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From: David Howells <dhowells@redhat.com>
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References: <20070330091028.cf884d4c.akpm@linux-foundation.org>  <20070329104936.GC5138@ucw.cz> <45E7AAFA.4070402@hitachi.com> <45E7AC6F.8080704@hitachi.com> <20070302093419.GA2001@elf.ucw.cz> <4607C47B.2030909@hitachi.com> <11911.1175195819@redhat.com> <20070329141715.71a6abae.akpm@linux-foundation.org> <460CE683.700@hitachi.com> 
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Kawai, Hidehiro" <hidehiro.kawai.ez@hitachi.com>,
       Pavel Machek <pavel@ucw.cz>, kernel list <linux-kernel@vger.kernel.org>,
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       sugita <yumiko.sugita.yf@hitachi.com>,
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Subject: Re: [PATCH 1/4] coredump: add an interface to control the core dump routine 
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Date: Sat, 31 Mar 2007 14:03:25 +0100
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Andrew Morton <akpm@linux-foundation.org> wrote:

> Yes, I agree - I don't think we presently have a way of avoiding having
> to send all of that uninteresting data down the pipe.

Have the kernel fork and exec a debug program "just in time" with the dying
process ptrace-attached in advance.  That program could then use ptrace() or
whatever to do the coredump.  I think Windows does something like that.

David