From: "Robert P. J. Day" <rpjday@mindspring.com>
To: Satyam Sharma <satyam.sharma@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>, Florin Iucha <florin@iucha.net>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: "upping" a semaphore from interrupt context?
Date: Sun, 24 Jun 2007 12:59:20 -0400 (EDT) [thread overview]
Message-ID: <Pine.LNX.4.64.0706241256380.8409@localhost.localdomain> (raw)
In-Reply-To: <a781481a0706240945j3a8afe8dkbb6b74d92bdedfc4@mail.gmail.com>
On Sun, 24 Jun 2007, Satyam Sharma wrote:
> Whoa, hold on. But I've been explicitly mentioning *binary*
> semaphores all along!
>
> Of course users who want / allow multiple tasks (but only upto a
> specific maximum number, which is what counted semaphores are all
> about) to be present in a given critical section simultaneously
> would still want to use the _counted_ semaphores, which is why you
> won't see the old "struct semaphores" dying anytime soon.
ah, ok, i've been misreading all this, sorry. i'm wondering, then,
if, given both mutexes and completions, whether the general semantics
of semaphores can be tightened up at all. just curious.
rday
--
========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry
Waterloo, Ontario, CANADA
http://fsdev.net/wiki/index.php?title=Main_Page
========================================================================
next prev parent reply other threads:[~2007-06-24 17:03 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-22 17:38 Florin Iucha
2007-06-22 17:34 ` Arnd Bergmann
2007-06-23 11:52 ` Robert P. J. Day
2007-06-23 12:02 ` Arnd Bergmann
2007-06-23 12:06 ` Robert P. J. Day
2007-06-23 15:42 ` Satyam Sharma
2007-06-23 15:52 ` Oliver Neukum
2007-06-23 17:02 ` Satyam Sharma
2007-06-23 16:11 ` Robert P. J. Day
2007-06-23 17:16 ` Satyam Sharma
2007-06-24 15:25 ` Robert P. J. Day
2007-06-24 16:45 ` Satyam Sharma
2007-06-24 16:59 ` Robert P. J. Day [this message]
2007-06-24 18:12 ` Satyam Sharma
2007-06-22 17:50 ` Satyam Sharma
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