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Date:      Tue, 20 Jun 2006 22:51:46 -0500 (CDT)
From:      Denny White <dennyboy@cableone.net>
To:        FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   Re: FreeBSD smp
Message-ID:  <Pine.BSO.4.64.0606202242570.6552@badboybox.cableone.net>
In-Reply-To: <0578D634449883E0B7478DE4@Paul-Schmehls-Computer.local>
References:  <1150853032.16507.1.camel@localhost> <0578D634449883E0B7478DE4@Paul-Schmehls-Computer.local>

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> --On June 20, 2006 10:23:52 PM -0300 Sergio Lenzi <lenzi@k1.com.br> wrote:
>
>> Hello,
>> 
>> Is SMP enabled in the GENERIC kernel? I have a hyperthreading box, and
>> on
>> Linux it shows up with two cpus. When I do a top on the box in FreeBSD I
>> still
>> see only one CPU. Also, sysctl -a | grep cpu only shows a dev.cpu.0.
>>

Today Paul Schmehl wrote:

> No, SMP is not enabled in the GENERIC kernel.  You must add:
> options      SMP
> to the GENERIC kernel.
>
> Paul Schmehl (pauls@utdallas.edu)
> Adjunct Information Security Officer
> The University of Texas at Dallas
> http://www.utdallas.edu/ir/security/
>

Okay, might be off base here, so someone correct me if
I'm wrong. Don't you also have to remove the following

#ifdef SMP
#ifndef COMPILING_LINT
#error DEVICE_POLLING is not compatible with SMP
#endif
#endif

from /usr/src/sys/kern/kern_poll.c ?

You'll get an error part of the way through building
the kernel otherwise, right? Like I said, that's the
way I remember it. Just trying to save someone some
unnecessary work.


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