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Date: Fri, 25 Oct 2002 14:40:01 +0200
From: Andi Kleen <ak@muc.de>
To: Mikael Pettersson <mikpe@csd.uu.se>
Cc: Andi Kleen <ak@muc.de>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86 performance counters driver 3.0-pre2 for 2.5.44: [2/4] x86 support
Message-ID: <20021025124001.GA29937@averell>
References: <200210241500.RAA03585@kim.it.uu.se> <m3wuo7omzg.fsf@averell.firstfloor.org> <15801.14413.909403.323948@kim.it.uu.se>
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> For what values of cpu is per_cpu(var,cpu) valid? For those where
> cpu_online(cpu) is true, or those where cpu_possible(cpu) is true?
> (I need to convert a memset() on the per_cpu_cache[] array to the
> per_cpu(,) framework.)

Currently for cpu_possible(), but there is a patchkit around that
makes it only true for cpu_online() so better assume that. 
Of course that would require a hotplug CPU handler, but I would
just ignore that for now.

-Andi