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From: ebiederm@xmission.com (Eric W. Biederman)
To: Paul Mackerras <paulus@samba.org>
Subject: Re: [PATCH] powerpc pseries eeh: Convert to kthread API
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Date: Mon, 23 Apr 2007 22:51:50 -0600
In-Reply-To: <17965.35054.835790.275270@cargo.ozlabs.ibm.com> (Paul
	Mackerras's message of "Tue, 24 Apr 2007 14:34:54 +1000")
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Cc: "<Andrew Morton" <akpm@osdl.org>, linux-s390@vger.kernel.org,
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	Christoph Hellwig <hch@infradead.org>, linuxppc-dev@ozlabs.org,
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Paul Mackerras <paulus@samba.org> writes:

> Eric W. Biederman writes:
>
>> Well the basic problem is that for any piece of code that can be modular
>> we need a way to ensure all threads it has running are shutdown when we
>> remove the module.
>
> The EEH code can't be modular, and wouldn't make any sense to be
> modular, since it's part of the infrastructure for accessing PCI
> devices.

Agreed.  However most kthread users are modular and make sense to
be so we need to design to handle modular users.

I don't think the idiom of go fire off a thread to handle something
is specific to non-modular users.

Eric