Date: Sun, 20 Mar 2005 18:32:03 -0500
From: Dave Jones <davej@redhat.com>
To: Adrian Bunk <bunk@stusta.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [2.6 patch] i386/x86_64 mpparse.c: kill maxcpus
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	Adrian Bunk <bunk@stusta.de>, linux-kernel@vger.kernel.org
References: <20050320192549.GP4449@stusta.de> <20050320224233.GB26230@redhat.com> <20050320231232.GY4449@stusta.de>
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On Mon, Mar 21, 2005 at 12:12:32AM +0100, Adrian Bunk wrote:
 > On Sun, Mar 20, 2005 at 05:42:34PM -0500, Dave Jones wrote:
 > > On Sun, Mar 20, 2005 at 08:25:49PM +0100, Adrian Bunk wrote:
 > >  > Do we really need a global variable that does only hold the value of 
 > >  > NR_CPUS?
 > > 
 > > Yes.
 > >  
 > > NR_CPUS = compile time
 > > maxcpus = boot command line at runtime.
 > 
 > If this is how is was expected to work - it isn't exactly what is 
 > currently implemented.

It's ugly, as its setting the same thing in two different places, but
I don't see any obvious reason why it won't work.

 > The function maxcpus in init/main.c sets a static variable max_cpus -
 > not the global variable maxcpus in the mpparse.c files.

Both variables are used differently. The arch specific var is only
used for HT descrimination. The init/main.c one is used for smp bringup.

 > How should it be?
 > 
 > Should max_cpus in init/main.c become global and replace the maxcpus 
 > from the mpparse.c files?

I'd just leave it as it is, as it seems to be working right now.

		Dave
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