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Date: Sat, 18 Feb 2012 17:01:38 -0800 (PST)
From: Don Lewis <truckman@FreeBSD.org>
To: dougb@FreeBSD.org
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Cc: ae@FreeBSD.org, arch@FreeBSD.org
Subject: Re: [patch] allow crash dumps to Linux swap partitions
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On 18 Feb, Doug Barton wrote:
> On 02/18/2012 16:54, Don Lewis wrote:
>> On 18 Feb, Doug Barton wrote:
>>> On 02/18/2012 09:50, Andrey V. Elsukov wrote:
>>>> I think we can check bp->bio_from field, something like that (not tested):
>>>
>>> That made dumpon happy anyway, thanks!  I'm a bit rusty on "how to cause
>>> a dump on purpose" nowadays .... I'm running 8-stable right now, if
>>> someone wants to give me a hint I'll test this.
>> 
>> Break into DDB and type "call doadump".
> 
> Yeah, that's what I used to do, but Ctrl-Alt-Esc didn't do anything for
> me. Do I have to compile in options BREAK_TO_DEBUGGER even on a desktop?

Looks like it.  I've got that option in my custom kernel config files
that start with "include GENERIC".