Subject: Re: calling kthread_create() from interrupt thread
From: Arjan van de Ven <arjanv@redhat.com>
Reply-To: arjanv@redhat.com
To: Dean Nelson <dcn@sgi.com>
Cc: linux-kernel@vger.kernel.org, rusty@rustcorp.com.au
In-Reply-To: <40CF350B.mailxD2X1NPFBC@aqua.americas.sgi.com>
References: <40CF350B.mailxD2X1NPFBC@aqua.americas.sgi.com>
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Date: Tue, 15 Jun 2004 19:49:37 +0200
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On Tue, 2004-06-15 at 19:42, Dean Nelson wrote:
> I'm working on a driver that needs to create threads that can sleep/block
> for an indefinite period of time.
>=20
>     . Can kthread_create() be called from an interrupt handler?

no

>=20
>     . Is the cost of a kthread's creation/demise low enough so that one
>       can, as often as needed, create a kthread that performs a simple
>       function and exits?  Or is the cost too high for this?

for that we have keventd in 2.4, work queues in 2.6


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