From: Tim Wright <timw@splhi.com>
To: Daniel Phillips <phillips@innominate.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [RFC] Semaphores used for daemon wakeup
Date: Mon, 18 Dec 2000 19:34:05 -0800 [thread overview]
Message-ID: <20001218193405.A24041@scutter.internal.splhi.com> (raw)
In-Reply-To: <0012171922570J.00623@gimli>
In-Reply-To: <0012171922570J.00623@gimli>; from phillips@innominate.de on Sun, Dec 17, 2000 at 01:06:10PM +0100
On Sun, Dec 17, 2000 at 01:06:10PM +0100, Daniel Phillips wrote:
> This patch illustrates an alternative approach to waking and waiting on
> daemons using semaphores instead of direct operations on wait queues.
> The idea of using semaphores to regulate the cycling of a daemon was
> suggested to me by Arjan Vos. The basic idea is simple: on each cycle
> a daemon down's a semaphore, and is reactivated when some other task
> up's the semaphore.
[...]
>
> OK, there it is. Is this better, worse, or lateral?
Well, I have to confess I'm rather fond of this method, but that could have
something to do with it being how we did it in DYNIX/ptx (Sequent).
It certainly works, and I find it very clear, but of course I'm biased :-)
Tim
--
Tim Wright - timw@splhi.com or timw@aracnet.com or twright@us.ibm.com
"Nobody ever said I was charming, they said "Rimmer, you're a git!"" RD VI
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next prev parent reply other threads:[~2000-12-19 4:05 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-12-17 12:06 [RFC] Semaphores used for daemon wakeup Daniel Phillips
2000-12-19 0:14 ` Nigel Gamble
2000-12-19 3:34 ` Tim Wright [this message]
2000-12-19 13:11 ` Daniel Phillips
2000-12-19 16:07 ` Tim Wright
2000-12-20 1:34 ` Daniel Phillips
2000-12-21 16:28 ` Tim Wright
2000-12-19 9:01 ` Daniel Phillips
[not found] <3A42380B.6E9291D1@sgi.com>
2000-12-21 19:30 ` Paul Cassella
2000-12-21 22:19 ` Tim Wright
2000-12-22 1:12 ` Daniel Phillips
2000-12-22 1:50 ` Daniel Phillips
2000-12-22 4:26 ` Paul Cassella
2000-12-22 11:46 ` Daniel Phillips
2000-12-22 15:33 ` Tim Wright
2000-12-22 17:25 ` Daniel Phillips
2000-12-22 17:32 ` Brian Pomerantz
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