From: Michal Schmidt <mschmidt@redhat.com>
To: "Leon Woestenberg" <leon.woestenberg@gmail.com>
Cc: "Oliver Neukum" <oliver@neukum.org>, linux-kernel@vger.kernel.org
Subject: Re: Use of mutex in interrupt context flawed/impossible, need advice.
Date: Thu, 22 Nov 2007 17:49:36 +0100 [thread overview]
Message-ID: <20071122174936.75c8e65c@brian.englab.brq.redhat.com> (raw)
In-Reply-To: <c384c5ea0711220819j2fa19430sb54139191d181c3b@mail.gmail.com>
On Thu, 22 Nov 2007 17:19:44 +0100
"Leon Woestenberg" <leon.woestenberg@gmail.com> wrote:
> I forgot to mention that I would like to be prepared for, and use the
> -rt patch soon. I understand (maybe wrongly?) that semaphores are not
> real-time pre-emptible, mutexes and spinlocks are.
Semaphores are preemptible, but they don't do priority inheritance.
Michal
next prev parent reply other threads:[~2007-11-22 16:49 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-22 16:02 Leon Woestenberg
2007-11-22 16:11 ` Oliver Neukum
2007-11-22 16:19 ` Leon Woestenberg
2007-11-22 16:49 ` Michal Schmidt [this message]
2007-11-22 17:17 ` Arjan van de Ven
[not found] <fa.DDwTo7jhtvU2nkv268RloCrwiwc@ifi.uio.no>
2007-11-23 1:07 ` Robert Hancock
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