From owner-freebsd-arch  Thu Jan  3  3:59:41 2002
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To: Bruce Evans <bde@zeta.org.au>
Cc: Matthew Dillon <dillon@apollo.backplane.com>,
	John Baldwin <jhb@FreeBSD.ORG>, arch@FreeBSD.ORG,
	Bernd Walter <ticso@cicely8.cicely.de>,
	Mike Smith <msmith@FreeBSD.ORG>, Michal Mertl <mime@traveller.cz>,
	Peter Jeremy <peter.jeremy@alcatel.com.au>
Subject: Re: When to use atomic_ functions? (was: 64 bit counters) 
In-Reply-To: <20020103224754.G16354-100000@gamplex.bde.org> 
Date: Thu, 03 Jan 2002 03:59:37 -0800
From: Peter Wemm <peter@wemm.org>
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Bruce Evans wrote:
> On Thu, 3 Jan 2002, Peter Wemm wrote:
> 
> > Incidently, probably 90%+ of freebsd boxes (all those that run GENERIC or
> > similar) are essentially wire-oring the interrupt masks together due to the
> > slip/ppp drivers in the kernel.  On most of them, splanything() pretty much
> > masks all interrupts.  Check tty_imask, net_imask, and bio_imask and see
> > for yourself (and check cambio/camnet as well).  We *almost* have a boolean
> 
> Er, I think someone named peter fixed this so that it only happens if
> slip/ppp is actually used.  Only RELENG_3 still has the compile-time
> wiring for slip.

I just moved them to the modules themselves.  slip does it at first use,
but ppp still does it at boot (or load).  I thought plip did it too, but
it seems to ignore the net/tty problem entirely... :-/

Cheers,
-Peter
--
Peter Wemm - peter@FreeBSD.org; peter@yahoo-inc.com; peter@netplex.com.au
"All of this is for nothing if we don't go to the stars" - JMS/B5


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