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Date: Sat, 10 Jul 2010 19:29:46 +0200
Message-ID: <AANLkTinbHDFM4IrkATJ1KJhts5LFBelSmUTeS6cudM58@mail.gmail.com>
Subject: Re: periods and deadlines in SCHED_DEADLINE
From: Harald Gustafsson <hgu1972@gmail.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Raistlin <raistlin@linux.it>, linux-kernel <linux-kernel@vger.kernel.org>,
       Song Yuan <song.yuan@ericsson.com>,
       Dmitry Adamushko <dmitry.adamushko@gmail.com>,
       Thomas Gleixner <tglx@linutronix.de>,
       Nicola Manica <nicola.manica@disi.unitn.it>,
       Luca Abeni <lucabe72@email.it>,
       Claudio Scordino <claudio@evidence.eu.com>,
       Harald Gustafsson <harald.gustafsson@ericsson.com>,
       Bjoern Brandenburg <bbb@email.unc.edu>, bastoni@cs.unc.edu,
       Giuseppe Lipari <lipari@retis.sssup.it>
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> Right, so I would actually expect RT job release to be triggered by
> external events (say interrupts) more than on their own. And when its an
> external event I don't really see the use of this new syscall.

I agree that the common usage would be to wake up by an external
event, rather than sleeping for a specified time period that is longer
than the set period. I would assume that the period would be changed
to match some generic operational unit of the task like a frame rate
or packet rate, etc.
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