH] x86-32: Allocate irq stacks seperate from percpu area

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Message-ID: <20101027153331.GA21789@elte.hu>
Date:	Wed, 27 Oct 2010 17:33:31 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Brian Gerst <brgerst@...il.com>, tj@...nel.org, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86-32: Allocate irq stacks seperate from percpu area


* Ingo Molnar <mingo@...e.hu> wrote:

> > Ingo, can you take care of this all, or should I just take the patch and remove 
> > the multipage stuff manually?
> 
> Sure, i'm queuing up Brian's patch (initially wanted to wait for the NUMA-aware 
> version) and will remove all the multipage pcpu bits - will send you a pull 
> request later today, after a bit of testing.

Btw., the NUMA stuff never really worked percpu alloc, as per Eric's observation:

 | Anyway, I just discovered per_cpu data on my machine (NUMA capable) all sit on a 
 | single node, if 32bit kernel used.

... and in practice it's not really relevant on 32-bit anyway. So we can decouple 
the two issues just fine.

Thanks,

	Ingo
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