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Date:      Wed, 20 Jul 2011 13:52:13 -0400
From:      Lowell Gilbert <Lowell@Be-Well.Ilk.Org>
To:        Lars Eighner <luvbeastie@larseighner.com>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: How to add sio to 8.2 ?
Message-ID:  <44zkk87sc2.fsf@lowell-desk.lan>
In-Reply-To: <alpine.BSF.2.00.1107190501001.40820@abbf.onfvpvfc.arg> (Lars Eighner's message of "Tue, 19 Jul 2011 05:04:06 -0500 (CDT)")
References:  <alpine.BSF.2.00.1107190501001.40820@abbf.onfvpvfc.arg>

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Lars Eighner <luvbeastie@larseighner.com> writes:

> I've come to the conclusion that I need sio to be able to use 8.x.
>
> Can it be as simple as just dropping the code from 7.x into the source
> for 8.x and adding a line to the kernel configuration?
>
> Or would this be fraught with all kinds of deep traps?

It might work, but it would certainly be bad for performance on
multiprocessor systems.  I think the Giant lock is still around, 
just not used.  If it's actually been excised from the code, then
you have no chance at all.



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