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Date: Fri, 5 Nov 2010 11:48:05 -0700
Message-ID: <AANLkTimOTwtRQ_cF8WBYE6X7q0hfP37Gv7TKOXLY5k2U@mail.gmail.com>
From: Matthew Fleming <mdf356@gmail.com>
To: Hans Petter Selasky <hselasky@c2i.net>
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Cc: freebsd-current@freebsd.org, Weongyo Jeong <weongyo.jeong@gmail.com>,
	freebsd-usb@freebsd.org, Andrew Thompson <thompsa@freebsd.org>,
	freebsd-arch@freebsd.org
Subject: Re: [RFC] Outline of USB process integration in the kernel
	taskqueue system
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On Fri, Nov 5, 2010 at 11:45 AM, Hans Petter Selasky <hselasky@c2i.net> wro=
te:
> On Friday 05 November 2010 19:39:45 Matthew Fleming wrote:
>> True, but no taskqueue(9) code can handle that. =A0Only the caller can
>> prevent a task from becoming enqueued again. =A0The same issue exists
>> with taskqueue_drain().
>
> I find that strange, because that means if I queue a task again while it =
is
> running, then I doesn't get run? Are you really sure?

If a task is currently running when enqueued, the task struct will be
re-enqueued to the taskqueue.  When that task comes up as the head of
the queue, it will be run again.

Thanks,
matthew