From: Joe Korty <joe.korty@ccur.com>
To: Daniel Walker <dwalker@mvista.com>
Cc: linux-kernel@vger.kernel.org, inaky.perez-gonzalez@intel.com,
mingo@elte.hu
Subject: Re: FUSYN and RT
Date: Tue, 12 Apr 2005 16:33:29 -0400 [thread overview]
Message-ID: <20050412203329.GA15304@tsunami.ccur.com> (raw)
In-Reply-To: <1113329702.23407.148.camel@dhcp153.mvista.com>
On Tue, Apr 12, 2005 at 11:15:02AM -0700, Daniel Walker wrote:
> It seems like these two locks are going to interact on a very limited
> basis. Fusyn will be the user space mutex, and the RT mutex is only in
> the kernel. You can't lock an RT mutex and hold it, then lock a Fusyn
> mutex (anyone disagree?). That is assuming Fusyn stays in user space.
Well yeah, but you could lock a fusyn, then invoke a system call which
locks a kernel semaphore.
Regards,
Joe
--
"Money can buy bandwidth, but latency is forever" -- John Mashey
next prev parent reply other threads:[~2005-04-12 23:21 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-12 18:15 FUSYN and RT Daniel Walker
2005-04-12 20:29 ` Esben Nielsen
2005-04-12 22:15 ` Daniel Walker
2005-04-12 20:33 ` Joe Korty [this message]
2005-04-12 21:25 ` Daniel Walker
-- strict thread matches above, loose matches on Subject: below --
2005-04-12 19:35 Perez-Gonzalez, Inaky
2005-04-12 20:35 Perez-Gonzalez, Inaky
2005-04-12 23:11 ` Esben Nielsen
2005-04-13 0:27 ` Daniel Walker
2005-04-13 15:46 ` Steven Rostedt
2005-04-13 17:33 ` Daniel Walker
2005-04-13 18:38 ` Steven Rostedt
2005-04-15 22:51 ` Bill Huey
2005-04-15 23:37 ` Inaky Perez-Gonzalez
2005-04-16 1:14 ` Steven Rostedt
2005-04-16 1:20 ` Inaky Perez-Gonzalez
2005-04-16 1:38 ` Steven Rostedt
2005-04-16 1:53 ` Inaky Perez-Gonzalez
2005-04-16 2:31 ` Steven Rostedt
2005-04-16 3:00 ` Sven Dietrich
2005-04-16 3:31 ` Steven Rostedt
2005-04-16 13:05 ` john cooper
2005-04-16 14:23 ` Steven Rostedt
2005-04-16 14:51 ` john cooper
2005-04-16 4:05 ` Inaky Perez-Gonzalez
2005-04-18 5:30 ` Bill Huey
2005-04-18 7:37 ` Sven-Thorsten Dietrich
2005-04-18 11:33 ` Steven Rostedt
2005-04-12 21:28 Perez-Gonzalez, Inaky
2005-04-12 22:26 Perez-Gonzalez, Inaky
2005-04-12 22:33 ` Daniel Walker
2005-04-12 23:09 Perez-Gonzalez, Inaky
2005-04-12 23:36 Perez-Gonzalez, Inaky
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