linux-kernel - Re: [PATCH] x86_64: Double the per cpu area size

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Date:	Mon, 7 Aug 2006 17:30:47 +0200
From:	Andi Kleen <ak@...e.de>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Andrew Morton <akpm@...l.org>,
	"Protasevich, Natalie" <Natalie.Protasevich@...sys.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86_64: Double the per cpu area size


>  
>  #include <asm/pda.h>
>  
> +#define PERCPU_ENOUGH_ROOM 65536

I would prefer if you didn't do that unconditionally. Can you make
it dependent on NR_IRQS or so?  Can you add a test for CONFIG_TINY
to make it smaller?

Also longer term it should really properly fixed

-Andi
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