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To: Steve Passe <smp@csn.net>
cc: Poul-Henning Kamp <phk@dk.tfs.com>, smp@freebsd.org,
        Peter Wemm <peter@spinner.dialix.com.au>, dyson@freebsd.org
From: Poul-Henning Kamp <phk@dk.tfs.com>
Subject: Re: pushdown of "giant lock" 
In-reply-to: Your message of "Thu, 17 Jul 1997 15:08:46 MDT."
             <199707172108.PAA15231@Ilsa.StevesCafe.com> 
Date: Thu, 17 Jul 1997 23:21:11 +0200
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In message <199707172108.PAA15231@Ilsa.StevesCafe.com>, Steve Passe writes:

>---
>> 2.  Add a permanent version of the ugly serial-port stuff, under a compile-
>>     time option of course, to record the lock actions.
>the above tool eliminates the need for this, it sucks the buffer via /dev/kmem
>.

Belive me, it doesn't.  To get to /dev/kmem, quite a bit of locking has to
work...

--
Poul-Henning Kamp           | phk@FreeBSD.ORG       FreeBSD Core-team.
http://www.freebsd.org/~phk | phk@login.dknet.dk    Private mailbox.
whois: [PHK]                | phk@tfs.com           TRW Financial Systems, Inc.
Power and ignorance is a disgusting cocktail.